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Home My WebLink AboutLUA98-136 Base of Valley Slope SE 5TH ST I ,ti �, 35 _ ._ 11 O l I Lif I n [ I fl ❑ 1 l O Zq\P 36 ❑ ❑ ❑ 0 e \.(, 23• O 28 O 0 .lock Valve �Q Site e�\t\ `OQ e 0:3 Q 0�� qv OO SF 6T OO El III � O � Ilti,TP-1• froQr ySj �H AVE S O �� P 2 V 1f'Zze ,' 29IV 0 F [ / r�. O TP 10� T v 1p0. . 4 •41 D alf O O i� �*Nip? ' ia . 0 F ,, SP-6A 2 �/tico �o .:ITS C2o�� O SP-1 SP 9 N. sR P— R�'• TP-6LIMN 1�7RW-1 FY ��8 t 4,&iiv, Riverview 3• y�Y 6 r z"'14j 370 C a ' t Q° �I Park �> 26 .• SP-8 \ 13 od SE ST. - I I I 4 RW-2 II VRS-2 .•TP•8 \eta •MW-4� Dee Ilo1 w� 12 i .4 P RAILR= I_I�I n 24 021 \�°� _� o ' .� Maplewood Nil�1�11394/ �, .„ Golf I_ 440 7 ' Course / / C (1 � Se S Ap/ O1 ,� T7P� � �� S R //// 41/ 4.&. •fg_A *4 0 PW-12 EXPLANATION: r' % True �00- TP-1 -- TEST PIT (APRIL 1998) s'<C\ Gj SP-1 -� SOIL PROBE (APRIL 1998) �F`�% Site North #4* 1 • MONITORING WELL (OLYMPIC PIPE LINE COMPANY) N AS-1 0 AIR SPARGING WELL .1 i o rnw 36 37 ® ABANDONED MONITORING WELL Base of Valley SlopeI CI� ,F 10 I MONITORING WELL NOT LOCATED IN 1998 PW-12 0 CITY OF RENTON WELL S ' 1 1: MW-36 RW-1 p ABANDONED RECOVERY WELL 0 200 400 RE ''"CO 00 °' VRs-t o ABANDONED VAPOR RECOVERY SYSTEM SCALE IN Y N 441 FORMER PRODUCT SEEP co o ON O P L C FAPROJECT: UTY: OLYMPIC PIPE LINE COMPANYEM TALE NEIGHBORHOOD - Notes: 1 . The locations of all features shown ore approximate. Ma plewood Neighborhood 9 DETAIL MAP 0 2. TP-7 was situated in the same location as SP-11. bpi, Geoff En ineers Renton, WA o Reference: Drawing entitled "Cedar River Recovery Area Plot Plan" by Olympic Pipe Line Company, 10/16/86. \` g 1 DATE: 9/01/98 SHEET 2 OF 8 DRAWING No. 2 lir • \ ------j 14- \ (oh 0 U Z N \ 0 0 \ \ NEWPORT AVE SE PUCE PIPING TRENCHES AND YELLS co BENEATH MIDDLE OF SIDEWALK �,- SS • ,43 "IP S5� 22•\ \ Curb \� �� — — (t)vJ \ g• 4PP (n� r.•I -D 16'0 Ductile Iron Water Line• \ 20 feet North of Centerline 3425 _ \ to � �`11 Conuxets � fTl r 5. GjGj / V�I ` Waikray 524 \ Ul �/y � 1'�rs� ` 532 •�� 528 Z _\\ . 3333 I Driveway \ 3428 \ I 71 Concrete \ 3508 i -14 Concrete Concrete ��. 7 I foot diameter tree \ 8' chainRnY.fence \ Driveway �ferea I /i r. N Sprinkler box atth data MANIFOLD — I �- - 13 - ttEMovm ex - = _ 11E-13• AS-13 AS-12 TrHl.��11 =' \ - l I 1.414 •' ' c ——-- -- _y�r 4 1 . r \ ‘ -8 I { AS-1 j' In ��', - t�� w 4.0 I I I 1 A. Proposed Souther \ Concrete AS-1' VRS-1 ' 1 -• — — I I•I Equipment Playground AS-14 I 4'chatnfnk fence II ' 3 I Enclosure \ Baseball II •18 ' \I:11111.i I VE-4 I 0 o L 2' high 0 I 0 Diamond AS-1, ° * \ 2 toot dlamda tree concrete wall — — \—— — ——--braes-- — . �I AS-2 \ Cr30 feet td1 \ 4 ��S dtomater tree \ Concrete) \ •17 I ' N ;VE-3 40 feettallIg2 foot diameter tree \ I Mtn 30 feet tall \ a� - �•AS-1 Block Valve Endo�ure\ \ o o 11111, \\ o 20'Pipeline (OPLC)8' deep o ., •i •38 I . \\I 2 foot diameter tree I\ \ M, 45 fed tall \ 16'Pipeline (OPEC)5.5'deep Ir --,1r. ,i 1` VConaste dabSr,.rthsrn S em- --�Addadtrenchingt4 ASSI , ' ` x In \ connect south vapor -Northern System I 1 20• 8•H h thalnitn Fence \ �2 foot diameter tree extraction exhaust to t--1-� r 30 feet tat north enclosure for I �� I 61 vapor treatment. \ ° I I n a •--'� �iLT- \ Sidelk nate(typ.) \ _- ydfQn\ I Proposed NarfFierrr- tn� \ Maplewood Park AsphaltEquipment Ehdosure \ playground ' I True surface I '• `�/ (C APPRox 4''DEEr \ \ \� ti r \ti Rettroom Asphalt path \ Site North v \ \ a,� (typ)LO ` �s Grass(t)p.) \ 3.31. 0 0 15 30 \ ` ow J l� SCALE IN FEET EXPLANATION: SEE LEGEND & SYMBOL SHEET . N c0 PROJECT: REMEDIATION SYSTEM TITLE: OPLC FACILITY: OLYMPIC PIPE LINE COMPANY SITE PLAN Notes: 1. The locations of all features shown are approximate. o Maplewood Neighborhood 0 2. Underground utilities to be verified by locate. Not all utilities are shown. �(/N' Renton, WA U Geo Reference: Drawing entitled "Cedar River Recovery Area Plot Plan" by Olympic Pipe Line Company, 10/16/86. �ILI! Engineers 1 DATE: 9/01/98 SHEET 3 OF 9 I�RAwiNG No. 3A tl 0 p CITY OF REN": s1 a .d/ Planning/Building/Public .,t ii:s ®� ; 1055 South GradyWay - Renton Washington 98055 9) ).- AU6 0 9o. cc �0 0 ® f q ® '3 5 " g np� ADDRESS SERVICE REQUESTED Et 715a40 a.s. POSTAGE BD to li En P MUTED 0Ek. *St S} ` .- Scott Dungan 6820 South 133rd Street, Apt#4 Seattle, WA 98178 NOT DEL!VERARLE ,,-- T 000ie AS ADDRESSED be 6 i snd VT - - w UNABLE TO FORWARD (_'' ;r V1V 11 ,T ------ --- — — -------- -- - RETURN TO SENDER = 4 1 j i ii i 4 t i i4 i j y t j i ) ti •-+. •+.-•+.�= 1�If3EI?i�tt�Eii?!}it3�!i{ti�SF{Elilitli!tSltitt?�}iiil}?ti�}i m \\��\ Mito Bose of Valley Slope a m SE 5TH ST 0 35 3E O , ZqN9 G1 Y3 . q E Kiiiiiiisigirgo =lock Valve Site e\\ce `OQ�'O28 \Q• OO 0.33 , ` / O Q •`Q&.4 O I 4' , 6O SF v� O� � s Oo e OO Ty 0 I;- �¢T , , � ' O 0" AVE SF OO o0,.-, �O 32 '�a ,,� / ft E k z � vi a Q 34 V�E ��T � Q V%'1000 •41 �• O72......r-: ''..0,�qp� a . O 4 12 , O /�2 F SP- _: .< �t / �<< O ❑SP- Cr _ O J6P9w P-. -17.3 -6 /��74 1�pRW-1 L' o S�.. ft V ,1111111 R'Parkw 3• 6r oy 3 02fi ■ t .. '•� ae 5TH o SE I- 4 �. . iiiiiiIlor I� >a ao ST I WRW-2 1 TP-8 v _I� 12 VRS-2 O 69 (i RAILf= I�I�, CD + 0 2aa 021 ' Maplewood I�I�, 394 . Golf a , Course I 4i41/140/1 ' / 47�' a O Q SE STN p ifi ,*ir SF . GPW-12 / •R. sT� , t. ce? .' / � ass sr• - ,/ •EXPLANATION. `'30 , True . TP-1- TEST PIT (APRIL 1998) SF 6). . , +4n SC Site North , SP + SOIL PROBE (APRIL 1998) y 1 • MONITORING WELL (OLYMPIC PIPE LINE COMPANY) f N As-1 • AIR SPARGING WELL Mw-3s 37 0 ABANDONED MONITORING WELL Base of Valley Slope 100 MONITORING WELL NOT LOCATED IN 1998 ' o PW-12 0 CRY OF RENTON WELL MW-36 0 200 400 m RW-1 V ABANDONED RECOVERY WELL 1 cn VRS-1 ABANDONED VAPOR RECOVERY SYSTEM N SCALE IN FEET c FORMER PRODUCT SEEP co o OPLC PROJECT:REMEDIATION-SYSTEM- ` FACILRY: OLYMPIC.PIPE LINE COMPANY NEIGHBORHOOD oNotes: 1. The locations of all features shown are approximate. Maplewood Neighborhood DETAIL MAP o 2. TP-7 was situated in the same location as SP-11. Renton. WA • (3 a Reference: Drawing entitled "Cedar River Recovery Area Plot Plan" by Olympic Pipe Line Company, 10/16/86. � EI1glnleers 1 DATE: 9/01/98 SHEET 2 OF 8 DRAWING No. 2 • 2 REMEDIATION SYSTEM OLYMPIC PIPE LINE COMPANY a o Maplewood Neighborhood Renton, WA SITE SYMBOLS MW-5 • MONITORING WELL -x x----x- FENCE LINE INDEX OF DRAWINGS -- SOIL BORING -I 1-1 RAILROAD TRACKS O SVE WELL -R/W - RIGHT OF WAY NO. DESCRIPTION 0 AIR SPARGING WELL 64 64 EXISTING GROUND SURFACE ELEVATION 1 DRAWING INDEX/SYMBOL & LEGEND SHEET 0 PROPOSED SVE WELL CONTOUR (FEET) (CITY OF RENTON DATUM) 2 NEIGHBORHOOD DETAIL MAP PROPOSED AS WELL -- "SITE" BOUNDARY © - POWER POLE E OVERHEAD ELECTRIC LINE 3 SITE PLAN O POWER POLE WITH TRANSFORMER - -E- - UNDERGROUND ELECTRIC LINE 4 CONSTRUCTION SPECIFICATIONS _ LIGHT POLE - --G- - GAS LINE 5 PROCESS FLOW DIAGRAM T OVERHEAD TELEPHONE LINE 6A CONSTRUCTION DETAILS SS SANITARY SEWER MANHOLE 111111111 CATCH BASIN - -T- - UNDERGROUND TELEPHONE LINE 6B CONSTRUCTION DETAILS - -w- - WATER LINE . 7 SCHEMATIC EQUIPMENT LAYOUT (PLAN VIEW) ED TREE/SHRUB - -SS- - SANITARY SEWER LINE • FIXED PROTECTION POST - -S- - STORM SEWER LINE o REMOVABLE PROTECTION POST PROCESS LINES ABOVE GRADE B+ BENCHMARK - - - PROCESS LINES BELOW GRADE PROPOSED UNDERGROUND VAULT PROPOSED PIPING TRENCHES (2"PVC TO EACH WELL UNLESS NOTED OTHERWISE) o SPRINKLER HEAD VRS-1 EXISTING VAPOR RECOVERY PIPING SPRINKLER CONTROL BOX m rn o c • -- ------ ---- - -- - co 0 PROJECT:REMEDIATION SYSTEM TITLE: OPLC FACILITY: OLYMPIC PIPE LINE COMPANY DRAWING INDEX 3 • S �iin Maplewood Neighborhood SYMBOL & LEGEND SHEET a Geol�-Engineers DATE: Renton, WA DRAWING No. \/ 1 9/01/98 SHEET 1 OF 8 1 1 o AIIIIIIIIIIIIIIIIIIFti o Base of Valley Slope ro SE 5TH ST 0 35 _11/N77g,r,\5-' 23• giQiiiiiisillig %lock Valve Site e\`�e g, 0 OQ\.. e On( • 28 OO 33 , ` O Qe��CS oMN: 4' TP 6F o3z �'e oQ sTH 0 p a¢r L , ST . 61N AVf SF OO o�� 0 c.> ' ,� / Mkt 4 Q 34 ii- P. �. O 30 1] a 0 4.. ,•_16 10 0 O •41 D vii • 22• 1z r�, il 2 4,41A) 4F sP- Os'I „ Vq�C O ❑SP- . SP 9 P-oØ9w..6 /� 4o , ,ewwl It6r.2Q3026 SPe O 3E 5TH w ST I�I� 12 ORW-2 VRS-2 O aQ\e O �P RAILROAD--- AIL_= I _I�I I .o 04 021 410, O �� Maplewood �lI 39 T .. Golf �I� 0 7 �, . ' Course �' a O QCJ SF 5TH 4 1 P//A S . SF oPw-tz-- II41144N �� R sT�' / 16ST•4110Pr4 EXPLANATION: `'O True TP-1 4- TEST PIT (APRIL 1998) sF Gj,• ` yF i SP-1+ SOIL PROBE (APRIL 1998) y � Site North 1 • MONITORING WELL (OLYMPIC PIPE LINE COMPANY) N #4t* As-1 • AIR SPARGING WELL 0 MW-36 37 0 ABANDONED MONITORING WELL Base of Valley Slope too MONITORING WELL NOT LOCATED IN 1998 ' Pw-tJ6z CD CITY OF RENTON WELL MW-co 200 400 RW-1 V ABANDONED RECOVERY WELL ' . VRS-1 o ABANDONED VAPOR RECOVERY SYSTEM SCALE IN FEET Cs/ 441 FORMER PRODUCT SEEP - PROJECT:REMEDIATION SYSTEM OPLCITTLE' o ; FACILITY: OLYMPIC PIPE LINE COMPANY NEIGHBORHOOD oNotes: 1. The locations of all features shown are approximate. Maplewood Neighborhood DETAIL MAP 0 2. TP-7 was situated in the same location as SP-11. ci Renton, WA o Reference: Drawing entitled "Cedar River Recovery Area Plot Plan" by Olympic Pipe Line Company, 10/16/86. Ge0 E1lgineers 1 DATE: 9/01/g6 SHEET 2 OF 8 DRAWING No. 2 2 • • 1" GALVANIZED -A. �� AIR:� PRESSURE O PIPE O� -40 GAUGE • • cp 1" GALVANIZED • 0 itE (TYPICAL) - 1" 90' TOP HINGE S — — — GALVANIZED 180'SIWNC CHAIN LINK FABRIC STRETCHER BAR TRUSS RODS BRAG RAIL PULL POST ELBOW (TYPICAL) �•�-�-�•�'SNING- I. a BRACE RAIL • �� ♦♦♦♦�♦��♦♦♦♦♦♦♦♦ r��♦�♦♦�♦�♦��♦v♦•�e♦�♦�♦�•♦,�z% :: .1i-%t 4♦�♦;♦+♦�♦tee•♦�♦"♦�♦��s s O t r t♦00 T s"7_210, ♦VON♦. O♦♦ - 1" GLOBE I 4 4 1 •.„.. '♦♦�♦♦♦♦♦♦) -, ••i♦♦♦•♦♦♦♦♦♦♦♦•♦,♦♦ ••�•j, - ♦•••i♦♦♦♦•♦♦♦♦♦♦♦♦,♦�• '• '...� ♦•••♦♦♦♦♦♦♦♦♦♦♦♦♦��F�<*•♦♦♦♦♦♦♦♦♦\�•�♦ 1_ VALVE (TYPICAL) ♦♦♦♦♦♦♦�♦�♦` :�I:- ?i�ii♦i♦i�i♦i♦♦♦i♦i♦i♦i0i�iI■ :� ii♦♦i�i�i♦i♦i♦i♦i♦i�i♦4i1i '♦♦♦♦�♦�♦�♦�♦��anl.`�♦r♦�♦�♦�♦�♦�♦♦♦� \/\/\/\ 0, -; I///// 1 /I/I ;, '^ IBO SN1HG \\.\.\. 1 ABRIC BAND �I\I\/\, SELVAGE . . 1r ROUND SECTION 12'ROUND SECTION�'•'S,1' 3o ROWS: '• — • :._± C C � I. FRAMES w/MOILED SELVAGE� ONO TOP EDGE W W k� 1 ® 1 FGR TYPES 4 6 6 CHAIN LINK FENCE INSTALLATIONS. ttJl 1 2 SIGHT OBSCURING SLATS 70 BE INSTALLED BY CONTRACTOR. J.DOUBLE GATES SHALL BE USED AT BOTH ENCLOSURES 0-10 SCFM SIGHT (NORTH ENCLOSURE SHALL BE RIO 10'NIDE GATES AND FLOWMEIER 0-25 PSI AIR PRESSURE SOUTH ENCLOSURE SHALL BE mo s'WOE GAS) (TYPICAL) -® -� ' Q -®�-GAUGE (TYPICAL) EQUIPMENT ENCLOSURE SCHEMATIC CHAIN LINK FENCE WITH DOUBLE GATE 1" HOSE COUPLING 1' BLACK FLEX HOSE, (TYPICAL) OR SIMILAR (TYPICAL) (TO AIR SUPPLY LINES FOR AIR SPARGING WELLS) Iv- AIR SPARGING SYSTEM SCHEMATIC MANIFOLD DETAILS DETAIL A - PVC TEE (TYPICAL) f 90* PVC ELBOW S • — ------)7— — (TYPICAL) - X —.1 < . - 3" PVC GATE VALVE 4 4 1/4" TAPPED SAMPLE PORT co (TYPICAL) (TYPICAL) 0) ❑ ❑ VAPOR EXTRACTION PIPING N —FROM WELLS AND VRS-1 o ��\ �� (NOTE—VRS-1 PIPING IS 10" DIA) TITLE: VAPOR EXTRACTION SYSTEM SCHEMATIC MANIFOLD DETAILS OPLC PROJECT: REMEDIAT1ON SYSTEM FACILITY: OLYMPIC PIPE LINE COMPANY CONSTRUCTION 0 LEGEND DETAIL B Maplewood Neighborhood DETAILS 0 o M® AIR FLOW DIRECTION �,,^ �� Renton, WA VGV� �n� 1 DATE: 9/01/98 SHEET 7 OF 9 DRAWING No. 6A - 4 „..., ..o:ai:ti, : ,T-4':c:] it .�..=. tJol:i i�.�:�7�1 3 ,:i IA i.:::1is.-,L..-_ .,-;0 REMEDIATION SYSTEM _ y OLYMPIC PIPE LINE COMPANY N O O Maplewood Neighborhood • O Renton, WA SITE SYMBOLS MW-5 • MONITORING WELL —x x x— FENCE LINE INDEX OF DRAWINGS + SOIL BORING —1 I I RAILROAD TRACKS 0 SVE WELL R/W RIGHT OF WAY ! NO. DESCRIPTION 0 AIR SPARGING WELL 64 64 EXISTING GROUND SURFACE ELEVATION 1 DRAWING INDEX/SYMBOL & LEGEND SHEET 0 PROPOSED SVE WELL CONTOUR (FEET) (CITY OF RENTON DATUM) PROPOSED AS WELL "SITE" BOUNDARY 2 NEIGHBORHOOD DETAIL MAP -- • 3 SITE PLAN © POWER POLE E OVERHEAD ELECTRIC LINE 0 POWER POLE WITH TRANSFORMER —E — ,UNDERGROUND ELECTRIC LINE 4 CONSTRUCTION SPECIFICATIONS LIGHT POLE G— — GAS LINE 5 PROCESS FLOW DIAGRAM r T OVERHEAD TELEPHONE LINE ss SANITARY SEWER MANHOLE 6A CONSTRUCTION DETAILS t - —T— — UNDERGROUND TELEPHONE LINE CATCH BASIN 6B CONSTRUCTION DETAILS - -w- - WATER LINEED 7 SCHEMATIC EQUIPMENT LAYOUT (PLAN VIEW) TREE/SHRUB — —ss— — SANITARY SEWER LINE • FIXED PROTECTION POST —s— — STORM SEWER LINE I O REMOVABLE PROTECTION POST PROCESS LINES ABOVE GRADE el_ BENCHMARK PROCESS LINES BELOW GRADE x -PROPOSEDPROPOSED PIPING TRENCHES (2'PVC TO UNDERGROUND VAULT EACH WELL UNLESS NOTED-OTHERWISE) - - o SPRINKLER HEAD VRS-1 EXISTING VAPOR RECOVERY PIPING I I SPRINKLER CONTROL BOX Lv:_`p; `N T Hz J•, , CITY OF,_.'T.ITG,'S (,. SEP 01 l:' :3 pE'd ' d'. E trj op PROJECT: REMEDIATION SYSTEM TITLE: O P L C FACILITY: OLYMPIC PIPE LINE COMPANY DRAWING INDEX o Maplewood Neighborhood SYMBOL & LEGEND SHEET ; J -.itv Renton, WA Geo�rEngineers 1 DATE: 9/01/98 SHEET 1 OF 8 DRAWING No. 1 1 1 .0 GENERAL REQUIREMENTS 3.0 PROCESS EQUIPMENT INSTALLATION 0 cv 1 . Contractor shall locate all undergro"und utilities before construction and 1 . Equipment shall be placed in accordance with the Equipment Layout (Drawing o • 7) and the Process Flow Diagram (Drawing 5) take all necessary precautions to prevent damage to or disruption of 2. Contractor shall exercise due care to protect equipment from theft or o existing underground utilities during construction. Contractor shall be damage. responsible for any repairs needed. 2. Contractor is to comply with all Federal, State and Local safety and environmental laws and ordinances. 3. Contractor is responsible for protecting the environment during construction 4.0 FENCES AND GATES by protecting trees and shrubs, containing any run-on or run-off, controlling 1 . Contractor shall install suitable 8-foot tall chain link enclosures with sight dust, and containing any contamination caused by the contractor. obstructing contractor shall dispose of any construction debris off site. slats. Standard enclosures shall be dimensioned as shown on 4. Specifications and notes supersede drawings-any conflict is to be brought Drawing 3. to the attention of GeoEngineers for resolution. , 2. The entry doors shall be installed with a latch capable of being 5. OPLC is responsible for obtaining permits and environmental reviews. secured with a padlock. 6. It is the contractor's responsibility to verify all dimensions and conditions before 3. GeoEngineers will post a sign noting emergency contact numbers for system starting work. GeoEngineers shall be notified of any discrepancy for resolution. operation. 7. Construction areas are to be clearly marked with cones, barricades, or other approved safety markers, as required by local codes, to restrict access to unauthorized persons and provide a safe work area. Open trenches shall be 5.0 PIPING AND VALVES fenced or covered daily. 8. The contractor shall warranty all materials and workmanship for a period of 1 . Installation details are provided in Drawings 6A and 6B Construction Details. one year. Defects shall be corrected at no cost to OPLC. 2. All piping and conduit shall be supported in accordance with local codes 9. Contractor shall provide GeoEngineers with "AS BUILT" drawings to prevent sagging or over-stressing of the pipe and connections. All piping (accurately marked up copies of original drawings) within 30 days of final shall be supported so that no load or stress is transferred to any equipment. system installation. 3. Process piping shall be pressure tested at 15 psi and demonstrated to maintain • 10. Contractor shall notify GeoEngineers 48 hours prior to the start of work. that pressure for one hour. 11 . Contractor, with the aid of GeoEngineers, shall coordinate construction activities 4. Process piping inside the enclosure shall be labeled with corresponding well f to minimize disruption of existing residential and park uses. numbers. 5. Where piping is routed aboveground, inside enclosure, the piping shall be supported by unistrut and shall be per code. 6. Utility piping must be installed per code. 7. All underground process piping shall be minimum of Schedule 40 PVC- 2_.0 SITE WORK I with primed and cemented fittings. Earthwork for trenching 8. Valves shall be labeled for their use and shall be installed as shown in i 1. Existing landscape materials, grass or gravel are to be reused when possible and detailed drawings. restored to original appearance at trench locations that are within landscaped, 1 grassed or graveled areas. 2. Excavate and stockpile soil encountered during trenching to required subgrade elevations. 6.0 ELECTRICAL I 3. Backfill trenches with soil removed from the trenches after pipes. have been pressure 1. Contractor to provide electrical and equipment wiring drawings for permit purposes. C tested. Hand tamp around pipes. Compact adequately to support surface material - I - - - - - __(Jandscaping, grass,-gravel or pavement.) i 4. Contractor shall notify GeoEngineers if -contaminated -soil--is-encountered -during - - - -- -NOTE: -__ 1 trenching activities. GeoEngineers will conduct soil sampling as necessary. --- - - - --- - - _ _ _ _ __ 5. Place contaminated soil on plastic:.sheeting and cover in accordance with best Refer to contractor scope of work for project specific construction s ecific_ati.ons. management practices. ; =. '._` • ' - '+ r!- 6. Refer to contractor scope of work for details regarding protection of existing utilities Girt Cr- ;':Tt�;1 during trenching. co c R_ S 1 I3 co �g p-� Paving RECLP J; ED o PROJECT: REMEDIATION SYSTEMS' 1 . Existing pavement, where present, is to be saw cut when removed to provide a OPLO FACILITY: OLYMPIC PIPE LINE COMPANY CONSTRUCTION square vertical joint for repaving. 0 2. Pavement shall be replaced with asphalt or concrete to match existingpavement Maplewood Neighborhood SPECIFICATIONS 0 P P r 6 thickness and strength. Renton, WA 0 3. Pavement and base materials to conform with the City of Renton requirements. '°en 1 DATE' 9/01/98 SHEET 4 OF 8 DRAWING No. 4 4 AIR SPARGING SYSTEM w N O 0 .4- - a) co PRV (TYPICAL AT MANIFOLD, L N TG I I S SEE DETAIL FIG.6A) AIR INLET/OUTLET SILENCER CLEAN OIL-FREE Ill P 42 AIR TO AIR 1" SPARGING WELLS ATMOSPHERIC PARTICULATE • Ir AIR �— FILTER _10) SI HM ® AS/VE DESIGN PARAMETERS OIL—LESS MOTOR STARTER TO ELECTRICAL COMPRESSOR CONTROL PANEL SUPPLY AUTO — REFER TO TEXT OF CONTRACTOR REQUIREMENTS OR BLOWER (NEMA 4) DIALER WITH WEATHERPROOF (NOTE 4) SCOPE OF WORK. COVER (NOTE 4) PROGRAMMABLE TO EXTERNAL TIMER PHONE LINE CATOX EXHAUST VAPOR EXTRACTION SYSTEM 'CD NOTES: 1. ENCLOSURE WITH PROGRAMMABLE TIMER CONTROLS CATOX FOR "INDIVIDUAL ZONED" CONTROL OF SOLENOID. VAPOR ALL ELECTRICAL EQUIPMENT AND WIRING SHALL PF [ TREATMENT 2. BE IN UL APPROVED AND IN COMPLIANCE WITH NEC MAKE—UP UNIT INLET AIR p � (NOTE 3) AND LOCAL CODE REQUIREMENTS. g FROM VAPOR EXTRACTION WELLS— o (TYPICAL AT MANIFOLD) 3. THE CATOX WILL BE LOCATED IN THE NORTHERN (SEE DETAIL FIG.6A) -__ ? ENCLOSURE. VAPOR EXTRACTION SYSTEM EXHAUST FROM N ® I THE SOUTH SYSTEM WILL BE ROUTED VIA BELOWGRADE PIPING TO THE CATOX IN THE NORTHERN ENCLOSURE. ' - o LAH ® SP DRAIN o LLS 4. A SINGLE AUTO DIALER WILL BE LOCATED IN THE • VALVE • o HLS VAPOR EXTRACTION BLOWER NORTHERN ENCLOSURE. THE AUTODIALER WILL BE VI WITH WEATHERPROOF CONNECTED, VIA BELOWGRADE CONTROL WIRING, TO - COVER ,cc 55—GALLON THE CONTROL PANEL IN THE SOUTHERN ENCLOSURE. d CONDENSATE 'MOTOR STARTER ___ CONDENSATE CONDENSATE DRUM CONTROL PANEL 5. HEAT--EXCHANGER--SHALL BE ADDED, AS NEEDED, TO TRANSFER - BATCH (NEMA 4) REDUCE MAXIMUM AIR TEMPERATURE TO 140F AT PUMP TANK AIR SPARGING MANIFOLD. kA CAPPED DRAIN 6. SAFETY SHUT OFF REQUIREMENTS FOR CONTROL VALVE PANEL CONNECTIONS ARE LIST IN. O:ONTRACTORS --.,'i LEGEND SCOPE OF WORK. CITY CF L II:. SI = SERVICE INDICATOR GAUGE LOM = LOW OIL MONITOR f •.� co HM = HOUR METER APR = AIR PRESSURE REGULATOR �L. v' - M� 1 ap -/0 = ON/OFF LIGHT/ START/ STOP _ AFR = AIR FLOW REGULATOR cN TG = TEMPERATURE GAUGE AFG = AIR FLOW GAUGE r' u`;!'-"a 0 — �P = PRESSURE GAUGE ix = GATE VALVE(2") pRo�ECT: REMEDIATION SYSTEM TITLE: —® = VACUUM GAUGE = GLOBE VALVE(2") OPLC FACILITY: OLYMPIC PIPE LINE COMPANY PROCESS FLOW -1 PF = PARTICULATE FILTER(25 MICRON) 1/2" COMPRESSION FITTING SAMPLE PORT M DIAGRAM 0 SRV = SAFETY RELEASE VALVE Maplewood Neighborhood 0 PS = PRESSURE SWITCH —0 LAH = LEVEL ALARM HIGH `� Renton, WA o PRV = PRESSURE RELIEF VALVE —0 LLS = LOW LEVEL SWITCH Geo��EnQ�neers DATE: DRAWING No. I - —0 HLS = HIGH LEVEL SWITCH Engineers b� 1 9/01/98 SHEET 5 OF 8 5 5 • L` 2' GALVANIZED 0-25 PSI No PIPE ;,;,u� /� AIR PRESSURE 0 \ GAUGE d cn 2" GALVANIZED co o TEE (TYPICAL) —\ 2" 90' TOP HINGE 180"SWING TENSION CURE PULL POST — — GALVANIZED GAIN LINK FABRIC STRETCHER BAR o TRUSS RODS n BRAT RAIL ELBOW (TYPICAL) `1 A.iiiiiii� ��iii��ii �� .}: � i. . .ii. .ii. . . •i . i�. ♦iiiiii ♦i3 Aiiiiiiii� i�i� iiiiiiiiiiii�iii��i —� �� i�. �i�i�i�i�i�i� ►�* � �� ♦iiiii� ♦i♦ ►*iiiiiii/i ♦i. ♦ �* ♦iiiiii♦ iii��iiiiiiii��:�i♦ ♦ii�i�� iii.�i'iiii — iiiii��ii �_►ii��iii�i♦ iiiiiiiiiiii iiii4,,,,.. ♦:i - i i i♦ O O 0, O E3 ii�i�i�iiiii�+�� —iiii��i��i�i�i�i�i - —�i�i�idti,4,---��i�•#iii- %�� All‘��i��i��i�i ��iiiiiiiii. iiii��iiiiiii�!� ii _ ►ii ��•i�iiiiiiiii��OS��iiiii �iiii��•iiiiiiiiiiii ��iii 2' BALL/GLOBE I I I 6.w :i�i� �� • ��1� 1_,i �i�i i.i�iii�i.��ii�i� �• �■!.•iiii�iiiii�ie�jii�: • � �iiiiiiiiiiiiii�i --I.-1 iiiiii�ii��i•�., VALVE (TYPICAL) ,x \ 0.• �✓ , ' 9�7' ANTIC BAND �:\ TIMSTED BARBED 18 0'SVANC J'TYPESIA:J \� V • '•2'TYPES 4&6 12'ROUND SECTION/ SELVAGE , 12'ROUND SECTION,. I NOTES - 1.FENCE FABRIC SHALL BE SECURED TO GATE ® LI FRAMES 1v/KNUCKLED SELVAGE ALONG TOP EDGEW W FOR TYPES 4 es CHAIN LINK FENCE INSTALLARONS. 2.MINIMUM POST LENGTHS TYPES 1 &3 3'-8' TYPES 4&6 J'-6 0-10 SCFM SIGHT FLOWMETER �- 0-25 PSI AIR PRESSURE (TYPICAL) _ -O -0 .41 GAUGE (TYPICAL) CHAIN LINK FENCE WITH DOUBLE GATE • 2' HOSE COUPLING (TYPICAL) 2' BLACK FLEX HOSE II. k 1 • (TYPICAL OR SIMILAR) -- (TO AIR SUPPLY LINES FOR AIR SPARGING WELLS) AIR SPARGING SYSTEM MANIFOLD DETAILS DETAIL A s PVC TEE (TYPICAL) 90' PVC ELBOW _ - — - � (TYPICAL) - --- — - - X2" PVC GATE VALVE lt< —)xl 1 1/4" TAPPED SAMPLE PORT Cif?'t.::;F: I.:_i! (TYPICAL) ❑ ❑ V(TYPICAL) gva00 cr, VAPOR EXTRACTION PIPING 7—FROM WELLS AND VRS-1 rum n{t"r ,sue N I�IaD•7,2 k C. o PROJECT: REMEDIATION SYSTEM TITLE: VAPOR EXTRACTION SYSTEM SCHEMATIC MANIFOLD DETAILS OPLC FACILITY: OLYMPIC PIPE LINE COMPANY CONSTRUCTION § LEGEND DETAIL B DETAILS o Maplewood Neighborhood Renton, WA o — AIR FLOW DIRECTION Geoff— Engineers DATE: DRAWING No. .. • \4/ (1 1 9/01/98 SHEET 6 OF 8 6A 6 . . REMOVABLE CAP TO CHECK " FLUSH GRADE OR BURIED THREADED WELL CAP WATER LEVELS AND VACUUM LOCKING WELL MONUMENT(12 DIA.) LOCKING WELL MONUMENT --\ C-9 (12" DIA.) i.-..-TRENCH CROSS SECTION REFER TO DETAILS D & E 5-- GROUND SURFACE GROUND SURFACE SECON REFER TO DETAILS D & E (.6 0 0 ' ; .4- • _______....- : 0) MONUMENT SET IN CONCRETE MONUMENT SET IN CONCRETE--w- : CO 2. MIN. 0 2-BRASS 0 CHECK VALVEI : l. 2" DIA. SCH. 40 PVC WELL CASING _.--- ---..' •• i _• AUGERED BOREHOLE -...--AIR SUPPLY LINE .- FROM MANIFOLD 2" SCH 40 PVC TEE 2" PVC PIPE AUGERED BOREHOLE------------ - ...-2.0 PVC TO VACUUM BLOWE 13' SEE DETAIL B -1.-- -..- -..f•-,..- .:i.., 2"DIA. SCH. 40 PVC 2 BENTONITE SEAL WELL CASING(3.- 22.5) 175. 20 5 SCREENED INTERVAL.f VACUUM) .-:-:.:-....:-:.:'-_-::::.:-:-:•:.:.:-::.:.:. 2' 0.020 SLOT SIZE 25 ,:.::-.•:.:•::::: ':':':':':':':::.: ANNUR SPACE FILLED Th .1• :.:.:•:.T..:: .:•:•:•:.:.:•:•:.:. MEDIUM GRAINED SAND WATER TABLE .:-:.:.:.::::..C::-:..:.:-:.:-:.:.:-:•: APPROXIMATELY 9.-- 13' BELOW GRADE (OVER SEASONAL FLUCTUATION) it t .f,.• .f: . t t V :::-::::::::::::::, WATER TABLE 'K. It •-, .' ''.; t APPROXIMATELY 9.-13. BELOW GRADE (OVER SEASONAL FLUCTUATION) ...• • • . • it . ..t.:-:..;. ';.: / t CEMENT-BENTONITE GROUT .. •.- • • 20 SCH 40 PVC CAP- k f .....:.%: 'r.:- • TYPICAL CROSS SECTION . ..; . ,;;....:: i I VAPOR EXTRACTION WELLS MIN. 2' BENTONITE SEAL . . . -.'.. 't Ail ANNULAR SPACE FILLED MTH SAND MAX. 2' ABOVE SCREEN - - 2 SCH. 40 PVC CAP Note: Depths shown will vary depending on geology " ::_i'r.FIR— 2'SCREENED INTERVAL(SPARGE) 0.020 SLOT SIZE encountered at the time of drilling. . _ . Note: Depths shown will vary depending on soil conditions encountered at the time of drilling. • TYPICAL CROSS SECTION AIR SPARGING WELLS NO SCALE . NEW ASPHALT OR CONCRETE '4,id":-AP*.elip. AN-iii or-0 k ificier. 4fiFilve-t•sy. li,„„- . '1,44-groriti TO MATCH EXISTING 41111.1b,..4040:1111-0 filk f--41", .r. ,411111,-.1P aPribile wyl-pallyti,./CIVII.A-.1.11V-Titogigy4td.reeb,..,. . .0k10etr14..01.II2-444.1114:11i1A6llie1*0)I0t 144.•4-1.11924g1A..,tt-a..ka.t-efkiertaVvk'oAftrg4me-alP.Tkeikorrtagk-ifIiIl ilke"tf0-f1i0.l0la14ti6ie, LA " GRAVEL ...7.7 ...—..- ...- .- ASPHALT AVEMENT OR(4 CONCRETE 1=T- - 1=1 1 Hi 1 Hi 1 i=t11=1 1 i-9 I I 2' MIN 7,111=„,111-=,„111=.„111=„,111=111—= 119 117111=1 „1 1=111=111=1' BURIED PIPE MARKER (METAL) -1 1 1-1 1 1-111-1 DC-)C27 C'r4C' , ________________ -- — - ------__ ----fl 1=-111= 1=111=1-1 1=1 1 1=1 1 1=111=111- — _. - 1-------MI—WI—TI:9,,Gro-'-,° El"BASE ROCK - 0 t---1 1 1=W1=M=1- ... =1 1 1=1 11=1 1 1=1 I I= -= -—- =:. 2' MIN 11=--- -1—=111=T --9 ((gP()' '0071°G,T=I I 19 I =1' BURIED PIPE MARKER NATIVE SOIL 2.. PVC. SCHEDULE 40 — • • -_—_- - 1--1-11--17 _—__ --= —1--- AIR SUPPLY LINES (TYPICAL) - •-_-_-; ': 0'.::, .,_-_::1 I I' '-..- - NATIVE SOIL .1=-1 1 1=-1 1 17. 005°C,106 a0CP CbOD c''T- (METAL) L- I— —Ili=I I I= . - o'...:,i-0'• - • .---i' i:._,.s.: — - — — — — —17=110 til=111 2" SCH 20 pvc VAPOR EXTRACTION LINES (TYP.) CrlY --::-,: — ' COMPACTED BACKFILL I:LC—III-111— — —___-= — • 2" SCH 40 PVC AIR SUPPLY LINES (TYPICAL) SAND. PIT RUN OR COMPACTED NATIVE — =111—I —111-111— 1 III I : -OLT 0 1- 11J'113 2" SCH 40 PVC VACUUM LINE (TYP.) VARIES 01- 1=111 1=1 1 1= 'S=1 I 1: k6 1.5' MIN. -I II-1 I I-11 I-1 I I-111—i I I-- LEGEND VARIES 1.5' MIN. I TRENCH CROSS SECTION - LANDSCAPED, GRASS AND GRAVEL AREAS CO NOTE: CITY OF RENTON STANDARD DETAIL SHOULD BE 11010' AIR FLOW PATH (THEORETICAL) co DETA E• FOLLOWED IF DIFFERENT THAN SECTION SHOWN. IL -......... TRENCH CROSS SECTION - PAVED AREAS PROJECT: REMEDIATION SYSTEM TITLE: ......_ co DETAIL D OPLC 0 . FACILITY: OLYMPIC PIPE LINE COMPANY CONSTRUCTION Maplewood Neighborhood DETAILS 0 — .'s. 1 DATE: Renton, WA o Geo,Z0P'Engineers _ DRAWING No. 6B 9/01/98 SHEET 7 OF 87 0 . a f' 2 N o VAPOR EXTRACTION SYSTEM MANIFOLD (NOT ALL PIPES ARE SHOWN) cp o SEE DETAIL B FIGURE 6A 55-GALLON MOISTURE 8-FOOT HIGH CHAIN-LINK SEPARATOR ON VACUUM FENCE COMPOUND ON 4" 2" PVC SCH 40 WITH LOW AND HIGH LEVEL THICK CONCRETE PAD VACUUM LINES SWITCH AND HIGH LEVEL ' FOUNDATION (TYP.) ALARM �► 0 0( 0 VRV J J / PF , 0 POWER POLE 2" AIR SPARGING VACUUM 30, 240V SERVICE t LINES TO AIR SPARGING BLOWER(S) WELLS (TYP.) O O CONDENSATE _ AIR SPARGING BATCH TANK CONDENSATE (NOT EAL M PIPES D 200 GALLON w/ /." TRANSFER PUMP n ARE SHOWN) HIGH LEVEL ALARM U (SEE DETAIL DRAWING 6A) ,® 0-25 PSI SYSTEM / 411D AIR PRESSURE GAUGE sP N___. DOUBLE GATE cn PRESSURE RELEASE VALVE SEE DRAWING 6A w o Q TG _ pF CATOX <w VAPOR AIR COMPRESSOR TREATMENT +IN 61OR BLOWER WITH UNIT z z i- HEAT EXCHANGER 00 w t 2" GALVANIZED IF NECESSARY w SP PIPE OR SIMILAR � 4'' THICK 2" BALL/ CONCRETE PAD GLOBE VALVE EXHAUST STACK NOTES: • 1. THE CATOX WILL BE LOCATED IN THE NORTHERN ENCLOSURE. THE VAPOR EXTRACTION SYSTEM EXHAUST FROM THE SOUTH SYSTEM WILL BE ROUTED VIA BELOWGRADE PIPING TO THE CATOX IN THE NORTHERN ENCLOSURE (MANIFOLD NOT LEGEND: SHOWN.) limo FLOW ACTUAL ORIENTATION OF COMPONENTS MAY VARY FROM SHOWN. Ci-I Y' �� t �—' FLOW DIRECTION TG = TEMPERATURE GAUGE 3. ELECTRICAL AND CONTROL CONNECTIONS NOT SHOWN. - C.4.-.P CI y ad ol SP = SAMPLING PORT , �7- • „_— tO PF = PARTICULATE FILTER N co VRV = VACUUM RELIEF VALVE 0 (DILUTION GATE VALVE) PROJECT: REMEDIATION SYSTEM.. TITLE: OPLC FACILITY: OLYMPIC PIPE LINE COMPANY SCHEMATIC o Maplewood Neighborhood EQUIPMENT LAYOUT v �p Renton, WA PLAN VIEW - Geo'rEngineers 1 DATE: g/01/98 SHEET 8 OF 8 DRAWING No. 7 1 8 /f 40 - - — Cid IIA 0 332s '\'� \\ \ NEWPORT AVE SE \ ^— ""—"° %`-;; \' y\\ 55� sz\ \1 _ ---- ----SS---7d s—-------- ' — arb —4 \t- ---- �.�.... ..� .. \ a zo\v�ro t_ - ©�=G=- Imo.) crass 1i1 ,......_ �� ^�Cy[t_t (l fro)\ / \ A s_tg P`�'n ts•o Ductae Iron vra!<r Lina % \ i Connelell \ zo feat Norm or\c m —'�-�— --�-'�/ rin1111 . •-• walkway 1 en 1 •32\ /' �As-tB�� 1 ', r /r �VE-13 ," 532 II I :20 ti 111---- -.-_.— '/!/\ /vE-ta/ concrete I f \ ', \ -i - -- 1. 333] %l \�.�' Driveway iI \ �1 I, ]SOB 1 I 1 \ Cmaele /�_ AS-16l B'chainlink fence Orry way/ I foal Diameter tree ,I \ Mm 5ats I, \ e OriMvewpy VE-IS/'. 25 fee!tall I l Sprinkler Cox sidewalk(lyp.) 'I I AS-15 // IL 11 `E-8 AS_13 1. AS_12 V[-7 \ I I\ \ I 1• I I II t•ri I I I II VE-181•r Proposed SouthernConcrete AS-10 \RS-1 4a11 !AS-3 li 1 IEquipment Playground AS_14 \ 4 chain,.fence I •I,11 — _ Enclosure yy •118 I ' , I I II VE-4 I \ Baseball -'w�`- A$51 1 ,1 I O 0 (,c'nci9h t- O Diamond AS-II p �A I 'I !,I1 1' \\ \ Cr2 foot diameter tree o c wall —-- - —--—--�rnse-- - - \ ' _ I AS-2 3'diameter tree 1 1 1 lJ 3o feet tall T) \ I O. 1 I \ \ Concrete' \ •17 I VN1 , 11 yE_3 40 feel fall I 1 0 . N z mot dlamee<r tree \ I As-7! I I 1 ••43 I . '\ \ s ]o rear tau 19 I w AS-1 Block Valve Endolu \\\ , \ �f J_ Dr. ,�. t ra \ 0 \ O 20.Pipeline(OPEC)8'deep 0 ' 1 1, 838 I \ I 1 I 1 to , \ '`,� 45 feet 2 foot toll tree \ I6•Pipeline(OPEC)5.5'dew I I `` pit t ) y \ ___ Cancr<I slob Added trenching t AS-al 2D 1 1 �1yIICo I \' l `,\ v Saut..System-• on eel soum Normem System 1 ,Ip 1 �� I l \ n vapor A$-4 1'Hi• Chool'k Fence \ \`\\ CN'\ 2 mat diameter tree extraction exhaust to ,1 r—\ ,I 1 \\ \ 30 feet tall north enclosure for _w� 1 _ 1 \ \ vapor treatment \ a K 1 Irk, ` 2 1-1-——mot_1 \ \ Sidewalk concrete(pp) \ ,hydr \ �, ,\ `1\\\`\ Z A -- A • PraPosed NarNern� \\ \ N� \ \, Maplewood Park \ PAAsphaltd 11 m\`I t - Equipment Enclosure ,\ \`\\. \�/ \ tO surface I\ �,I \- . True R/W \ R/W ''\ \ Reslroom \ \� \ �/ Site North \,A \\ Asphalt Dam , • • cross(t,p.)J\ ,\ \ __---- \ S 30 o Is 1 \ / r \\ \ A \ SCALE IN FEET • , \ EXPLANATION: COCD SEE LEGEND & SYMBOL SHEET n CAI 03 0 PROJECT:REMEDIATION SYSTEM OPEC TITLE: FACILITY: OLYMPIC PIPE LINE COMPANY SITE PLAN oNotes: 1. The locations of all features shown are approximate. - Maplewood Neighborhood 0 2. Underground utilities to be verified by locate. Not all utilities are shown. ..0.((�tA Renton, WA Geo Enrt{neers I DRAWING No. o Reference: Drawing entitled "Cedar River Recovery Area Plot Plan" by Olympic Pipe Line Company, 10/16/86. �� 7' 1 DATE: 9/01/98 snEET 3 OF 8 3 • • 1.0 GENERAL REQUIREMENTS 3.0 PROCESS EQUIPMENT INSTALLATION a N 1. Equipment shall be placed in accordance with the g 1. Contractor shall locate all underground utilities before construction and Equipment Layout (Drawing o a take all necessary precautions to prevent damage to or disruption of 7) and the Process Flow Diagram (Drawing 5) o ,existing underground utilities during construction. Contractor shall be 2. Contractor shall exercise due care to protect equipment from theft or responsible for any repairs needed. damage. 2. Contractor is to comply with all Federal, State and Local safety and environmental laws and ordinances. 3. Contractor is responsible for protecting the environment during construction 4.0 FENCES AND GATES by protecting trees and shrubs, containing any run-on or run-off, controlling 1. Contractor shall install suitable 8-foot tall chain link enclosures with sight dust, and containing any contamination caused by the contractor. The contractor shall dispose of any construction debris off site. obstructing slats. Standard enclosures shall be dimensioned as shown on 4. Specifications and notes supersede drawings-any conflict is to be brought Drawing 3. to the attention of GeoEngineers for resolution. 2. The entry doors shall be installed with a latch capable of being 5. OPLC is responsible for obtaining permits and environmental reviews. secured with a padlock. 6. It is the contractor's responsibility to verify all dimensions and conditions before 3. GeoEngineers will post a sign noting emergency contact numbers for system starting work. GeoEngineers shall be notified of any discrepancy for resolution. operation. 7. Construction areas are to be clearly marked with cones, barricades, or other approved safety markers, as required by local codes, to restrict access to unauthorized persons and provide a safe work area. Open trenches shall be 5.0 PIPING AND VALVES fenced or covered daily. 8. The contractor shall warranty all materials and workmanship for a period of 1. Installation details are provided in Drawings 6A and 6B Construction Details. one year. Defects shall be corrected at no cost to OPLC. 2. All piping and conduit shall be supported in accordance with local codes 9. Contractor shall provide GeoEngineers with "AS BUILT" drawings to prevent sagging or over-stressing of the pipe and connections. All piping (accurately marked up copies of original drawings) within 30 days of final shall be supported so that no load or stress is transferred to any equipment. system installation. 3. Process piping shall be pressure tested at 15 psi and demonstrated to maintain 10. Contractor shall notify GeoEngineers 48 hours prior to the start of work. that pressure for one hour. 11. Contractor, with the aid of GeoEngineers, shall coordinate construction activities 4. Process piping inside the enclosure shall be labeled with corresponding well to minimize disruption of existing residential and park uses. numbers. 5. Where piping is routed aboveground, inside enclosure, the piping shall be supported by unistrut and shall be per code. 6. Utility piping must be installed per code. 2.0 SITE WORK 7. All underground process piping shall be minimum of Schedule 40 PVC with primed and cemented fittings. Earthwork for trenching 8. Valves shall be labeled for their use and shall be installed as shown in 1. Existinglandscape materials, detailed drawings. p grass or gravel are to be reused when possible and restored to original appearance at trench locations that are within landscaped, grassed or graveled areas. 2. Excavate and stockpile soil encountered during trenching to required subgrade 6.0 ELECTRICAL elevations. 3. Backfill trenches with soil removed from the trenches after pipes have been pressure 1. Contractor to provide electrical and equipment wiring drawings for permit purposes. tested. Hand tamp around pipes. Compact adequately to support surface material (landscaping, grass, gravel or pavement.) - 4. Contractor shall notify GeoEngineers if contaminated soil is encountered during NOTE: trenching activities. GeoEngineers will conduct soil sampling as necessary. 5. Place contaminated soil on plastic sheeting and cover in accordance with best Refer to contractor scope of work for project specific construction specifications. management practices. 6. Refer to contractor scope of work for details regarding protection of existing utilities co trenching. 0 N m Paving 0 PROJECT:REMEDIATION SYSTEM TITLE: 1. Existing pavement, where present, is to be saw cut when removed to provide a OPLO FACIum OLYMPIC PIPE UNE COMPANY CONSTRUCTION 3 square vertical joint for repaving. 0 2. Pavement shall be replaced with asphalt or concrete to match existing pavement Maplewood Neighborhood SPECIFICATIONS 6 R thickness and strength. n^^ � Renton. WA 0 3. Pavement and base materials to conform with the City of Renton requirements. Ge° 'S a 1 DATE: 9/01/98 SHEET 4 OF 8 DRAWING No. 4 4 i AIR SPARGING SYSTEM w N O O rn co 0 PRV /� /� (TYPICAL AT MANIFOLD, / CID l I'1 - SEE DETAIL FIG.6A) AIR INLET OUTLET SILENCER _ T 7 CLEAN OIL-FREE r v AIR TO AIR N SPARGING WELLS ATMOSPHERIC PARTICULATE W. Cci) .AIR FILTER $I HM -�0 AS/VE DESIGN PARAMETERS OIL-LESS TO ELECTRICAL COMPRESSOR MOTOR STARTER SUPPLY AUTO OR BLOWER CONTROL PANEL DIALER - REFER TO TEXT OF CONTRACTOR REQUIREMENTS WITH WEATHERPROOF (NEMA 4) (NOTE 4) SCOPE OF WORK. COVER(NOTE 4) - - - PROGRAMMABLE TO EXTERNAL TIMER PHONE LINE CATOX EXHAUST VAPOR EXTRACTION SYSTEM SP NOTES: 1. ENCLOSURE WITH PROGRAMMABLE TIMER CONTROLS CATOX FOR "INDIVIDUAL ZONED" CONTROL OF SOLENOID. VAPOR MAKE-UP PF ❑ TREATMENT 2. ALL ELECTRICAL EQUIPMENT AND WIRING SHALL ... AIR INLET UNIT BE IN UL APPROVED AND IN COMPLIANCE WITH NEC FROM VAPOR EXTRACTION WELLS , TX (NOTE 3) AND LOCAL CODE REQUIREMENTS. (TYPICAL AT MANIFOLD) ow- Q I (SEE DETAIL FIG.6A) 3. THE CATOX WILL BE LOCATED IN THE NORTHERN S '4 t ENCLOSURE. VAPOR EXTRACTION SYSTEM EXHAUST FROM --►-( Cr) ® THE SOUTHO SYSTEM X IN BE ROUTEDT VIA NCO SURE. o LAH /u\ Sp PIPING TO THE CATOX IN THE NORTHERN ENCLOSURE. DRAIN o LLS 4. A SINGLE AUTO DIALER WILL BE LOCATED IN THE VALVE o HLS VAPOR EXTRACTION BLOWER NORTHERN ENCLOSURE. THE AUTODIALER WILL BE ixiWITH WEATHERPROOF CONNECTED, VIA BELOWGRADE CONTROL WIRING, TO LAH COVER I 55-GALLON THE CONTROL PANEL IN THE SOUTHERN ENCLOSURE. p CONDENSATE MOTOR STARTER CONDENSATE CONDENSATE DRUM CONTROL PANEL - 5. HEAT EXCHANGER SHALL BE ADDED, AS NEEDED, TO TRANSFER BATCH (NEMA 4) REDUCE MAXIMUM AIR TEMPERATURE TO 140'F AT PUMP TANK - AIR SPARGING MANIFOLD. LviCAPPED • DRAIN 6. SAFETY SHUT OFF REQUIREMENTS FOR CONTROL VALVE PANEL CONNECTIONS ARE LISTED IN CONTRACTORS LEGEND SCOPE OF WORK. to SI = SERVICE INDICATOR GAUGE LOM = LOW OIL MONITOR rn HM = HOUR METER APR = AIR PRESSURE REGULATOR N -/0 = ON/OFF LIGHT/START/STOP AFR = AIR FLOW REGULATOR m TG = TEMPERATURE GAUGE AFG = AIR FLOW GAUGE 0 —©= PRESSURE GAUGE Xi = GATE VALVE(2") PROJECT:REMEDIATION SYSTEM TITLE: —p= VACUUM GAUGE pq = GLOBE VALVE(2") O P LC FACILITY: OLYMPIC PIPE LINE COMPANY PROCESS FLOW 3 PF = PARTICULATE FILTER(25 MICRON) 1/2" COMPRESSION FITTING SAMPLE PORT Maplewood Neighborhood DIAGRAM o SRV = SAFETY RELEASE VALVEo ti PS = PRESSURE SWITCH LAH = LEVEL ALARM HIGH Renton, WA o PRV = PRESSURE RELIEF VALVE —0 LLS = LOW LEVEL SWITCH Geo1�Enp�neers 1 DATE: DRAWING No. —0 HLS = HIGH LEVEL SWITCH �./ U' 9/01/98 SHEET 5 OF 8 5 5 '.,_ 2'GALVANIZED I 0-25 PSI o PIPE AIR PRESSURE —V GAUGE °� 2'GALVANIZED .A. ""' oo o TEEIGM.) 2'90' 10�'*1 - _ teo•51ANc GALVANIZED CHAN MC FABRIC S mr NAN 1e MSS RODS �.c P1A7.Fos? ELBOW(TYPICAL) ♦....�.♦ ` ••- -**** +,w.;... A��.CE L_L p�♦ •;•�. 'N►N/'. .-. Cs �,444i S '.♦i♦.♦.♦Oe* !.♦ •.�i♦i♦�♦�, -►00�♦i♦ :�,�,,,,, O♦.♦.♦!—-.♦.♦i♦i♦�O♦.♦.♦.Q i♦.♦.♦.Op♦�.�.�.� 2' GLOBE ....:-.. :--I - ._........ ....�.....,VALVE(TYPICAL) .,.,, T nr 10N6/; I ::�:�..• Ip- I: . AB%C BAND S I, t 18P SLANG .Y TF6/ J • SELVAGE Y T &IRS I it1Y ROUND YCDW, w; ,r q.FD 1Y R .CDBV/.., I 1.FENCE FABRIC SHAD.PE SECURED TO GAM .- ..... FRAMES v 1 LED ALMS TOP EDGE W 1 I1I Fit zFOR I4&I CHART MC MICE MOM POST 10Nc1Ns TFES1la C-LP 0-10 SCFIA SIGHT TFFS s•e e•-e' 0-25 PSI AIR (TYPICALFLOWM) -0 '® '®I� PRESSURE GAUGE(TYPIGAL) CHAIN LINK FENCE WITH DOUBLE GATE 2'HOSE O COUPLING( 2'BLACK FLEX HOSE (TYPICAL) (TYPICAL OR SIMILAR) ono' (TO AIR SUPPLY TINES c FOR AR•SPARGING WELLS) ei a • AIR SPARGING SYSTEM MANIFOLD DETAILS DETAIL A PVC TEE (TYPICAL) 90' PVC ELBOW UM ;■� (TYPICAL) • // /' 12 • 2" PVC GATE Vim) 11 4ICE TAPPED SAMPLE PORT ) co VAPOR EXTRACTION PIPING 1�.1 FROM WELLS AND VRS-1 co o PROJECT:REMEDIATION SYSTEM TITLE: VAPOR EXTRACTION SYSTEM SCHEMATIC MANIFOLD DETAILS OPLC FACILITY: OLYMPIC PIPE LINE COMPANY CONSTRUCTION o LEGEND DETAIL B Maplewood Neighborhood DETAILS 0 o . � AIR FLOW DIRECTION Geo1�`�Engineers Renton, WA `� 1 DATE: g�01/98 SHEET 6 OF 8 DRAWING No. 6A 6 N. RUSH GRADE OR BOWED THREADED Y.Et1 CAP REMOVABLE CAP TO CHECK LOCIUNC WELL MONUMENT OrDIA) LOC_KMC WELL MONUMENT WATER LEVELS AND VACUUM0 (12 DIA) —TRENCH CROSS SECTION REFER TO DETAILS 0 at E TRENCH CROSS SECTION REFER TO DETAILS D&E GROUND;\\\\%/\\ i GROUND SURFACE �. 0 a \/\\ \\\\G\`i�`/`gip\�'; co MONUMENT SET IN COBBlETE�I MONUMENT SET IN CONCRETE 2'MIN. 2'BRA55 '� I • a1ECN VALK 2'DIA SCH.10 PVC WELL CASING AUGEAED BIXia10LE AIR SUPPLY LANE 2'SCH 10 PVC TEE—":', ` rRW MAN60LD ' • \ 2'PVC PIPE - - 1]' SEE OCTAL B AUGERED BOREHOLE 2'0 PVC TO VACUUM BLD T'qA SOt.t0 PVC 2'BENTONITE SEAL J:::::::' 'WELL CASING(0'-225') 17.5 gas M SCREENED INTERVAL FVANUMI .. 0.020 SLOT SIZE WATER TABLE ANNULAR SPACE FILLED NTH APPROXMATELY 9'-IN'BELOW(RAGE ".7 MEDIUM GRAINED SAND - (OVER SEASONAL FLUCTUATION) t ? t t ` E APPROXIMATELY 9'-15'BELOW GRAWATER DE . ,.- (OVER SEASONAL FLUCTUATION) 1 t ./ 1 t CEMENT-9ENTONDE GROUT—" 2'0 SCH 40 PVC CAP— t 1 1 TYPICAL CROSS SECTION YIN.z BEh1TCRITE SEAL •`, 1 VAPOR EXTRACTION WELLS • ANNULAR SPACE FILLED w tD t r ._:_`_�IWIT SALAD MAX.2'ABOVE SCREEN - z's . PVC CAP .s —2.SOtEp4m INTERVAL(SPARE) Note: Depths shown will vary depending on geology 0.020'SLOT NBC - encountered at the time of drilling. Note Dep0e above e0 may depend,en coo conditions encomtertd at the time el d'WI o. TYPICAL CROSS SECTION AIR SPARGING WELLS NO SCALE NEW ASPHALT OR CONCRETE :�I�! •474T-• II •' TO MATCH EXISTING 01fiy¢1�.:f'�:0 1411A4'sf4' f- VVV•r!f :�:f!'>'.4f! i�iit! :�' LANDSCAPING,GRASS OR GRAVEL ��1.fl�f�i:��ifi ��1•:!i :f>.'.t �Vf �rtf i!�ef�i ��t�fl�� LuYEH(DrrTH vARIEs) ASPHALT OR CONCRETE — — '� �( __— PAVEMENT(1 YIN.) I I E1I-III-1 I I-.„' ,� 1-„-ill I I I=I I CI 11=I ___ ____ _ _ I 91 I 11=I- =ITi=11i—I�I- I= — — __V d vim- _±-I - I-I T-111=11 I=ITi_ I- PirP 1 ITi=I T- ITiT 'I I-III-I 11-11 I- I I I-11 I=I 1 I=i 1 _ I=I1 I=III- BURIED PIPE MARKER(METAL)-I11=1I1-1I1-I3°�'0C-,,00�„00 moo- 2'MIN -II1T1 I-1 --= HI I T— _ oo -'SE ROIX)� 0�=1�I-1�1—n 1- I ITT -I�I I SIT T _ - 2'MIN ••III I I III-I I ISO o, III-1 1I I I I. NATIVE SOIL - I I�-�I.I-I _ �, 2'PVC,SCHEDULE tD• 1 III-I � =III=11—I BURIED PIPE MARKER JJJ -III-I �"•0CI6O Or�0")'•O05C — — (METAL) ��i1 I AIR SUPPLY LANES(TYPICAL) NATIVE SOIL `J`/- Q n n 2'SEA t0 PVC AIR SUPPLY LANES SANG,PIT RUN OR I r4.I�a h�•.+ F�Ii 2'SCH 20 PVC VAPOR EXTRACTION LINES(TIP.) COMPACTED BAIXFlLL (TYPICAL) COMPACTED NATIVE IelAr= l—Ii 2'SCH 10 PVC VACUUM LANE(TEFL) SOIL BACKFlLL 1 171g1. I I IFI III LEGEND I--- VARIES 1.5'MIN. --I . TRENCH CROSS SECTION - LANDSCAPED. GRASS AND GRAVEL AREAS lcn A NOTE CITY OF RENTON STANDARD DETAIL SHOULD BE �I►AIR FLOW PATH (THEORETICAL) FOLLOWED IF DIFFERENT THAN SECTION SHOWN. DETAIL E 01 TRENCH CROSS SECTION - PAVED AREAS PROJECT:REMEDIATION SYSTEM TITLE: o DETAIL D OPLC FACILITY: OLYMPIC PIPE LINE COMPANY CONSTRUCTION J 3 Maplewood Neighborhood DETAILS Renton, WA o 13 Geo1�Engineers DATE: 9�01�98 SHEET 7 OF 8 DRAWING No. 68 7 0 1 ,' Dose of Magog Slap. SE Bni ST • ' 0 any_ o �■ o■ . o ❑ ao� ■ Ce . O `�.` "-_'4' '. ■ D� ,L,,, `:lock Valvq Silo Q\ �O- „,_ ,q, 1�� sr4 it,,,,, el gSN Ayr VQ ,. x4; .��20 i�� '`,. 4 4'frgzi,siri#1 nigril 4;0 no,i6i607,1411---. lop' 444Vie `Si wt. 0 iiii ,„„t._, _..,,,,, 4„,,,,.,. ,P., 7 i 3, _ , „,:tt. _I_l�t�t` Pat �'' \' �dl� �� .)....,SE STN 57 RNL� 1_l�l At_�o� 031 0 // .� �.�.,' Maplewood Golf Coulee N11111%,4* ' „,, s., .„„.,,,,,,„ sA orw-u IXPIANAnON: ' Trv.� �� 10-16 TEST Prr(APRIL 1998) ♦ . 4 m- }1. SOIL PROBE(APRIL ismSRs NaA 1• MONITORING WELL(OLYMPIC PIPE UNE COMPANY) N AM• AIR SPARGING WELL _ A oy... ;A O ABANDONED MONITORNG WELL Dm.et Nancy Slap 100 MONITORING WELL NOT LOCATED IN 199E • CITY OF RENTON WELL O 2/p 400 AW-T♦ ABANDONED RECOVER'NELL Ns-to ABANDONED VAPOR RECOVERY SRshAl SCALE IN FEET FORMER PRODUCT SEEP n OPLC 11Raa REYTDATON Midnnr, .am,GLYMRC PPE USE CO PA! NEIGHBORHOOD ' Nate:1.The locations of all teaturea shown am appmzlmat.. Maplewood Neighborhood DETAIL MAP 2 1P-7 was situated In Na same loce7an as SP-11. __ _ _._ .. _. _ • r Fmivmre __ Penton.WA .. N o0 VAPOR EXTRACTION SYSTEM MANIFOLD ' a (NOT ALL PIPES ARE SHOWN) o SEE DETAIL B FIGURE 6A 55—GALLON MOISTURE 8—FOOT HIGH CHAIN—LINK SEPARATOR ON VACUUM - - FENCE COMPOUND ON 4" 2" PVC SCH 40 WITH LOW AND HIGHHIGH LEVEL SWITCH THICK CONCRETE PAD VACUUM LINES ALARM ' FOUNDATION (TYP.) • O •KK. _ VRV 11 0 2" AIR SPARGING POWER POLE VACUUM LINES TO AIR SPARGING = 30, 240V SERVICE WELLS (TYP.) BLOWER(S) • CONDENSATE N AIR SPARGING BATCH TANK CONDENSATE SYSTEM MANIFOLD 200 GALLON w/ + TRANSFER PUMP (NOT ALL PIPES HIGH LEVEL ALARM 41, ARE SHOWN) (SEE DETAIL DRAWING 6A) �� 0-25 PSI SYSTEM ♦ ''' AIR PRESSURE GAUGE sP DOUBLE GATE N PRESSURE RELEASE VALVE SEE DRAWING 6A w p Z m 0 CATOX a a- : VAPOR `- AIR COMPRESSOR TREATMENT 0 v i�._ OR BLOWER WITH S UNIT z c7 HEAT EXCHANGER 0 0 2" GALVANIZED IF NECESSARY w PIPE OR SIMILAR j SP 4 THICK 2" BALL/ CONCRETE PAD GLOBE VALVE \_. - EXHAUST STACK NOTES: 1. THE CATOX WILL BE LOCATED IN THE NORTHERN ENCLOSURE. THE VAPOR EXTRACTION SYSTEM EXHAUST FROM THE SOUTH SYSTEM WILL BE ROUTED VIA BELOWGRADE PIPING TO THE CATOX IN THE NORTHERN ENCLOSURE (MANIFOLD NOT - - LEGEND: SHOWN) 2. ACTUAL ORIENTATION OF COMPONENTS MAY VARY FROM SHOWN. 11111 FLOW DIRECTION TG = TEMPERATURE GAUGE 3. ELECTRICAL AND CONTROL CONNECTIONS NOT SHOWN. m a SP = SAMPLING PORT 11, PF = PARTICULATE FILTER m VRV = VACUUM RELIEF VALVE 0 (DILUTION GATE VALVE) OPLC PROJECT:REMEDIATION SYSTEM TITLE: SCHEMATIC -.I FACILITY: OLYMPIC PIPE LINE COMPANY EQUIPMENT LAYOUT 0 Maplewood Neighborhood b '� Renton, WA PLAN VIEW o GeoljEngineers DATE: 9/01/98 SHEET 8 OF 8 DRAWING No. 8 — J l l _ c2 e //2.2.-77J 4, BOARD OF PUBLIC WORKS 8:30 a.m. City of Renton Wednesday,November 14,2001 Conference Room No. 511 AGENDA 1. CALL TO ORDER: 2. APPROVAL OF MINUTES: Meeting minutes dated,November 4,2001 are • unavailable. 3. REQUESTED ACTION: • OFF-SITE DEFERRAL, LONG'S PLAT, LUA 00-123 PP, Union Ave. and N.E. 28th Ct. - applicant requests a deferral to install rockery along the frontage of the property at 9636 Union Ave. N.E. for a 6-month period of time to complete recording of the plat. 4. OLD BUSINESS: • VARIANCE, OLYMPIC PIPE LINE COMPANY, L-U-A-98y136 3400 S.E. 6th St. - applicant reuests an Underground Variance extension for three (3) years for the installation of underground utility lines (electric device) to run treatment equipment for a soil remediation system. 5. ADJOURNMENT: BOARD OF PUBLIC WORKS 8:30 a.m. Renton Municipal Building Wednesday,November 14,2001 Conference Room No. 511 IN A I ,NDANCE: Dave Christensen,Utilities Systems,Acting Chairman Larry Meckling,Building Official Jim Gray,Fire Juliana Sitthidet,Board Coordinator Mickie Flanagan,Recording Secretary Judy Walter,PBPW Administration VISITORS: John Long,Long Classic Homes MINUTES 1. CALL TO ORDER: Acting Chairman Christensen called the meeting to order at 8:30 a.m. 2. APPROVAL OF MINUTES: Meeting minutes dated November 7,2001 were unavailable. 3. REQUESTED ACTION: • Off-site Deferral,Lony's Plat,LUA 00-123 PP,Union Ave. and N.E.28th Ct. - Applicant is requesting a deferral to install rockery along the frontage of the property at 9636 Union Ave.N.E. for a 6-month period of time to complete recording of the plat. Action: Following a brief discussion it was Moved by Meckling,seconded by Gray to approve a deferral for a 6-month period,until May 21,2002,subject to the following conditions: 1) Applicant shall comply with all King County permitting requirements;and 2)that a security device in the amount of $9,483.56(150%of the estimated cost),be posted with the city. MOTION CARRIED. 4. OLD BUSINESS: • • Variance Extension Request to the Underground Ordinance,Olympic Pipe Line Company,LUA 98-136,3400 S.E.6th St. - Applicant requests an Underground Variance extension for three(3)years for the installation of underground utility lines(electric device)to run treatment equipment for a soil remediation system. Action: Moved by Meckling,seconded by Gray to grant an extension of said variance until November 14,2004. MOTION CARRIED. 4. ADJOURNMENT: Acting Chairman Christensen adjourned the meeting at 8:45 a.m. BOARD OF PUBLIC WORKS 8:30 a.m. Renton Municipal Building Wednesday,November 14,2001 Conference Room No. 511 IN AFIENDANCE: Dave Christensen,Utilities Systems,Acting Chairman Larry Meckling,Building Official Jim Gray,Fire Juliana Sitthidet,Board Coordinator Mickie Flanagan,Recording Secretary Judy Walter,PBPW Administration VISITORS: John Long,Long Classic Homes MINUTES 1. CALL TO ORDER: Acting Chairman Christensen called the meeting to order at 8:30 a.m. 2. APPROVAL OF MINUTES: Meeting minutes dated November 7,2001 were unavailable. 3. REQUESTED ACTION: • Off-site Deferral,Long's Plat,LUA 00-123 PP,Union Ave. and N.E.28th Ct. - Applicant is requesting a deferral to install rockery along the frontage of the property at 9636 Union Ave.N.E. for a 6-month period of time to complete recording of the plat. Action: Following a brief discussion it was Moved by Meckling,seconded by Gray to approve a deferral for a 6-month period,until May 21,2002, subject to the following conditions: 1) Applicant shall comply with all King County permitting requirements;and 2)that a security device in the amount of $9,483.56(150%of the estimated cost),be posted with the city. MOTION CARRIED. 4. OLD BUSINESS: • Variance Extension Re i uest to the Underground Ordinance,Olympic Pipe Line Compan ©�98-ail 3400 S.E.6th St. - Applicant requests an Underground Variance extension for three(3)years for the installation of underground utility lines(electric device)to run treatment equipment for a soil remediation system. Action: Moved by Meckling,seconded by Gray to grant an extension of said variance until November 14,2004. MOTION CARRIED. 4. ADJOURNMENT: Acting Chairman Christensen adjourned the meeting at 8:45 a.m. c:A .r. : CITY JF RENTON Board of Public Works Jesse Tanner)Mayor DEVELOPMENT PLANNING C' -`'OF RENTON November 21, 2001 NOV 2 6 20011 Geol En ineers REGLAVED Attn: Dana Carlisle, P.E. 84101154th Ave. N.E. Redmond WA 98052 SUBJECT: VARIANCE EXTENSION REQUEST TO UNDERGROUND ORDINANCE, OLYMPIC PIPE LINE COMPANY LUA 98-136 Dear Ms. Carlisle: The Board of Public Works met on November 12, 2001 to consider your request for a variance extension of three years to the City of Renton Underground Ordinance, to run treatment equipment for a soil remediation system. The board granted your request until November 14, 2004' You may call Juliana Sitthidet, Board Coordinator, at (425) 430=7278 if you have questions or require additional information. Sincerely, Mickie Flanagan, Retorting Secretary cc: Board Members Juliana Sitthidet LUA_File Documenr4'cur 1.90i 2ooi • 1055 South Grady Way- Renton, Washington 98055 - (425)430-7204/FAX (425) 430-7241 t• This paper contains 50%recycled material,30%post consumer }616 en � • • MP MR- :„ , •••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••• •••••• •••••• • • •••••••••••• •• •• • •••• •••••••• ••••••••••••• • • ••••• •••••• • •• • • • ••• ••••••••••••••••••••••••••••••••••••••••••••••.....• .............................................. ... ....... .. ....... ............................................. ... . • • ....... .. .. . ... ... ... ....... • • • ... • • ........................................................................................................................................................................................................................................................ I, C)u E 2t) i being the Applicant for the Temporary Use Permit at the location of: • • Neel, 3.5D4 S� S� co,»v� a/t, N � eLfep S C9 5 hereby authorize the City of Renton to summarily eliminate the Temporary Use and all evidence of the use if it has not been removed as required by the terms of the permit. I also agree to reimburse the City for any expense incurred in abating this Temporary Use. Signature: Print Name: Date:/ STATE OF WASHINGTON ) ) SS • COUNTY OF KING ) I certify that I know or have satisfactory evidence that i C- 6\1€CI4 signed this instrument and acknowledged it to be his/her/their free and voluntary act for the uses and purposes mentioned in the instrument. • Dated: c( (/)1 �1-+ Notary Public in and for the State f W shington - D� Gc� %D • Notary: (Print) �� C• I ��/ My appointment expires: 4.1..lf• "ZOB 0 TEMPUSE.DCC' • -- REVISED 6/98 „ • 7 • • ;;:•:.:::::::::.;;>::<.;;;:.;:.;:.;>::.;:.:::.;::<.;:.;>::;;::<.>::;:;;;;::::;:::: • ::::::::::.::.::::.:::.::.:.::::.::: ►.::.:: .......:: 1 .::•E ..::.I LET I.. I :::::::::::::::::::::: . .............. ..................................... • STATE OF WASHINGTON ) ) COUNTY OF KING ) P0106rt C)VrCCc'Ck , being first duly,sworn on oath, deposes and says: . 1. On the Zz 0 day of `e"l-t- , 19 1? , I.installed 2- public information sign(s) and plastic flyer box on the property located at De11-4 I SlCA-e- for the following project: DNrnjI? PicfI . Proj t n me Owner-Name 2. I have attached a copy of the neighborhood detail map marked with an "X" to • indicate the location:of the installed sign. 3.. This/these public information sign(s) was/were constructed and installed in locations in conformance with the requirements of Chapter 9 itle 4 of Renton Municipal Code. In-staller Signature . SUBSCRIBED AND SWORN to before me this day of ,J.4Dn11-�Y 4. 1�9 G, ; • I `I�'/JLJ� NOTARY PUBIC in and for il".tate,ofkWWasbington, residing at F-A-fl My commission expires on S1/ I 00O ': • PUBSION2.DOC REV.6/98 PUBSIGN2.DOC\ The system will be operated until soil and ground water cleanup levels are met. The estimated duration of system operation is 1 to 3 years. OPLC proposes to install the system in October 1998. System startup will be in November. Once the cleanup is complete, the system will be decommissioned and the equipment enclosures will be removed. • Vapor and ground water monitoring will be performed throughout the neighborhood to • evaluate the effectiveness of the remediation system and to confirm that the vapor recovery . ,I systems are effectively removing petroleum vapors from the subsurface. R cc„U L S l pore c ►^,. c o ►A-Ve. U PE mo w, 17- C y4,2_ S 6.CK/A.)C7 "4- 7-6 /7osz�xr US /mac.=►-z,. iT �02 t7-/ lw 0 C C u t w. cr )T 1 41(4o S d�'-$ ;A . ' (> 7"1-/RA C,v�'l�si.L(7 �ce.' c . cTvS ,4-'t 4 T/ / l'.�DLC 6> Tc. , erI.i ✓f�.✓ 7-a y .S -ea5 f o TX/cs i> v el-r/u A../ 0 i- Tf-1 Piz° 3C:c-T 4_ C1, . TEMPORARY USE PERMIT EXTENSION City of Renton File Number: LUA-98-136,T Project Name: Olympic Pipeline Remediation Location: 3524 SE 5th St.and Maplewood Park King County Assessor's Property Identification Number: 162-305-912907,163-305-906602 • • Owner Name: City of Renton • Applicant Name: Olympic Pipe Line Company Project description:The Olympic Pipe Line Company(OPLC)proposes to remediate an historic(1985)fuel spill leak in the Maplewood neighborhood. The petroleum in the subsurface resulted from.a block valve fuel leak. The preferred alternative for cleanup of the residual fuel is air sparging and vapor extraction. Air sparging involves controlled injection of air below the water table to treat residual volatile and biodegradable hydrocarbons in groundwater and soil In the water table zone. A vapor extraction system would collect and remove the volatile petroleum vapors generated by sparging. The petroleum vapors would he treated and the vapor exhaust(carbon dioxide and water)would be emitted to the atmosphere through an exhaust stack. Aboveground equipment(blowers,air compressors,vapor treatment unit,electrical panel and controls)would be housed in two 400 square foot fenced enclosures. System Installation and construction took place in October 1998 and the system operation is anticipated for one to three years. The system will be operated until soil and groundwater cleanup levels are met. Original Date of Permit Issuance: October 9,1998 Date of Extension: October 9,1999 • Final Expiration:/Octoberr 9,2000 Appo 4 eo*+�nton Date Dev:•er t Services Division Director ' 'w Conditions of Approval: 1.A new Temporary Use Permit or a Conditional Use Permit(CUP)shall be required if the equipment enclosures are needed beyond the two-year period allowed under this permit. 2. A Construction Permit shall be required for any additional work within the public right-of-way. Appeals: Appeals of permit issuance may be filed with the City of Renton Hearing Examiner by 5:00 PM on August 24, 2000. Phone: (425)430-6515. • CERTIFICATION I, f e_ ,,LA,u) , hereby certify that 3copies of the above document were posted by me in .3 conspicuous places on or nearby • .the described property on . Au��s€ 9 Woo. Signed: Subcribed and sworn before me,a Nortary Public,in and for the 2i' - - ATTEST: of Washington residing hi-Ye n\431m ,on the I tak day of O'u(/ •2.0 6-6 ��YY1 kCd--77/1- • Uri 1 TEMPORARY USE PERMIT 1 i' EXTENSION i City of Renton File Number: LUA-98-136, T s Project Name: Olympic Pipeline Remediation 1 Location: 3524 SE 5th St. and Maplewood Park King County Assessor's Property Identification Number: 1 162-305-912907, 163-305-906602 'Owner Name: City of Renton i Applicant Name: Olympic Pipe Line Company 6 r i Project description: The Olympic Pipe Line Company (OPLC) proposes to C remediate an historic (1985) fuel spill leak in the Maplewood neighborhood. The petroleum in the subsurface resulted from a block valve fuel leak. The preferred alternative for cleanup of the residual fuel is air sparging and vapor extraction. Air i ; sparging involves controlled injection of air below the water table to treat residual it volatile and biodegradable hydrocarbons in groundwater and soil in the water table i; ' zone. A vapor extraction system would collect and remove the volatile petroleum vapors generated by sparging. The petroleum vapors would be treated and the 11 vapor exhaust (carbon dioxide and water) would be emitted to the atmosphere through an exhaust stack. 'ili 1 Aboveground equipment (blowers, air compressors, vapor treatment unit, electrical l panel and controls) would be housed in two 400 square foot fenced enclosures. System installation and construction took place in October 1998 and the system ;j , operation is anticipated for one to three years. The system will be operated until soil 1' and groundwater cleanup levels are met. 11 Original Date of Permit Issuance: October 9, 1998 ; , Date of Extension: October 9, 1999 11 Final Expiration: October 9, 2000 l i Er4k Pt / i Appr e ity o -Benton Date / ` Dev op e t Services Division Director '� Conditions of Approval: 1. A new Temporary Use Permit or a Conditional Use Permit (CUP) shall be required if the equipment enclosures are needed beyond the two-year period allowed under this permit. 2. A Construction Permit shall be required for any additional work within the public right-of-way. Appeals: Appeals of permit issuance may be filed with the City of Renton Hearing Examiner by 5:00 PM on August 24, 2000. Phone: (425) 430-6515. CITY .OF RENTON ♦ `=. BOARD OF PUBLIC WORKS Jesse Tanner,Mayor. . November 18, 1998. Dana Carlisle,P.E. c/o GEO ENGINEERS 8410-154th Ave.NE Reidmond WA 98052... •SUBJECT: VARIANCE REQUEST TO UNDERGROUND ORDINANCE OLYMPIC PIPE LINE COMPANY - 3400 SE 6THST. Dear Ms.Carlisle: At today's Board of Public Wor6 meeting your.request for a variance to the Underground • Ordinance to run treatment equipment;fora;soil remediation system, was approved:for 1 .to 3 years. If you have any questions.Or.'eoncorns;`.please .call Paul Lumbert, Board Coordinator, at (425)430-7304. ' t rt Si erely, , . ickie Flana an M g • Recording Secretary cc Sandy Conlan,Olympic Pipe Line Co. Paul Lumbert,City of Renton " ( LUA•Eike 98-13_9 f 1055 South Grady Way-Renton,Washington 98055 (425)235-2569 H\DIVISION.S\BPW\CORRESPO\98-003.DOC Facsimile (425)235-2541 BOARD OF PUBLIC WORKS 8:30 a.m. Renton Municipal Building Wednesday,November 18, 1998 6th Floor Conference Room IN ATTENDANCE: Jim Hanson,Chairman Larry Meckling,Building Official Dave Christensen,Utilities System Chuck Duffy,Fire Prevention Paul Lumbert,Plan Review Mickie Flanagan,Recording Secretary VISITORS: Bruce Dodds,Dodds Engineering,The Bluffs Joseph Strober,Legacy Partners,The Bluffs Janet L. Stimach, Stimach Short Plat Deferral Dana Carlisle,P.E.,Olympic Pine Line MINUTES 1. I CALL TO ORDER: Chairman Hanson called the meeting to order at 8:30 a.m. 2. APPROVAL OF MINUTES: Moved by Meckling,seconded by Gerber,to approve meeting minutes dated,November 4, 1998.MOTION CARRIED 3. REQUESTED ACTION: • OFF-SITE DEFERRAL, Stimach Short Plat,LUA98-124,NE 13th Street and Harrington Ave NE - the applicant requests a deferral for off- site improvements which include but are not limited to curb, gutters, sidewalks,paving, driveways, and street lights. Action: Moved by Christensen,seconded by Meckling,to approve the off-site deferral subject to the following condition: 1)that a Restrictive Covenant be placed on the property agreeing to participate in any future City project or L.I.D.,that would be formed to install the deferred Code required items in the neighborhood adjacent to the Stimach Short Plat. MOTION CARRIED. • VARIANCE, Olympic Pipe Line Company,:ILUA;987136; 3400 SE 6th Street - applicant requests an Underground Variance to the nderground Ordinance for the installation of underground utility lines (electric service) to run treatment equipment for a soil remediation system. Action: Moved by Meckling,seconded by Duffy,to approve request for a variance to the Underground Ordinance to Olympic Pipe Line Company to run treatment equipment for a soil remediation system for 1 to 3 years. MOTION CARRIED. ,: , CIT"x OF. RENTON Planning/Building/Public Works Department 1 ~' • Greggimmerman P.E. Administrator Jesse Tanner,Mayor gg ' . • November 16, 1998 Ms. Dana Carlisle ' GeoEngineers, Inc. 8410- 154th Avenue NE Redmond, WA 98052 SUBJECT:• Olympic Pipeline Remediation Project No. LUA-98-136, T Dear Ms.Carlisle: The Temporary Use Permit approved on October 9 included a condition of approval requiring a building permit for fencing around the equipment. enclosures. A construction permit issued for the project included review and approval Of the fencing. Therefore, a separate building permit is unnecessary and the condition of approval need no longer apply. - ' If you have any questions,please contact me at(425)430-7219. Sincerely, • eter Rosen Project Manager cc: Olympic Pipe Line Company • • • 200.Mill Avenue South- Renton,Washington 98055 3873 T '° ,CITY OF. :RENTON _- '" •. �. ':.i :._�RENTON BRANCH. 2US BANK'OF WASHING` `:O' N';:: 1911050 21 DATE ` 10 09 98 AMOUNT PAY ':;$1,43 D 0 . OLLARS 'AND."ZERO„CENTS• '; / / TO THE ORDER OF E. Ni 'E. GI`� ' ��INC�NE " '� 8410,,.;154TH AVE �NE G 0 ..Sic,_<„,..„_, .':,' RE MOND :.WA .:98052 A ........:: . g:;:� 3t( , ._i..i .2 50:00�LO 5I. .0 2 'i 7:� 0 5:58.y : _ai■. • _ T ::» <CH. GC>ANIOUNl': «'<:-> > N ii E R'N'.N . 3VEIVDOFi'tfAME' :> <':;`:<z>?:>.r>»`'''s;:':'.'> 029436 I ' GEO ENGINEERS INC 110/09/98 I 1,430.00 0163873 I0131.81: .:. ,..;:.;:::.•;.;'. ; :;:. ::: '. :;:.> ;::-:.;.;.;.;.:.; 4 30.-00 Review Re f un 1,000.00 ' t CITY OF RENTON ® 200 MILL AVE S. ® RENTON, WASHINGTON 98055 ■ PHONE(206) 235-2617 a FAX(206) 235-2513 oa3iiis2i93 f City of Renton Finance Department Request for Claims or Treasurer's Check Date of Request q-29-1 Date Required ac) Requesting Department ,pY ckr/7/CF-4 Authorized Signature a • I REASON FOR CHECK Deposit Refund Name 669C' ''/4ce/ Amount /1 Odd, Finance Receipt No , c CQ0 , Receipt Date G/-/ - �8 Other Describe Circumstances Requiring Issuance of Check: Pipe It;Are, f4:561. ( :�t (.2l( pr`/ e CHECK PREPARATION INSTRUCTIONS Amount $ 600), 0(2 Charge to Account(s) 60). 34 5. g! , io Payable To leo 6i ^/ c • Address pito - f 5L`'" t4 4 fitedin13wi q „ 0 Mail Check to Payee ft(Return to Dept: f H r Soc Sec or IRS ID No 0 Other: CHECK AUTHORIZATION - Finance Department Use Only Approved Date Claims Treasurer's Check No: CTY006/7/89 Geoff Engineers • FILE NO. 00693-045-00 INVOICE NO. 013181 DATE 09/21/98 City of Rel.nton , `' ,; Renton Municipal Building 1 ` '!F ?':t Jg l'^'-' 200 Mill Avenue South � � ' . 't� • Renton, WA 98039 '°'i 1, r SEP 2 `' i998 e CITY rr Attention: David Christensen Cnai • •e Cr(ng pept. Geotechnical Construction Services Slope Stabilization & Sewer Line Recstr. Rainier Avenue North & NW 7th Street Renton, Washington • SERVICES RENDERED THROUGH 09/11/98 THIS CHARGES BUDGET PERCENT TASK INVOICE BUDGET TO DATE REMAINING COMPLETE 0300 Construction Monitoring Services 430.00 5,000.00 762.50 4,237.50 15.25 TOTAL INVOICE $ 430.00 TOTAL AMOUNT DUE $ 430.00 Net due lupon receipt. 1-1/2% service charge per month will be charged if payment is not received within 30 days. CONCURRENCE Project Manager: McFadden, Jerome J. DATE 61. nigS NAME INITIAL/D • e�WA? Ge,oEngineers, Inc. 8410 154th Avenue N.E. Redmond, WA 98052 Telephone (425) 861-6000 li sz,�'. :;m; C^ �er•'�^t; ;rrn.vx,�! '•a.risna^.r11'�.�;n»?r':;a"•'' _ - - xss;;- `_:i,�^"?;z�c:;.;4: .A. ce •v�', s<tkr. �-,��>3�^:x.• �•'^ - .#. �°' `:.gi'i.�' r? •$ C: .d'� "Gr _s!}:'=': :.r+,=s-•:'.�-'iP�p.a-,='<`«' .;,r ;�.� .�;°`.$:ri'r=?X,k3. F>^. 1' �h t .'+k.�:V L nf .u„ �^+ �i�.:' .34q-�±fi;. �,e?.'r#,':,3-'��:X:�.§� -n"c:`��Si Sa,::r.,: ,,;..�i"�r,x:•v.•.a r_,-.' "r,,a� :i14Y„';4/'1«re'',G3�.P` SM'+M,.ee ,..Co-` '� •';..vs:t. 5'-,d� •'.''' t"§'- ;'N'•3�k-•Y:;v' ?sU'_"a¢ ,S`n^�, t`t�;r':.s'�i;-:::"•. �;..e':'• .ba.�-,c : ,.tn;o.".t. �,.J +�. '�'59��. i� i ,;s.. y,,�'" �� kale w�a -,�w*-'„.3 ...-..x- ..n _ �.�+{"=•:t:.c.. it;7, f.h w,� ,,,1 -1, .Y .J� t'y'rf A. .tvrv'b '..,. 3>' •.�:- l'4•t`�:~'r:�^:'t-:::.r.. Ff�('^ ;'.i.., .2' .•A1Yn !" �. �:.n �U'�• V .>#✓="s1':.>>.fin. nY.,,.S"t'.� _ _-S•...,-..... . �:'F.'• '�r.F < tr ..rn�"F�`a , tJ., '1 ..'�i',r.. - T"t '� :.«�' !`�',Y..• ..1. +-2' �_ ,.. _;b. :. ,.yt..e;,.l.. .,u i.."�'......_v._.._,., .. - 1r,r 2rr { �, � �a�:4 `,` vx ^-.?a;a�=4'e.C�y:i•T:i.rA�nNr'xi_ Viy $=':< �v wa.. 1�.+v�9iiFStl.i$ .+ •' CITY OF RENTON PLANNINGBUILDING/PUBLIC WORKS MEMORANDUM DATE: October 9, 1998 TO: Neil Watts • FROM: Carolyn Boatsman SUBJECT: Olympic Pipeline Company Petroleum Spill Cleanup We have completed our check of the plans for water utility issues. We have two concerns,one of them very urgent if GeoEngineers is planning,as we understand,to start drilling air supply and vacuum wells on Monday,October 12, 1998. 1. Sheet 3 of 9 indicates that wells are either very close or on the 16 inch water main in SE 6 ST. This water main must be located prior to drilling. It should be, further,uncovered by hand wherie expected to be closer than 4 feet from drill sites. Drilling on Monday,October 12, 1998 should be delayed if the water main has not been located. This should be communicated to GeoEngineers today. Water Utility requires a cross section showing the approximate location of the water main,air supply wells,and vacuum extraction wells with construction notes conforming to this memo. 2. GeoEngineers should include a construction note that when they are installing pipe or drilling within 4 feet of the 16 inch ductile iron water main in SE 6 ST they will uncover the water main by hand. Thanks.'' cc. Peter Rosen t.rneta Henninger JID. Wilson OPLC/nw10198xx.doc .T,. , : 'CITY OF RENTON ..LL =,... Planning/Building/Public Works Department Jesse Tanner,Mayor Gregg Zimmerman P.E.;Administrator • October 9 r , 998 1 • Ms. Dana Carlisle GeoEngineers, Inc. 8410- 154th Avenue NE Redmond, WA 98052 SUBJECT: Olympic Pipeline Remediation Project No. LUA-98-136,T Dear Ms..Carlisle: Your application fora Temporary"Use Permit for the above referenced project is approved. Please post the enclosed Temporary Use Permit at your job site...Please note the conditions of approval on the second page of the Temporary Use Permit. You will need to request an extension of the permit before the one-year expiration. • ' There is 10 day appeal period for the Temporary Use Permit which will end on October19. Building or construction permits may be issued during the appeal period,though at the risk of the applicant. • If you have any questions, please call me at'(425)430-7219. • Sincerely, • eter Rosen Project Manager • cc: Olympic Pipe•Line Company • • ACPTLTR2.DOC 200 Mill Avenue South- Renton,Washington 98055 - ` t r! TEMPORARY USE PERMIT City of Renton File Number: LUA-98-136, T Project Name: Olympic•Pipeline Remediation Location: 3524 SE 5th St. and Maplewood Park King County Assessor's Property Identification Number: 162-305-912907, 163-305-906602 Owner Name: City of Renton Applicant Name: Olympic Pipe Line Company Project description: The Olympic Pipe Line Company (OPLC) proposes to remediate an historic (1985) fuel spill leak in the Maplewood neighborhood. The petroleum in the subsurface resulted from a block valve fuel leak. The preferred alternative for cleanup of the residual fuel is air sparging and vapor extraction. Air sparging involves controlled injection of air below the water table to treat residual volatile and biodegradable hydrocarbons in groundwater and soil in the water table zone. A vapor extraction system would collect and remove the volatile petroleum vapors generated by sparging. The petroleum vapors would be treated and the vapor exhaust (carbon dioxide and water) would be emitted to the atmosphere through an exhaust stack. �- Aboveground equipment (blowers, air compressors, vapor treatment unit, electrical panel and controls)would be housed in two 400 square foot fenced enclosures. System installation and construction is expected in October 1998 and the system operation is anticipated for one to three years. The system would be operated until soil and groundwater cleanup levels are met. Date of Permit Issuance: October 9, 1998 Date of Expiration: October 9, 1999 l Ap ed y f enton Date Develop ent Services Division Director �a.e„�`k6'�5,-:. �` s '€ �' •„. :. "* .".... •....r¢. ..... .-.. .. . ''.,�' t2, u _ '"s i.a° iM,°i;:".. +'s-i"'«-�vi, � ....,.: ,;� •"� I Conditions of Approval: 1. Temporary Use Permits are valid for a one year period and a one year extension may be granted. A Conditional Use Permit (CUP) shall be required if the equipment enclosures are needed beyond the two year period allowed under a Temporary Use Permit. 2. A Building Permit shall be required for the fencing around the equipment • • enclosures. 3. A Construction Permit shall be required for work within the public right-of- way. Appeals: Appeals of permit issuance may be filed with the City of Renton Hearing Examiner by 5:00 PM on October 19, 1998. Phone: (425)430-7201. V *************•************************************************** City of Renton WA Reprinted: 09/29/98 09 : 13 Receipt **************************************************************** Receipt Number: R9805847 Amount: 75 . 00 09/29/98 09 : 12 Payment Method: CHECK Notation: #82801 GEOENGINE Init: LN Project #: LUA98-136 Type: LUA Land Use Actions Parcel No: 162305-9066 Site Address : 3330 SE 6TH ST Total Fees : 1, 115 . 04 This Payment 75 . 00 Total ALL Pmts : 1, 115 . 04 Balance: . 00 **************************************************************** Account Code Description Amount 000 . 345 . 81. 00 . 0018 Special Permit Fees 75 . 00 **************************************************************** City of Renton WA Reprinted: 09/29/98 09 : 13 Receipt **************************************************************** Receipt Number: R9805848 Amount: 25 . 00 09/29/98 09 : 13 Payment Method: CHECK Notation: #82801 GEOENGINE Init: LN Project # : LUA98-136 Type: LUA Land Use Actions Parcel , No: 162305-9066 Site Address : 3330 SE 6TH ST Total Fees : 1, 115 . 04 This Payment 25 . 00 Total ALL Pmts : 1, 115 . 04 Balance: . 00 **************************************************************** Account Code Description Amount 000 . 345 . 81. 00 . 0018 Special Permit Fees 25 . 00 a © CITY OF RENTON • GP.�`�.E ��TT F : - _._ Planning/Building/Public Works = co PM ;;; i'm: * << ,r ', * 1055 South Grady Way - Renton Washington 98055 Lu cc c /9g8 i{a TE•' ' ADDRESS SERVICE REQUESTED or 16 • 9•8 F ` g$, 3 .(� 1'Us. AU i \.,' --\)\N--: ij° n V 512690 0255 Jill V Bateman - i 3536 SE 5th St Renton WA 98058 ___ ________ _ _------------- 1 1 BATE538 980583023 1797 23 09/30/98 _ _ FORWARD TIME EXP RTN TO SEND BATEMAN ei =:L°ce} :,niC a_- 3 '��6 — 590 BURGER PL ..�_.a ENUMCLAW WA 95O2�2-8434 WS Etl.WHESSLO i ,aa Ljt) (v co 1i!' i.r TO FORWARD a m r W 112ETURN R d WdPi {{,{,s{,t{s{{,,,,{ila,I,I,a�I{, .. CITA. -JF RENTON Planning/Building/Public Works Department ' Jesse Tanner,Mayor Gregg Zimmerman P.E.,Administrator September 25, 1998 Ms. Dana Carlisle GeoEngineers, Inc. 8410- 154th Avenue NE Redmond, WA 98052 - SUBJECT: Olympic Pipeline Remediation Project No. LUA-98-136, T . Dear Ms. Carlisle: . • The subject application was initially considered to require SEPA environmental review and public notice was sent out for a proposed'Determination of Non-Significance (DNS). After evaluation of the application it appears that the:excavation associated with`the proposal would be less than 500 cubic yards, below the SEPA threshold level.=- None of the other r elements of the project considered separately or together would trigger SEPA environmental review. Therefore, the proposal is categorically exempt from SEPA requirements. A.Temporary Use',.Permit is`required':for.installation if the aboveground `equipment .enclosures. - Temporary Use Permits are valid for a oneyear period and a one year extension may be granted. A Conditional Use Permit (CUP) shall be required if the equipment enclosures are needed beyond the two year period allowed under a Temporary Use Permit. Your submitted application materials meet our requirements for Temporary Use Permit. We will send out public notice today, September 25._-There is a 2 week public comment period and permits cannot be issued until the end of the comment period, October 9. When a Temporary Use permit is issued, there is 10 day appeal period. Building or construction perm its may be issued during the appeal period, though ` at the risk of the applicant. Your S entire permit fee for Environmental. Review. ($1,000) will be refunded to you. This will take approximately 3 to 4 weeks. The permit fee for a Temporary Use Permit is $100.00 and there is a $25.00 refundable fee for the sign deposit. Please remit the permit fees for a Temporary Use.Permit as soon as possible. ; Thank you for your cooperation. If you have any questions, please contact me at (425)430-7219. Sincerely, • Peter Rosen Project Manager cc: Olympic Pipe.Line Company . ACPTLTR2.DOC - ' 200 Mill Avenue South - Renton,Washington 98055 . 1 � CITY OF RENTON Planning / Building / Public Works MEMORANDUM DATE: September 24, 1998 TO: Gregg Zimmerman FROM: Peter Rosen SUBJECT: Olympic Pipeline Remediation As you know, the Olympic Pipe Line Company is proposing to remediate an historic fuel spill leak in the Maplewood neighborhood. The preferred alternative for cleanup of the residual fuel is air sparging and vapor extraction. Initial discussions indicated that excavation for the trenching of underground pipes would exceed 500 cubic yards, thereby triggering a requirement for SEPA environmental review. However, with evaluation of the formal application it appears that the excavation would be less than 500 cubic yards and below the SEPA threshold. None of the other elements of the project considered separately or together would trigger SEPA environmental review. Therefore, the proposal is categorically exempt. The proposal would consist of the following project elements: • 15 vertical extraction wells • One underground horizontal vapor collection trench • 20 vertical air sparging wells and associated underground piping. • Vapor treatment unit for treating petroleum vapors • Trio 400 square foot fenced aboveground equipment enclosures for housing blowers, air compressors, vapor treatment unit, electrical panel and conch ls. The aboveground equipment enclosures are considered structures that are not permitted uses in the R-8 zone.1 Staff proposes requiring a Temporary Use Permit to allow for the equipment enclosures. The Temporary Use Permit includes public notification, posting of the site, and a 2 week appeal period. A Temporary Use Permit is valid for a maximum of two years. After a two year period,the applicant will be required to apply for a Hearing Examiner Conditional Use Permit for continuing the use of the equipment enclosures. If you have any questions or concerns please call me. City a _inton Department of Planning/Building/Pa!,__'Vorks ENVIRONMENTAL 8 DEVELOPMENT APPLICATION REVIEW SHEET REVIEWING DEPARTMENT:tteormA„ QGNtetbpn COMMENTS DUE: SEPTEMBER 17, 1998 . APPLICATION NO: LUA-98-136,ECF DATE CIRCULATED: SEPTEMBER 03, 1998 APPLICANT: Olympic Pipeline PROJECT MANAGER: Peter Rosen PROJECT TITLE: Olympic Pipeline Remediation WORK ORDER NO: 78430 LOCATION: ,3524 SE 5th Street and Maplewood Park, 3400 SE 6th Street SITE AREA: 1 acre NEW BUILDING AREA(gross): 800 sq.ft. -equipment enclosures SUMMARY OF PROPOSAL: Proposal to remediate an historic(1985-1986)fuel spill leak by Olympic Pipe Line Company in the Maplewood neighborhood. The preferred alternative for cleanup of the residual fuel is air sparging with vapor extraction. The system would be operated until soil and groundwater cleanup levels are met. The estimated duration of system operation is one to three years. A. ENVIRONMENTAL IMPACT(e.g.Non-Code) COMMENTS Element of the Probable Probable More Element of the Probable Probable More Environment Minor Major Information Environment Minor Major Information Impacts Impacts Necessary Impacts Impacts Necessary Earth Housing Air Aesthetics Water I Llght/Gla►e Plants Recreation Land/Shoreline Use Utilities Animals ' Transportation Environmental Health Public Services Energy/ Historic/Cultural Natural Resources Preservation Airport Environment 10,000 Feet 14,000 Feet B. POLICY-RELATED COMMENTS C. CODE-RELATED COMMENTS We have reviewe t6•s a lic�ation with particular attention to those areas in which we have expertise and have identified areas of probable impact or areas nal adrtral information is neeeaerdf o arty assess this proposal. Signature of Direc or Authoriz presentative Date DEVAPP.DOC Rev.10/93 . 1 City of Renton Department of Planning/Building/Public Works ENVIRONMENTAL & DEVELOPMENT APPLICATION REVIEW SHEET REVIEWING,DEPARTMENT: pia" RPVIew--l.e}a r COMMENTS DUE: SEPTEMBER 17, 1998 APPLICATION NO: LUA-98-136,ECF DATE CIRCULATED: SEPTEMBER 03, 1998 APPLICANT:, Olympic Pipeline PROJECT MANAGER: Peter Rosen PROJECT TITLE: Olympic Pipeline Remediation WORK ORDER NO: 78430 ).).. LOCATION: I3524 SE 5th Street and Maplewood Park, 3400 SE 6th Street t.S> r1 SITE AREA: 11 acre I NEW BUILDING AREA(gr s): 800 s?t.f -etajpl pnt l enclosures `I, 5 SUMMARY OF PROPOSAL: Proposal to remediate an historic(1985-1986)fuel spill leak by O1i r'c Pi Line Company in the Maplewood neighborhood. The preferred alternative for cleanup of the residual fuel is ai .,.rging with vapor extraction. The system would be operated until soil and groundwater cleanup levels are met. Th- -,mated duration of system operation is one to three years. A. ENVIRONMENTAL IMPACT(e.g.Non-Code) COMMENTS Element of the 1 Probable Probable More Element of the. Probable Probable More Environment I Minor Major Information Environment Minor Major Information Impacts Impacts Necessary Impacts Impacts Necessary Earth I Housing Air Aesthetics 1/ • Water I Light/Glare Plants 1 Recreation l--- -- Land/Shoreline Use Utilities Animals Transportation Environmental Health Public Services Energy/ I Historic/Cultural Natural Resources Preservation , Airport Environment 10,000 Feet 14,000 Feet II . B. POLICY-RELATED COMMENTS. C. CODE-RELATED COMMENTS I We have reviewed this application with particular attention to those areas in which we have expertise and have identified areas of probable impact or areas where additi al information is needed to pr My assess this proposal. („ Signature of Director or uthorized Representative Date DEVAPP.DOC 1 Rev.10/93 City of Renton Department of Planning/Building/Public Works ENVIRONMENTAL & DEVELOPMENT APPLICATION REVIEW SHEET REVIEWING1DEPARTMENT: Pire j -ham COMMENTS DUE: SEPTEMBER 17, 1998 APPLICATION NO: LUA-98-136,ECF DATE CIRCULATED: SEPTEMBMeaTON FIRE DEPT FIRE PHEVtN I Iul,1 BUREAU APPLICANT:;Olympic Pipeline PROJECT MANAGER: Peter Rosen PROJECT TITLE: Olympic Pipeline Remediation WORK ORDER NO: 78430 SEP 0 3 1998 LOCATION: 3524 SE 5th Street and Maplewood Park, 3400 SE 6th Street E V �-�, Pam' SITE AREA: ,1 acre NEW BUILDING AREA(gross): 800 sq.ft. -equipment enclosures • SUMMARY OF PROPOSAL: Proposal to remediate an historic(1985-1986) fuel spill leak by Olympic Pipe Line Company in the Maplewood neighborhood. The preferred alternative for cleanup of the residual fuel is air sparging with vapor extraction. The system would be operated until soil and groundwater cleanup levels are met. The estimated duration of system operation is one to three years. • A. ENVIRONMENTAL IMPACT(e.g.Non-Code) COMMENTS Element of the Probable Probable More Element of the Probable Probable More Environment Minor Major Information Environment Minor Major Information, Impacts Impacts Necessary impacts Impacts Necessary Earth Housing Air Aesthetics Water Light/Glare Plants i Recreation Land/Shoreline Use Utilities Animals Transportation Environmental Health Public Services Energy/ I Historic/Cultural Natural Resources Preservation Airport Environment 10,000 Feet 14,000 Feet 40 /14,4-0,- 1 lac s B. POLICY-RELATED COMMENTS rr 11 iv C. CODE-RELATED COMMENTS fil on/41-1,11 '510 /4 0. 4 g a We have reviewed this application with particular attention to those areas in which we have expertise and have identified areas of probable impact or areas where additional inf rmation Is needed to prope ssess this proposal. , 0/,9 Signature 'f D'ector or Authorized ept-esentative Date DEVAPP. Rev.10/93 City.„..enton Department of Planning/Building/Public Works ENVIRONMENTAL & DEVELOPMENT APPLICATION REVIEW SHEET REVIEWING(DEPARTMENT: T V lc-b COMMENTS DUE: SEPTEMBER 17, 1998 APPLICATION NO: LUA-98-136,ECF DATE CIRCULATED: SEPTEMBER 03, 1998 APPLICANT:I Olympic Pipeline PROJECT MANAGER: Peter Rosen PROJECT TITLE: Olympic Pipeline Remediation WORK ORDER NO: 78430 LOCATION: 3524 SE 5th Street and Maplewood Park,3400 SE 6th Street SITE AREA: 1 acre NEW BUILDING AREA(gross): 800 sq.ft. -equipment enclosures SUMMARY OF PROPOSAL: Proposal to remediate an historic(1985-1986) fuel spill leak by Olympic Pipe Line Company in the Maplewood neighborhood. The preferred alternative for cleanup of the residual fuel is air sparging with vapor extraction. The system would be operated until soil and groundwater cleanup levels are met. The estimated duration of system operation is one to three years. • A. ENVIRONMENTAL IMPACT(e.g.Non-Code) COMMENTS Element of the I Probable Probable More Element of the Probable Probable More Environment Minor Major Information Environment Minor Major Information Impacts Impacts Necessary Impacts Impacts Necessary Earth I Housing Air Aesthetics Water Ught/Glam Plants Recreation Land/Shoreline Use Utilities Animals I Transportation Environmental Health Public Services Eby/ I Historic/Cultural Natural Resources Preservation Airport Environment 10,000 Feet 14,000 Feet ics(2) 4_, a%i I B. POLICY-RELATED COMMENTS >112 "Lg C. CODE-RELATED COMMENTS act We have reviewed this application with particular attention to those areas in which we have expertise and have identified areas of probable impact or areas where dditional information is ed to properly assess this proposal. AO( �/ d i gnature of for or Authorized Representative Date DEVAPP.DOC I Rev.10/93 II City of rtenton Department of Planning/Building/Public Works ENVIRONMENTAL & DEVELOPMENT APPLICATION REVIEW SHEET REVIEWING DEPARTMENT: CDAsk t c Se micea COMMENTS DUE: SEPTEMBER 1T,n1998 0RENTON APPLICATION NO: LUA-98-136,ECF DATE CIRCULATED: SEPTEMBER 03, 1998P1=f'l;ni�� • APPLICANT:I Olympic Pipeline PROJECT MANAGER: Peter Rosen 9c'p ®3 1998 PROJECT TITLE: Olympic Pipeline Remediation WORK ORDER NO: 78430 LOCATION: 3524 SE 5th Street and Maplewood Park, 3400 SE 6th Street Si SITE AREA 11 acre NEW BUILDING AREA(gross): 800 sq.ft. -equipment enclosures SUMMARY OF PROPOSAL: Proposal to remediate an historic(1985-1986) fuel spill leak by Olympic Pipe Line Company in the Maplewood neighborhood. The preferred alternative for cleanup of the residual fuel is air sparging with vapor extraction. The system would be operated until soil and groundwater cleanup levels are met. The estimated duration of system operation is one to three years. A. ENVIRONMENTAL IMPACT(e.g.Non-Code) COMMENTS Element of the Probable Probable More Element of the Probable Probable More Environment Minor Major information Environment Minor Major Information Impacts impacts Necessary Impacts Impacts Necessary Earth Housing Air I _ Aesthetics Water Light/Glare Plants Recreation Land/Shoreline Use Utilities Animals Transportation Environmental Health Public Services Energy/ Historic/Cultural Natural Resources Preservation Airport Environment 10,000 Feet 14,000 Feet B. POLICY-RELATED COMMENTS /1/NVL C. CODE-RELATED COMMENTS We have re ' wed this application with particular attention to those areas in which we have expertise and have identified areas of probable impact or areas where ad ' al information is needed to pro fly assess this proposal. g/eW 7 gnature of Direct r Autho izect-Representative Date DEVAPP.DOC (/ Rev.10/93 City or'canton Department of Planning/Building/Public Works ENVIRONMENTAL & DEVELOPMENT APPLICATION REVIEW SHEET REVIEWING'[DEPARTMENT:7 ovi-arholl COMMENTS DUE: SEPTEMBER 17, 1998 APPLICATION NO: LUA-98-136,ECF DATE CIRCULATED: SEPTEMBER 03, 1998 APPLICANT:I Olympic Pipeline PROJECT MANAGER: Peter Rosen CITY OF RENTON PROJECT TITLE: Olympic Pipeline Remediation WORK ORDER NO: 78430 LOCATION: 3524 SE 5th Street and Maplewood Park,3400 SE 6th Street 3 1898 SITE AREAacre NEW BUILDING AREA(gross): 800L, L11pviin 6icj 1N:y enclosures SUMMARY OF PROPOSAL: Proposal to remediate an historic(1985-1986)fuel spill leak by Olympic..Pipeline,Company in the Maplewood neighborhood. The preferred alternative for cleanup of the residual fuel is air sparging with vapor extraction. The system would be operated until soil and groundwater cleanup levels are met. The estimated duration of system operation is one to three years. A. ENVIRONMENTAL IMPACT(e.g.Non-Code) COMMENTS Element of the Probable Probable More Element of the Probable Probable More Environment I Minor Major Information Environment Minor Major Information Impacts Impacts Necessary Impacts impacts Necessary Earth Housing Air Aesthetics Water Light/Glare Plants Recreation Land/Shoreline Use Utilities Animals I Transportation Environmental Health Public Services Energy/ Historic/Cultural Natural Resources Preservation Airport Environment 10,000 Feet 14,000 Feet B. POLICY-RELATED COMMENTS C. CODE-RELATED COMMENTS 1No C01,11&He We have reviewed this application with particular attention to those areas in which we have expertise and have identified areas of probable impact or areas where additional informationor// Is needed to properly assess this proposal. �/ - Gl/1& 1/3 4? Signature of Director or Authorized Representative Date DEVAPP.DOC Rev.10/93 City or Kenton Department of Planning/Building/Public Works ENVIRONMENTAL & DEVELOPMENT APPLICATION REVIEW SHEET REVIEWING,DEPARTMENT:Gu��l tew ter-- COMMENTS DUE: SEPTEMBER 17, 1998 APPLICATION NO: LUA-98-136,ECF`'' �� DATE CIRCULATED: SEPTEMBER f ,1,9g8 `-ttTOFRENrFP' APPLICANT:I Olympic Pipeline_ PROJECT MANAGER: Peter Rosen RECFnrr-r. PROJECT TITLE: Olympic Pipeline Remediation WORK ORDER NO: 78430 'S'EP 0 3 1098 LOCATION: 13524 SE 5th Street and Maplewood Park, 3400 SE 6th Street BUIEL-oLoe W SITE AREA: 1acre NEW BUILDING AREA(gross): 800 sq.ht. -'et{tt1*Pent-il V enclosures SUMMARY OF PROPOSAL: Proposal to remediate an historic(1985-1986) fuel spill leak by Olympic Pipe Line Company in the Maplewood neighborhood. The preferred alternative for cleanup of the residual fuel is air sparging with vapor extraction. The system would be operated until soil and groundwater cleanup levels are met. The estimated duration of system operation is one to three years. I • A. ENVIRONMENTAL IMPACT(e.g.Non-Code) COMMENTS Element of the Probable Probable More Element of the Probable Probable More Environment Minor Major Information Environment Minor Major information impacts Impacts Necessary Impacts impacts Necessary Earth I Housing Air Aesthetics Water Light/Glare Plants Recreation Land/Shoreline Use Utilities Animals. I Transportation Environmental Health Public Services Energy/ Historic/Cultural Natural Resources Preservation Airport Environment 10,000 Feet 14,000 Feet • I B. POLICY-RELATED COMMENTS C. CODE-RELATED COMMENTS N4 cv*Iggj We have reviewed this application with particular attention to those areas in which we have expertise and have identified areas of probable impact or areas where additional information is needed to properly assess this proposal. Signature of Director or Authorized Representative Date DEVAPP.DOC Rev.10/93 City of Renton Department of Planning/Building/Public Works ENVIRONMENTAL 8 EVELOPMENT APPLICATION REVIEW SHEET REVIEWING DEPARTMENT: lG2 COMMENTS DUE: SEPTEMBER 17, 1998 APPLICATION NO: LUA-98-13 ,ECF DATE CIRCULATED:. SEPTEMBER 03, 1998 APPLICANT:!Olympic Pipeline PROJECT MANAGER: Peter Rosen PROJECT TITLE: Olympic Pipeline Remediation WORK ORDER NO: 78430 LOCATION: 3524 SE 5th Street and Maplewood Park, 3400 SE 6th Street SITE AREA: 1 acre NEW BUILDING AREA(gross): 800 sq.ft. -equipment enclosures SUMMARY OF PROPOSAL: Proposal to remediate an historic(1985-1986) fuel spill leak by Olympic Pipe.Line Company in the Maplewood neighborhood. The preferred alternative for cleanup of the residual fuel is air sparging with vapor extraction. The system would be operated until soil and groundwater cleanup levels are met. The estimated duration of system operation is one to three years. A. ENVIRONMENTAL IMPACT(e.g.Non-Code) COMMENTS Element of the i Probable Probable More Element of the Probable Probable More Environment Minor Major .Information Environment Minor Major Information Impacts Impacts Necessary impacts Impacts Necessary Earth Housing Air Aesthetics Water i Light/Glam Plants Recreation Land/Shoreline Use Utilities Animals __ Transportation Environmental Health Public Services Energy/ Historic/Cultural Natural Resources Preservation Airport Environment 10,000 Feet 14,000 Feet Wie ru/rz G B. POLICY-RELATED COMMENTS C. CODE-RELATED COMMENTS We have reviewed this application with particular attention to those areas in which we have expertise and have identified areas of probable impact or areas where a additional information Is needed to properly assess this proposal. • Signature of Direc or or Audio• ed Representative Date DEVAPP.DOC Rev.10/93 • • til))�♦ ♦ • NOTICE OF APPLICATION • A Master Application has been filed and accepted with the Development Services Division of the City of Renton. • Tho following briefly describes the application and the necessary Public Approvals. PROJECT NUMBERNAME: LUA-98-136,T PROJECT DESCRIPTION: The Olympic Pipe IJne Company(OPLC)proposes to remedlate an historic(1985)fuel spill leak In the Maplewood neighborhood.The petroleum in the subsurface resulted from a block valve fuel leak. The preferred alternative for cleanup of the residual fuel Is air seaming and vapor extraction. Air sponging Involves controlled injection of air below the water table to treat residual volatile and biodegradable hydrocarbons in groundwater and soil In the water table zone.A vapor extraction system would collect and remove the volatile petroleum vapors generated by sparging• The petroleum vapors would be treated and the vapor exhaust(carbon dioxide and water)would be emitted to the atmosphere through an exhaust stack. Aboveground equipment(blowers,air compressors,vapor treatment unit,electrical panel and controls)would be housed In two 400 square fool fenced enclosures. System installation and construction is expected in October 1998 and the system operation is antiGpaled for one to three years.The system would be operated until soil and groundwater cleanup levels am met. The application was initially considered to require SEPA environmental review and public notice was sent out for a proposed Determination of Non-Significance(DNS). Upon further evaluation of the proposal,it has been delernined•Ihet Is categorically exempt from SEPA thresholds and therefore the proposal does not require environmental review. A Temporary Use Permit is required for installation of the aboveground equipment • enclosures.Temporary Use Permits are valid fore one year period and a ono year extension may be granted. A Conditional Use Permit(CUP)shall be required if the equipment enclosures are needed beyond the two year period allowed under a Temporary Use Permit. PROJECT LOCATION: 3524 SE 5111 Street and Maplewood Park,3400 SE 61h Street PUBLIC APPROVALS: Temporary Permit(T),Building Permit,Construction Permit Notice of Construction from the Puget Sound Air Pollution Control Agency Comments on the above application must be submitted in writing to Mr.Peter Rosen,Project Manager,Development Services Division,1055 South Grady Way,Renton,WA 98055,by 5:00 PM on October 9,1998. If you have questions about this proposal,or wish to be made a party of record end receive additional notification by mall,contact Peter Rosen al(425)430-7219. Anyone who submits written comments will automatically become a party of record and will be notified of any decision on this project. PLEASE INCLUDE THE PROJECT NUMBER WHEN CALLING FOR PROPER FILE-IDENTIFICATION DATE OF APPLICATION: September 23,1998 NOTICE OF COMPLETE APPLICATION: September 25,1998 DATE OF NOTICE OF APPLICATION: September25.1998 r4111111111111111111t 4 �..� ov411110olniF4r riTk .44 NOIICEAP gy m. CERTIFICATION - , c1 fNc S e' , hereby certify that 3 copies of the above document were posted by me in "3 conspicuous places on or nearby the described property on S 6:2 &y & 19 CX . Signed: ATTEST: Subcribed and sworn before me, a Nortary Public, ' and for the tate of Washington residing ,on the 5' day of ( --'E94. '727 eig.A.e/... MARILYN KAMCHEFF COMMISSION EXPIRES 6/29/99 I , — I SY v‘NTo• NOTICE OF APPLICATION A Master Application has been filed and accepted with the Development Services Division of the City of Renton. The following briefly describes the application and the necessary Public Approvals. • PROJECT NUMBER/NAME: LUA-98-136,T PROJECT DESCRIPTION: The Olympic Pipe Line Company (OPLC) proposes to remediate an historic(1985)fuel spill leak in the Maplewood neighborhood. The petroleum in the subsurface resulted from a block valve fuel leak. The preferred alternative for cleanup of the residual fuel is air sparging and vapor extraction. Air sparging involves controlled injection of air below the water table to treat residual volatile and biodegradable hydrocarbons in groundwater and soil in the water table zone. A vapor extraction system would collect and remove the volatile petroleum vapors generated by sparging. The petroleum vapors would be treated and the vapor exhaust (carbon dioxide and water) would be emitted to the atmosphere through an • exhaust stack. , Aboveground equipment(blowers,air compressors,vapor treatment unit,electrical panel and controls)would be housed in two 400 square foot fenced enclosures. System installation land construction is expected in October 1998 and the system operation is anticipated for one to three years. The system would be operated until soil and groundwater cleanup levels are met. The application was initially considered to require SEPA environmental review and public notice was sent out for a proposed Determination of Non-Significance (DNS). Upon further evaluation of the proposal, it has been determined that is categorically exempt from SEPA thresholds and therefore the proposal does not require environmental review. A Temporary Use Permit is required for installation of the aboveground equipment enclosures. Temporary Use Permits are valid for a one year period and a one year extension may be granted. A Conditional Use Permit(CUP)shall be required if the equipment enclosures are needed beyond the two year period allowed under a Temporary Use Permit. PROJECT LOCATION: 3524 SE 5th Street and Maplewood Park,3400 SE 6th Street PUBLIC APPROVALS: Temporary Permit(T),Building Permit,Construction Permit Notice of Construction from the Puget Sound Air Pollution Control Agency Comments on the above application must be submitted in writing to Mr. Peter Rosen, Project Manager, Development Services Division, 1055 South Grady Way,Renton,WA 98055, by 5:00 PM on October 9, 1998. If you have questions about this proposal;or wish to be made a party of record and receive additional notification by mail,contact Peter Rosen at (425) 430-7219. Anyone who submits written comments will automatically become a party of record and will be notified of any decision on this project. PLEASE INCLUDE THE PROJECT NUMBER WHEN CALLING FOR PROPER FILE IDENTIFICATION DATE OF APPLICATION: September 23,1998 NOTICE OF COMPLETE APPLICATION: September 25,1998 DATE OF NOTICE OF APPLICATION: September 25,1998 r11111111111111111114. Bar•V..,dg. tk•evc' �o EE EM Ef --``� _ • • -- • , /i 5 PIS Wow v��o ;#4, --t .�0 Cam ♦-1 ." cizali EEL PRJBE(UA.,GCE) •w 0 • YYEONOq U ON.fOLwM PPE NtE COW.) N , [' WNWRYO .♦.1 W1tD I M 100E DIY O YtYIOY PY ' G O/91100AID 0.1001t E[(OIDi1 SYEIW • [Y MR NOTICEAP.I '" 0""D'vEarx sm o YmY I— OPLC arwc rw vu oanYn r NEIGHBORHOOD MOM 1mg i«wee a GO4•,•a ..Wong e.evweger_V Yn•n.e i.Yg..e I DETAIL MAP L 1F0w MwIM M"n nmrw lOn00nm SP-11. -98- 13(o,ECG V°`S a% 162305 9017 ' -1 d2305 9049 162305 9066 John W Dobson ' CITY OF RENTON CITY OF RENTON 6611 114th Ave SE 200 Mill Ave S 200 Mill Ave S Renton WA 98056 Renton WA 98055 Renton WA 98055 162305 9129 `512690 0055 512690 0060 CITY OF RENTON David M&Terri L Beal Troy Lee Deady 200 Mill Ave S • 26018 SE 38th Ct 3436 SE 5th St ;. Renton WA 98055 Issaquah WA 98029 Renton WA 98058 . 512690 0065 512690 0070 512690 0075 Samuel E Gomes Karen Nelsen Karla J Mayes 2222 Sahalee Dr, E 3500 SE 5th St 3508 SE 5th St Renton WA 98058 Renton WA 98058 Renton WA 98058 • 512690 0115 512690 0120 512690 0125 Jon B Caldwell Rudolph Paul Rollinger III Stefan G N Perrotti 3401 SE 5th St 501 Newport Ave SE 505 Newport Ave SE Renton WA 98058 Renton WA 98058 Renton WA 98058 512690 0130 512690 0135 512690 0140 ' Kenneth R&Jeannie M Sage W Burskey Travis S&Walimaki Petersen 3328 SE 6th St 1 3320 SE 6th St 3316 SE 6th St • Renton WA 98058 'Renton WA 98058 Renton WA 98058 512690 0145 ' 512690 0170 512690 0175 David W&Cecelia S Hulbert ' 'John W Dobson Vernon G Brunette 3312 SE 6th St ' 6611 114th Ave SE 3301 SE 6th St Renton WA 98058 .Bellevue WA 98006 Renton WA 98058 • 512690 0180 512690 0185 512690 0190 Aristella A Lind ; Chris M Downen John W Dobson 3309 SE 6th St 3317 SE 6th St 6611 114th Ave SE • Renton WA 98058 Renton WA 98058 Bellevue WA 98006 512690 0195 , 512690 0200 • 512690 0205 John W Dobson John W Dobson John W Dobson' 6611 114th Ave SE 6611 114th Ave SE 6611 114th Ave SE Bellevue WA 98006 Bellevue WA 98006 Bellevue WA 98006 512690 0210 ' 512690 0211 512690 0211 Roger J &Patricia Bozell John W Dobson John W Dobson 3217 SE 6th St' 6611 114th Ave SE 6611 114th Ave SE Renton WA 98058 Renton WA 98056 Renton WA 98056 512690 0215 512690 0220 512690 0225 John W Dobson John W Dobson Richard N Husom 6611 114th Ave SE 6611 114th Ave SE 532 Newport Ave SE Renton WA 98056 Bellevue WA 98006 Renton WA 98058 J ; 512690 0230 _•12690 0235 ,12690 0240 Larry A Schaut j Michael L Smith Neil D&Perisich Pa Van Hoff 12101 SE 96th PI 4207 SE 3rd 3425 SE 5th St Renton WA 98056 Renton WA 98056 Renton WA 98058 512690 0245 512690 0250 512690 0255 • William G &Karen Theodorsen Wendy J Ross Jill V Bateman 3429 SE 5th St , 3532 SE 5th St 3536 SE 5th Sf Renton WA 98058 Renton WA 98058 Renton WA 98058 512690 0260 512690 0285 512690 0290 Stephanie A Gonzales John C Ramsey D K Rose M Charbonneau 3604 SE 5th St 3517 SE 5th St 3525 SE 5th St Renton WA 98058 Renton WA 98058 Renton WA 98058 512690 0295 512690 0300 512690 0324 Randy L Mehl Timothy C&Carolyn Sa Wilson Joseph H &Patricia Conrad 3533 SE 5th St 559 Pierce Ave SE PO Box 6382 Renton WA 98058. Renton WA 98058 Kent WA 98064 512690 0325 512690 0326 512690 0327 Joseph H & Patricia Conrad Michael B&Margaret Siemion Daniel Callaway PO Box 6382 111 154th PI NE 1633 Boylston Ave#108 Kent WA 98064 ! Bellevue WA 98007 Seattle WA 98122 512690 0328 512690 0329 Joseph H &.Patricia Conrad Joseph H & Patricia Conrad PO Box 6382 PO Box 6382 Kent WA 98064 Kent WA 98064 • igmuimiupnoPPPPP---- a 0 CITY OF RENTON ,4,„..: ... ..,,, 4.a.... ..,1„,..„--. --4i.---- _IR 541 CI: Planning/Building/Public Works i,..1,.... ca: ;ICS*""4 114..14*•••;11 cita — i i C:. ,,O.,:ki IA .... 5 Tie I-055 South Grady Way - Renton Washington 98055 0 UP 0 4'9 8 0 29 chi-- lea= ,... _ .... * le ecCf3 * ADDRESS SERVICE REQUESTED ,.. , c)-5" --- qie, • • - );-,kri\4.‘1 ‘,;;•., •...,;,-;if., ' Lv-, ‘ ,k 162305 0017 1: 1\A John W Dobson . cy:0 .-- • 6611 114th Ave SE —--' Renton WA 98056 ADDRESS C"' caS g7 I , ••1 hi ililtdisiia llitllilititinsittititittiliiiiiiilliotititsill!! I RETURN to sENDEA 0-) z. P cr. , ' ,,, 6. 41, . CITY .OF RENTON Planning/Building/Public Works it ii. A ,1,61 �? 1055 South Grady Way - Renton Washington 98055 o ' SEP 0-4'0 0 a....�:fl61il a. 7 w v� . CEffi �" ADDRESS SERVICE REQUESTED v # i5 9 t•F F A. .E . ._ � Y p , li T,Aal I,V,/ 512690 0065 Samuel E Gomes ' 2222 Sahalee Dr E Renton WA 98058 �d0 S(�C�t 866� • to d 3 3 so 1- ADDRESS — �RETtlliN TO SENDER �6 VJd y"' , e. � II,I„l,I1,ll„IiIIi,,lli!,Ill„i1,IE,thiiIIiIli1Iiiiiiiill3l till _�� 1-‘i a 0 CITY OF RENTON ' ' " ''''4Vt'itif‘68;oiaibdttgresa•p• 10 Planning/Building/Public Works 055 South Grady Way - Renton Was " 55 • z,4 cf,. ciec p...c.1,41: / 1 /4 41krow tri i: 40, , Tor,t,v,:i „ „ ,. , . SEP 0 4168 edi."14 - U Z 9 ' * esairra -, gia Ci, * AZ W * ADDRESS SERVICE R UESTED Et 941-01 7 t. FL E tgtrA tit:s.4,6,4w, : 1-V} 771't, rr---71 t-;:'-'r•''7 n 7 C7 TFT, 512690 0145 ' • David W&Cecelia S Hulbert • ':1 i • 3312 SE 6th St Renton WA 98058 SFP I b 1998 /-s---e-N, ,._•RETURN - CiTY OF RENTON ipTo wRITER .i. _.d i • Engineering Dept '1 ADDRESSEE .1 co P °IA Hcl c , , , , , , , , , „ , UNKNOVVN . --4, . 1111111111111111111111111151111 lillislidviiifrithinlitithirliltilEliiill I 1 g v.1,. 'Bei...)..tr.r.t. ...i 4r., r I — 0 0 CITY OF RENTON . 4***i*4 Viat.,"64•ttiar=" * Planning/Building/Public Works 55 South Grady Way - Renton Washington 98055 „ a- a ce — o - 7 0SUP741 pore o, 4 ta I— • SEP 0 4'9 a 0°4 11% tC. . ADDRESS SERVICE REQUESTED aggiale •9S r u.- PRE A 71505614 U.S. POSTAGE .11- 14—LL.3,, ' _9- ,_:,, , to SEP 1 7 1998 512690 0235 Michael L Smith tr 4207 SE 3rd CITY sITF REXTCN Renton WA 98056 Proi-,,-;,-- ,-,,,,-4 SMIT207 980593003 iN 23 09/10/4S r----- . .._ _ RETURN TO SENDER 'RETURN , ---:-:2----,---1 boo, N., ..., ; NO FORWARD ORDER ON FILE 1 i R dM ST W 17-"P, UNABLE TO FORWARD inie-runiki_xm_ff,mmnmn IWDRESSEE -"-Q. aclis V/d 1 NKNOWN,U 4, - „1,,, swyss/7.4sztra - imialladh.hinth.11,4;14.difihinh6.11.1 , , 1 r - • CITE OF RENTON amo L Planning/Building/Public Works Department Jesse Tanner,Mayor Gregg Zimmerman P.E.,Administrator September 3, 1998 • Ms. Dana Carlisle GeoEngineers, Inc. 8410- 154th Avenue NE • • Redmond, WA 98052 SUBJECT: Olympic Pipeline Remediation Project No. LUA-98-136,ECF Dear Ms. Carlisle: i . The Development Planning Section":of;the City of Renton has determined that the subject application is complete according to';submittal requirements and, therefore, is accepted for review: It is tentatively scheduled for consideration by the Environmental Review Committee on September 29, 1998. Prior to that review, you will be :notified if any additional information is required to continue processing your application. Please contact me, at(425) 430-7219, if you have any questions. Sincerely, Peter Rosen Project Manager cc: Olympic Pipe Line Company • ACCrTLTR.DOC • 1055 South Grady Way-Renton,Washington 98055 � ^ . . MENV xm PROJECT NAME: ��/cn� 4f` c, o APPLICATION NO: L-UR~ 46^ 116 ,e4p ^~6`"`"v-- The following is a list of property owners within 300 feet of the subject site. The Development Gammes Division will notify these individuals of the proposed development. Oobonn,JohnVV 6611 114th Ave SE 162306 QO17 Renton VVAQGO5G City Of Renton 200 K8iU Ave G 162305 QO4S Renton VVAQ885S City OfRenton 200 Mill Ave 8 1623069066 Renton VVAQ8O55 City Of Renton 200 PNi||Ave 8 1623059129 Renton VVAS8O55 Beal, .David K8'Terh L 26018 GE38th[X 5126900056 Issaquah VVAS802Q Deady, Troy Lee 3436 SE 5th St 5126800080 Renton VVAQ8O58 Gomea, Samuel E;VViao|er, Colleen E 2222 Saha|ae Or E 512600 DO85 Renton VV/\Q8O58 Na|aen, Karen 3600 SE 5th Et. 512690 OO7O Renton VVA98O58 Mayes, Karla -' 3508 GE 5th Et 5126900075 Renton VVAQ8O58 Caldwell, Jon 8 3401 SE 6th St 512690 O115 Renton VV/\S8U58 RuUihgar, Rudolph Paul ||| 601 Newport Ave SE 5126900120 Renton VVAS8058 Parrnbi, Stefan G N;Burnhmm, Kris L 505 Newport Ave SE 5126900125 Renton VVAQ8058 8age, Kenneth R;Jeonnia PN 3328 SE 0th St 512690 O130 Renton VVA98O58 Burakay, VV 3320 8E Gth Et 512690 O1@5 Renton VVA98058 Petersen,Travis G;VVa|imaki 3318GE0th8t 5126900140 Renton VVAS8O58 Hulbert, David VV;[|oce|iaS 3312SE8thS8 6126900145 Renton VVAS8058 Ooboon' JohnVV 0011 114th Ave GE 512600 O17O Bellevue VVAQ8O00 Brunotte, Vernon G 3301 SE 8th St 5126900175 Renton VVAg8058 Lind' AristaUa A 3300 8E 8th St 512690 018U Renton VVASG058 Oownen' Chris yN 3317 GE 6th St 512690 O185 Renton VVAS8U58 ' .JmhnVV 6811 114th Ave SE 6126900190 � Bellevue VVAS8OOO Dobson.JohnVV 6611 114th Ave SE 5126900185 Bellevue VVAQ8O08 Dobson, John VV 0611 114th Ave GE 5126900200 Bellevue VVAS8ODO Ooboon'JohnVV 6811 114th Ave GE 5126900205 Bellevue VVAS8OO8 BozeU. Roger J;Po1ricia 3217GE6thGt 5126000210 Renton VVAS8O58 Oobuon. JohnVV 6611 114th Ave GE 5126900211 Renton VV/\98O58 OoUnon' JohnVV 6611 114th Ave GE 5126900211 Renton VV/\Q8O56 Oobson'John VV 6611 114th Ave 8E 5120900215 Renton VVA08O56 Oobmon.JohnVV 6611 114th Ave 8E 5126900220 Bellevue VVA08OD6 Huoom' Richard N 532 Newport Ave SE 5126900225 Renton VVAS8O68 Schaut. Larry A 12101 SE0GthP| 5186900230 Renton VV/\Q8O5G Smith, Michael L 4207GE3rd 5126000235 Renton VVAQ8O5G Van Huff' Neil O;Pmdm|ohPo 3425GE5thEt 5126000240 Renton VVAS8058 Theodoromn.William [S;Karen 34298E5thGt 5126900245 Renton VVA08058 Ross,Wendy J 3532SE5thEt 5126000250 - Renton VV/\9GO68 ' Bateman, Jill\J 3536GE5thEt 5126900255 Renton VVA98O58 Gonzales, Stephanie A 3604GE5thEt 5126800280 Renton VV/\9GO58 Ramsey,John C 3517 SE6thEt 5126000285 Renton VVA88O58 Char'bmnnoau. OK Rose K8 35258E6thEt 6126900290 Renton VVAS8O68 Mehl, Randy L 3533GE5thGt 5126900295 Renton VVAQ8O5Q Wilson, Timothy C|;Cannk/nSa 55S Pierce Ave SE 5128900300 Renton VVASGO58 Conrad, Joseph {]oia PO Box 5128900324 Kent VV/\SG0G4 Conrad, Joseph H;Po1 cia PO Box 8@83 5120900325 Kent VVA880O4 8immion. Michael B;YNargaret 111 154thP| NE 5126900326 � Bellevue VVA8GOO7 Callaway, Daniel 1G33 Boylston Ave#1D8 5126900327 Seattle VVA88122 Conrad, Joseph H;Patricia PO Box G382 6126900328 . Kent VVA98O84 Conrad, Joseph H;Patdo|a PC> Box 8382 5126900329 Kent VVA08DG4 ` p f • (Continued) NAME ADDRESS ASSESSOR'S PARCEL NUMBER C , ,, Applicant Certification I, C-�� rin kA C�`�1�1'YJI1V , hereby certify that the above list(s) of adjacent property (Print Name) owners and their addresses were obtained from: ❑ City of Renton Technical Services Records • oL� q Title Company Records 640 • King County Assessors Records = � 4ty0 Signed` tr I i ii1� AA. Date `6 —1 A • -ld N+t • (Applicant) .ortSV#.•' NOTARY ,. ATTESTED: Su scribed and sworn before me, a Notary Public, in_and for the State of Washi gton, residing at �'' p 'vLt �.a on the (SI- day of -)-32...444 IQ,JA , 19 Yr6. Signed /06- V)/ • 41/)/(/(t4"(1L. (Notary Public) CR n::>::>:::;::.;;::<:;::«:::::><::»::.;::::::.>:;>::::;::::»::::.:;;>:.;::<.::;:::�.,::.............C. ...TfF.ICAIION..: F. ....:...:.. . ...........................................................:..:.. „ ,. £ 'hereby certify that notices of the proposed application were mailed to :;:.:..�._::...;.�:::�:;..;::p:....perty owner on ''�x�<',.,:�:�!., ..... . .......•;::.;:.;;:.>::.::<.; . :.: :: ::::::: :::...;..,y:::, S bscrtbed ancl $worn before me, a Notary Pub11c, to and for the State of Washmgton:�:::::: .,es�din.9;at;:<::.>; ::.;�:. :::.; �:::>::> ::::::::>:::«:»>:«<::::::::<::::cn.:the:.;:.:�:.:.:��:.;:.;:;;• ............................... ,.: ::.::.................. ..................... ' Iistprop.doc REV 07/05 MARILYN KAMC -IEFF COMMISSION EXPIRES 6/29/99 Development Regulations " SriY O Used For Project Mitigation: ,proposal Is subject to the City's SEPA Ordinance,Zoning Code,Public i irks Standard's.4. + Proposed Mitigation Measures: • ,,t, After a preliminary review of the application,It is not anticipated that Mitigation Measures will be necessary to address r',NT., potential project impacts that am not already covered by existing codes and regulations. NOTICE OF APPLICATION Comments on the above application must be submitted In writing to Peter Rosen,Project Manager,Development Services Division,1055 South Grady Way,Renton,WA 98055,by 5:00 PM on September 17,1998. If you have AND'PROPOSED DETERMINATION I questions about this proposal,or wish to be made a party of record and receive additional notification by mail,contact Peter Rosen at(425)430-7219. Anyone who submits written comments will automatically become a party of record and OF NON-SIGNIFICANCE(DNS) will be notified of any decision on this project. CONTACT PERSON: PETER ROSEN (425)430-7219 DATE: • September 03,1998 i PLEASE INCLUDE THE PROJECT NUMBER WHEN CALLING FOR PROPER FILE IDENTIFICATION LAND USE NUMBER: LUA-98-136,ECF I , APPLICATION NAME: 1 Olympic Pipeline Remedtatton i PROJECT DESCRIPTION: The Olympic Pipe Line Company(OPEC)proposes to rometliate an historic fuel spill leak In the Maplewood neighborhood. The petroleum in the subsurface resulted from a block valve fuel leak that occurred in 1985.The preferred alternative for cleanup of the residual fuel is air seaming and vapor extraction. I , • The system would Include 15 vertical extraction wells,one underground horizontal vapor collection trench,20 vertical air sparging wells and associated underground piping.Petroleum vapors recovered by the system would be treated using a ' vapor treatment unit.The aboveground equipment(blowers,air compressors,vapor treatment unit,electrical panel and controls)would be housed In two 400-square foot fenced enclosures. The air sparging system would volatilize and biodegrade the petroleum through the injection of air to the subsurface(via the sparging wells). The vapor extraction 1 system would collect and remove'the volatile petroleum vapors generated by sparging.The petroleum vapors would be treated and the vapor exhaust(carbon dioxide and water)would be emitted to the atmosphere through an exhaust slack • , PROJECT LOCATION: 1 3524 SE 5th Street and Maplewood Park,3400 SE 6th Street - OPTIONAL DETERMINATION OF NON-SIGNIFICANCE(DNS):As the Lead Agency,the City of Renton has determined that significant environmental Impacts are unlikely to result from the proposed project.Therefore,as111111 permitted under the RCW 43.21 C.110,the City of Renton Is using the Optional DNS process to give notice that a DNS-M I :„„„ , "^ Is likely to be Issued.Comment periods for the project and the proposed DNS are Integrated into a single comment 4Q t •o n,_•_o enc.D��,, /^ period.There will be no comment period following the Issuance of the Threshold Determination of Non-Significance . _■ , (DNS).A 14 day appeal period will follow the issuance of the DNS. �1�J. V' `��4 r �p /�®Q� F� �fel. .sJ v�+;-c (z/h"r� PERMIT APPLICATION DATE: September 1,1998 ��. D QCa�'�6'. .'• /� • NOTICE OF COMPLETE APPLICATION: September 3,1998 —`, ,6\ 14 �''Q�„r Permits/Review Requested: SEPA Environmental Review,Construction Permit 4'T;r;; .e7r* �� Other Permits which may be required: Notice of Construction from the Puget Sound Air Pollution Control ` �► /., ��. Agency(PSAPCA). , �. o, �/ Requested Studies: Environmental checklist ,,,�,,,.,, r 1014. ,�� , Location where application may I7. "" ^^ I • be reviewed: Planning/Building/Public Works Division,Development Services Department, i I --��m .,o 1 1055 South Grady Way,Renton,WA 98055 } _ �,,,,o„ I — '. one =. PUBLIC HEARING: Public Hearing is not required.Administrative review only. •-`"y""'""'°" `""^"^'^'ss*nm. ,—...,7.,� .a•., CONSISTENCY OVERVIEW: I Analytical process Project consistency refers to whether a project Is consistent with adopted and applicable development regulations,or In their absence,comprehensive plan policies.RCW 36.7013.110(2)(g)provides that the Notice at Application(NOA) Include a statement of the preliminary determination of a project's consistency with the type of land use,level of development,infrastructure,and Character of development if one has been made at the time of notice.At a minimum, every NOA shall include a determination of the project's consistency with the zoning,comprehensive plan and development regulations. Land Use: Proposal site is located within the Residential-8 DU/AC(R-6)zone.The proposal is consistent with zoning standards. - Environmental Documents that 'r I Evaluate the Proposed Project' Final Draft,Cleanup Action Plan,Maplewood Neighborhood Historical Fuel Release,August 11,1998. • GENMAL07.00C ' GENMALOT.DOC I _ _ _ I -_ CERTIFICATION • <V1N�11'h herebycertifythat 3 copies of the above I, Sq,vt�l,v� lam.document ere posted by me in 3 conspicuous places on or nearby the described property on Se�q• ,t yrt5 • • Signed: �-i Subcribed and sworn before me, a Nortary Public,in and State of ATTEST: Washington residing i 12,-,aAr-s,-L1 , on the oqy-, day of ( . MARILYN • 0---e---ty• 7ii"-zez---A---Li dig.r-6--, KAMCHEFF COMMISSION EXPIRES 6/29/99 +C.)'S:amr1;,..,‘1t) N.'NT1/4.;. NOTICE OF APPLICATION AND PROPOSED DETERMINATION s) OF NON-SIGNIFICANCE (DNS) ✓ DATE: September 03,1998 LAND USE NUMBER: LUA-98-136,ECF APPLICATION NAME: Olympic Pipeline Remediation PROJECT DESCRIPTION: The Olympic Pipe Line Company(OPLC)proposes to remediate an historic fuel spill leak In the.Maplewood neighborhood. The petroleum in the subsurface resulted from a block valve fuel leak that occurred in 1985. The preferred alternative for cleanup of the residual fuel is air sparging and vapor extraction. The system would include 15 vertical extraction wells,one underground horizontal vapor collection trench,20 vertical air • sparging wells and associated underground piping. Petroleum vapors recovered by the system would be treated using a vapor treatment unit. The aboveground equipment(blowers,air compressors,vapor treatment unit,electrical panel and controls) would be housed in two 400-square foot fenced enclosures. The air sparging system would volatilize and biodegrade the petroleum through the injection of air to the subsurface (via the sparging wells). The vapor extraction system would collect and remove the volatile petroleum vapors generated by sparging. The petroleum vapors would be treated and the vapor exhaust(carbon dioxide and water)would be emitted to the atmosphere through an exhaust stack. PROJECT LOCATION: 3524 SE 5th Street and Maplewood Park,3400 SE 6th Street OPTIONAL DETERMINATION OF NON-SIGNIFICANCE(DNS): As the Lead Agency,the City of Renton has determined that significant environmental impacts are unlikely to result from the proposed project. Therefore,as permitted under the RCW 43.21 C.110,the City of Renton is using the Optional DNS process to give notice that a DNS-M is likely to be issued! Comment periods for the project and the proposed DNS are integrated into a single comment period. There will be no comment period following the issuance of the Threshold Determination of Non-Significance (DNS). A 14 day appeal period will follow the issuance of the DNS. PERMIT APPLICATION DATE: September 1,1998 NOTICE OF COMPLETE APPLICATION: September 3,1998 Permits/Review Requested: SEPA Environmental Review,Construction Permit Other Permits which may be required: Notice of Construction from the Puget Sound Air Pollution Control Agency(PSAPCA). Requested Studies: Environmental checklist Location where application may be reviewed: Planning/Building/Public Works Division,Development Services Department, 1055 South Grady Way,Renton,WA 98055 PUBLIC HEARING: Public Hearing is not required. Administrative review only. CONSISTENCY OVERVIEW: Analytical process Project consistency refers to whether a project is consistent with adopted and applicable development regulations,or in their absence,comprehensive plan policies. RCW 36.70B.110(2)(g)provides that the Notice of Application(NOA) include a statement of the preliminary determination of a project's consistency with the type of land use,level of development,infrastructure,and character of development if one has been made at the time of notice. At a minimum, every NOA shall include a determination of the project's consistency with the zoning,comprehensive plan and development regulations. Land Use: Proposal site is located within the Residential-8 DU/AC(R-8)zone. The proposal is consistent with zoning standards. Environmental Documents that Evaluate the Proposed Project: Final Draft,Cleanup,Action Plan,Maplewood Neighborhood Historical Fuel Release,August 11,1998. GENMALOT.DOC v Development Regulations Used For Project Mitigation: The proposal is subject to the City's SEPA Ordinance,Zoning Code,Public Works Standard's. Proposed Mitigation Measures: After a preliminary review of the application,It is not anticipated that Mitigation Measures will be necessary to address potential project impacts that are not already covered by existing codes and regulations. • Comments on the above application must be submitted in writing to Peter Rosen, Project Manager, Development Services Division, 1055 South Grady Way, Renton, WA 98055, by 5:00 PM on September 17, 1998. If you have questions about this proposal,or wish to be made a party of record and receive additional notification by mail, contact Peter Rosen at(425)430-7219. Anyone who submits written comments will automatically become a party of record and will be notified of any decision on this project. CONTACT PERSON: PETER ROSEN (425)430-7219 PLEASE INCLUDE THE PROJECT NUMBER WHEN CALLING FOR PROPER FILE IDENTIFICATION # —.W,m,. SC sxn o Q o oo. _. 0000 O NIC4 1:71 Silt? ' , .Ng,SW o '.44.DI,.., 0 4' 4..liti „M 1. v� aram Q . .. ;;Y ?a11" :xc 00w - _- j V.., 4� `ice �� .�� x-- -4'w, i• k)4 00 ij A 061.Ya.1101G , V.,• SOS.PWC PPRL W , .DOOTOR•3 S(01.T.0 PPS ME COSMO) x .•a M SIAOOOAC DIUO � Opy V. /EYIWEm~OW"KM Owe 0 Wry DapsDaps IS 0 IIOICIOIONO MIL DO!SWAM M 100E III• or,or NOOot nu. Ft • x*NOSED 1,704W flR GALL e I N PT TE Ox M d .l- [I FB .o-I. �YO1 Pxmxr SW eyOmn .nNM'G.h .ep n' ONSAa AM Op Co.,.lO/e/EE.((AI.Eg(DCj$ , '.pa� NEDIEGTHABIOL RMHAOPO DOPLC ''''' xs.n-iAMn. ,..a.mnW.� a -nws,vHR - • ( GENMALOT.DOC ' .. ......::-�.::-v:n-::..::::::\?•`}:.}:?•:vT:�:!h}Y•%.}:C.::.:C�!C?C4:C•:?:?v:::.w::x; .v::.v.�...-.:..v::::::.................. v/...:.n:A:n... i:.'fiii:ii::.:::•.......:.: Z::::Y.tii}iii�Hr::::Y:::j:hi :::i>i'.}::C:4'v:ii:._';i:;::•.:::}-:•.. .:N{,e;::}Ti}TTi'^:?C::-;•Ti:}.:?J:-:i:i:•ii:}.;v!:iifii::i:•iii:i.i�:M':::.?:::�i:•Y:i}:if�:;;4.;:_ vi}f-}::.}:}^:::•.:::... +..e::::::... ...C.:CC.i:!::::{:Cni'v...... ::::::::•:::::::::.::n..::.::.v::::::::: r::::.v::::.............r:: .nv.:.x:4.:•:�:?-};:?C...................::. .... w::.':}. .........:...............................v::••:..:.....::::?C.};?�::!???.:i:i?Ci:�}}:Gi}}:�}.. .........:...:.....:...... ....... r....r............. .::::•.:v::::'-:::�....v::.ii:.i:::.T.::•:.v:.:v.:v.:w:::•?.v...v:::::vi.:.�v x:::x:::::•.f•:v:x:.v:. r.nv:.:::::... :::v:•- T'::::•}TiTi'1.i'r':i:.:::F..::.:?4}iX:'::ti.i•::{:.T•:.TT•.:?.}iii:4T:i:........::.v:•ii}}:?i::::v: ... ........................::... ..:':::!::.....:.�:. ........... :::V EI,l."��::T:i:i:�:?!!<Lw::iSi�:i::+:::?'-:?�v(:'v:':ji':i'� ':vi::v�:';:'':�v::::��T.Y:�•rii•:.:::i�?�.�} ..��::::};::�:::<4'�•::::::n��•};:?} .:.:::.::::.::.::: ....:..................................... E ...::::::::::....... ........................... � ;;::�::;::;:::'<:;:::;<::: ::>:<•»:;:::::: MATION>::;>: ?:.::}>::.::::.:::..�:.::::::. Note 'if;there 3s;:rnore:than;one>legal owner please:attach ci additional;: ti8farcied`'N48ster•'A61icaffor4.foc:each.iwriai ................. .-.. PROJECT OR DEVELOPMENT NAME: NAME: City,of Renton Remediation System Maplewood Historic Fuel Release - Olympic Pipe Line Company : PROPERTY/PROJECT ADDRESS(S)/LOCATION: ADDRESS: 1055 'Grady Way 3524 SE 5th Street and Maplewood Park 0. SE 6th Street I 9 333c) KING COUNTY ASSESSOR'S ACCOUNT NUMBER(S): • CITY: Renton, WA ZIP: 162-305-912907 162-305-906602( -IG) TELEPHONE NUMBER: (Carolyn Boataman EXISTING LAND USE(S): 425/430-7211) Residential park and utility right-of-way ::: ::::: ...........< :;.:: :A.':..P-.-.::: :..::A::::.::?<;< .:>::;ether?! an.;TQw.:...:..:.: :::::.:T;:.:_:.}:}:;.T}:;<• PROPOSED LAND USES: No proposed change NAME: Sandy Conlan COMPANY (if applicable): EXISTING COMPREHENSIVE PLAN MAP DESIGNATION: Olympic Pipe Line Company Residential single family ADDRESS: P.O. Bog 1800 PROPOSED COMPREHENSIVE PLAN MAP DESIGNATION (if applicable): 2319 Lind Ave. SW Not applicable CITY: Renton, WA ZIP: 98057 EXISTING ZONING: R-8 TELEPHONE NUMBER:,, 425/227-5209 PROPOSED ZONING (if applicable): PP,.. ,::;<::!� .;:<.:;:: .} ::::.::?}.:>:}:<.>::;:::.::.:.:.;: >:.:.;:.;;:.::.;:.>::?. :?_>}:.}::.:.TT:.:;;- Not a licable T 110 SITE AREA (SO. FT. OR ACREAGE): NAME: 'Dana Cailisle:- , 1 acre ,lr).l PROJECT VALUE: COMPANY (if applicable):,-..Uean ineers, Inc. $150,000 ADDRESS: 8410 154th Ave.:,_NE • .. IS THE SITE LOCATED IN THE AQUIFER PROTECTION AREA? Yes CITY: Redmond, WA ZIP: 98052 IS THE SITE LOCATED IN ANY OTHER TYPE OF ENVIRONMENTALLY SENSITIVE AREA? TELEPHONE NUMBER: 425/861-6000 None known r . • :...:.....::.:•:::,..::::;.;::.LEGAVP... SCRh.• ., ON:OF::.PR • .: : .; ::.: ,:. : ... i!000. s-$.6.::: i':: .: :. .::.:..:..:.::. .. . . ::.:.::....:PERTY:;:::{Attach,:sep:=:;:=:-e;sheeti:;�#:;;ne.cessar .. .....ig :: Abbreviated Legal Descriptions Block Valve •Site (3524 SE 5th Street) : STR 162305 Ta lot 129 Por of Defense Plant Corp R/W in GL 6 LY Btwn Blks 4 & 8 of Maplewood Div #2 Maplewood Park (3400 SE 6th Street): 'STR 162305 Taxiot 66 Por of Defense Plant R/W in GL 6 LY Btwn SE 142nd St & SE 144th St • .::.«>:.::::.::.;.;.:;;::<:;::.;:::.:::.:::;:.; ...:::eC...:;atl..a llctlon.:: :. GYP PPY.:.�::..:tX.:staff;wlll.tretrmr!ne:>fees;:;g:::>:>:. »:>:::: > �::»<:::>::<::;«, —ANNEXATION $ SUBDIVISION: — COMP. PLAN AMENDMENT $ _REZONE $ _ LOT LINE ADJUSTMENT $ SPECIAL PERMIT $ _ SHORT PLAT $ TEMPORARY PERMIT $ 50,00 _TENTATIVE PLAT $ _ CONDITIONAL USE PERMIT $ _ PRELIMINARY PLAT $ _SITE PLAN APPROVAL $ — FINAL PLAT $ — GRADE & FILL PERMIT $ (NO. CU. YDS: ) - PLANNED UNIT DEVELOPMENT: $ _ VARIANCE $ • • (FROM SECTION: ) _ PRELIMINARY _WAIVER $ FINAL _WETLAND PERMIT $ — —ROUTINE VEGETATION MANAGEMENT PERMIT $ MOBILE HOME PARKS: $ _ BINDING SITE PLAN $ SHORELINE REVIEWS: _SUBSTANTIAL DEVELOPMENT $ _ CONDITIONAL USE $ _VARIANCE $ _ EXEMPTION $No Charge g ENVIRONMENTAL REVIEW REVISION $illESINERNMEENNIENSIMM $ / �00 .:........................::::::.�:::: :t......::::QWN.ER.SHIP.::::;.:eg>-::a>;:>.::.;:.;:.;:.::>:::;;:::.;::.:::::.>::;:;.:;::<:«.:.;:.:.:<-:n::.;:n;::-::.>;::::<:-:>;:.:::.;: I, (Print Name)e[(3DOU-.L. G- outg. , declare that I am (please check one)_the owner of the property involved in this application, ✓the authorized representative to act for the property owner(please attach proof of authorization), and that the foregoing statements and answers herein contained and the information herewith submitted are in all respects'true and correct to the best of my knowledge.and belief,. 4T( Cd f-eb(T01-1 - VLANOA(7 /SUik.0016-/ 9LASVC WcItiel ,. ,.,�/ ATTEST: Subscribed and sworn-to_b,efczie me,'a Notary Public,in and Q / ( l (CO's" 1110/W S 1' for the State of (_t 24-S(-f . residing ate; (Name or Owner/Representative) o1'(-Gt,o, 0 S1 A- tlt$-. _ , on'the'. day of Pf" �( s p- ,sg� 4 I GALAt2/ , • • (Signature of Owner/Representative) " <1-1.4146.-(_.. .4 4..h_s______=. , (Signature of Notary Pub' 7 rn s si e. ....:...... ::::::.::>•:.::::::::«:•;.::::.:<::_.;::;:_::;:>:.;;:..;;;>..;:.::::::::-::.:.::::::L::e.......:.:.............. , . .. � . : .....:.... EREMIVIti ...........:.::::>:::::.�::,.:.::.:•:::.:.:::�:�.:.:-.>:•::?:.-::•:;:•: ::.•:.�:.->:.•:..:.:::•.�•:..::>::,::.:: :.;:: :•::<.;:.•::::.:: .:...:CtyFile.Nu.rrmbr : : , : : : : :.-:: :k: ::. A - ::::..A : .: : A : . . : . ::'P. EPJt: ifFf :PPR :.: : : A > - A HgSHPLA:::SHPI..: .::: :.� : = ::: ..;: : :: ::: ;it: ; . _ . :>: : : »: . .. . .OTAFi:.::<: : :: : : : !i:i•::;;;:; . TOT POSTA : :. . . . ^ :::;:;;:.;:.-:::::.: ; .g: :: .;;; : :: ;;; .::n: .. . :><•-:>»:> > ; ;;: :z # i:%:: >: :MASTERAP.DDC REVISED B/97 PROJECT NARRATIVE REMEDIATION SYSTEM MAPLEWOOD NEIGHBORHOOD HISTORIC FUEL RELEASE RENTON, WASHINGTON FOR OLYMPIC PIPE LINE COMPANY INTRODUCTION Environmental site characterization studies at the OPLC Maplewood block valve site indicate that weathered gasoline- and diesel-range petroleum hydrocarbons are present in ground water and in soil within the zone of water table fluctuation beneath a portion of the neighborhood. The petroleum hydrocarbons in the subsurface originated from a fuel leak at the OPLC block valve that occurred in about 1985. The release was discovered in October 1986. Based on current ground water monitoring data, the plume.of dissolved-phase petroleum hydrocarbons in ground water (at concentrations greater than the Model Toxics Control Act [MICA] Method A cleanup levels) is approximately 1,200 feet long in the direction of the ground water gradient(to the southwest). The plume width is a maximum of about 350 feet at the downgradient margin of the plume. The highest total petroleum hydrocarbon (TPH) concentrations are generally in the central portion of the plume with TPH (sum of gasoline- and diesel-range) concentrations in ground water between about 2 and 30 milligrams per liter (mg/1). Gasoline- and diesel-range hydrocarbons are present in soil surrounding the block valve and within the central area of the plume between depths of about 11.5 to 15 feet below ground surface (bgs) at the upgradient margin of the plume and 18 to 20 feet bgs at the downgradient,margin of the plume.No LNAPL(free liquid petroleum) is known to be present within the study area. POTENTIAL EXPOSURE PATHWAY DISCUSSION The City of Renton operates several public water supply wells within about 1.5 miles of the site, including the downtown well field situated 1.5 miles west of the site, and the Maplewood golf course well field approximately 1/4-mile east of the site. Past history of the Maplewood fuel spill and aquifer modeling by the City of Renton indicate that the downtown well field is not at risk from the Maplewood fuel leak. The upgradient golf course wells pump ground water from a deep aquifer situated between 200 and 400 feet below grade. Information obtained from studies in the area suggest that shallow ground water in the vicinity of the OPLC Maplewood block valve would not migrate to the golf course wells during pumping conditions.However, empirical data and/or modeling from a pumping test are needed to confirm this. Ground water beneath the site discharges to the Cedar River. Petroleum contaminants were not detected in ground water samples obtained from monitoring wells situated between the northern bank of the Cedar River and the plume. Therefore, it appears that the,pl me attenuates by natural processes before discharging to the Cedar River. The dissoled"p liMe is expected to continue to shrink over time. 00/0F ‘,00` ®�e® REMEDIATION SYSTEM: AIR SPARGING WITH VAPOR EXTRACTION Air sparging is the preferred alternative for cleanup of the residual fuel. Air sparging is a technically feasible remedial technology for this site and is a different approach than the ground water and vapor recovery techniques applied at the site in 1987/1988. Air sparging involves controlled injection of air below the water table to treat residual volatile and biodegradable hydrocarbons in ground water and soil in the water table zone. The relatively permeable soil types beneath the site are favorable for air sparging. The air sparging system would consist of a series of 2-inch-diameter vertical air sparging wells located within the block valve property (3524 Southeast 5th Street),the north and west sides of Maplewood Park (3400 Southeast 6th Street) and next to the eastern curb of Newport Avenue Southeast (between 3330 Newport Avenue Southeast and 3400 Southeast 6th Street). The air sparging wells will be about 25 feet deep. The well monuments will be flush with the ground surface, or covered with sod, after completion. The wells would be connected via shallow underground piping (2 to 4 feet below the ground surface) to air compressors situated in the aboveground treatment equipment enclosures. The underground piping will be located beneath the following areas: (1) the southern margin of the block valve property, (2) Southeast 5th Street between the block valve property and Maplewood Park, (3)the northand west sides of Maplewood Park and (4)the grassed planter strip on the east side of Newport Avenue Southeast (between 3330 Newport Avenue Southeast and 3400 Southeast 6th Street). The proposed locations for underground piping cross or run parallel with several existing utilities including city several will necessitate Two equipment enclosures, approximately 400 square feet each, will be constructed for the aboveground treatment equipment. The northern equipment enclosure will be situated adjacent to the east side of the existing OPLC block valve enclosure. The southern equipment enclosure will be situated west of the existing playground in Maplewood Park. The equipment enclosures will consist of a concrete pad surrounded by an 8-foot high chain-link fence with sight-obscuring slats. Volatile hydrocarbon vapors, expected during the initial phases of sparging, would be collected through reactivated vapor recovery trench VRS-1 and a series of 2-inch diameter air sparging wells to be installed. Recovered vapors would be routed via underground piping to a vapor treatment unit (catalytic oxidizer) situated in the northern equipment enclosure. The hydrocarbon vapors will be treated by oxidation and reduced to carbon dioxide and water vapor. Exhaust from the vapor treatment unit will be emitted to the atmosphere through a 12-to 15-foot high exhaust stack. A Notice of Construction permit from PSAPCA will.be obtained for operation of the vapor treatment unit. The remediation equipment will be sound-proofed to the extent possible. Additionally, the system can be shut down during nighttime hours to reduce noise inconvenience to nearby residents. r , The system will be operated until soil and ground water cleanup levels are met. The estimated duration of system operation is 1 to 3 years. OPLC proposes to install the system in October 1998. System startup will be in November. Once the cleanup is complete, the system will be decommissioned and the equipment enclosures will be removed. Vapor and ground water monitoring will be performed throughout the neighborhood to evaluate the effectiveness of the remediation system and to confirm that the vapor recovery systems are effectively removing petroleum vapors from the subsurface. "Ro. m.. „EN.... TA. ......L.......„,„„c.REcKusT.„...„,„„.„:„.„.„.„.„..„.„.„:„:„.„.„ PURPOSE OF CHECKLIST: The State Environmental Policy Act (SEPA), Chapter 43.21C RCW, requires all governmental agencies to consider the environmental impacts of a proposal before making decisions. An Environmental Impact Statement (EIS) must be prepared for all proposals with probable significant adverse impacts on the quality of the environment. The purpose of this checklist is to provide information to help you and the agency identify impacts from your proposal (and to reduce or avoid impacts from the proposal, if it can be done) and to.help the agency decide whether an EIS is required. INSTRUCTIONS FOR APPLICANTS: This environmental checklist asks you to describe some basic information about your proposal. Governmental agencies use this checklist to determine whether the environmental impacts of your proposal are significant, requiring preparation of an EIS. Answer the questions briefly, with the most precise information known, or give the best description you can. You must answer each question accurately and carefully, to the best of your knowledge. In most cases, you should be able to answer the questions from your own observations or project plans without the need to hire experts. If you really do not know the answer, or if a question does not apply to your proposal, write'"do not know" or"does not apply". Complete answers to the questions now may avoid unnecessary delays later. Some questions ask about governmental regulations, such as zoning, shoreline, and landmark designations. Answer these questions if you can. If you have problems, the governmental agencies can assist you. The checklist questions apply to all parts of your proposal, even if you plan to do them over a period of time i or on different parcels of land. Attach any additional information that will help describe your proposal or its environmental effects. The agency to which you submit this checklist may ask you to explain your answers or provide additional information reasonably related to determining if there may be significant adverse impact. USE OF CHECKLIST FOR NONPROJECT PROPOSALS: Complete this checklist for nonproject proposals, even though questions may be answered "does not apply." IN ADDITION, complete the SUPPLEMENTAL SHEET FOR NONPROJECT ACTIONS (part D). For nonproject actions (actions involving decisions on policies, plans. 4, dprogram`s),F._#hlr�r-eferences in the checklist to the words "project," "applicant," and "property4i:\ e s ris' wldrbeTr_e'ad as "proposal," "proposer," and "affected geographic area," respectively. SEP 01 1J. RECEIVE A. BACKGROUND 1. Name of Proposal (if applicable): Remediation System for Olympic Pipe Line Company 2. Name of Applicant: Olympic Pipe Line Company 3. Address and phone number of applicant: Address: 2319 Lind Avenue Southwest City/State/Zip: Renton, Washington 98057 Phone: Sandy Conlan: (425) 227-5209 4. Date checklist prepared: August 31, 1998 5. Agency requesting checklist: City of Renton 6. Proposed timing or schedule: System installation and construction in October 1998 and system operation for 1 to 3 years 7. Do you have any plans for future additions, expansion, or further activity related to or connected with this project: No 8. List any environmental information you know about that has been prepared, or will be prepared, directly related to this project. "Final Draft, Cleanup Action Plan, Maplewood Neighborhood Historical Fuel Release" dated August 11, 1998. 9. Do you know whether applications are pending for governmental approvals of other proposals directly affecting the property covered by your proposal? If yes, explain. None known 10. List any governmental approvals or permits that will be needed for your proposal, if known. Notice of Construction from Puget Sound Air Pollution Control Agency, Construction Permit from City of Renton. 111 Give brief, complete descriptions of your proposal, including the proposed uses and the size of the project and site. Proposal is for installation and operation of a remediation system that uses air sparging and vapor extraction to clean up residual petroleum in subsurface soil and ground water. The petroleum in the subsurface resulted from a block valve fuel leak that occurred in 1985. The system will include 15 vertical vapor extraction wells, one underground horizontal vapor collection trench, 20 vertical air sparging wells and associated underground piping. Petroleum vapors recovered by the system will be treated using a vapor treatment unit. The aboveground equipment Iblowers, air compressors, vapor treatment unit, electrical panel and controls) will be housed in two 400-square foot fenced enclosures. The air sparging system will volatilize and biodegrade the petroleum through the introduction of air to the subsurface (via the sparging wells). The vapor extraction system will collect and remove the volatile petroleum vapors generated by sparging. The petroleum vapors will be treated and the vapor exhaust (carbon dioxide and water) will be emitted to the atmosphere through an exhaust stack. 12. Location of the proposal. Give sufficient information for a person to understand the precise location of your proposed project, including a street address, if any and section, township, and range if known. If a proposal would occur over a range of area, provide the range or boundaries of the site(s). Provide a legal description of, site plan, vicinity map, and topographic map, if reasonably available. While you should submit anyplans required by the agency, you are not required to duplicate maps or detailed plans submitted with any permit applications related to this checklist. The components of the remediation system will be located in the OPLC block valve area ( . . 5 h Street-3(5-29 and Maplewood Park 3400 S.E. 6th Street). The site area is located in th'e-Southwest 1/4 of the Southeast 1/a of Section 16, Township 23 North, Range 5 East. B. ENVIRONMENTAL ELEMENTS 1. EARTH a. General description of the site (circle one): flat, rolling, hilly, steep slopes, mountainous; other: Flat b. What is the steepest slope on the site (approximate percent slope)? <0.5 percent. c. What general types of soils are found on the site (for example; clay, sand, gravel, peat, muck)? If you know the classification of agricultural soils, specify them and note any prime farmland. Alluvial silts and silty sand underlain by sand and gravel. d. Are there surface indications or history of unstable soils in the immediate it vicinity? If so, describe. No. e. Describe the purpose, type, and approximate quantities of any filling or grading proposed. Indicate source of fill. No filling or_grading will occur with the exception of shallow utility trenches for placement of underground air sparging and vapor extraction piping. Excavated soil will be used as trench backfill to the extent possible. f. Could erosion occur as a result of clearing, construction, or use? If so, generally describe. Construction of piping and equipment pads will involve localized removal of grass within the block valve, Maplewood park, and grassed planter strip, and excavation of shallow trenches to place utilities. Following • construction, the utility trenches will be restored to their current condition with arass or pavement. g. About what percent of the site will be covered with impervious surfaces after project construction (for example, asphalt or buildings)? The proposed equipment enclosures are about 400 square feet each. The remainder of the site area will remain in it current configuration of grassed park and right-of-ways. h. Proposed measures to reduce or control erosion, or other impacts to the earth, if any: Trench spoils will be temporarily stockpiled and covered with plastic sheeting to minimize sediment from flowing off the site. if necessary, the stockpile area will be surrounded with a berm. Catch basins with the immediate vicinity of the site will be protected during construction to prevent sediment from entering the catch basins. 2. AIR 2 a. What types of emissions to the air would result from the proposal (i.e., dust, automobile, odors, industrial wood smoke) during construction and when the project is completed? If any, generally describe and give approximate quantities, if known. A small amount of dust may be produced during system construction activities. Additionally, operation of trenching equipment, forklifts and other equipment will produce some exhaust. Air sparging will liberate volatile petroleum vapors in the subsurface. The purpose of the vapor extraction system is to collect, remove and treat the vapors. The vapor treatment unit exhaust will consist of 1,500 cfm of processed atmospheric air and carbon dioxide and water which result from the treatment of petroleum vapors. The vapor treatment unit (electric catalytic oxidizer) is designed to oxidize 99.5 percent of the petroleum vapors. The resulting quantity of petroleum hydrocarbons in the vapor exhaust will be less then 2 pounds per day. Vapor treatment unit operation and emissions will meet criteria established by Puget Sound Air Pollution Control Agency (PSAPCA). b. Are there any off-site sources of emissions or odor that may affect your proposal? If so, generally describe. None known c. Proposed measures to reduce or control emissions or other impacts to air, if any: The purpose of the vapor extraction system and vapor treatment unit is to reduce and control emissions to the air and potential exposures via subsurface migration of petroleum vapors. A vapor monitoring program will be implemented to confirm that the vapor extraction system is effectively removing petroleum hydrocarbon vapors. The monitoring program will include regular measurements of combustible vapor concentrations in monitoring wells and residential crawl spaces and basements. Additionally, periodic sampling of indoor air will be performed to verify that residents are not exposed to volatile hydrocarbons generated by the air sparging system. Exhaust from the vapor treatment unit also will be tested on a regular basis to confirm that the catalytic oxidizer is operating properly. 3. WATER a. Surface Water 1) Is there any surface water body on or in the immediate vicinity of the site (including year round and seasonal streams, salt water, lakes, ponds, wetlands)? If yes, describe type and provide names. If appropriate, state the stream or river into which it flows. The nearest surface body of water is the Cedar River approximately 600 feet south of the site. 2) Will the project require any work over, in, or adjacent to (within 200 feet) the described waters? If yes, please describe and attach available plans for this work. No. 3) Estimate the amount of fill and dredge material that would be placed in, or removed from, surface water or wetlands and indicate the area of the site that would be affected. Indicate the source of fill material and/or the disposal site. Not applicable. 4) Will the proposal require surface water withdrawals or diversions? Give 3 general description, purpose, and approximate quantities, if known. No. 5) Does the proposal lie within a 100-year floodplain? If so, note flood-plain location on the site plan. No. The entire site is located outside of the 100- year flood plain of the Cedar River. 6). Does the proposal involve any discharges of waste materials to surface waters? If so, describe the type of waste and anticipated volume of discharge. No b. Ground Water: 1) Will groundwater be withdrawn, or will water be discharged to groundwater? Give general description, purpose, and approximate quantities of withdrawals or discharges, if known. No ground water will be withdrawn (with the exception of periodic monitoring well sampling). No water will be discharged to the ground water. 2) Describe waste material that will be discharged into the ground from septic tanks or other sources, if any (for example: Domestic sewage; industrial, containing the following chemicals . . .; agricultural; etc.). Describe the general size of the system, the number of such systems, the number of houses to be served (if applicable), or the number of animals or humans the system(s) is/are expected to serve. None. c. Water Runoff(including stormwater): 1) Describe the source of runoff (including stormwater) and method of collection and disposal, if any (include quantities, if known). Where will this water flow? Will this water flow into other waters? If so, describe. The proposed remediation system will not affect storm water flow patterns. If stormwater runoff accumulates in pipe trenches during construction, necessary accumulated water may be pumped from the trenches and disposed of off-site in accordance with applicable laws and regulations. 2) Will this project generate waste materials which, if not handled properly, could enter ground or surface waters? If so, generally describe. Excavation for placement of underground piping is not expected to encounter petroleum-contaminated soil because of the shallow depth of excavation (2 to 4 feet below the ground surface). Soil cuttings generated during drilling of air sparging and vapor extraction wells will likely encounter petroleum contaminated soil. The drill cuttings will be contained in 55-gallon DOT drums and transported off-site for disposal or recycling. d. Proposed measures to reduce or control surface water, groundwater, and runoff impacts, if any: Excavated soil will be placed temporarily on plastic sheeting. Straw bales or a soil berm will be placed around the stockpiles and plastic sheeting will cover the stockpile to prevent runoff. 4 4. PLANTS a. Circle types of vegetation found on the site and list specific species: X deciduous tree: alder, maple, aspen; other: X evergreen tree: fir, cedar, pine; other: X shrubs X grass pasture crop or grain wet soil plants: cattail, buttercup, bulrush, skunk cabbage; other: water plants: water lily, eelgrass, milfoil; other: other types of vegetation: b. What kind and amount of vegetation will be removed or altered? Small sections of grass and landscaping will be removed during piping installation. Grass and landscaping will be restored to existing condition. c. List threatened or endangered plant species known to be on or near the site. None known. d. Proposed landscaping, use of native plants, or other measures to preserve or enhance vegetation on the site, if any: Disturbed landscaping will be restored to existing condition. 5. ANIMALS a. Circle any birds or animals that have been observed on or near the site, or that are known to be on or near the site: birds: hawk, heron, eagle, songbirds; other: Not known mammals: deer, bear, elk, beaver; other: Not known fish: bass, salmon, trout, herring, shellfish; other: Not known b. List any threatened or endangered animal species known to be on or near the site. Not known. c. Is the site part of a migration route? If so, explain. Not known. d. Proposed measures to preserve or enhance wildlife, if any: None. 6. Energy And Natural Resources a. What kinds of energy (electric, natural gas, oil, wood stove, solar) will be used to meet the completed project's energy needs? Describe whether it will be used for heating, manufacturing, etc. Aboveground equipment will use existing electric power for operation. b. Would your project affect the potential use of solar energy by adjacent properties? If so, generally describe. No. c. What kinds of energy conservation features are included in the plans of this proposal? List other proposed measures to reduce or control energy impacts, if any: None. 5 7. Environmental Health a. Are there any environmental health hazards, including exposure to toxic chemicals, risk of fire, explosion, spill, or hazardous waste, that could occur as a result of this proposal? If so, describe. Air sparging will liberate volatile petroleum vapors in the subsurface. The purpose of the vapor extraction system is to collect, remove and treat the vapors. The vapor treatment unit exhaust will consist of 1,500 cfm of processed atmospheric air and carbon dioxide and water which result from the treatment of petroleum vapors. The vapor treatment unit (electric catalytic oxidizer) is designed to oxidize 99.5 percent of the petroleum vapors. The resulting quantity of petroleum hydrocarbons in the vapor exhaust will be less then 2 pounds per day. Vapor treatment unit operation and emissions will meet criteria established by Puget Sound Air Pollution Control Agency (PSAPCA). The remediation system is proposed to reduce the overall risk of exposure to hazardous substances in soil and ground water. However, the untreated vapors will vapor-phase petroleum hydrocarbons. No exposure to the untreated vapors is anticipated because the untreated vapors will be contained in piping and processing equipment. 1) Describe special emergency services that might be required (for example, chemical spills or explosions). Fire service, ambulance service could be required in the event of a fire or explosion. 2) Proposed measures to reduce or control environmental health hazards, if any: Vapor monitoring will be employed by the contractor during construction. Contractors working on this project will be meet OSHA and Washington L&I requirements for work on sites with hazardous substances. The purpose of the vapor extraction system and vapor treatment unit is to reduce and control emissions to the air and potential exposures via subsurface migration of petroleum vapors. A vapor monitoring program will be implemented to confirm that the vapor extraction system is effectively removing petroleum hydrocarbon vapors. The monitoring program will include regular measurements of combustible vapor concentrations in monitoring wells and residential crawl spaces and basements. Additionally, periodic sampling of indoor air will be performed to verify that residents are not exposed to volatile hydrocarbons generated by the air sparging system. Exhaust from the vapor treatment unit also will be tested on a regular basis to confirm that the catalytic oxidizer is operatingproperly. Treatment equipment will have safety features (automatic shutdown) to prevent exposure to untreated vapors. b. Noise 1) What types of noise exist in the area which may affect your project (for example: traffic, construction, or production equipment)? None expected. 2) What types and levels of noise would be created by or associated with the project on a short-term or a long-term basis (for example: traffic, construction, or production equipment)? Indicate the hours that noise would be generated by the site. Short-term noise may occur during 6 construction from operation of construction equipment. This work will be conducted during daylight hours Monday through Friday. System operation will produce noise from motors on air compressor and vacuum blower equipment. 3) Proposed measures to reduce or control noise impacts, if any: Construction work will take place during day light hours Monday through Friday. With respect to system operation noises, aboveground air sparging and vapor extraction equipment will be sound-proofed to reduce noise impacts. Further, if noise from full-time operation of the air sparging equipment is disruptive to residents, the system can be shut down during the night-time hours. The aboveground equipment will be situated inside a fenced enclosure and is not anticipated to be noticeable above background traffic noise during daylight hours. 8. Land and Shoreline Use a. What is the current use of the site and adjacent properties? The site is presently used as a community park (Maplewood Park) and utility right-of-way. Property to the north is unoccupied. Properties to the west and east of the site are residential. The property to the south of the site is undeveloped. b. Has the site been used for agriculture? If so, describe. No. c. Describe any structures on the site. Existing structures include the Olympic Pipe Line Company block valve enclosure and recreational features in Maplewood Park. d. Will any structures be demolished? If so, what? No structures will be demolished as a part of this proposal. e. What is the current zoning classification of the site? R-8. f. 'What is the current comprehensive plan designation of the site? Residential g. If applicable, what is the current shoreline master program designation of the site? Not applicable. h. Has any part of the site been classified as an "environmentally sensitive" area? If so, specify. None known. Approximately how many people would reside or work in the completed project? None. j. Approximately how many people would the completed project displace? None. k. Proposed measures to avoid or reduce displacement impacts, if any: None planned. I. Proposed measures to ensure the proposal is compatible with existing and projected land uses and plans, if any: None planned. Alterations in the park and surrounding right-of-way will be restored upon completion of construction. Once cleanup is completed aboveground components of the remediation system will be removed. 9. Housing a. Approximately how many units would be provided, if any? Indicate whether it would be high, middle, or low-income housing. Not applicable. b. Approximately how many units, if any, would be eliminated? Indicate whether it would be high, middle, or low-income housing. Not applicable. c. Proposed measures to reduce or control housing impacts, if any: Not applicable 10. ' Aesthetics a. What is the tallest height of any proposed structure(s), not including antennas or chimneys? 12 to 15 feet high 6-inch-diameter exhaust stack on the vapor treatment unit. b. What are the principal exterior building material(s) and colors proposed for the project? Chain linked fencing with slats will be used for the equipment enclosures. c. What is the proposed ratio of building coverage to lot size? Not applicable d. What views in the immediate vicinity would be altered or obstructed? No views will be altered or obstructed. e. Proposed measures to reduce or control aesthetic impacts, if any: None planned. 11. Light and Glare a. What type of light or glare will the proposal produce? What time of day would it mainly occur? The proposed project will not produce significant light or glare. b. Could light or glare from the finished project be a safety hazard, interfere with views, or affect wildlife? No. c. What existing off-site sources of light or glare may affect your proposal? None known. d. Proposed measures to reduce or control light and glare impacts, if any: No measures proposed. 12. Recreation a. What designated and informal recreational opportunities are in the immediate vicinity? Park activities including children's playground. basketball and baseball. b. Would the proposed project displace any existing recreational uses? If so, describe. No recreational uses will be permanently displaced. Some short term park closures may be needed during construction. 8 c. Proposed measures to reduce or control impacts on recreation, including recreation opportunities to be provided by the project or applicant, if any: Site area impacting park activities is minimal. 13. Historic And Cultural Preservation a. Are there any places or objects listed on, proposed for, or eligible for listing in national, state, or local preservation registers on or next to the site? If so, generally describe. None known. b. Generally describe any landmarks, or evidence of historical, archaeological, scientific, or cultural importance known to be on or next to the site. None known. c. Proposed measures to reduce or control impacts, if any: None planned 14. Transportation a. Identify public streets and highways serving the site, and describe proposed access to the existing street system. Show on site plans, if any. Southeast 6th Street. Southeast 5th Street, and Newport Avenue Southeast. b. Is site currently served by public transit? If not, what is the approximate distance to the nearest transit stop? Not known. c. How many parking spaces would the complete project have? How many would the project eliminate? None. None. The proposed project will not affect existing parking. d. Will the proposal require any new roads or streets, or improvements to existing roads or streets, not including driveways? If so, generally describe (indicate whether public or private). No new roads or streets or improvements to existing roads are planned. e. Will the project use (or occur in the immediate vicinity of) water, rail, or air transportation? If so, generally describe. No. f. How many vehicular trips per day would be generated by the completed project? If known, indicate when peak volumes would occur. No increase in vehicle trips to the site will occur as a result of this project. g. Proposed measures to reduce or control transportation impacts, if any: None planned. 15. Public Services a. Would the project result in an increased need for public services (for example: fire protection, police protection, health care, schools)? If so, generally describe: No increase in public services is anticipated for the completed project. b. Proposed measures to reduce or control direct impacts on public services, if any. None planned. 9 16. ; Utilities ' a. Identify existing utilities by name including: electricity, natural gas, water, refuse service, telephone, sanitary sewer, septic system; other: Existing utilities at the site include PSE electricity, natural gas, City of Renton water and refuse service, telephone and sanitary City of Renton sanitary sewer and storm drain. Additionally, an irrigation system exists in Maplewood Park. c. Describe the utilities that are proposed for the project, the utility providing the service, and the general utility construction activities on the site or in the immediate vicinity which might be needed. Connection to of aboveground equipment existing power and telephone will be completed by the contractor during system installation. SIGNATURE I, the undersigned, state that to the best of my knowledge the above information is true and complete. It is understood that the lead agency may withdraw any declaration of non- signiificance that it might issue in reliance upon this checklist should there be any willful misrepresentation of willful lack of full disclosure on my part. Proponent: � P i?; �`%�( L'(M ��.L n ,. Name Printed: . .�fl' ;'(I. P., C)L'1 fto Date: '51 " 1_3 P:\000to099\0894002\CheckList.doc 10 Cityof Renton Finance Department Request for Clai:.:� or Treasurer's Check q Date • Required Date of Request li-29-gg' a60-70 Requesting Department 1 flC ' Authorized Signature 1 L%�1l1� REASON FOR CHECK Deposit Refund Name 649,eee./Jeers' Amount /),000. 00 Finance Receipt No leg 9 535it Receipt Date R-/- 98 Otherfeee&A Describe Circumstances Requiring Issuance of Check: &1 iii rtn-i nlepd Zc,!'� R /614) Afar Q /ririG Plicte( Sole pot • CHECK PREPARATION INSTRUCTIONS 1Amount $ 1)Qoo1 00 Charge to Account(s). 660.3itc. �1 , 090I7 Payable To ro/1?3* E l/1G• Address Rio - 151tc:p• Are Ai ged/rmi W4 0 Mail Check to Payee Return to Dept: 41177 Soc Sec or IRS ID No 0 Other: . CHECK AUTHORIZATION - Finance Department Use Only Approved 1 Date 0 Claims 0 Treasurer's Check No: CTY006/7/89 • 1*************************************************************** City of Renton WA Reprinted: 09/29/98 09 :52 Receipt **************************************************************** Receipt Number: R9805850 Amount: -1, 000 . 00 09/29/98 09 :51 Payment Method: REFUND Notation: REFUND ENVIR FEE Init: LN Project #: LUA98-136 Type: LUA Land Use Actions Parcel No: 162305-9066 Site Address : 3330 SE 6TH ST Total Fees : 115 . 04 This Payment -1, 000 . 00 Total ALL Pmts : 115 . 04 Balance: . 00 **************************************************************** Account Code Description Amount 000 .345 . 81. 00 . 0007 Environmental Review -1, 000 . 00 **************************************************************** City of Renton WA Reprinted: 09/01/98 14 :44 Receipt **************************************************************** Receipt Number: R9805354 Amount: 1, 015 . 04 09/01/98 14 :44 Payment Method: CHECK Notation: #82788 GEOENGINC Init: LN Project #: LUA98-136 Type: LUA Land Use Actions Parcel No: 162305-9066 Site Address: 3330 SE 6TH ST Total Fees : 1, 015 . 04 This Payment 1, 015 . 04 Total ALL Pmts : 1, 015 . 04 Balance: . 00 **************************************************************** Account Code Description Amount 000 . 345 . 81 . 00 . 0007 Environmental Review 1, 000 . 00 000 . 05 .519 . 90 .42 . 1 Postage 15 . 04 \ 1 '� • .1 / / �, �(' I . ` I I / ' 1 ! L. (tl I' /4 • LI � /. -1 ,• II 1 I / I }J .. I / — 1 � , I- I � { • \��J ),I \," / r/, II 1. • s. r /I , / \ •J . \ > , , •\) \ ! 1 y i \ 1, '1 1 �_ ,,\ )( l I/ /, t I l ,- )71•( -- 1 t 1 - '' - % I „ !, / 1 I, 1 ' I ) _ II I 1 , I, - , \ / ik J•\ FINAL DRAFT �' t �, / ( i \' '' , , ' • Focused Gleanup•Actii'on Plan /, ', / J' I I '• andAir,Sparging Engineering Report` ' / / • r. \ f ` \ • ,•' Maplewood,Neighb©rhood-Historic Fuel ' 1 J • i ( \ I \ i . Release \ 1 — I\" i i' +` 1 i 1 ' l , c I y., Renton, Washington. . ,\ ( . - ' \ , _T • \ l r \ „. (, r r 4 \" ,August 11,,1998 - . ' ;' , i';• .-"JI Ft r r rr)r)1/1.t.(1 r-* I c.rt y ' - ''', - _', ' • /I `t r I /` (�\, 1 ` 1 1 I _, I , / \ l / i I- - r / _ ,I -,. / • \,___ - ,`</ -- t , iI • 1 \ .".•"' ,. 'I • , • - . // / i ( r. I , -1 , ' \ il, ; - I \ \ l; i tj \ / 1 I I ) 1„ 1 Fore - / }. ( 1 1 / / - - "Olympic Pipe Line-Comp' / ' . •' '' /i. , I I / -. , ) 'i 1�\ Y - , 1 • \ , ', '^ '/) \ ' — / / \ / \ ,' { , / •- ' I • • ; / • ) ) I I l. � - / I I -\ I. , 1 ,\ it / I _ 1 I , - t /i , ,` ( • - / - I i. . ' G e o E n g i n le e r s = 1 11 \` ) -•t / • - ,i I File No.0894-002-00/081198 I • - \. 1 ,, \ ( ' I I • I i; i ' /J •- J , \_ \ - ! I, - -- ,/ ( I I li. FINAL DRAFT Geo Engineers August 11, 1998 Consulting Engineers and Geoscientists Offices in Washington, Olympic Pipe Line Company 2319 Lind Avenue Southwest Oregon,and Alaska Renton, Washington 98057 Attention: Sandy Conlan We are submitting four copies of our "Focused Cleanup Action Plan and Air Sparging Engineering Report, Maplewood Neighborhood Historic Fuel Release, Renton, Washington, for Olympic Pipe Line Company." This document was requested by representatives of the Washington State Department of Ecology (Ecology) and the City of Renton on May 14, 1998. The scope of this document is generally consistent with the scope presented in the Model Toxics Control Act, Washington Administrative Code 173-340-360 and 173-340-400. Monitoring and remediation of residual fuel hydrocarbons in the Maplewood neighborhood is being conducted by Olympic Pipe Line Company under Ecology's Voluntary Cleanup Program (VCP). We appreciate the opportunity to be of continued service to OPLC. Please call if you have questions regarding this report. Yours very truly, GeoEngineers, Inc. _ Zjetie?.. 6,_4/ez James A.Miller Principal DLC:JAM ja p:\000to099\0894002\\0894002cap.doc 'cc: Carolyn Boatsman(3 copies) City of Renton Norm Peck Washington State Department of Ecology -, GeoEngineers,Inc. 8410 154th Avenue N.E. Redmond,WA 98052 Telephone(425)861-6000 Faxi(425)861-6050 www.geoengineers.com • • -Printed on recycled paper. FINAL DRAFT CONTENTS Page No. EXECUTIVE SUMMARY INTRODUCTION ES-1 SITE CONTAMINANT CONDITIONS ES-1 POTENTIAL GROUND WATER EXPOSURE PATHWAYS ES-2 REMEDIAL ALTERNATIVES ES-2 General ES-2 Hot Spot Soil Excavation ES-2 Air Sparging ES-3 Monitored Natural Attenuation ES-3 PREFERRED ALTERNATIVE ES-4 RECOMMENDATION TO FULLY ASSESS RISK TO CITY OF RENTON DRINKING WATER SUPPLY ES-4 TABLES Table No. Description and Comparative Review of Remedial Options ES-1 FIGURES Figure No. Petroleum Hydrocarbon Concentrations in Soil, April & May 1998 ES-1 Ground Water Dissolved TPH Plume ES-2 FOCUSED CLEANUP ACTION PLAN 1.0 INTRODUCTION 1 2.0 SITE CONDITIONS 1 2.1 LOCATION AND SITE DESCRIPTION 1 2.2 1986 TO 1993 ASSESSMENT AND REMEDIATION PROGRAM 1 2.3 1997 AND JANUARY 1998 MONITORING 3 2.4 APRIL THROUGH JUNE 1998 SUBSURFACE EXPLORATIONS 3 2.4.1 April 1998 Sampling and Explorations 3 2.4.2 May1998Subsurface and June Subsu face Explorations 4 2.4.3 Soil Field Screening and Chemical Analyses. 5 3.0 NATURE AND EXTENT OF CONTAMINATION 6 3.1 AREAS OF RESIDUAL PETROLEUM 6 3.1.1 Ground Water 6 3.1.2 Soil 6 3.1.3 Total Mass of Residual Petroleum 7 3.2 REVIEW OF POTENTIAL EXPOSURE PATHWAYS 7 3.2.1 Soil to Ground Water Pathway 7 3.2.2 Inland Ground Water to Surface Water Pathway 7 3.2.3 Soil/Ground Water to Vapor Inhalation Pathway 8 3.2.4 Soil Direct Contact Pathway 8 4.0 SUMMARY OF CLEANUP STANDARDS 8 4.1 INDICATOR HAZARDOUS SUBSTANCES AND CLEANUP LEVELS 8 G e o E n g i n e e r s i File No. 0894-002-00/081198 CITY OF RENTON irkA ter: Planning/Building/Public Works Department Jesse Tanner,Mayor Gregg Zimmerman P.E.,Administrator RENTOPI1RJCLBRARY August 10, 1998 R"CFPFP(IF ()NI SUBJECT: PROPOSED CLEANUP ACTION PLAN Dear Maplewood Resident, A public meeting will be held on August 20, 1998 from 7pm to 9pm at the Carco Theater. The theater is located next to the Renton Community Center at 1715 Maple Valley Highway. The purpose of the meeting is to provide an opportunity for the Olympic Pipe Line Company(OPLC)to inform Maplewood residents of the steps that will be taken to clean up the petroleum in soil and groundwater beneath the Maplewood neighborhood. Residents will have an opportunity at the meeting to learn about the goals, impacts, and benefits of the clean up. OPLC, GeoEngineers, Inc., Department of Ecology, and City staff will be on hand to respond to your questions and take your comments. The Cleanup Action Plan, described in the attached fact sheet, has been prepared by GeoEngineers on behalf of OPLC. The City and the Washington Department of Ecology support the proposed plan; Complete copies of the plan are available at several locations should you wish to review it(see locations in fact sheet). We reported to you in late May that a pilot test of the air sparging method of clean up would be conducted in June. This test was completed and it was found that sufficient concentrations of dissolved oxygen could be injected into the soil to create conditions that are favorable for biological break down of petroleum. Further information about air sparging is provided in the attached fact sheet. Maintaining good communication with the affected public is a very important element of a successful clean up program. We look forward to meeting with residents to discuss the proposed clean up plan. Should you have questions at any time regarding the contamination or cleanup, please contact Sandy Conlan with OPLC(425-227-5209)or Carolyn Boatsman,City of Renton Water Utility(425-430-7211). Sincerely, Gregg erman,Administrator Planning,Building,Public Works Department Dan Yount,Enviro ental/Regulatory Affairs Olympic Pipe Line Company cc. Mayor Jesse Tanner • Renton City Council 200 Mill Avenue South- Renton, Washington 98055 ®This paper contains 50%recycled material,20%post consumer • OLYMPIC PIPE LINE COMP Y.r e s IwiL0..1 mpic. �� 2319 LIND AVE.S.W. P.IVELINE• P.O.BOX 1800 COMVANV RENTON,WASHINGTON 98057 (425)235-7736 DFUUTfMI RJR' it LIBRARY OLYMPIC PIPE LINE COMPANY MAPLEWOOD NEIGHBORHOOD HISTORIC FUEL RELEASE Final Draft Cleanup Action Plan Now Available for Review Public Meeting Sponsored by the City of Renton and Olympic Pipe Line Company to be held on August 20, 1998, 7 to 9 pm, Carco Theater, 1715 Maple Valley Highway I Background Olympic Pipe Line Company (OPLC) in cooperation with the Washington State Department of Ecology (Ecology) responded to an underground fuel spill that was discovered in the Maplewood neighborhood in early October 1986. An estimated 80,000 gallons of mixed gasoline, diesel and jet fuel were released at the location of OPLC's block valve. Site characterization was performed to evaluate soil vapor and ground water conditions throughout the neighborhood. An intensive 18-month remediation program consisting of ground water pumping, floating petroleum recovery and soil vapor extraction (SVE) was undertaken by OPLC beginning in early 1987. With the concurrence of Ecology, active remedial measures at the site were terminated on May 18, 1988. The 1987/1988 remedial action recovered an estimated 650 gallons of liquid fuel by pumping, treated about 1,550 gallons of hydrocarbons from the ground water, and removed and incinerated approximately 30,000 gallons of fuel vapor. An additional 37,000 gallons of fuel is estimated to have been biodegraded by natural processes between 1986 and the present. The remedial program was followed by a ground water and soil vapor monitoring program to observe sulisurface conditions following shutdown of the remediation systems in the Maplewood neighborhood. Based on an observed decrease in contaminant concentrations, Ecology approved reducing the frequency and scope of the monitoring activities in March 1989 and monitoring was terminated in 1993. The cleanup conducted in 1987/1988 and subsequent monitoring performed met the standard of practice for cleanups conducted at that time. • Promulgation of MTCA Washington State's Model Toxics Control Act (RCW 70.105D), the state cleanup law, was promulgated in 1988 and became effective in March 1989. MTCA regulations (Chapter 173-340 WAC) which establish criteria for soil and ground water cleanup levels, were first published in 1990 -- almost two years after OPLC's remediation efforts in the Maplewood area were shut down. The standard of practice for environmental assessment and cleanup evolved over the next several years following promulgation of the new law. • Current Status After a request from the Seattle-King County Health Department, current ground water quality in the Maplewood neighborhood was evaluated in late 1997 using MTCA standards. Comparison with MTCA standards indicated that weathered gasoline- and diesel-range petroleum hydrocarbons, residual from the 1986 fuel release, were present at concentrations greater than MTCA Method A cleanup levels. The current plume of dissolved-phase petroleum hydrocarbons in ground water is approximately 1,200 feet long) in the direction of the ground water gradient (to the southwest). Gasoline- and diesel-range hydrocarbons are present in soil surrounding the block valve and within the central area of the plume between depths of about 11.5 to 15 feet below ground surface(bgs) at the upgradient margin of the plume and 18 to 20 feet bgs at the downgradient margin of the plume. No free liquid petroleum is known to be present within the study area. Based on soil and ground water chemical analytical data and the estimated areas of residual soil contamination, an approximate mass of 10,000 gallons of petroleum originating from the 1986 OPLC block valve release remains in the subsurface. More than 99 percent of the residual is presently adsorbed to soil; the remaining less than 1 percent is currently dissolved in ground water. It now appears that part of the reason that dissolved petroleum concentrations decreased enough to consider ending monitoring in 1993 is that groundwater subsided to a level below the contaminated soil. The shallow groundwater has now moved back up and contacted the contaminated soil, causing dissolved concentrations of petroleum to increase. Drinking water and surface water resources are not currently at risk for contaminants originating from the OPLC block valve release. This includes the Cedar River and the nearby City of Renton well fields downtown and at the Maplewood Golf Course. Preferred Alternative for Remedial Action OPLC has entered Ecology's Voluntary Cleanup Program (VCP) and will conduct additional remedial action to attain a No Further Action (NFA) status determination from Ecology for the site. To achieve this end, OPLC proposes installation of an air sparging remediation system to treat residual petroleum in soil and ground water. The proposed technology is notably different from the soil vapor extraction technologies employed in 1987 and 1988. Air sparging involves controlled injection of air below the water table to treat residual volatile and biodegradable hydrocarbons in ground water and soil in the water table zone. The relatively permeable soil,types beneath the site are favorable for air sparging. The air sparging system would consist of about 20.vertical air sparging wells situated within the block valve area, Southeast 5th Street, Maplewood Park, and the east side of Newport Avenue Southeast. The wells would be connected via underground piping to air compressors situated in two small equipment enclosures: one within Maplewood Park and one in OPI✓C's block valve enclosure. Compressed air would be delivered via underground piping between the compressors and wells. Volatile hydrocarbon vapors, expected during the initial phases of sparging, will be collected through a subsurface vapor recovery trench. Recovered vapors would be routed to a vapor treatment unit. Construction of the air sparging system would take approximately one month and would include installation of subsurface air sparging wells, placement of underground piping between the recovery wells, and installation of aboveground treatment equipment. This construction may cause temporary inconveniences such as occasional construction equipment noise and temporary lane closures. Sound-proofing will be used and the system will be turned off at night to minimize compressor noise. The system would operate for 1 to 3 years,until cleanup levels are met in soil and ground water. Schedule Final Draft Cleanup Action Plan Available for Review: August 14 through September 30, 1998 Public Meeting: August 20, 1998 Proposed Air Sparging System Construction: October 1998 Proposed Air Sparging System Duration: 1 to 3 years Long-Term Monitoring: 1 to 5 years following system shut-down Review Final Draft Cleanup Action Plan at: Renton City Hall Public Works Department 1055 Grady Way City irof Renton Library 100 Mill South Ecology Northwest Regional Office 3190 160th Avenue Southeast,Bellevue Questions? Call: Olympic Pipe Line Company Sandy Conlan,425-227-5209 Department of Ecology,Toxics Cleanup Program Norm Peck,VCP Site Coordinator 425-649-7047 City of Renton Public Works Department Carolyn Boatsman,425-430-7211 FINAL DRAFT 4.2 POINTS OF COMPLIANCE 9 ' 4.3 ARARS 9 5.0 DESCRIPTION AND REVIEW OF CLEANUP OPTIONS 9 5.1 OVERVIEW AND MTCA REMEDY SELECTION CRITERIA 9 5.2 GENERAL DESCRIPTION OF OPTIONS 9 5.2.1 Hot Spot Soil Excavation 9 5.2.2 Air Sparging 10 5.2.3 Monitored Natural Attenuation 11 5.3 COMPLIANCE MONITORING 12 6.0 RATIONALE FOR SELECTION OF THE CLEANUP ACTION 12 6.1 PROTECTION OF HUMAN HEALTH AND ENVIRONMENT 12 6.1.1 Hot Spot Soil Excavation 12 6.1.2 Air Sparging 12 6.1.3 Monitored Natural Attenuation 12 6.2 ATTAINMENT OF STANDARDS 13 6.2.1 Hot Spot Soil Excavation 13 6.2.2 Air Sparging 13 6.2.3 Monitored Natural Attenuation 13 6.3 LONG-TERM EFFECTIVENESS 13 6.3.1 Hot Spot Soil Excavation 13 6.3.2 Air Sparging 13 6.3.3 Monitored Natural Attenuation 13 6.4 COMPLIANCE WITH ARARS 14 6.5 COMPLIANCE MONITORING 14 i 7.0 PREFERRED ALTERNATIVE AND RECOMMENDATIONS 14 7.1 PREFERRED ALTERNATIVE 14 7.2 RECOMMENDATION TO FULLY ASSESS RISK TO CITY OF RENTON DRINKING WATER SUPPLY 14 8.0 SCHEDULE 14 '9.0 PUBLIC NOTICE AND PUBLIC COMMENT 14 AIR SPARGING ENGINEERING REPORT 15 .10.0 INTRODUCTION AND BACKGROUND 15 10.1 GENERAL 15 10.2 CLEANUP LEVELS 15 10.3 FOCUSED CAP REMEDIAL ACTION 15 11.0 SCHEDULE 15 11.1 PERMITS 15 11.2 FINAL DESIGN AND CONSTRUCTION 15 12.0 CONCEPTUAL PLAN OF AIR SPARGING REMEDIAL OPTION 16 12.1 GENERAL 16 12.2 AIR SPARGING WELLS AND PIPING 17 12.3 VAPOR MITIGATION 18 12.4 ABOVEGROUND EQUIPMENT AND EQUIPMENT ENCLOSURES 18 G e o E n g i n e e r s ii File No. 0894-002-00/081198 FINAL DRAFT • 13.0 CONCEPTUAL DESIGN CRITERIA 19 13.1 JUNE 1998 AIR SPARGING PILOT TEST 19 13.1.1 AS-1 Installation 19 13.1.2 Objectives 19 13.1.3 Overview of Pilot Test 19 13.1.4 Data Interpretation 21 13.2 ENGINEERING JUSTIFICATION: AIR SPARGING 23 13.2.1 Design Criteria, Assumptions and Calculations 23 13.2.2 Selected Treatment Option Containment Efficiencies 24 13.2.3 Documentation of Effectiveness 24 13.2.4 Demonstration of Compliance with Cleanup Requirements 24 14.0 SPILL CONTROL AND DESIGN SAFETY MEASURES 25 14.1 CONTAINMENT STRUCTURES AND LEAK DETECTION 25 14.2 RUNOFF AND EROSION/SEDIMENT CONTROLS 25 14.3 LEVEL SENSORS AND SHUTOFFS 25 14.4 START UP TESTING 25 14.5 SYSTEM AS-BUILTS 25 t ` 14.6 DESIGN SAFETY 25 15.0 RESIDUALS MANAGEMENT 26 16.0 SITE-SPECIFIC CHARACTERISTICS AFFECTING DESIGN/CONSTRUCTION 26 16.1 SURFACE FEATURES 26 16.1.1 Site Access 26 16.1.2 Probability of Flooding 26 16.1.3 Seismic and Slope Stability 26 16.1.4 Probability of Wind Storm Damage 27 16.1.5 Temperature Extremes 27 16.1.6 Precipitation 27 16.1.7 Local Planning and Development Issues 27 16.2 OTHER FEATURES 27 16.2.1 Soil • , 27 16.2.2 Surface Water 27 16.2.3 Ground Water 27 16.2.4 Air Quality Attainment Area Status 28 ,17.0 CONSTRUCTION TESTING/QUALITY CONTROL 28 17.1 SOIL SAMPLING DURING AIR SPARGING WELL DRILLING 28 17.2 COMPLIANCE WITH DESIGN 28 17.3 PRESSURE TESTING FOR AIR SPARGING AND VAPOR RECOVERY PIPING 28 17.4 START UP TESTING 29 18.0 COMPLIANCE MONITORING 29 18.1 AIR SPARGING SYSTEM AND VAPOR RECOVERY MONITORING 29 18.2 CONFINED SPACE VAPOR MONITORING 29 I 18.3 GROUND WATER CONFIRMATIONAL MONITORING 29 18.4 SOIL CLEANUP CONFIRMATION MONITORING 30 18.5 PROPOSED EVALUATION CRITERIA FOR TERMINATION OF AIR SPARGING 30 19.0 HEALTH AND SAFETY CONSIDERATIONS 31 19.1 SITE SAFETY PLAN 31 19.2 PROTECTION MONITORING DURING REMEDIAL ACTIVITIES 31 19.3 CONSTRUCTION PROCEDURES PERTINENT TO HEALTH AND SAFETY 31 G e o E n g i n e e r s iii File No. 0894-002-00/081198 FINAL DRAFT TABLES Table No. Summary of Ground Water Monitoring Wells Chemical Analytical Data 1 Summary of Soil Field Screening and Chemical Analytical Results— May 1998 Borings 2 Ground Water Elevation Data 3 Summary of Applicable, Relevant and Appropriate Requirements - 4 Comparative Review of Remedial Options 5 Summary of Air Sparging Pilot Test Pressure and Flow Rates, AS-1 6 Summary of Air Sparging Data in Observation Monitoring Wells 7 Summary of Ground Water Chemical Analytical Results: Two Weeks Before, During and Following Air Sparging Test 8 FIGURES Figure No. Vicinity Map 1 Site Plan 2 Enlarged Area of Detail 3 Cross Section A-A' 4 Cross Section B-B' 5 Petroleum Hydrocarbon Concentrations in Soil, April and May 1998 6 Ground Water Dissolved TPH Plume 7 Schedule 8 Air Sparging Wells and Piping Layout 9 Proposed Air Sparging System Construction Details 10 Proposed Air Sparging System Conceptual Flow Schematic 11 Air Sparging Injection Flow Rate and Pressure (AS-1) 12 Ground Water Elevations: MW-38 and MW-43 13 Ground Water Elevations: Other Wells 14 - Ground Water Dissolved Oxygen Concentrations—Sparging Conditions 15A Ground Water Dissolved Oxygen 15B MW-43 Well Casing Airspace: Air Sparging Test 16 MW-38 Well Casing Air Space: Air Sparging Test 17 Vapor Concentrations in Monitoring Wells During Air Sparging 18 TPH Concentrations Before, During and After Air Sparging 19 APPENDICES Page No. Appendix A-May 1998 Field Exploration Program A-1 General A-1 Drilling and Soil Sampling A-1 Field Screening of Soil Samples A-1 Well Construction A-2 APPENDIX A FIGURES Figure No. Soil Classification System A-1 Key to Boring Log Symbols A-2 Logs of Monitoring Wells A-3 ... A-10 MW-18, MW-19, MW-20 (1986 Boring Logs) G e o E n g i n e e r s iV File No. 0894-002-00/081198 FINAL DRAFT !Appendix B -Chemical Analytical Program B-1 Analytical Methods B-1 Analytical Data Review B-1 Analytical Data Review Summary B-1 Chemical Analytical Data B-2 ... B87 Appendix C- Use of Interim TPH Policy C-1 Interim TPH Policy Evaluation For Petroleum In Soil C-1 General C-1 • Evaluation Of Soil Direct Contact Risk C-1 MTCA Method B Soil Cleanup Level Based On Direct Contact C-2 Evaluation Of Soil To Ground Water Risk C-2 Interim TPH Policy Methods C-3 Toxicity C-3 Fate And Transport C-4 APPENDIX C TABLES Table No. Residential Hazard Index and Carcinogenic Risk for Direct Contact— Sample AS-1-13.5 VPH/EPH Data C-1 Comparison of VPH/EPH Data, Hazard Indices and Resulting MTCA— Method B Cleanup Level Calculations C-2 MTCA Method B Soil Cleanup Level Calculations Based On Residential Direct Contact (Sample AS-1-13.5) C-3 Projected TPH Concentration in Ground Water Soil-to-Ground Water Partitioning Using Raoult's Law—VPH and EPH Data for Sample AS-1-13.5 C-4 Appendix D-Design Calculations for Air Sparging Remedial Option D-1 Minimum Air Injection Pressure D-1 Rate of Volatiles (TPH) Generation in Soil and Ground Water D-1 { Rate of Volatiles (TPH) Generation in Soil and Ground Water D-2 i-- � I G e o E n g i n e e r s V File No. 0894-002-00/081198 i � FINAL DRAFT EXECUTIVE SUMMARY FOCUSED CLEANUP ACTION PLAN AND AIR SPARGING ENGINEERING REPORT MAPLEWOOD NEIGHBORHOOD HISTORIC FUEL RELEASE RENTON, WASHINGTON FOR OLYMPIC PIPE LINE COMPANY INTRODUCTION This focused Cleanup Action Plan(CAP) describes three options for management of residual subsurface petroleum contamination in the vicinity of Olympic Pipe Line Company's (OPLC) !block valve in the Maplewood Neighborhood of Renton,Washington: 1) Hot Spot Soil Excavation 2) Air Sparging 3) Monitored Natural Attenuation The specific elements comprising each option are presented along with a comparison of the 'benefits and limitations of each option. The focused CAP identifies the preferred option and a proposed schedule for implementing the preferred option. The associated Engineering Report describes the conceptual design, assumptions and construction specifications for the preferred !alternative. SITE CONTAMINANT CONDITIONS Site characterization studies at the OPLC Maplewood block valve site indicate that weathered !gasoline- and diesel-range petroleum hydrocarbons are present in ground water and in soil within the zone of water table fluctuation (Figures ES-1 and ES-2;in Executive Summary). The petroleum hydrocarbons in the subsurface originated from a fuel leak at the OPLC block valve that occurred in about 1985. The release was discovered in October 1986. Based on current ground water monitoring data, the plume of dissolved-phase petroleum hydrocarbons in ground water (at concentrations greater than the Model Toxics Control Act [MTCA] Method A cleanup levels) is approximately 1,200 feet long in the direction of the ground water gradient(to the southwest). The plume width is a maximum of about 350 feet at the downgradient margin of the plume. The highest total petroleum hydrocarbon (TPH) concentrations are generally in the central portion of the plume with TPH (sum of gasoline- and diesel-range) concentrations in ground water between about 2 and 30 milligrams per liter (mg/1). • Gasoline- and diesel-range hydrocarbons are present in soil surrounding the block valve and !within the central area of the plume between depths of about 11.5 to 15 feet below ground surface (bgs) at the upgradient margin of the plume and 18 to 20 feet bgs at the downgradient margin of the plume.No LNAPL(free liquid petroleum)is known to be present within the study area. G e o E n g i n e e r s ES-1 File No. 0894-002-00/081198 ti FINAL DRAFT POTENTIAL GROUND WATER EXPOSURE PATHWAYS The City of Renton operates several public water supply wells within about 1.5 miles of the site, including the downtown well field situated 1.5 miles west of the site, and the Maplewood golf course well field approximately'/4-mile east of the site. Past history of the Maplewood fuel spill and aquifer modeling by the City of Renton indicate that the downtown well field is not at risk from the Maplewood fuel leak. The upgradient golf course wells pump ground water from a deep aquifer situated between 200 and 400 feet below grade. Information obtained from studies in the area suggest that shallow ground water in the Vicinity of the OPLC Maplewood block valve would not migrate to the golf course wells during pumping conditions. However, empirical data and/or modeling from a pumping test are needed to confirm this. Ground water beneath the site discharges to the Cedar River. Petroleum contaminants were not detected in ground water samples obtained from monitoring wells situated between the northern bank of the Cedar River and the plume. Therefore, it appears that the plume attenuates by natural processes before discharging to the Cedar River. The dissolved plume is expected to continue to shrink over time. - REMEDIAL ALTERNATIVES General Three options are identified for management of residual subsurface petroleum contamination in the vicinity of OPLC's block valve in the Maplewood Neighborhood of Renton, Washington: 1) Hot Spot Soil Excavation 2) Air Sparging 3) Monitored Natural Attenuation These alternatives are described more fully in Section 5.2 of the focused CAP. Table ES-1 in this Executive Summary presents a description and comparison of the remedial options. Hot Spot Soil Excavation The basic concept of hot spot excavation is to remove the "source" of contamination to ground water: the residual petroleum-contaminated soil in closest proximity to the original release. "Hot spot" removal of accessible petroleum-contaminated soil would occur in the immediate vicinity of the block valve enclosure in the OPLC utility easement north of Southeast 5`� Street. Soil excavation is not proposed beneath Southeast 5`h Street, Maplewood Park, other nearby city streets or private property, for practical and logistical reasons as described in more detail below. This option would involve excavation of approximately 3,000 cubic yards of pnoncontaminated overburden and approximately 1,500 cubic yards of petroleum-contaminated soil from the water table zone, at depths ranging from about 10 to 15 feet bgs. The contaminated soil would be transported off-site by trucks to a treatment facility or.landfill. Temporary dewatering likely would be needed to access contaminated soil, depending on the time of year G e o E n g i n e e r s ES-2 File No. 0894-002-00/081198 FINAL DRAFT excavation is conducted and seasonal ground water levels. Temporary shoring would be needed for effective excavation adjacent to Southeast 5th Street and to protect the existing OPLC block valve vault and pipelines. Excavation within private property is not proposed because it would require acquisition.of access agreements and could not be completed effectively on residential property without removal of some residential structures. Soil excavation is very disruptive in the short term and would be a major inconvenience, although temporary, to residents. Excavation of residual contaminated soil in Maplewood Park is also not proposed because of the numerous utilities in this area, including active fuel pipelines. Furthermore, excavation in the park would be a major inconvenience to park users. Similarly, excavation beneath street right-of-way would interfere with active utilities and street use. For these reasons, widescale excavation of residual soil is considered not practical. Air Sparging Air sparging is a technically feasible remedial technology for this site and is a different approach than the ground water and vapor recovery techniques applied at the site in 1987/1988. Air sparging involves controlled injection of air below the water table to treat residual volatile and biodegradable hydrocarbons in ground water and soil in the water table zone. The relatively permeable soil types beneath the site are favorable for air sparging. The air sparging system would consist of a series of vertical air sparging wells located within the block valve area, Maplewood Park and the nearby public rights of way (sidewalks). The wells would be connected via underground piping to air compressors situated in equipment enclosures within the Park and near the block valve site. Compressed air would be delivered via underground piping between the compressor(s) and well(s). The air sparging system above- ground equipment will be sound-proofed to the extent possible. Additionally, the system would not operate during nighttime hours to reduce noise inconvenience to nearby residents. Volatile hydrocarbon vapors, expected during the initial phases of sparging, would be collected through reactivated vapor recovery trench VRS-1. Recovered vapors would be routed to a vapor treatment unit(carbon or oxidizer) situated within the block valve enclosure. If VRS-1 is not completely effective in capturing vapors liberated by air sparging, it may become necessary to install vertical vapor recovery wells in some areas. Monitored Natural Attenuation Ground water and vapor monitoring of existing wells would continue in accordance with the current monitoring programs or as modified in the future by OPLC with concurrence from Ecology and/or the City of Renton. Ground water and vapor monitoring would be evaluated to confirm that conditions do not pose a risk to possible receptors. The rationale for this option is as follows: G e o E n g i n e e r s ES-3 File No. 0894-002-00/081198 FINAL DRAFT • Natural attenuation of the ground water plume already is occurring at the site, as indicated by the reduction in dissolved hydrocarbon concentrations between the central portion of the plume and the Cedar River. The dissolved-phase plume will continue to attenuate over time by biodegradation processes. '• Ground water monitoring data indicate that dissolved hydrocarbons are not currently entering the Cedar River. • An upward ground water gradient exists in the block valve and plume areas. Given the distance between the City of Renton pumping wells and the block valve site, it is possible that contaminants originating from the OPLC release cannot migrate into the deeper aquifer even during pumping conditions. A pump test is needed to further evaluate this condition. • The cost of conducting additional remedial action may not be warranted if there is no risk to , receptors. '• The air sparging remedial action will result in liberation of vapor-phase hydrocarbons and will pose greater relative environmental risk than monitoring only. PREFERRED ALTERNATIVE The preferred alternative proposed by OPLC is Air Sparging. The basis for this preference is ithe relatively favorable cost-benefit ratio as indicated in Table ES-1 and the ability to achieve ground water cleanup targets in a reasonable time frame. The Engineering Report presents the conceptual design, assumptions and construction specifications for the air sparging remedial option. At this time, the air sparging system design has been completed to about the 70 percent level. The final remedy selection and design will occur following input and comments on this CAP from the City of Renton,Ecology, and residents of the Maplewood Neighborhood. RECOMMENDATION TO FULLY ASSESS RISK TO CITY OF RENTON DRINKING WATER SUPPLY We recommend that the City of Renton conduct a pumping test of the City's wells in the Maplewood Golf Course to assess actual risk to ground water and receptors. We recommend a minimum pumping test duration of 7 days utilizing all of the_golf course pumping wells. The objective of the pumping test would be to confirm that dissolved phase hydrocarbons originating from the OPLC block valve release could not migrate to the City of Renton wells during pumping 'conditions. Ground water levels can be measured in OPLC monitoring wells, including MW-42 Shallow,MW-42 Deep and AS-1,during the test. ij IG e o E n g i n e e r s ES-4 File No. 0894-002-00/081198 TABLE ES-1 (Page 1 of 2) . 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' '' '> a iiingi ERMMI ' _______ 2 y 5? a>'S'Sr% >�f'' '>' ` > > i::#?'?:':'' ' > y` < ;; ::>:: ! :b .:.:.:.... a . s ": :tree........ .a"r!i .:...::!" r ,r ab as , t s a Jd..a.tr� s.artad t t t . a... :.ar...�rrdf.....:...:................. ..................... ..................................... . ................ . ........ .......... . ...:... ................ .. .... ......... ..... ............. .. :..... ...... :. .wale..t. .le.�vne,...7tte... .ntam.na.ed.ar..w f./. n if.sde.b..truak.....a.a........men.f.. . ........... . ............ . ...:...............................,................................................:..................... .. • Provides source(e.g.contaminated soil) removal • Approximate cost of cleanup action: $500,000 • Ground water quality immediately downgradient of • No excavation is proposed beneath city streets or • Temporary shoring and dewatering will be needed in a portion of the area with highest residual • Estimated mass of hydrocarbon removed: 12,000 the block valve would be expected to improve private property;however,truck traffic(about 7 for effective excavation near Southeast 5'Street concentrations in soil. In general,source removal pounds(estimated based on excavation volume) faster compared to the natural attenuation option. trucks per day for about 15 days Monday to and the existing fuel pipelines. is the considered most effective remedial • Cost/Benefit Ratio: $42 per pound of Nevertheless,it would likely be 10 or more years Friday)would temporarily inconvenience • Residual petroleum in soil will remain beneath approach. hydrocarbon removed before TPH concentrations in ground water are neighborhood residents and businesses. Southeast 5"Street and other areas with residual • Duration of action: less than 1 year less than MICA Method A cleanup levels • Odors from soil handling and excavation • soil contamination. • Estimated mass of residual hydrocarbon throughout the entire plume area. equipment noise would temporarily inconvenience • Long-term ground water monitoring would • remaining after cleanup action:63,000 pounds residents near the block valve area. continue after remedial excavation. • Estimated years of long-term monitoring following • Temporary lane closures in Southeast 5"Street • cleanup action: 10 to 15 years near the block valve would likely be necessary. • • Cost of 15 years long-term monitoring: $330,000 ' (present value in 1998 dollars) Note: Residual hydrocarbons remaining after the cleanup action will naturally degrade over time. • >:;.::': ;<::>:;>::: :*:•:•:»a ;>:•>.>::::;.,:>:,:'> :;::•:><:.r:.d.:. :•;r:•>>:::•.::: :: �:.:;<:ro`.;>.::d>.<a>::.::.•::><.>:; . 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Y.............::::::..... .....................................................:%0:............................P...P..................P....t ..9...Y....................:.............................................................P....�>?9.. , ; <. :: da a .. �t�dGovs:•':�f:ll et�ad::va....rs.�vbtitc� :aftiart`"'a'; ';:r�activatin th9f. rmarva:orra�rnr. .t h..V1�S r .........e s t s: va. a oad�'a and. a:risarb ; trbtla hts:af:wa. et .ry JC<s... • w 11 .sltr�atgd:rvrttiln.!r..61ack:aal. .area.JVt i.w rtc .� . . .r� ..... .. .... ........... ............. .. :...........:.:::::::::.::::::.:::::..::::::.:::.......:.:..::...:::.:.:.:.:.:..:,...:.:.:..:.... • Soil conditions and depth to ground water are • Approximate cost of cleanup action: $430,000 • System design,permitting and installation can be • Air sparging will liberate vapor-phase volatile. . • Long-term ground water monitoring would favorable for this technology. • Estimated mass of hydrocarbon removed: 60,000 completed in about 4 months. hydrocarbons and thus poses a potential risk to continue after the system operation is shut down. • Involves source treatment. . pounds (estimated based on treatment rates) • System operation would continue for 1 to 3 years; receptors that does not exist under"no action" • Injection of air should also enhance the rate of • Cost/Benefit Ratio: $7 per pound of hydrocarbon at the completion of the operating lifetime,ground conditions. This risk can be reduced and biodegradation of hydrocarbons,if any,in the removed water is expected to be in compliance with MICA managed by the use of vapor recovery systems; vadose zone. • Duration of action: 1 to 3 years Method A cleanup levels throughout the plume. however,the risk cannot be eliminated. • Estimated mass of residual hydrocarbon • Vapor monitoring would be conducted to confirm remaining after cleanup action:15,000 pounds that hydrocarbon vapors do not pose a health risk • Estimated years of long-term monitoring following to residents. cleanup action:3 to 5 years • Construction of the air sparging system will • Cost for 5 years long-term monitoring: $135,000 necessitate temporarily closing Maplewood Park • (present value in 1998 dollars) to public use for about 1 month to install wells and Note: Residual hydrocarbons remaining after the subsurface piping and equipment enclosure. The • cleanup action will naturally degrade over time. park sprinkler system will likely need to be removed and replaced during this time. • Flush-mounted or buried concrete-and metal- . covered wellheads and vaults,and the equipment enclosure in Maplewood Park could pose an • inconvenience to park users for the duration of • system operation. • Operation of air compressors and treatment equipment could pose a noise inconvenience to _ ___ • residents nearby the equipment enclosures. -- - • • Short-term closures of Southeast 5th Street in the area of the block valve may be necessary. TABLE ES-1 (Page 2 of 2) • • Technical Feasibility I Benefits and Cost Restoration Time Frame Disruption to Neighborhood/Other Risks I Other Comments •140.ilitotedNiittioilii;Aitenotitititi4i0eolinetiow.tot 4i.id.iici.iiipom.onit.6.ongitt:oxteltimw.o/OmOuldi4OrittiVe.:4aae.a.fdatkaii0411:Itticaittoar.Tionitootoperigeiffift i.i0.K4Al.ii.4001./016,00.101.0.00i:aniVigkamootiMookokifOlogyohdi.0:1A. 011ybt:::R0601.00/okiti.etW4totend vapeitrnonhtonng • 1988 to 1998 ground water monitoring data ."• Approximate cost of 10 years of monitoring: • The dissolved TPH in ground water will likely take • Does not disrupt or affect existing land uses in the • Existing data indicate that the plume does not • demonstrate that contaminant concentrations in $250,000 10 to 20 years to reach MICA Method A cleanup Maplewood neighborhood. currently pose a risk to the Cedar River. Data • ground water are generally decreasing over time, • Estimated mass of hydrocarbon degraded in 10 levels throughout the entire plume. • Possible impacts to residential property values will suggest that the City of Renton water supply wells indicating that intrinsic bioremediation is occurring: years: 37,500 pounds occur for a longer period of time with this option. are also not at risk. Data indicate that there by natural attenuation. • Cost/Benefit Ratio: $7 per pound of hydrocarbon currently is not a safety risk of explosive vapors. degraded , • The cost and risks of conducting remedial action • Estimated years of long-term monitoring following (the two options presented above)may not be • cleanup action:20 years • warranted if there is no risk to receptors. • Cost for 20 years long-term monitoring: $410,000 • (present value in 1998 dollars) Note: Hydrocarbon degradation follows generally an exponential decay pattern; we estimate about 50 percent of the hydrocarbons remaining at this time will degrade over the next 10 years. The remaining . • hydrocarbons will continue to degrade. • • P:\000to09910894002\finals\0894002es-11doc • • • • • • • SP-7 G D _ 33 / / \ V \ 14.0 <10 -.<20 ❑ . 15.0 <10 <20C:i MW-38 G D \ 12.5 <10.0 <10.0 \ 17,0 <10 <20 \ TP-1 TP-12 G D 18.5 <10 <20 MW-43 G. D 11.5 170 3,100 hit:P-2 \ 14.0 670 35 _ O C7� 32 12.0 387 1,240 SP-8 G D ( 0 E ,` P• ��\ TP-3 G D 15.0 <10 <20 6 S Q- /\ 12.0 <10 <10 16.5 <10 <20V 34• AS-1 G D •- -� 13.0 <10 <20 31 0 �� 13.5 1,290 639• ❑ SP-12 G D SF. 44.. :411b4_, ► TP-10 c D • �� 12.0 220 4,080 M W-41 c D 30 15.0 <10 <zo0 18 `S�,S, o� 13.0 100 1,900 15.5 <5.00 <10.0 % SP-5 G D0 •22 J � `/ � / TP-4 G 0 12.0 <10 <20 . ` -511.0 <10 <20 t4.s 240 1,9zo , f/7/ 20 12.ozso2,20011‘, O % / TP-11 G D . ' v SP-10 G D `` •14 ,./,,/' RW-3 TP-6 12.0 240 4,600 18.0 25 480 11114t. /,�'• 12.5 <10 <20 t---i ---------Th9- ' SP-1 G D /13 0 • 17'Alp, / SP-11 G D 12,0 <10 <20 - 37 \� •15 12.5 <10 <20 13.0 330 6,200 • SP-9 G D O .\` 16.0 <10 <20 19.0 <10 <20 16.0 180 3,200 2 / U7 26 19.0 70 1,200 0 ; ,r TP-8,4441 _8P-2 , G D Z NC 15.0 <10 430 / 16 17.0 <10 <20,, v : • SP-3 G D SP-8 c D 15.0 <10 <20 • M W-40 G D 19.0 <10 <2041111,17.5 <10.0 <10.0 O 21 / G1 SP-4 G. D 15.0 90 1,700 N 1s.s <10GD CF rqC / �\\�0 `pQ�' MW-39 15.0 <10.0 <10.0 yl,_ a 7 �O Q�Q \Qe�\t�� SP-1D3 70 590 00 01 �YY Q 17.0 <10 <20 • o RAI�ROgp / - 20 E sT441,111.°. y Sp Iv c.D At\ • . / "41# o N SR o / VI '69 li - - - ---- - F9 a. - - - - XPLANATION: -- ----� -- ----- ------- -- -- - - rjr� GJ / P � ci G GASOLINE-RANGE HYDROCARBONS (mg/kg) QQ 'Lj / BY. ECOLOGY METHOD WTPH-G 0o 0 100 200 '' D DIESEL-RANGE HYDROCARBONS (mg/kg) -� ��. SC N FEET tk / BY ECOLOGY METHOD WTPH-D ez 0 SOIL SAMPLE DEPTHS IN FEET w BELOW GROUND SURFACE Notes: 1. The locations of all features shown are approximate. Refer to Figure 2 for complete legend. PETROLEUM HYDROCARBON CONCENTRATIONS '��4 t IN SOIL, APRIL & MAY 1998 = 2. TP-7 was situated in the' same location as SP-1.1. Geo jEngineers , oReference: Drawing entitled "Cedar River Recovery Area Plot Plan" by Olympic Pipe Line Company, 10/16/86. ��/ FIGURE ES-1 - 00 0 Vof Valley lope SF 0 \ T*, E7- O O TP-2 Y .C7 c:::,), y Sr 0 �, 32 1 * O HA E O '2. 29• ci •31 0Qp� 34 !� TP- �'. '•' • 4� ` ' Block ,�• �.,� 0 *- / � � � :•'�' •'• • '�8. = Valve 30 •.:• 51?'-1• • TP-' • )Site io O' ' . \>: 1- ' .•SP=1 •' ..S'P7- 11•. ../ • • s S • • • E p •14•'. ' w-3 h� F S i �q<< t••••:••: , ••�•• •,�,• ,•a�te,.,.•,,f,SPT2•. •• r 0 •1 �' p:8•'. `�'i:SPi9'. • SF=6'. :� ' �P�3 ✓�. pRW-1 h' ,, 1.,. p_.10 •' 13�. i \ r?• •• • j o iN. Q;.;�. O ti: } : 'SF'ti13� pa Riverview 3• ' / Park o �. � sp-8. '. • . • . • . • . •: • . :/ oQ\ / 7040 \ 12• / 1 1` 0 21 G1 / 39 • 02h / LQ G, .`_ Q`Q �2 / 41 Ilt C. \ - RA/1.R°AD / 41111111111S1111411111, c�* O' 27 6 o Base of Valley Slope -,N P�(2,, / ° ry Sr N �zZ / N e, # /41, c� EXPLANATION: \ 3 N / / S•R �s uiCNJ SP-1 SOIL PROBE (APRIL 1998) g __ — 1 • MONITORING WELL — G N a, F� N ? . Z GROUND WATER DISSOLVED TPH PLUME < �� / o rn Notes: 1. The locations of all features shown are approximate. Refer to Figure 2 for complete legend. co 2. The dissolved TPH plume comprises the area for which April through May 1998 ground water samples 0 100 200 _ w were greater than the MICA Method A cleanup level of 1 milligram per liter (mg/I) for the ..1 sum of gasoline— and diesel—range hydrocarbons. Some locations which did not SCALE IN FEET - exceed MTCA Method A are included within the ground water dissolved TPH plume limits shown based on our review of soil TPH data and our knowledge regarding the limits of the ,�Q s. GROUND WATER DISSOLVED TPH PLUME = historical LNAPL plume. Geo��Engineers ' o Reference: Drawing entitled "Cedar River Recovery Area Plot Plan" by Olympic Pipe Line Company, 10/16/86. � FIGURE ES-2 vi FINAL DRAFT ` FOCUSED CLEANUP ACTION PLAN MAPLEWOOD NEIGHBORHOOD HISTORIC FUEL RELEASE RENTON, WASHINGTON FOR OLYMPIC PIPE LINE COMPANY 1.0 INTRODUCTION This focused Cleanup Action Plan (CAP) describes three options for management of residual ' subsurface petroleum contamination in the vicinity of Olympic Pipe Line Company's (OPLC) block valve in the Maplewood Neighborhood of Renton,Washington: 1 1) Hot Spot Soil Excavation 2) Air Sparging 3) Monitored Natural Attenuation The specific elements comprising each option are presented along with a comparison of the benefits and limitations of each option. The focused CAP identifies the preferred option, air sparging, and a proposed schedule for implementing the preferred option. The focused CAP is resented in Sections 1.0 through 9.0. The associated Engineering Report, Sections 10.0 through 19.0, presents the conceptual ! ! design, assumptions and construction specifications for the air sparging remedial option. Tables, figures and appendices attached to this document provide supporting documentation and 1 information. 2.0 SITE CONDITIONS 2.1 LOCATION AND SITE DESCRIPTION The location of the Maplewood neighborhood is shown in the Vicinity Map, Figure 1. Figure 2 shows the location of OPLC's block valve and the approximate locations of monitoring wells and explorations completed in the site vicinity. Land use in the site vicinity includes single- Family residences and Maplewood Park. The Cedar River and Riverview Park are situated south of Maple Valley Highway in the southern margin of the study area. The Maplewood Golf Course 's situated east of the study area directly east of the Maplewood neighborhood. The City of Renton operates two well fields for public water supply (Figure 1). The ,: approximate location of the closest pumping well (PW-12), located within the Maplewood Golf Course, is shown in Figure 2. 2.2 1986 TO 1993 ASSESSMENT AND REMEDIATION PROGRAM OPLC responded to an underground fuel spill that was discovered in the Maplewood neighborhood in early October 1986. An estimated 80,000 gallons (568,000 pounds) of mixed gasoline, diesel and jet fuel were released at the location of OPLC's block valve. Approximately 30 monitoring wells were installed during the next several months to evaluate subsurface conditions in the vicinity of the block valve site. Subsurface data obtained for the I G e o E n g i n e e r s 1 File No. 0894-002-00/081198 'i 1 FINAL DRAFT 1986 studies consisted of: (1) analysis of ground water samples for benzene, ethylbenzene, toluene and xylenes (BETX), (2) observation of the shallow water table for possible light non- aqueous phase liquid (LNAPL) (free product), and (3) measurement of combustible vapor concentrations in the monitoring well casings. BETX and petroleum hydrocarbon concentrations in soil were not evaluated by chemical analysis during the 1986 to 1988 assessment and remediation efforts. Monitoring was also performed to evaluate vapors in residential crawl spaces and basements and the surrounding ambient air. An intensive 18-month remediation program consisting of ground water pumping, light non- aqueous phase liquid (LNAPL) recovery and soil vapor extraction (SVE) was undertaken beginning in early 1987. The remediation systems included three LNAPL recovery wells (RW-1, RW-2 and RW-3) and two subsurface vapor recovery systems (VRS-1 and VRS-2). The approximate locations of these systems are shown in Figure 2. Vapors recovered from these systems were vented to the atmosphere for a short time and later were treated by catalytic Oxidation as soon as treatment units could be constructed. Active remedial measures at the site were terminated on May 18, 1988 with the concurrence Of the Washington State Department of Ecology (Ecology). The 1987/1988 remedial action recovered an estimated 650 gallons(4,600 pounds)of LNAPL from pumping,treated about 1,550 gallons (11,000 pounds) of dissolved-phase hydrocarbons in ground water, and incinerated aIpproximately 30,000 gallons (213,000 pounds) of fuel vapor. An additional 37,000 gallons (264,000 pounds) of fuel is estimated to have been treated in-situ by natural biodegradation between 1986 and the present. The remedial program was followed by a ground water and soil vapor monitoring program to observe subsurface conditions following shutdown of the remediation systems in the Maplewood neighborhood. Based on an observed decrease in contaminant concentrations, Ecology approved reducing the frequency and scope of the monitoring activities in March 1989. Between March 1989 and August 1993, the monitoring program consisted of (1) measuring water levels and combustible vapor concentrations in monitoring wells located throughout the Maplewood 7ighborhood; (2)observing monitoring wells located within the original plume area for the possible LNAPL (free product); and(3) collecting water samples from selected monitoring wells for chemical analysis of benzene, ethylbenzene,toluene and xylenes (BETX). Based on favorable • monitoring results, the scope of the monitoring program gradually diminished relative to the In' of wells sampled and sampling frequency. Table 1 presents a summary of historical ground water monitoring results. Routine ground water sampling was terminated following the August 1993 monitoring event. At that time only ethylbenzene and xylenes in MW-14 were present at concentrations exceeding 111 the Model Toxic Control Act(MTCA)Method A cleanup levels. Ground water samples obtained 'during the 1989 to 1993 monitoring were not analyzed for total petroleum hydrocarbons. Details of earlier efforts in the characterization and mitigation of the release are described in Progress Reports Nos. 1 through 12 dated December 29, 1986; March 6, 1987; May 14, 1987; 1l G e o E n g i n e e r s 2 File No. 0894-002-00/081198 FINAL DRAFT July 22, 1987; November 2, 1987; April 8, 1988; August 26, 1988; January 19, 1989; November 17, 1989; May 30, 1990; December 17, 1991; and August 25, 1993. The results of monitoring activities during the first month of remediation system shutdown are summarized in Interim Monitoring Status Report Nos. 1 and 2,dated June 10 and July 25, 1988. 2.3 1997 AND JANUARY 1998 MONITORING Following an inquiry from the King County Department of Health, OPLC requested in November 1997 that GeoEngineers conduct another round of ground water sampling from MW-12 and MW-14. MW-14 was sampled; however, because we were initially unable to locate MW-12, a ground water sample was collected from MW-4, located approximately 150 feet west of MW-12. Based on an increased benzene concentration detected in the ground water sample obtained from MW-14 on December 2, 1997, OPLC initiated a more comprehensive sampling of the monitoring wells in the Maplewood neighborhood. Ground water samples were collected on January 7 and January 15, 1998. A quarterly ground water monitoring program was subsequently recommended for 1998. The December 1997 and January 1998 monitoring events are summarized in Progress Report No. 13, dated March 5, 1998. The reader also is referred to rogress Report No. 13 for a preliminary discussion regarding exposure pathways and residual isk to potential receptors. 2.4 APRIL THROUGH JUNE 1998 SUBSURFACE EXPLORATIONS 2.4.1 April 1998 Sampling and Explorations The second quarter 1998 ground water monitoring and sampling event occurred on April 6, 1998. Upon review of the preliminary chemical analytical results, a dramatic increase in contaminant concentrations was noted in the laboratory data for several wells (Table 1). This information was promptly communicated by OPLC to the City of Renton and Ecology. Resampling of ground water and an area-wide exploration and sampling program was immediately undertaken by OPLC in April 1998, as described in Progress Report No. 14 dated May 8, 1998. The April explorations and sampling completed multiple objectives: (1)to identify the reason(s)for the apparent rise in hydrocarbon concentrations,(2)to confirm that there was not a new or ongoing release from the OPLC fuel pipeline, (3) to further define the lateral extent of dissolved-phase hydrocarbons in ground water, and (4) evaluate residual concentrations of hydrocarbons in subsurface soil. The April 1998 field inspections, monitoring, subsurface explorations and analytical testing confirmed that the subsurface hydrocarbons that presently exist in the original plume area are residual from the release that was discovered in 1986. There was no evidence of a new or ( bngoing release from the OPLC pipelines or block valves in the Maplewood neighborhood. G e o E n g i n e e'r s 3 File No. 0894-002-00/081198 i - FINAL DRAFT 2.4.2 May and June 1998 Subsurface Explorations 2.4.2.1 General. Monitoring wells MW-38 through MW-41, MW-43 and AS-1 were completed in May 1998 to further evaluate the soil and ground water conditions beneath the area. Soil and ground water sampling was conducted from these explorations to evaluate the lateral extent of petroleum in soil and dissolved-phase hydrocarbons in ground water. Selected soil samples obtained during drilling of the May explorations also were evaluated with respect to hydrocarbon fractionation in accordance with Ecology's Interim Interpretive and Policy Statement, Cleanup of Total Petroleum Hydrocarbons (Interim TPH Policy), as further described in Appendix C. AS-1 was drilled to install an air sparging test well, as further described in Section 13.1. Monitoring wells MW-42 Shallow and MW-42 Deep were drilled in June 1998 to evaluate site geology and to provide monitoring points with respect to ground water gradient and ground water quality upgradient of the dissolved plume. The approximate locations of the explorations are shown in Figures 2 and 3. The shallow borings were completed using hollow-stem auger drilling equipment and extended to depths ranging from 20 to 51 feet below ground surface(bgs). MW-42 Deep was completed using cable tool drilling equipment and extended to a depth of 302 feet bgs. A representative of • GeoEngineers selected the exploration locations, observed and field screened soil samples obtained from the explorations and selected samples for chemical analyses. GeoEngineers' field procedures are described in Appendix A. Appendix A also contains the boring logs and well reconstruction details. Chemical analytical data for the ground water and soil samples from the 1VIay 1998 explorations are summarized in Tables 1 and 2. Chemical analytical data sheets, chain-of-custody records and our review of the laboratory QC program are included in Appendix B. Wells MW-42 Shallow and MW-42 Deep were not sampled in June 1998. 2.4.2.2 Subsurface Geology and Hydrogeology. Generalized subsurface cross sections of the Maplewood area are'shown in Figures 4 and 5. The uppermost geologic unit beneath the site consists of post-glacial alluvium. The upper 5 to 8 feet of the post-glacial alluvium generally consists of silt and silty sand. Sandy gravel generally occurs beneath the silt and silty sand. The thickness of the post-glacial alluvial deposit ranges from about 20 feet to 40 feet. Dense, pre-glacial sediment occurs beneath the post-glacial alluvium. The pre-glacial sediment includes layers and lenses of silty, silty sand, sand and sandy gravel. The water supply wells in the Maplewood Golf Course are completed within the more permeable gravel deposits of the pre-glacial unit. Sedimentary rock is present beneath the pre-glacial sediments, as illustrated in the subsurface cross sections shown in Figures 4 and 5. Bedrock is exposed at the ground surface along the south valley wall of the Cedar River, at the west end of Section A-A' (Figure 4). Bedrock is ; estimated to be at least 300 feet bgs in the vicinity of the block valve enclosure. GeoEngineers 4 File No. 0894-002-00/081198 FINAL DRAFT • With the exception of MW-42 Deep and AS-1, the monitoring wells beneath the OPLC site are screened in the upper 25 feet within the post-glacial alluvium. The direction of shallow ground water flow is toward the southwest as documented in Progress Report No. 14. Table 3 summarizes the June 24, 1998 ground water elevation data for the study area. The well screen for the air sparging test well AS-1 is situated between 35 and 37 feet bgs in a dense sand unit within the pre-glacial sediments. Based on comparison of June 1998 depth to ground water measurements in AS-1, MW-38 and MW-43, the potentiometric surface within the uppermost portion of the pre-glacial sediments is approximately 6.5 feet higher than the water level in the shallow post-glacial alluvium. Therefore, there is a strong upward gradient between the upper portion of the pre-glacial sediments and the overlying post-glacial alluvium. Ground water elevations (City of Renton datum) for June 1, 12 and 24, 1998 for these three wells are summarized below. a � I Water Surface Elevation (feet) Date MW-38 MW-43 AS-1 June 1,1998 54.35 54.30 60.90 June 12,1998 54.15 54.11 60.67 June 24, 1998 54.11 54.08 60.68 The upward flow gradient in the block valve area indicates that a substantial volume of ground water is discharging from the pre-glacial sediments to the post-glacial alluvium in the u icinity of the block valve. The upland area north of the Cedar River Valley is believed to be the source of the ground water that is entering the valley in the block valve area. Comparison of ground water elevations in MW-42 Deep and MW-42 Shallow on June 24, 1998 also confirm the upward gradient(Table 3). 21.4.2.3 Soil Field Screening and Chemical Analyses. • Field screening was performed on soil samples obtained at continuous to 5-foot intervals from the shallow borings for evidence of petroleum-related contamination. A description of field screening methods is included in Appendix A. Field screening results are included in the boring logs (Appendix A) and in Table 2 for the soil samples submitted for chemical analysis. • Field screening results generally were used as the basis for selecting soil samples for ' chemical analysis. In general, the soil samples with the highest apparent degree of contamination based on field screening, and/or the sample corresponding to the top of the zone of water table fluctuation,were submitted for chemical analyses. • Chemical analytical results for the soil samples from the May 1998 explorations are summarized in Table 2 and Figure 6. Chemical analytical data sheets, chain-of-custody records and our review of the laboratory QC data are included in Appendix B. G e o E _n i n e e r s g 5 File No. 0894 002 00/081198 FINAL DRAFT 111 • Field screening indicated evidence of residual petroleum at MW-38 at 12.5 feet bgs, MW-43 at 12 feet bgs and AS-1 at 13.5 feet bgs. Concentrations of gasoline and/or diesel-range hydrocarbons were greater than the MTCA Method A cleanup levels of 100 and 200 milligrams per kilogram (mg/kg), respectively, in the samples from MW-43 at 12 feet bgs and AS-1 at 13.5 feet bgs. Petroleum hydrocarbons were not detected in the sample from MW-38 at 12.5 feet. The data for MW-38 are not consistent with the field screening results that indicated evidence of residual petroleum in the MW-38-12.5 sample. This discrepancy is likely due to sample heterogeneity and our observation that the zone of residual petroleum is relatively thin at this location. • Field screening did not indicate evidence of residual petroleum at MW-39, MW-40, MW-41, MW-42 Shallow and MW-42 Deep. Gasoline-, diesel- and heavy oil range hydrocarbons were not detected in the soil samples from MW-39,MW-40 and MW-41. • BETX were not detected in the five soil samples tested, including samples MW-38-12.5, MW-43-12 and AS-1-13.5. • Soil samples AS-1-13.5 and MW-43-12 also were submitted for chemical analysis of volatile petroleum hydrocarbons (VPH) and extractable petroleum hydrocarbons (EPH), polycyclic aromatic hydrocarbons (PAHs), methyl tert butyl ether (MTBE), BETX and naphthalene, using Interim TPH Policy analytical methods(Table 2). • BETX, MTBE, naphthalene and carcinogenic PAHs (cPAHs) were not detected in the two samples. I• VPH and EPH fractions were detected in the two samples(Table 2). The VPH and EPH data were used to evaluate petroleum in the soil with respect to MTCA Method B (Appendix C). 3.0 NATURE AND EXTENT OF CONTAMINATION 3.1 AREAS OF RESIDUAL PETROLEUM • 3.1.1 Ground Water Figure 7 shows the approximate extent of dissolved-phase hydrocarbons (concentrations greater than 1 mg/1) in ground water beneath the study area. The dissolved plume is approximately 1,200 feet long in the direction of the ground water gradient (to the southwest). The plume width is a maximum of about 350 feet at the downgradient margin of the plume. The tk ;highest TPH concentrations are generally in the central portion of the plume with TPH concentrations in ground water at MW-38,MW-18,MW-19,MW-20,MW-14,MW-15 and MW- '16 between about 2 and 30 mg/1 (sum of gasoline- and diesel-range). The highest detected concentration of benzene within the plume (1998 data) is about 129 µg/1 at MW-20. The MTCA Method A cleanup level for benzene is 5 micrograms per liter (µg/1). No LNAPL is known to be present within the study area. 3.1.2 Soil April and May 1998 soil analytical data are summarized in Figure 6. Based on the April and May 1998 explorations conducted within the study area, gasoline- and diesel-range hydrocarbons G e o E n g i n e e r s 6 File No. 0894-002-00/081198 FINAL DRAFT are present in soil surrounding the block valve and within the central portion of the ground water plume, between depths of about 11.5 to 15 feet bgs at the upgradient margin of the plume and 18 to 20 feet bgs at the downgradient margin of the plume. These-findings are consistent with the historical observation of LNAPL in these areas. The observed depths of residual petroleum.in soil generally correspond to the approximate 2-to 4-foot zone of water table fluctuation, or the "smear zone." The maximum concentrations of petroleum detected in the April and May 1998 soil samples were 1,290 mg/kg gasoline-range hydrocarbons at AS-1 at a depth of 13.5 feet bgs land 6,200 mg/kg diesel-range hydrocarbons at SP-1 at 13 feet bgs. l3.1.3 Total Mass of Residual Petroleum Based on soil and ground water chemical analytical data and the estimated areas of residual 'soil contamination, an approximate mass of 75,000 pounds of petroleum originating from the 1986 OPLC block valve release remains in the subsurface. More than 99 percent of this mass is !presently adsorbed to soil; the remaining less than 1 percent is currently dissolved in ground water. '3.2 REVIEW OF POTENTIAL EXPOSURE PATHWAYS The exposure pathways evaluated for the site are discussed below. - 3.2.1 Soil to Ground Water Pathway The results of our April and May 1998 supplemental assessment indicate that residual petroleum hydrocarbons in soil are in contact with ground water. Further, ground water analytical data indicate that TPH and/or BETX concentrations exceed MTCA Method A cleanup levels in areas with residual petroleum in soil and downgradient of the residual soil-impacted area. The City of Renton operates several water supply wells within about 1.5 miles of the site, including the downtown well field situated 1.5 miles west of the site, and the Maplewood Golf Course well field approximately 1/4 mile east of the site (Figure 1). The upgradient golf course wells pump ground water from a deep aquifer situated between 200 and 400 feet below grade. The upward flow gradient evidenced in the vicinity of the OPLC block valve suggests that dissolved-phase contaminants originating from the OPLC block release are not likely to migrate to the pumping wells under pumping conditions; however, empirical data and/or modeling are needed to confirm this condition. Two of the remedial options further described in this focused CAP would mitigate this pathway to some extent. 3.2.2 Inland Ground Water to Surface Water Pathway Ground water beneath the site discharges to the Cedar River (Figure 2). Petroleum ! contaminants were not detected in ground water samples obtained from monitoring wells situated between the north bank of the Cedar River and the plume. Therefore, it appears at this time that G e o E n g i n e e r s 7 File No. 0894-002-00/081198 FINAL DRAFT the plume attenuates naturally before discharging to the Cedar River and thus does not pose a risk to surface water. The dissolved plume is expected to continue to shrink over time. Continued ground water monitoring will be conducted to confirm that this pathway does not pose a risk. 3.2.3 Soil/Ground Water to Vapor Inhalation Pathway Y Contaminants in subsurface soil and ground water could volatilize and migrate via permeable soil zones or through utility corridor backfill to confined spaces such as residential crawl spaces, basement or utility vaults. The remedial options and monitoring described further in this focused -- CAP and Engineering Report are proposed to evaluate and mitigate this potential pathway. 3.2.4 Soil Direct Contact Pathway Future deep excavations for construction of utilities, roads or buildings within portions of the residual soil plume could encounter residual petroleum in soil; however, the depth of residual ;contaminants within the zone of water table fluctuation makes this contact pathway unlikely. The human health risk posed by this potential exposure was evaluated using methodology in ,Ecology's Interim TPH Policy as described in Appendix C. Based on this evaluation, TPH concentrations less than 3,800 mg/kg do not pose a human health risk under the residential ;exposure scenario as defined by MTCA. The remedial options discussed further in this document and/or institutional controls would mitigate this potential pathway. 4.0 SUMMARY OF CLEANUP STANDARDS —' 4.1 INDICATOR HAZARDOUS SUBSTANCES AND CLEANUP LEVELS The indicator hazardous substances for the site were selected based on the criteria in WAC 173-340-708(2). The indicator hazardous substances and corresponding ground water cleanup levels are listed below. The current MTCA Method A cleanup levels for soil are shown for comparative purposes. MTCA Method A Soil MTCA Method A Ground Water Cleanup Level Cleanup Level Indicator Hazardous Substance (mg/kg) (mg/I) Benzene 0.5 0.005 Ethyibenzene 20 0.030 Toluene 40 0.040 Xylenes 20 0.020 TPH Gasoline=100 1.0 (sum of gasoline-and diesel-range Diesel=200 hydrocarbons) Cleanup at this site will continue until Method A ground water cleanup levels are met. L. 'Because the MTCA regulation is currently under revision, final selection of soil cleanup levels will be deferred until the final regulation has been established and after ground water cleanup levels are met at the site. G e o E n g i n e e r s 8 File No. 0894-002-00/081198 FINAL DRAFT 4.2 POINTS OF COMPLIANCE Proposed points of compliance are the following monitoring wells that comprise the former historical limits of the LNAPL and dissolved phase plume: MW-2, MW-3, MW-4, MW-12, MW-13, MW-14, MW-15, MW-16, MW-17, MW-18, MW-19, MW-20 MW-25, MW-30, MW-2,MW-34,MW-39,MW-40,MW-41 and MW-43. 4.3 ARARS Federal, state and local applicable, relevant and appropriate requirements (ARARs) for - possible remedial actions at the site are listed in Table 4. 5.0 DESCRIPTION AND REVIEW OF CLEANUP OPTIONS 5.1 OVERVIEW AND MTCA REMEDY SELECTION CRITERIA Three options are identified for management of residual subsurface petroleum contamination in the vicinity of OPLC's block valve in the Maplewood Neighborhood of Renton, Washington: 1) Hot Spot Soil Excavation 2) Air Sparging 3) Monitored Natural Attenuation These alternatives are described more fully in Section 5.2. Table 5 presents a comparative description of the remedial options. MTCA requires that cleanup alternatives be evaluated in relation to the following criteria (WAC 173-340-360): • Protection of human health and the environment. j• Compliance with cleanup standards defined in WAC 173-340-700 through—760. j• Compliance with ARARs. • Provisions for compliance monitoring. • Permanency of selected remedy. • Restoration time frame. Section 6.0 presents the remedy selection rationale following these criteria. .5.2 GENERAL DESCRIPTION OF OPTIONS 15.2.1 Hot Spot Soil Excavation The basic concept of hot spot excavation is to remove the "source" of contamination to ' ground water: the residual petroleum-contaminated soil in closest proximity to the original 'release. "Hot spot" removal of accessible petroleum-contaminated, soil would occur in the immediate vicinity of the block valve enclosure in the OPLC utility easement north of Southeast 5th Street. Soil excavation is not proposed beneath Southeast 5th Street, Maplewood Park, other G e o E n g i n e e r s 9 File No. 0894-002-00/081198 FINAL DRAFT nearby city streets or private property, for practical and logistical reasons as described in more detail below. This option would involve excavation of approximately 3,000 cubic yards of noncontaminated overburden and approximately 1,500 cubic yards of petroleum-contaminated oil from the water table zone, at depths ranging from about 10 to 15 feet bgs. The contaminated soil would be transported off-site by trucks to a treatment facility or landfill. Temporary dewatering likely would be needed to access contaminated soil, depending on the time of year xcavation is conducted and seasonal ground water levels. Temporary shoring would be needed for effective excavation adjacent to Southeast 5th Street and to protect the existing OPLC block valve vault and pipelines. Excavation within private property is not proposed because it would require acquisition of access agreements and could not be completed effectively on residential property without ' removal of some residential structures. Soil excavation is very disruptive in the short term and would be a major inconvenience, although temporary, to residents. Excavation of residual contaminated soil in Maplewood Park is also not proposed because of the numerous utilities in this area, including active fuel pipelines. Furthermore, excavation in the park would be a major inconvenience to park users. Similarly excavation beneath street right-of-way would interfere With active utilities and street use. For these reasons, widescale excavation of residual soil is not considered practical. 5.2.2 Air Sparging Air sparging, involving controlled injection of air below the water table, would be used to treat residual volatile and biodegradable hydrocarbons in ground water and soil in the water table zone. The proposed air sparging system would consist of a series of vertical air sparging wells located within the block valve area, Maplewood Park and the nearby public rights of way (sidewalks). Air sparging is a technically feasible remedial technology for this site for the following reasons: • Air sparging is a viable source treatment technology for residual petroleum in soil within the smear zone. • The relatively permeable soil types beneath the site are favorable for effective air sparging. • Air sparging will treat the shallow ground water by volatilizing gasoline-related hydrocarbons and introducing oxygen to enhance biodegradation of diesel-range hydrocarbons. • Treatment of soil and ground water in the central and upgradient portions of the plume will improve ground water quality in monitoring wells located downgradient of the air sparging wells. In general, air sparging will reduce hydrocarbon loading to downgradient areas and thus increase the rate of natural attenuation occurring in the downgradient portions of the I plume where direct treatment is not initially proposed. G e o E n g i n e e r s 10 File No. 0894-002-00/081198 FINAL DRAFT • Vapor generation induced by air sparging can be mitigated to some degree by reactivating vapor recovery system VRS-1. • Air sparging remediation is more cost effective than other active in-situ or ex-situ remedial options for this site. _ The proposed air sparging system would consist of a series of vertical air sparging wells situated within the block valve area, Maplewood Park and the nearby public rights of way t (sidewalks). The wells would be connected via underground piping to air compressors situated in equipment enclosures within the Park and near the block valve site. Compressed air would be delivered via underground piping between the compressor(s) and well(s). The air sparging system aboveground equipment will be sound-proofed to the extent possible. Additionally, the system would not operate during nighttime hours to reduce noise inconvenience to nearby residents. Volatile hydrocarbon vapors, expected during the initial phases of sparging, would be collected through reactivated vapor recovery trench VRS-1. Recovered vapors would be routed to a vapor treatment unit(carbon or oxidizer) situated within the block valve enclosure. If VRS-1 is not completely effective in capturing vapors liberated by air sparging, it may become necessary to install vertical vapor recovery wells in some areas. The proposed air sparging system is a different approach than the ground water and vapor recovery techniques applied at the site in 1988. 5.2.3 Monitored Natural Attenuation Ground water and vapor monitoring of existing wells would continue in accordance with the current monitoring programs or as modified in the future by OPLC with concurrence from Ecology and/or the City of Renton. Ground water and vapor monitoring would be evaluated to confirm that conditions do not pose a risk to possible receptors. The rationale for this option is as follows: • Natural attenuation of the ground water plume already is occurring at the site, as indicated by the reduction in dissolved hydrocarbon concentrations between the central portion of the plume and the Cedar River. The dissolved-phase plume will continue to attenuate over time by biodegradation processes. 6 Ground water monitoring data indicate that dissolved hydrocarbons are not currently entering I the Cedar River. • A strong upward ground water gradient exists in the block valve and plume areas. Given the distance between the City of Renton pumping wells and the block valve site, it is possible that contaminants originating from the OPLC release cannot migrate into the deeper aquifer even during pumping conditions. A pump test is needed to further evaluate this condition. • The cost of conducting additional remedial action may not be warranted if there is no risk to receptors. G e o E n g i n e e r s 11 File No. 0894-002-00/081198 FINAL DRAFT • The air sparging remedial action will result in liberation of vapor-phase hydrocarbons and will pose greater relative environmental risk than monitoring only. • The dissolved-phase plume will continue to attenuate over time by existing biodegradation processes. _ 5.3 COMPLIANCE MONITORING Compliance monitoring will be completed to confirm protection, performance and confirmation of the cleanup action during and after construction activities (WAC 173-340-410). IThe compliance monitoring plan for ground water is presented in Section 18.3. The compliance monitoring plan for soil is presented in Section 18.4. 6.0 RATIONALE FOR SELECTION OF THE CLEANUP ACTION The cleanup options for the OPLC Maplewood site generally meet the conditions of WAC 173-340-360,as summarized in the Sections 6.1 through 6.5. 6.1 PROTECTION OF HUMAN HEALTH AND ENVIRONMENT 6.1.1 Hot Spot Soil Excavation The hot spot soil excavation remedial option is intended to be protective of human health and the environment by removing accessible soil in closest proximity to the block valve. This source removal action will ultimately improve downgradient ground water quality. Cleanup levels for TPH and BETX are established at concentrations protective of human health. 6.1.2 Air Sparging The air sparging remedial alternative is intended to be protective of human health and the environment by treating soil containing residual petroleum and by treating ground water within the majority of the upgradient portion of the plume. Cleanup levels for TPH and BETX are established at concentrations protective of human health. Mitigation measures and monitoring will be used to verify that the remedial action is not introducing potential exposures via the vapor 'inhalation pathway. However, air sparging will liberate vapor-phase hydrocarbons creating a potential vapor exposure risk that does not presently exist under the monitored natural attenuation option. 16.1.3 Monitored Natural Attenuation The monitored natural attenuation option is protective of human health and the environment provided there are no risks to receptors. As previously mentioned, additional evaluation should be conducted with respect to the ground water pathway, drinking water receptors and subsurface hydrocarbon vapors. Monitoring will be conducted under this option to confirm that there are no risks to receptors. Institutional controls could be used, if appropriate, for soil exceeding the applicable cleanup level. G e o E n g i n e e r s 12 File No. 0894-002-00/081198 FINAL DRAFT 6.2 ATTAINMENT OF STANDARDS 6.2.1 Hot Spot Soil Excavation Hot spot removal would remove a portion of the area with the highest residual hydrocarbon concentrations in soil. After excavation, there may be areas in the vicinity of Southeast 5th Street where petroleum in soil exceeds the applicable soil cleanup level; deed restrictions and/or 'institutional controls could be used to prevent potential exposures to soil that exceeds the applicable soil cleanup level. Ground water quality will ultimately improve over time. Deed restrictions and/or institutional controls could be used to prevent potential exposures to ground water with hydrocarbon concentrations greater than the MTCA Method A cleanup levels. Based on experience and knowledge of the site data, it would be 10 or more years before TPH concentrations in ground water are in compliance with the MTCA Method A cleanup levels. 16.2.2 Air Sparging This remedial option would be designed to treat the primary areas of soil and ground water contamination and to reduce the overall risk of potential exposures via the ground water and surface water pathways. The time frame for air sparging is estimated to be 1 to 3 years. 6.2.3 Monitored Natural Attenuation Deed restrictions and/or institutional controls could be used to prevent potential exposures to ground water with hydrocarbon concentrations greater than the MTCA Method A cleanup levels and to soil that exceeds the applicable soil cleanup level. Based on experience and knowledge of the site data, it could be 10 to 20 years before TPH concentrations in ground water are in compliance with the MTCA Method A levels. 6.3 LONG-TERM EFFECTIVENESS '6.3.1 Hot Spot Soil Excavation Based on experience and knowledge of the site data, it would be 10 or more years before TPH concentrations in ground water are in compliance with the MTCA Method A cleanup levels. 6.3.2 Air Sparging This remedial alternative is intended to minimize risks related to human health direct contact to contaminated soil, risks to ground water and vapor exposures. Furthermore, this option will augment natural in-situ degradation of TPH. The time frame for air sparging is estimated to be 1 to 3 years. 6.3.3 Monitored Natural Attenuation Deed restrictions and/or institutional controls could be used to prevent potential exposures to iground water that exceeds the MTCA Method A cleanup levels and to soil that exceeds the applicable cleanup level for TPH. It could be 10 to 20 years before TPH concentrations in ground water are in compliance with MTCA Method A cleanup levels. G e o E n g i n e e r s 13 File No. 0894-002-00/081198 FINAL DRAFT 6.4 COMPLIANCE WITH ARARS The remedial options are intended to comply with federal, state and local ARARs, as discussed in Section 4.3. 6.5 COMPLIANCE MONITORING Compliance monitoring is described in Section 18.0. The Site Safety Plan (see Section 19.1) will address protection monitoring during the cleanup option. Ground water confirmational monitoring will be conducted at points of compliance for a period of time during and after the cleanup action. 7.0 PREFERRED ALTERNATIVE AND RECOMMENDATIONS 7.1 PREFERRED ALTERNATIVE The preferred alternative proposed by OPLC is Air Sparging. The basis for this preference is the favorable cost-benefit ratio as indicated in Table 5. The Engineering Report presents the conceptual design, assumptions and construction specifications for the air sparging remedial option. At this time, the air sparging system design has been completed to about the 70 percent level. The final remedy selection and design will occur following input and comments on the CAP from the City of Renton,Ecology, and residents of the Maplewood Neighborhood. 7.2 RECOMMENDATION TO FULLY ASSESS RISK TO CITY OF RENTON DRINKING WATER SUPPLY We recommend that the City of Renton conduct a pumping test of City of Renton pumping wells in the Maplewood Golf Course to assess actual risk to ground water and receptors. We recommend a minimum pumping test duration of 7 days utilizing all of the golf course pumping 'wells. The objective of the pumping test would be to confirm that dissolved phase hydrocarbons originating from the OPLC block valve release could not migrate to the City of Renton wells during pumping conditions. Ground water levels can be measured in OPLC monitoring wells, including MW-42 Shallow,MW-42 Deep and AS-1, during the test. 8.0 SCHEDULE The preliminary schedule for final selection of the remedial action alternative is presented in Figure 8 and discussed in Section 11.0 of the Engineering Report. 9.0 PUBLIC NOTICE AND PUBLIC COMMENT This focused CAP will be reviewed by the City of Renton and by Ecology through the 1Voluntary Cleanup Program. Public notice may be made through announcement of this VCP action in Ecology's Site Register publication. Formal response to any public comment received is not required for this independent cleanup; however, Ecology and/or OPLC may elect to respond to public comments. G e o E n g i n e e r s 14 File No. 0894-002-00/081198 FINAL DRAFT AIR SPARGING ENGINEERING REPORT MAPLEWOOD NEIGHBORHOOD HISTORIC FUEL RELEASE RENTON, WASHINGTON FOR OLYMPIC PIPE LINE COMPANY 10.0 INTRODUCTION AND BACKGROUND 10.1 GENERAL This Engineering Report presents the conceptual design, assumptions and construction specifications for an air sparging s stem proposed to remedy subsurface petroleum originating from the OPLC block valve in the Maplewood neighborhood. The site location and description, summary of previous work conducted at the site, and nature and extent of contamination are included in Sections 2.0 and 3.0 of the focused CAP. 10.2 CLEANUP LEVELS The cleanup levels for the site are presented in Section 4.1 of the focused CAP. 10.3 FOCUSED CAP REMEDIAL ACTION Three options are identified for management of residual subsurface petroleum contamination in the vicinity of OPLC's block valve in the Maplewood Neighborhood of Renton, Washington: 1) Hot Spot Soil Excavation 2) Air Sparging 3) Monitored Natural Attenuation These alternatives are described more fully in Section 5.2. The Engineering Report describes the air sparging remedial option. 11.0 SCHEDULE 11.1 PERMITS The following permits are or may be necessary to construct and operate the air sparging system at the site. SEPA Determination of Nonsignificance (DNS) with the City of Renton or Ecology as lead agency. • Building,Plumbing or other permits from the City of Renton. 0 Notice of Construction from PSAPCA. The schedule for permit application is included in Figure 8. 11.2 FINAL DESIGN AND CONSTRUCTION The preliminary schedule for design and construction is presented in Figure 8. The schedule is contingent upon receipt of a SEPA DNS and other applicable permits. G e o E n g i n e e r s 15 File No. 0894-002-00/081198 FINAL DRAFT 12.0 CONCEPTUAL PLAN OF AIR SPARGING REMEDIAL OPTION 12.1 GENERAL The remaining sections of this Engineering Report describe the conceptual plan and design criteria for the air sparging remedial option. At this time the system design has been completed to about the 70 percent level. The conceptual plan and design are based in part on the results of an hair sparging pilot test conducted at the site between June 1 and June 8, 1998. The pilot test results are described in Section 13.1. Rationale for the conceptual plan of the air sparging remedial option include the following: ;• Air sparging is proposed to treat volatile and biodegradable petroleum hydrocarbons in the vicinity of the former OPLC block valve release. This area is selected because it represents the highest concentrations of petroleum hydrocarbons in soil and because it is in the central and upgradient portions of the plume. Treatment in the central and upgradient portions of the plume will reduce hydrocarbon loading and increase oxygen delivery to the downgradient portions of the plume, stimulating an increased rate of biodegradation in the downgradient areas. • It is not practical to install air sparging wells on private property or beneath existing roads because of access restrictions. Therefore, all proposed air sparging well locations, shown in Figure 9, are within the OPLC easement, the block valve area, Maplewood Park, and the grassed strip rights-of-way between the sidewalk and curb alignments. • The proposed locations of the air sparging wells are intended to avoid, to the extent possible, short-circuiting of air flow where preferential pathways such as underground utility trench backfill material exist. Existing shallow utilities or near-surface piping extending between sparging wells are not considered to pose a significant concern for short circuiting. • The layout of air sparging wells consists of five approximately linear collections of two to • five wells each, as generally shown in Figure 9. The linear segments are generally arranged perpendicular to the ground water flow gradient. Air sparging wells are spaced relatively closely (30 feet) within each of the linear segments. This layout is to provide optimum distribution of air to the subsurface perpendicular to the ground water flow path. The linear segments are spaced at approximately 100 feet intervals; the design intent of this layout is to allow downgradient distribution of dissolved oxygen while keeping the total number of sparging wells reasonable and manageable. • Air sparging has the potential to mobilize or liberate LNAPL and to liberate volatiles. Therefore, the system will be operated at relatively low air flow rates (2 to 5 standard cubic feet per minute [scfm] per sparging well). A further control on volatiles' introduction will be to bring individual wells on line one-at-a-time and only after conditions from the start up of each preceding well has stabilized. If after start up of the air sparging system, LNAPL is detected in the areas of influence of the air sparging wells, then the air sparging system will be temporarily shut down and the LNAPL will be removed either by pumping or hand bailing. Similarly, if concentrations of volatiles in confined spaces does not meet acceptable G e o E n g i n e e r s 16 File No. 0894-002-00/081198 FINAL DRAFT criteria (see Section 18.0), the air sparging system will be temporarily shut down. If this occurs,the continued operation and effectiveness of the air sparging system will be evaluated and OPLC will submit a proposal to Ecology before restarting the air sparging system. • Active vapor recoverymeasures will be undertaken initiallyand for as longas needed. After P the system has been in full operation and the concentrations of volatiles have decreased, active vapor recovery actions will be suspended and monitoring of vapors will continue. The primary components of the air sparging remedial option include: air sparging wells and 'piping, vapor recovery system, and aboveground equipment and equipment enclosures. Each of 'these components is generally described in Sections 12.2 to 12.4. 12.2 AIR SPARGING WELLS AND PIPING The air sparging system would include approximately 19 vertical air sparging wells oriented approximately as shown in Figure 9. Actual number and placement of the wells may vary somewhat because of existing underground utilities and monitoring wells. The alignment of the ;air sparging wells may be staggered on each side of header pipes to maximize the coverage of air jsaturation. Each air sparging well would be constructed of 2-inch-diameter PVC well casing with an approximate 1.5-foot long screen positioned near the base of the alluvial deposits at approximately 20 to 25 feet bgs. Figure 10 shows the cross-section of a typical air sparging well. Because of the relatively large number of wells and the distances between the wells, the well system will be divided into an eastern branch(AS-1 through AS-11)and a western branch(AS-12 through AS-19). A separate air compressor will supply air to each branch. Within each branch, each well will be served by an individual air line so that the wells can be operated individually or collectively. The proposed layout in plan view of the air sparging conveyance pipe trench is 'shown in Figure 9. Conveyance piping between the wells and the compressors will be placed at least 1.5 feet below grade. Figure 10 shows a cross-section schematic for the underground conveyance piping. The existing conduit beneath Southeast 5th Street will be used, if possible, in ,lieu of constructing a new utilities trench beneath this road. Piping manifolds will be constructed within the equipment enclosures and, as needed, in shallow below-grade vaults to allow maximum flexibility in directing air flow and to minimize the size of piping trenches. Installation of underground piping is not likely to encounter petroleum-contaminated soil based on the relatively shallow trench depths. The following standard construction practices will Abe employed with respect to site preparation and trenching that could be performed within the unpaved areas: 1• Locate existing underground utilities to the extent possible. • Remove sod from areas planned for excavation. Construct temporary erosion and sediment control measures. .• Prepare temporary soil stockpile areas. • Prepare an equipment staging area,residuals storage area, and site ingress and egress. G e o E n g i n e e r s 17 File No. 0894-002-00/081198 FINAL DRAFT !' Complete trench excavation,pipe placement, and backfilling. • Restore area with sod or appropriate ground cover. Trenching within paved areas, if any, will be similar except that concrete or asphalt removal will be performed, the pavement subgrade and/or base course will be prepared and compacted in 'accordance with City requirements, and a similar pavement section will be replaced. '12.3 VAPOR MITIGATION The conceptual plan for vapor recovery is to reactivate VRS-1, the horizontal vapor collection piping extending along the western margin of Maplewood Park at the approximate location shown in Figure 9. If VRS-1 is not completely effective in capturing vapors liberated by air sparging, it may become necessary to install vertical vapor recovery wells in some areas. The VRS-1 trench consists of horizontal slotted screen situated at between 6 and 8 feet bgs. Three vertical risers(solid pipe)extend from the horizontal pipe to about 3 feet below grade. The risers are connected to solid header pipe extending parallel to the trench and connecting to a manifold situated within a shallow below-grade vault at the approximate location shown in Figure 9. The 'vapor recovery piping extends from the vault to the block valve equipment enclosure. The existing piping would be connected to a vacuum blower situated within one of the equipment enclosures. A vapor treatment unit, either a catalytic oxidizer or carbon canister, would be used to treat recovered vapors. After treatment, the exhaust would be emitted to the atmosphere under permit from PSAPCA. 12.4 ABOVEGROUND EQUIPMENT AND EQUIPMENT ENCLOSURES Figure 11 presents a conceptual schematic of the air sparging system process flow and ,primary equipment. Electrical drawings for electrical system modifications and connections will lbe provided by the remedial contractor after specific equipment is selected. Air will be delivered to the sparging wells via underground piping that will originate at air compressors to be situated in two equipment enclosures at the approximate locations shown in Figure 9. The actual locations of the enclosures are subject to approval from the City of Renton and may be modified from the locations shown in Figure 9. Individual air sparging lines to each air sparging well will be manifolded together within the equipment enclosures or within shallow subsurface vaults. A flow valve,pressure regulator and flow meter will be located on each line at ithe manifolds. Figure 10 presents schematic piping and instrumentation details for the air sparging system pipe manifold. G e o E n g i n e e r s 18 File No. 0894-002-00/081198 FINAL DRAFT 13.0 CONCEPTUAL DESIGN CRITERIA 13.1 JUNE 1998 AIR SPARGING PILOT TEST 13.1.1 AS-1 Installation Air sparging test well AS-1 was installed on May 22, 1998 at the approximate location shown in Figure 3. Field procedures for drilling and soil sampling are included in Appendix A. The soil boring and well construction logs for AS-1, MW-38 and MW-43 are included in Appendix A as well as logs for MW-18,MW-19 and MW-20 which were completed in 1986. AS-1 was completed with a 2-foot length of 0.020-inch width well screen positioned between 35 and 37 feet below ground surface (bgs). The screen is positioned in very dense sand in the uppermost portion of the pre-glacial sediments (Figure 4) and about 10 feet below the base of the post-glacial sand and gravel(see Section 2.4.2.2). 13.1.2 Objectives The objectives of the air sparging test included: • To obtain data to support design parameters for the proposed air sparging remediation system, including air sparging well spacing, radius of influence, optimum injection flow rates and injection pressures. • To support equipment specifications for the proposed air sparging remediation system. • To evaluate the effects of air sparging on combustible vapor concentrations in the vadose zone. • To evaluate system requirements for vapor mitigation during sparging. • To evaluate the possible short-term effects of air sparging on ground water contaminant concentrations. • To provide information to support a mass-balance evaluation and an estimate of remediation time frame. • To evaluate the effects of heterogeneities on air flow distribution. 13.1.3 Overview of Pilot Test An air sparging pilot test was conducted in sparging well AS-1 between June 1 and June 8, 1998. The test was started on June 1 at 16:45 (4:45 pm). The test was shut down on June 8 at 14:50 (2:50 pm). The test ran continuously for the 7-day period except for three very brief(less than 15 minute) shut downs for air compressor filter replacement. A 3 horsepower Quincy Rotary Screw air compressor Model 3-QNW-QT3-6500436 was connected directly to AS-1 for the sparge test. A particulate filter, an oil filter and a carbon filter were placed in-line between the compressor and AS-1 to assure injected air was free of oil and particulates. Air injection pressure was monitored regularly,during the test using a pressure gauge and Dwyer air flow meter. A flow/pressure regulator(Norgren R12-400-RNLA) was used to adjust injection pressure and flow rates. Table 6 summarizes the air injection pressure and flow rate data for AS-1 during the sparging test. G e o E n g i n e e r s 19 File No. 0894-002-00/081198 FINAL DRAFT The following wells were used as observation monitoring wells during the sparging test: Monitoring Approximate Radial Distance Well from AS-1 (feet) MW-38 6 MW-43 12 MW-19 80 MW-20 87 MW-18 90 MW-32 190 MW-17 305 MW-13 385 MW-14 480 MW-15 515 MW-16 530 The following parameters were measured in the observation wells periodically during the air sparging test: Parameter Units of Measure Monitoring Instruments Depth to Ground Water Feet below ground surface(bgs) Electronic Water Level Indicator(Slope Indicator) Well Casing Airspace Photoionizable Parts per million(ppm) Photovac MicroTip 2020 Photoionization Vapor Concentrations Detector(PID) Well Casing Airspace Combustible Parts per million(ppm) Bacharach TLV Combustible Gas Indicator Vapor Concentrations (CGI) iNell Casing Airspace Oxygen Percent(%) Gastechtor Model 32520X Well Casing Airspace Carbon Dioxide Percent(%) Gastechtor Model 32520X Ground Water Dissolved Oxygen Milligrams per liter(mg/I) Orion Model 835 and Oxygard MK I (DO) Portable DO Meter All downhole instruments were decontaminated before use in each well using an Alconox wash followed by a distilled water rinse. One round of subsurface measurements was performed on June 1 before initiating the air sparging test. The monitoring data before, during and after the air sparging test are summarized in Table 7. Ground water samples were obtained from MW-3 8, MW-18, MW-19 and MW-20 on June 3 and June 5 during the air sparging test and on June 12,three days after completing the test. These data were compared to data from the routine monthly ground water sampling events from the same wells on May 14 (two weeks before the air sparging test) and June 24 (2.5 weeks after the G e o E n g i n e e r s 20 File No. 0894-002-00/081198 I ' FINAL DRAFT air sparging test) to evaluate the possible short-term effects of air sparging on ground water contaminant concentrations(discussed further in Section 13.1.4.6). 13.1.4 Data Interpretation 13.1.4.1 Injection Pressure and Flow Rate. The minimum pressure calculated to overcome the hydrostatic head in AS-1 head (before sparging) was about 14.3 pounds per square inch gauge(psi). Injection pressures and flow rates during the air sparging test are summarized in Table 6 and are illustrated in Figure 12. The test was performed in three continuous"steps:" • Step 1: June 1 to June 4 An injection flow rate of about 2 standard cubic feet per minute (scfm) was used for the first three days of the test. The stabilized injection pressure at this flow rate was about 16 psi. • Step 2: June 4 to June 5 The injection flow rate was increased to 3.5 cfm; the stabilized injection pressure at the 3.5 cfm flow rate was about 19 psi. • Step 3: June 5 to June 8 The injection flow rate and pressure were decreased to 2 cfin and 16 psi for the last 3 days of the sparging test. Observations during gradual shut down of the air sparging test on June 8 indicated that the flow reduced to zero at a pressure of about 15 psi. 13.1.4.2 Ground Water Elevations. Depth to ground water measurements in the observation monitoring wells before, during and after the air sparging test are indicated in Figures 13 and 14. The ground water elevation in MW-43, situated about 12 feet from AS-1, appeared to` be more influenced by sparging than other wells. Ground water in MW-43 exhibited a characteristic"mound"with a rise of about 1.5 feet during the first step of the sparging test and a rise of an additional 1 foot(about 2.5 feet total) during the second step. Ground water elevations in MW-43 also exhibited a characteristic decrease in elevations after sparging shut down. The apparent absence of mounding or ground water elevation fluctuations in MW-38 during sparging (Figure 13) is likely because of lateral and vertical heterogeneity in the subsurface conditions. Ground water elevations in the remaining observation wells monitored during the sparging test did not appear to be significantly influenced by air sparging at AS-1 (Figure 14). Ground water elevation fluctuations in these wells are attributed to natural variations in background water elevations. 13.1.4.3 Ground Water Dissolved Oxygen Concentrations. Dissolved oxygen (DO) in ground water is one of the best indicators of the air sparging radius of influence. Figure 15A presents a graphical illustration of the ground water dissolved oxygen concentrations during air G e o E n g i n e e r s 21 File No. 0894-002-00/081198 FINAL DRAFT sparging. Dissolved oxygen concentrations in MW-38 and MW-43, the two wells nearest to 1AS-1, were notably influence by air sparging and were between 8 and 11 mg/1 during air sparging. Dissolved oxygen concentrations of this magnitude generally provide sufficient oxygen for effective degradation of hydrocarbons. Dissolved oxygen concentrations -in (monitoring wells MW-18, MW-19 and MW-20 (located about 90 feet downgradient of AS-1) were between 2 and 3 mg/1. Dissolved oxygen concentrations in MW-18, MW-19, MW-20 and ,the remaining observation wells monitored during the air sparging test did not appear to be ,significantly influenced by the air sparging pilot test. Because of a malfunctioning dissolved oxygen meter, DO measurements between June 1 and June 4 were not considered reliable. Therefore, DO measurements obtained in the monitoring wells on June 24 were used for comparison measurements of nonsparging conditions to evaluate the effects of air sparging. Ground water dissolved oxygen concentrations within the dissolved TPH plume and outside the plume on June 24 are shown in Figure 15B. Measurements suggest that"background" dissolved oxygen concentrations in the aquifer are in the range of 3 to 6 mg/1. Ground water dissolved oxygen concentrations within the plume are generally less than 4 mg/1. These concentrations are generally similar to those measured at other sites with similar aquifer characteristics and dissolved petroleum hydrocarbon contamination. 13.1.4.4 Well Casing Airspace Oxygen and Carbon Dioxide. Oxygen and carbon dioxide concentrations measured in the vadose zone at MW-38 and MW-43 during sparging are ;shown in Figures 16 and 17. As illustrated in these graphs, oxygen and carbon dioxide concentrations in the unsaturated zone were between about 2 and 8 percent before the sparging test. These concentrations are indicative of oxygen-depleted conditions with higher than ambient carbon dioxide likely due to natural degradation of hydrocarbons. Within about 24 to 48 hours after initiating sparging at AS-1, oxygen and carbon dioxide concentrations became representative of ambient air conditions with about 19 percent oxygen and less than 1 percent carbon dioxide. Well casing oxygen concentrations also increased significantly in MW-19 and MW-20 within about 24 to 48 hours after initiating air sparging (Table 8). These findings Confirm that the injected air was migrating through the saturated zone and into the unsaturated zone as a result of air sparging at AS-1. Changes in well casing oxygen and carbon dioxide concentrations were not significant in the remaining wells monitored during the sparging test. 13.1.4.5 Well Casing Airspace Photoionizable Vapor Concentrations. Figure 18 presents graphs of vapor concentrations measured in observation monitoring wells during the air sparging test. Well casing photoionizable vapor concentrations increased to between about 100 and 300 ppm in MW-38 and MW-43 within 24 hours after starting the air sparging test at AS-1. The concentrations in these wells generally decreased over the remainder of the 7-day test. Vapor concentrations in MW-18, MW-19 and MW-20 increased notably(up to 800 ppm in MW-19) on G e o E n g'i n e e r s 22 File No. 0894-002-00/081198 FINAL DRAFT the third and fourth days of the test, apparently due to increasing the injection flow rate and pressure during Step 2 of the test. Vapor concentrations in MW-18, MW-19 and MW-20 also decreased over the remainder of the test. Vapor concentrations did not change significantly in the remaining wells monitored during the sparging test. _ Interpretation.of these data suggests that increased vapor concentrations due to sparging are relatively short term (several days)and that vapor concentrations generally decrease and stabilize after several days of continuous sparging. This interpretation is consistent with the presence of only limited-amounts of the lighter and more volatile gasoline-range hydrocarbons in the smear zone. These data also indicate that volatilized hydrocarbons in the vadose zone migrated at least 90 feet from the sparging point (MW-19). This relatively long migration distance is likely the result the relatively permeable alluvial sand and gravel above the water table throughout the site area. 13.1.4.6 Ground Water Sampling. Ground water samples were obtained from MW-38, MW-18, MW-19 and MW-20 on June 3 and June 5 during the air sparging test and on June 12, three days after shutting down the air sparging test. The June 3 and June 5 data were compared to data from the routine monthly ground water sampling events from the same wells on May 14(two Weeks before the air sparging test) and on two occasions after the air sparging test (June 12 and June 24) to evaluate the possible short-term effects of air sparging on ground water contaminant concentrations. These ground water chemical analytical. data are summarized in Table 8. Figure 19 illustrates the ground water TPH concentrations before, during and after the air sparging test. Review and comparison of the ground water chemical analytical data indicate that sparging (caused a short-term increase in contaminant concentrations in nearby wells, with the most dramatic increase in MW-19 located downgradient of AS-1. 13.2 ENGINEERING JUSTIFICATION: AIR SPARGING 13.2.1 Design Criteria, Assumptions and Calculations Based on the conceptual design information developed at this time,the following preliminary design criteria are applicable to the AS and vapor recovery systems: Basis for Design Parameter Design Criteria Criteria Air sparging well maximum depth 25 feet bgs Pilot test and subsurface geology Air sparging well radius of influence 15 feet Pilot test Air sparging well spacing perpendicular to ground 30 feet Pilot test 'water gradient Air sparging linear segment spacing parallel to ground Approximately 100 feet Pilot test and best water gradient professional judgment Estimated Pressure Requirements for Each Branch: G e o E n g i n e e r s 23 File No. 0894-002-00/081198 FINAL DRAFT • Basis for Design Parameter Design Criteria Criteria Hydrostatic head at base of sparge well screen 6.5 psi(180 inches water Appendix D column) _ Air entry pressure into formation 2 psi Pilot test System pressure losses due to pipe friction,elbows, Calculation and best instrumentation professional judgment Total System Optimum Operating Pressure 10.5 psi Airflow rate at each sparge wellhead 2 to 5 scfm Pilot test System air flow rate West Branch=2 to 55 scfm West Branch=11 wells at 2 to 5 scfm East Branch=2 to 40 scfm East Branch=8 wells at 2 to 5 scfm Maximum rate of gasoline and diesel vapors 348 lb/day total assuming all Appendix D generated(estimated): wells operating Maximum rate of benzene generated(estimated) 0.038 lb/day assuming all wells Appendix D operating Vapor Recovery Extraction Rate 100 scfm minimum Air injection flow rate is approximately 95 scfm(see above) Vapor Treatment Performance Criteria 95 to 99.9 percent destruction Equipment performance or removal efficiency for volatiles 1 ' The preliminary criteria for radius of influence, well spacing and airflow rate are based on ,data interpretation from the air sparging pilot test described in Section 13.1 and our best professional judgment and experience with air sparging at sites with similar geologic conditions. 'Calculations of the minimum air injection pressure and estimated rate of volatiles generation are presented in Appendix D. 13.2.2 Selected Treatment Option Containment Efficiencies Containment (vapor removal) efficiencies for the vapor extraction system are described in .Section 13.2.1. '13.2.3 Documentation of Effectiveness Air sparging is commonly used to treat saturated soil and ground water contaminated with volatiles and biodegradable hydrocarbons. Air sparging has been used effectively at many sites in western Washington with conditions similar to the OPLC Maplewood site. i13.2.4 Demonstration of Compliance with Cleanup Requirements Compliance with cleanup levels at the site will be demonstrated by sampling as described further in Section 18.3 and 18.4. The engineering justifications for these elements are based on 'Ecology guidance, and past experience at similar sites. G e o E n g i n e e r s 24 File No. 0894-002-00/081198 1 � FINAL DRAFT 14.0 SPILL CONTROL AND DESIGN SAFETY MEASURES 14.1 CONTAINMENT STRUCTURES AND LEAK DETECTION No fluid containment structures are associated with the air sparging system or the vapor recovery system with the exception of a condensate knock-out drum upstream of the vapor recovery vacuum blower. The condensate drum will have secondary containment along with a high level shut down sensor. Leak detection for the aboveground condensate drum will be monitored visually. 14.2 RUNOFF AND EROSION/SEDIMENT CONTROLS Temporary erosion and sediment control plans will be prepared by the remedial contractor and submitted to the City of Renton before construction begins. Erosion and sediment control measures such as straw bales,'soil berms and filter fabric will be used as needed to direct runoff away from temporary stockpile areas, and to prevent any accumulated precipitation from leaving stockpile areas. In most areas of the site,the surface is not paved. This surface allows for general reinfiltration of precipitation. A street sweeper will be used if necessary to keep public access roads free of sediment from construction activities. 14.3 LEVEL SENSORS AND SHUTOFFS Level sensors will be checked at least monthly to verify that they are working properly and that automatic shutoffs are functioning. The results of sensor checks will be reported on the routine system operation and maintenance field reports. Any corrective actions necessary will be reported in quarterly progress reports. 14.4 START UP TESTING During system start up, all components of the systems will be checked to verify that equipment has been installed and operates in general accordance with the design performance criteria. 14.5 SYSTEM AS-BUILTS System as-built drawings will be prepared during the construction of the air sparging equipment and reactivation of the vapor recovery system. As-builts will be maintained in the isystem operation and maintenance manual at the site and will be submitted to Ecology. 14.6 DESIGN SAFETY All construction activities will be completed in accordance with design criteria, OSHA and ;state regulations for construction safety and work at hazardous wastes sites, and local standards of practice for construction. The entire system will shut down if the vapor extraction (vacuum) pumps or vapor treatment units fail. G e o E n g i n e e r s 25 File No. 0894-002-00/081198 j I FINAL DRAFT 15.0 RESIDUALS MANAGEMENT The matrix below outlines the residuals that may be generated during construction of the air sparging system and the method for managing each: Construction Residual Source Disposition Soil with residual petroleum Air sparging well installation Stockpiled in accordance with best management drill cuttings practices(on plastic or pavement and covered with plastic sheeting)pending landfill disposal. INoncontaminated soil Spoils removed during Reuse as backfill. trenching Waste Water Decontamination rinse Sanitary sewer discharge under Metro water,well development discharge authorization. Water will be aerated water before discharge,if necessary. Used personal protective equipment Construction activities and Used PPE and noncontaminated solid waste (PPE),such as TyvekTM,gloves and worker safety. residuals will be placed in a municipal trash respirator cartridges and noncontam- dumpster serviced by a permitted solid waste Mated solid waste such as plastic disposal company. bags, rope and plastic sheeting Residuals will be stored in a designated area. The residuals management area will be secured within the site fence and labeled to prevent access by unauthorized personnel. 16.0 SITE-SPECIFIC CHARACTERISTICS AFFECTING DESIGN/CONSTRUCTION 16.1 SURFACE FEATURES 6.1.1 Site Access The proposed construction areas are generally accessible via adjacent rights_ of way. Construction zones will be flagged and entry prohibited to unauthorized personnel. 16.1.2 Probability of Flooding The site is not in the FEMA-mapped 100-year flood plain of the Cedar River and therefore is not expected to be subject to flooding during or after remedial activities. Remedial activities would take place between July and September; given the downstream location of the site area and the time of year proposed for construction, water levels in the river are not likely to impact construction. During precipitation events, surface water would be conveyed via existing storm drainage features in the site area. 16.1.3 Seismic and Slope Stability The site is located within classification Zone 3 according to the Uniform Building Code (UBC). The typical design criteria for Zone 3 areas assume a 500-year earthquake (500 year recurrence interval) of Richter magnitude 7 to 7.5 with horizontal ground accelerations of approximately 0.3g. Because the surface topography of the site area proposed for construction is essentially flat, slope stability does not pose a concern for remedial construction. G e o E n g i n e e r s 26 File No. 0894-002-00/081198 FINAL DRAFT 16.1.4 Probability of Wind Storm Damage Given the site's location and the geography of the area, there is a low probability of wind damage to equipment related to the remedial action planned for this site. Furthermore, most of the piping to sparging wells will be situated below grade. 16.1.5 Temperature Extremes It is unlikely that low temperature extremes during construction will occur during the planned - summer or fall construction. High temperatures (greater than 80 degrees Fahrenheit) in the summer could affect temperature comfort levels for workers protected in Level D or Level C. The Site Safety Plan will address precautions for workers to take in the case of heat stress. High temperatures also could cause equipment to overheat. Equipment usage and temperatures will be monitored during activities to prevent damage or potentially unsafe conditions. All equipment to be used will be UL approved and intrinsically safe with thermal overload protections. 16.1.6 Precipitation Remedial construction activities are planned for the drier summer months to minimize possible difficulties caused by precipitation. Grading of the site surface and erosion and sediment control measures will be used to divert surface runoff away from areas where soil is exposed 'during pipe installation. Sump pumps are used to remove precipitation that enters subsurface vault stations associated with the remedial equipment. 16.1.7 Local Planning and Development Issues The proposed remedial action is not expected to conflict with any local planning and development issues known to OPLC at this time. 16.2 OTHER FEATURES 16.2.1 Soil Soil conditions beneath the site area are described in Section 2.4.2.2. 16.2.2 Surface Water The nearest surface water body is the Cedar River, south of the downgradient margin of the dissolved-phase plume. Remedial actions are not expected to adversely affect the Cedar River. 16.2.3 Ground Water The depths to ground water in the shallow aquifer at the site range from approximately 10 to 18 feet below the current site grade. The limited trenching necessary to install piping associated with the air sparging remedial option will not extend to the shallow water table zone. G e o E n g i n e e r s 27 File No. 0894-002-00/081198 FINAL DRAFT 16.2.4 Air Quality Attainment Area Status = Health and safety air quality monitoring will take place within the active work areas, and periodically at the downwind site perimeter to ensure that workers or the public are not exposed to harmful vapors during construction. Engineering controls or specific work practices will.be employed to reduce vapors and/or nuisance odors if detected. The worker-breathing zone will be monitored in accordance with procedures described in the Site Safety Plan to evaluate potential, exposures. Work practices will be modified as needed to mitigate vapor generation. Vapor concentrations associated with the vapor recovery system will be monitored regularly as described in Section 18.1. The reader is referred to Section 18.2 regarding protocol for vapor monitoring in nearby residential confined spaces. 17.0 CONSTRUCTION TESTING/QUALITY CONTROL 17.1 SOIL SAMPLING DURING AIR SPARGING WELL DRILLING Soil samples will be obtained at approximate 5-foot depth intervals during drilling for the air sparging wells. The samples will be field screened and retained for possible chemical analysis. In general, samples to be analyzed will be those from the zone of water table fluctuation and/or the samples with the highest field screening results. Samples will be submitted for chemical analysis of BETX by EPA Method 8021B and gasoline- and diesel-range hydrocarbons by Ecology Methods WTPH-G and WTPH-D,respectively, or approved equivalents. 17.2 COMPLIANCE WITH DESIGN System installation performed by a remedial contractor will be monitored to confirm that the installation is completed in general accordance with the design and construction specifications. Monitoring will be performed under the direction of a licensed, professional engineer registered in Washington. Monitoring results will be documented in daily field reports and summarized in a final construction report to be submitted to Ecology. 17.3 PRESSURE TESTING FOR AIR SPARGING AND VAPOR RECOVERY PIPING Newly installed piping will be pressure-tested prior to backfilling and after backfilling to insure that there are no leaks. The pressure test will involve isolating segments of piping, applying a positive pressure of about 50 percent above the design value and verifying that this pressure is maintained for at least one hour. The results of pressure testing will be reported in the system as-built or operation and maintenance (O&M) manual to be submitted to Ecology after ;system installation. Existing vapor recovery piping associated with VRS-1 will be checked during excavation of piping trenches for new piping. Because of the age and previous uses of the piping, OLPC proposes that it be exposed and inspected and pressure-tested. Any pipe segments in need of 'repair will be isolated and replaced with new piping or repaired. G e o E n g i n e e r s 28 File No. 0894-002-00/081198 1 FINAL DRAFT 1 17.4 START UP TESTING Air sparging equipment will be checked after installation to verify that the equipment functions properly. An equipment start up period will occur for the first several days of operation to verify that all controls function as designed. Start up monitoring results will be documented and summarized in the system installation report. 18.0 COMPLIANCE MONITORING 18.1 AIR SPARGING SYSTEM AND VAPOR RECOVERY MONITORING Routine system operation monitoring for air sparging and vapor recovery will include the following, at a minimum: • Visually observe aboveground equipment to confirm proper operation and performance. • Record system air pressure at the air sparging compressors, and individual air sparging well pressures at the manifolds. ,• Record air sparging injection airflow rates for operating air sparging wells. • Record depth to ground water, ground water dissolved oxygen and well casing combustible vapor, oxygen and carbon dioxide concentrations in selected monitoring wells to evaluate air sparging system performance. • Record vapor recovery system vacuum pressure and flow rate. Measure concentration of combustible vapors in the recovered vapors before and after treatment. Obtain vapor samples on approximately a quarterly basis for chemical analytical testing of BETX and gasoline- , range hydrocarbons. Modify system valves as necessary to optimize performance. This may include adjusting the injection pressure and flows at selected air sparging wells. System operational data will be documented in daily field logs and reported in quarterly progress reports to be filed with Ecology. Recommendations on significant changes to the 'operation and monitoring program, such as pulsing or additional wells, will be addressed in the - progress reports. Progress reports also will contain an evaluation of the system performance and effectiveness. 18.2 CONFINED SPACE VAPOR MONITORING Residential crawl spaces and basements will be monitored regularly during air sparging activities activities in accordance with protocol outlined in GeoEngineers' st-;xx':1998;letter"Revised Vapor Mothto iootistocol,',' 18.3 GROUND WATER CONFIRMATIONAL MONITORING Ground water samples will be obtained quarterly in accordance with the following schedule: Monitoring Frequency Wells to be Monitored Quarterly MW-13 through MW-20,MW-30,MW-32,MW-39 through MW-41 and MW-43. Semi-Annual MW-2,MW-3,MW-4,MW-12, MW-25,MW-34,and MW-42 Shallow. GeoEngineers1 . 29 File No. 0894-002-00/081198 FINAL DRAFT The samples will be submitted for chemical analysis of BETX by EPA Method 8021B, and gasoline- and diesel-range hydrocarbons by Ecology Methods WTPH-G and WTPH-D, or approved equivalents. The results of routine ground water monitoring will be reported in quarterly progress reports. Progress reports will be submitted to the City of Renton and Ecology. Proposals to modify the Monitoring program, if appropriate,will be addressed in the progress reports. 18.4 SOIL CLEANUP CONFIRMATION MONITORING Soil samples would be obtained after operation of the air sparging system operation to evaluate residual petroleum concentrations in soil relative to appropriate cleanup levels. The confirmation monitoring plan will be detailed in a future submittal to the City of Renton and Ecology. b s, 18.5 PROPOSED EVALUATION CRITERIA FOR TERMINATION OF AIR SPARGING Monitoring Description Expected Trend Minimum Termination Comments Parameter Criteria Ground water These data will serve Concentrations of 1.The system will be shut Sparging wells near the sampling and as the primary criteria dissolved down when MICA Method points of compliance may testing for BETX for evaluating whether hydrocarbons in A ground water cleanup need to be shut down for and TPH. sparging has ground water may levels,as evaluated using at least 2 weeks before effectively treated increase in the short MICA statistical guidance, sampling events to allow residual contaminants term(1 to 3 months) are met at the points of ground ground water in soil and ground but will decrease over compliance for at least two conditions to stabilize and water. time during continued consecutive quarterly provide representative system operation. sampling events when the data. Some short-term contaminated soil is "rebound"could also saturated and below the occur after shut down. water table. 2. If post-shut down monitoring indicates that wells are not in compliance for more than two , consecutive quarterly sampling events,then the air sparging system will be restarted. 3.Attainment of applicable soil cleanup levels in soil, evaluated using MTCA statistical guidance. Vapor recovery A measure of the rate Vapor recovery rates 1. Asymptotic conditions for The system will be pulsed rates and vapor of volatiles generated are expected to vapor recovery rates. on a daily cycle.Vapor _ concentrations by air sparging and decrease exponentially 2. Pre-treatment vapor concentrations will captured by the vapor and reach asymptotic concentrations less than probably"spike"following recovery systems. conditions over time. 500 ppm(as measured by a each pulsed restart. CGI)with all wells in operation. G e o E n g i n e e r s 30 File No. 0894-002-00/081198 FINAL DRAFT I " 19.0 HEALTH AND SAFETY CONSIDERATIONS 19.1 SITE SAFETY PLAN ' Copies of the site safety plans utilized by OPLC personnel, the remedial contractor and the environmental consultant will be kept on site and will be made available to authorized visitors_to the site for general information. 19.2 PROTECTION MONITORING DURING REMEDIAL ACTIVITIES Air monitoring and sampling will be performed to document exposure levels and to assure that necessary precautions are taken to protect on-site personnel and the general public. Real- time air monitoring and possible air sampling will be conducted during all site activities that have a potential for generating chemical exposures. The Site Safety Plan contains a description of action levels and instruments for air monitoring and sampling. 19.3 CONSTRUCTION PROCEDURES PERTINENT TO HEALTH AND SAFETY The followingmeasures will be employed to assure that remedial activities conform to site health and safety requirements: • Copies of the Site Safety Plans will be maintained on site at all times during remedial activities. • Site personnel will conduct a detailed pre-construction safety meeting. At that time, all aspects of the Site Safety Plans will be reviewed. • Brief tailgate safety meetings will take place before the start of work each day. The site personnel will discuss safety issues related to the work to be performed. r Daily field logs will be prepared that document site safety meetings and events and document the results of health and safety air monitoring. G e o E n g i n e e r s 31 File No. 0894-002-00/081198 - - TABLE 1 (Page 1 of 8) SUMMARY OF GROUND WATER MONITORING WELLS CHEMICAL ANALYTICAL RESULTS OPLC, Maplewood Neighborhood, Renton BETX3 W-T-PH-G-4 W-T-PH-D 5 Well Casing (EPA Method 8020 or 8021 B) (mg/I) (mg/I) Combustible Vapor (pg/I) Gasoline Diesel Monitoring Date Concentration2 Well' Sampled (ppm) B E T X C7- C12 C12-C24 MW-2 01/29/88 320 <0.5 <0.5 <0.5 <0.5 -- -- 05/26/89 170 <0.5 <0.5 <0.5 <0.5 -- -- 11/28/89 <100 <0.5 <0.5 <0.5 <0.5 -- -- 02/27/90 140 <0.5 <0.5 <0.5 <0.5 -- 06/26/90 <100 <0.5 <0.5 <0.5 <0.5 -- - • - 01/23/91 100 <0.5 <0.5 <0.5 <0.5 -- -- 07/26/91 <100 <0.5 <0.5 <0.5 <0.5 -- - • - 01/07/98. 410 <0.500 <0.500 <0.500 <1.00 <0.0500 <0.250 04/06/98 <100 <0.500 <0.500 <0.500 <1.00 <0.0500 <0.250 8 07/21/98 <100 <0.500 <0.500 <0.500 <1.00 <0.0500 <0.250 87 500 -- -- MW3 03/23/ 05/28/87 630 <0.2 <0.1 <0.4 <0.18 -- -- 01/29/88 <100 <0.5 <0.5 <0.5 <0.5 -- -- 02/20/88 120 :': 5 ENNii! 1.4 3.1 4.3 -- - 03/29/88 <100 <0.5 <0.5 <0.5 <0.5 -- -- ............................................................. 04/28/88 148 1.2 12 0.7 ?"' -- -- .............................. 05/26/89 140 Ininganing 1.0 <0.5 0.7 -- -- 11/28/89 <100 <0.5 4 0.8 1.8 02/27/90 <100 1.1 1.1 <0.5 <0.5 -- - • - 06/26/90 <100 0.6 2.3 <0.5 2.5 -- -- 01/23/91 <100 <0.5 <0.5 <0.5 <0.5 -- -- 07/26/91 <100 <0.5 <0.5 <0.5 <0.5 -- -- 01/07/98 250 <0.500 <0.500 <0.500 <1.00 <0.0500 <0.250 04/06/98 -- <0.500 <0.500 <0.500 <1.00 <0.0500 <0.250 8 07/21/98 <100 <0.500 <0.500 <0.500 <1.00 <0.0500 <0.250 MTCAb Method A Cleanup Levels 5 30 40 20 1.0 ' Notes on Page 8 of 8 TABLE 1 (Page 2 of 8) . . BETX3 WTPH-G 4 WTPH-D 5 Well Casing (EPA Method 8020 or 8021B) (mg/1) (mg/1) Combustible Vapor -(pg/1) Gasoline , Diesel- Monitoring Date Concentration2 Weill Sampled (ppm) B E T X C7-C12 C12 - C24 ,y,,,•••••:••:.........• .........:•:•:•:•:•:•:•:•y. •••••••••••-••••.•...•..--••-• MW-4 03/23/87 180 :iiiiiiNg::::gM:Egii:Mi::: 7 4 i:i:::::::K:i:i*i:::13::.:i:::i:Mi::.:i: -- -- ................. .................................... 05/28/87 280 <0.2 <0.1 <0.5 <0.5 -- -- 05/26/89 180 <0.5 <0.5 <0.5 <0.5 -- -- 11/28/89 <100 <0.5 <0.5 <0.5 <0.5 -- -- 02/27/90 150 <0.5 . <0.5 <0.5 <0.5 -- -- 06/26/90 2,200 <0.5 <0.5 <0.5 <0.5 -- -- 01/23/91 100 <0.5 <0.5 <0.5 <0.5 -- -- 07/26/91 3,200 <0.5 <0.5 <0.5 <0.5 -- -- 12/02/97 -- <0.500 <0.500 <0.500 <1.00 <0.0500 <0.250 01/07/98 360 <0.500 <0.500 <0.500 <1.00 <0.0500 <0.250 04/06/98 200 <0.500 <0.500 <0.500 <1.00 <0.0500 <0.250 8 07/21/98 <100 <0.500 <0.500 <0.500 <1.00 <0.0500 <0.250 . . . MW-11 04/20/98 <100 <0.500 <0.500 <0.500 <1.00 <0.0500 <0.500 ............................................................................................................................... --------------------------------------------------------- .........-------,,,,,,,,,,:.x.:,,,,,,,,,,,,,,,,,,,..:......:•-..,..--,:.:,:.:-,..:,:,,,..,.,,,.,.....,,,,,, MW-12 03/23/87 280 "i.i'ii::Ii:::::M8r;.30.0::i:Mi.::•:ii i::::?:iiii:::i:.ii44000iiiiiii:'::ii:i:iii;:]ii::7.0:100:.i:'::.:iiiii:iiNgii00.MOD.igiUi:ii -- -- ' .':i*:?::-:•::::iMi::::'::::::MME:::::::::ii.:.:E::: :::::illii::: ::Rg::::::::::ii.....:;i::::i::::::::N:WM::::.]::::S7ii.•:i.i:::.::i::'::::.W:i.ii:::i::::::::: 1:::e!i::ii.. 05/28/87 310 'ii:Miat 103:::::0::::: ::::ff:::ii.':.:.g:g:M.O.:.§::::::.iii:gi.iii•::Xii]iniA29KRiiin ::i::::Mi§§$0.0:•ii::::i:g....iii:i.: -- -- ::::::::::iiii:.:;.1:iiiiigii3:.inggi':::iiiin 06/30/87 280 000:g::i::::::gig.::::::::::iii:;1100::::::::]::::aii MiN:aii3rit,li.::i.ei: -- Rigiii:•Miiiiii::.:iiEi:iii:X:i:•i:. :;:iiM:::!iiii:::iiiiiiiii:§iMin::i:::ilMi:AM:aWiii:iii.:::ggii:::&:§:aiii.iii* :::.:•: 07/27/87 800 'i.:..'i.i:...::i.::•:.in3O-..0...i::i::i::iMiliiiiiii ii:Ii:::•:ii::::iiii.1i1::3g.....•;::iil.:i!iii11::::::::.i:1] :::liiiii:::::511:0-1:ii:.g.i:.i:.:i.' -- 08/31/87 2400 30.0iiiiiiMia]i;!.i:i:.::iliN:300i::ii:li::iii.0:::.::.:ii.:::iiiiiiel...M.;i;i:i.:1:ii.::1:li:::: :::Mi2-600;i::i::::i:::,:.:::i.Z::i. -- -- .§niiminllili;li :::::: ::i.ii.:::.:i..:::iiiii:i:i:iiiiii.:::::giSigilligNM:•:*':::.r:::n:RMIi'g':iiliilii::.:iiiiMi:i::::i•.:i:::i:iiii:iin:i:.::iiil:i.: 09/28/87 <100 •.i:i.liini.i.::::.iji:a!:"..:::.:49cii:::Iiii.iaigi':..iiii:•.iiiiiiilii::::::Iiii40.CM::::::: ::::i2M0.0.Miff -- iii:ii:iiiiiiii::::iii::.::.iffinii.iN::.in;l1i::.:.i.::M:i.::."..E:Mli i.1::1•EiMMEThi.::::ii1::::liliMi.iiiingg::::.:.: 10/26/87 2000 gag:: ::4g(.1:*i:i*:i*::i:.:*i:::i:i:i:i::*•::i::::.::*Sgami:iai:i:i:x:i*:]:::iii:l.tiax:isi:if::•::: __:::i:x::.:::::::K:::::i*i*i:i*: 12/02/87 1,300 MiNiii;i:R7Ciiili::::]::::.:::i::•i ..:ii::::igigii350.iii;::::::::::i:::::::::::11i1;:iiiiiili960.::ERNgiii:::::47.0.17.'..i;M::::: -- -- :§iiiiiigii:iii§:i.::ilii:i:::::::::iiiiiii::::1:::::::.iii: ::::: .:igi .:ii::::::::iiIii.illKagii:i.liMg 01/20/88 140 iii:::ii::i::::::::::.1iliifi.;).0. 1ii.:ig:::gi:: :..:i.;iNliagi'ME.•:• :. :::.:i:::::*i:::240::iss.:KoK*.*:i*:*::i:i:i21360................... -- -- 'iiiiiffigi!:::.M:::Miii'::i gi'iai.MMM:::giiianigiN.:::i.::•ilr.: ::::Mi.ii.i:AI:i.::::Me:Ril 01/29/88 160 SiiiONg .O•ii:Mig:::ilir]iliiiglignA:CON':: -- -- s-::i:i:K*.:::.:i:i::::.*i:isx:::::::::::.:::.:10i:i*.:*.....................................................................................,..................................,...,............,....,.......,. 02/29/88 400 Mili:;:iMied:i.:MiNiil'..::i:::::: ::::::::::::iggialii.:ii.:::ii.:''.iiiiIi•ii:::;:ii::::M:10::::§Mi:::::4::iiiiii:ii§i:ii:ii:8.71Ci•:::: :::::iii!ii -- -- K*K:i:::x:x:::::M::;i1i::::Ii::1::::111iilE .!iiiMi:::Ma 03/29/88 150 1.07:i!ii::iig..i::::liN:::ii:iiiii.aiNi:tte:2:0:.:.::::::0:iii:•.itirOii:iiii:it::::::..1::::::t:g::::: ii.ig:',40CigiiRi::: -- -- .:.:::::ii.:.:::.Hii::::i::•:::•:..::::Nia:Mg:':.•:i::::::i.i.:.?;i:Mii.i1:::MME:.,.0i::i:•:Ii.f:.i:::::::% :::MM ifii:::::i::i.ii.:Mai:Ni:::::giiii:::ii.. 04/28/88 440 iMag:•::.7.:.5gi.::::.::'::::::':::iie::...:E:; !:::::::#.0.0.1ii:::a gn::]:::::: :nikiiiiii:::ii:::.Mili.iiii.:t t10:::::i'ii:::i:ii.: ................................................................................................. .............,......,:.:,....:.:.:.:. ............................................................................................................................... 06/22/88 790 VP:: :igg.ii::Iii.ffig::::::'i.M0.1::::::::::Mg::::::::E::::iiii1.40.::::::::ERtni:::,:::::1100:in -- -- .::::::::::::::::::::::::iiiii*::::giggR:.:::i?:i:iMii§:.ii:i:iii:::iiiiiiiiiii:.::::.::::i iii.:::iiig:.:iiii§ii::iiiigiii:i:i:i:iiMii ?:i::::gi•:::..:.:•:•::iii:M:.:giil::::?:i.:. 06/29/88 880 0.0:::::::RM.::i:::.i§i:i .........,.,..„..........„.........„.„.„.„.„...„.„.„.„.„...„........„.„..„.„...„..„.„.„.„.„...................„.„.„ -- • ................................................................................................ ............................................................................................................................................................. • MTCAb Method A Cleanup Levels 5 30 40 20 Notes on Page 8 of 8 • ), • 1 ' 4 i i ,. 4' i , 1 ' ---. r - , " - - '1 ."- - - -4 , 1, 4 ' ) - --, • . _ , J _ _ _ --. TABLE 1 (Page 3 of 8) BETX3 WTPH-G 4 WTPH-D 5 Well Casing (EPA Method 8020 or 8021B) (mg/I) (mg/I) Combustible Vapor__ (pg/I) -- - Gasoline -Diesel Monitoring Date Concentration2 Weill Sampled (ppm) B E T X C7- C12 C42 - C24 • MW-12 07/06/88 1,300 •••••-,•••••••••:,,,,,,,,:„:„.:. i'liiill•::::ggagiiiiggiTiligi igiiiiiininglifil iregfiliajtigalii:::::iiiiirkiV4elp: -- -- .i:im*.'*im::•:":"*:6:''':6f":''''''':%%'::' ::ii:::: i'i"::::•iiMir•iiMii:':i:1:i iN::::•iii::iii::::i•:"::::ii.ii:M:ggi:::::]::::::,%0:20q::414,i::: (continued) 07/13/88 880 <25 :•:Rii:iii.:::ii:Agi.::::::::::n gciii::iiiii**::57P:i:K:::*::::::',:i,i:i:i*Km:K47.9:iii:isi::::K*4 -- -- •••:•:•:•:•:•:•:•:•:•:•:•:•:•••••••:*i:i:4••i::.::.::.:i*:.:imi§ii::.:4•;:iigiiiii:Iii"::::ii.:i:.:•:Aii]g:::i: ,:i :4515::g::igii: 07/29/88 250 -- -- •.:..•••••:••••••••••••,•,,............-•••:-.,..••••• :Ii:iii:i:iii::"::•:ig:ii:§§:::i::iiii:i:j:?:":i 08/29/88 320 . '::: iNiMit-t1Wgi:ME 2.2 40 iiiiRlpiiiiii ............,................:::::::::::::. -- -- 09/29/88 . 240 <5 0 iiiliiitaiffialiggia iiiiiingg24.61•PiRMA7.0.::::::M -- -- •:''''::::::':::::::'::g:;iiiiiiiinan . . : .: . : :.ii..: .:••••••••:.f:ime..: 10/31/88 450 -- -- ::::::::::::::::::::::::::::::::,,,::::":::::::::"::::':::"::::::: " "ii§Mii!":iiiigg:::::§ii••.*:iii•:i'::.iiin:ii*:*i:i::::::::•••i:i*•::::•::::i:::i*::.:i:ii:••.:•.::iii:M'igii.ii!4:::•m::::1•.. 11/29/88 2,200 <25 iig:::•:ii!!iiiMANing i!.:: ::giiiiin4041i:Niiiiiiiiiii,iiiiiiiiiiiiiinlOgigiig. -- -- ................„............„...w.w.„..............................-,.................... ••••••••••••••••••••••••••••...................-.........--............................„.........„:.:„.:„.„.:.:„..:.:.:.:,.:.:„.„.:„.:„„:„.,:.:.,.,..:....:.,.., 12/28/88 1,300 MINE41 ::i::ig:iMiNOidMe::::iMM6t7.:MiNiPmgm7.::19.mg -- -- •••........-....••••••••....••••••••••.-.................................„,...,.........,.................................,.................„...........,........„,.........,.....................................„............................................ 05/26/89 1,200 <25 <25 <25 -- ................................. ........w"-,........%, IEEMMOINigrnani. 01/27/89 1,100 <25 -- -- ........................,.........,......... .•••••••••••••••••..............-.......... ..........„............„..................................,.. „......,..„......................:„.„,:.:„„ 02/28/89 980 M::.:ii.N:;i:::::!1.*ii1::•;:imi§m 9 19 620 -- -- .:.:.:.:.:.:.:.:.:„.:.:.:.:.:.:•:.......:.,:•:•:•,•:•:•:•:•:•:•:. 05/26/89 1,200 <25 •<25 <25 :::•]i:2:::::::g2.3.6:Mi:§•:":4?:-. -- -- . .................................„.:.„:„.4.:„... 08/18/89 790 <5 21 8.5 :::iiiiiii•:i::::.i:::11:.12.8:::.iii:.iiiiiiiiii: -- -- •••••••••••••••••••••,,,,,,:•:•:•,:•:•:•:•:•:::: i•-:•••:•-•:•::•••:•••:••:•••:•••:•••:•••:•••:•••:•••:•••:•:•:•:•:•:•.:,i:,,..::•.:•••::•iiiiiiiii:•••.,• 11/28/89 2,000 -::':'•4::::::::::::::::::::::::: 10 Iiin:g2giP":::::M:§iiii -- -- 02/27/90 •••••••••••••••••••••••••••••••••••••••••• . i-:::i•:::-:::i:i•:':i"::"::?:?:::.g.?:i§g•:•:i:i:. 1,200 4.3 ::::i:::i:iii:igii::2,45iiga:::ig::: 3.1 i.:.:..:.::.:.::.:. :.:.:.....:.. . .....,...................:,.:.:.:.:„... ii•:*•:•::1:Iii:::::1:-P..cl....:::::*..:::T::::::.:::::. -- ...„................-.................... • 06/26/90 1,200 <5 21 <5 •":":::ii::::::?':i1::::::•'.iilfigi:ii:.:•:iiigi:••:.:i] -- -- 01/23/91 3,000 2.0 10 2.4 -- .:.,:.:•:,•:•:•:•:•:•:•:,,,,•:•:•:•:•:•:.:•:•:•:, 07/26/91 2,800 1.0 4.2 <0.5 17 -- -- 01/22/92 8,000 0.6 0.5 <0.5 6.8 -- -- 07/22/92 1,600 <0.5 1.9 0.9 8.4 -- -- 01/22/93 2,000 1.0 1.1 1.2 7.0 -- 01/15/98 <100 <2.00 <2.00 <2.00 <4.00 "..ik•:•i.li::::i1:::•Iii:iiiiii::::.f:M•W]:]:::]iiiii:iMiii ••.::.::*::::K:i:i:.::::i:ii::::..:::::....::::::::::::::::::::::::::::::.::: .................................................„..................................,...............,.........,................. ............................................. ....................„................................... •••••••••••••••••••••••••••••••••••••••••••••••••••••••.....,...............................-........ ............................,................„._„......,..:.........,...............................................„.,„„,.:„. 04/06/98 100 <0.500 <0.500 <0.500 <1.00 : , 05/14/98 <100 <0.600 <0.500 <0.500 <2.00 0.293 0.618 06/24/98 <100 <0.500 <0.500 <2.00 <1.00 0.205 0.616 07/21/98 <100 <0.600 <0.500 <0.500 ' • MTCA6 Method A Cleanup Levels 5 30 40 20 Notes on Page 8 of 8 • • TABLE 1 (Page 4 of 8) BETX3 WTPH-G 4 WTPH-D 5 Well Casing (EPA Method 8020 or 8021 B) (mg/I) (mg/I) Combustible Vapor (pg/I) -- - Gasoline Diesel Monitoring Date Concentration2 Weill Sampled (ppm) B E T X C7- C12 C12- C24 MW-13 01/07/98 <100 <0.500 <0.500 <0.500 <1.00 <0.0500 <0.250 04/06/98 <100 <0.500 <0.500 <0.500 <1.00 <0.0500 <0.250 6 05/14/98 <100 <0.500 <0.500 <0.500 <1.00 <0.0500 0.363 06/24/98 <100 <0.500 <0.500 <0.500 <1.00 <0.0500 <0.250 07/21/98 <100 <0.500 <0.500 <0.500 <1.00 <0.0500 0.473 ...............••-•............................................. ........--.................--..............--.-- ............. ................................................................................ ...... ...................... ............................................................................................................................... ............. ....................................................................................... ...................... 0 88 150 ::i<::E':#::: l:EE:%:EEEE<::E::EE::::#::::?:: ::: :::::<:::::::``::r. ., ....;;?% :EQi.ilii .' :.::::::::2<: -- -- MW 14 6/22/ .......��. �?.��. : .:::. ..: ::1i4�1�... .. ......] +�4�...:.. .....,»sr..�$Q4.....:: :............ ............................................. ........................... .................................................. ................................... .....im::..............................::g: .............. 06/29/88 14 0 -- 07/06/88 180 ;, 1,9QiX 1,$f...0 ;....;.; ;... ,i1Ot3 !300 O 3 88 <100 '•>ue,iy :#'•><##>'r'F#>:<::E:Ei>i>3>::1::d timi•EEE::EEE:EEEE'•:€<'•f 2 i7(.?E>:Eniii=;EE:::<#:E#••>: m iiiiii`:: 07/29/88 170 -- 7/ <`: >'>1:i 9Q4�z:::r<»:»:€ �:>:>>>�:t >'s::E>>�<'>>><'IU�O�REE>'::'»<.»:...... !�R......... < 00 -- -- 08 29 88 1 - .::::>:i?:: <250 <250 - -- O 9/88 140 :: 9,,,,:>< »>::>:> >::'3.'7U ::K:K:»>: 10/31/88 11/29/88 110 -- -- 12/28/88 170 -- -- ' ::>'::::::'.57tkE:E:E:>::>E:>:::E:E:>::>:>:>:1:5�::?::<:>::?:::>::�:;>::?::T7E?:>'•:>::::>'::>......>. 15001/29/89 -- -- O 8 89 180 :z E E• 33 >:> #:::> :> Mi:f6 31::is?EE:t:*i 8 '>.:01 :::" . -- 05/26/89 160 <5 3 10 16 -- -- < 00 -- -- 8 88 1 < 50 `?3'rs>::E:::;•...,;:•.:: -- --11/28/89 <1002 :»::::»::>:<1:<i#3t1!>:>'>:>:>::>: 3;2t�i::»::: .� :::�,qE:::€�::�: ............................................................ .............................. .......................................................................................... 02/27/90 <100 <25 »>>> C}:: j'E<:: # ' j.:<1fJt1> >:>:_<#>` >: .Ol::::::>> O 69 1 30 3 4 :»:> a::«6:::::i#>i iE<: ::>.:::i z>: 1 `::: :'::':::`:SEE::: 7/2 / 1 ::::::E:::t3a4:isi::'.:�:''>�:>:::::`:::::::::::''::::#�4E:E:E:E:E:>E:':s>':'•Es�:E:':'•>'•:a::E�`'."�..E�::>::>::»::>:>:>::::':: ........:1� ..................................�,.2................ < 00 :E: E�`:EEE»:' : :i -- --4 2.2 01l22J92 ::iii:-::i3$t�:::>::>::::><:>:>:>:» A9'.:::::<:#.................�.�OOEi»><: 3 -- 07/28/92 :::::::::36QE"E :':::EEE :::7:.$;:;:E: E:E:Ei:::E : : ::;�.,�..:.::::::::::. 01/22/93 <400 4.7 <2.5 10 E::E':':':4BO'::'::::::`::: -- -- 07/09/93 <400 <0.50 7.3 -- --7 0 9 19.9 4.05 -- 01/07/98 400 '':::'73 7`•`:":'`.`:%: : 25.9 4.21 :`::::`:::1:l##::::': ::> >::: `:<::;::> 2 :`:<:``:::'::<:':::':<':`:`:: »`'` .,2..':?E`:::::K::: MTCA6 Method A Cleanup Levels 5 30 40 20 1.0 7 Notes on Page 8 of 8 i - r ---- ---- I J - - - J - TABLE 1 (Page 5 of 8) BETX3 WTPH-G 4 WTPH-D 5 Well Casing (EPA Method 8020 or 8021 B) (mg/I) (mg/I) Combustible Vapor - (pg/I) Gasoline Diesel Monitoring --Date Concentration2 _ - Wells Sampled (ppm) B E T X C7- C12 C12 - C24 MW-14 04/06/98 : ]ini:p ?::ali; <100 <500 <3,000 <500 <6,000 :t<�1HU;;;;:;;:;::;;:;;:;p:::;:: ;: >::»»::>:>:z:::: :> (continued) __ 0 /1698 4 / ...................................................... o / o 4 2 /98 __ •:;.:.;:.;;: 22. .................... to 05/14/98 <100 <25.0,<5.00 8€ •4 1 :::iiiii. <25.0,<5.00 4 t.0.9.. 32E ....i:E::..... D -- Duplicate 05/14/98 P <20.0 06/ 24/98 <100 <2.50 Duplicate 06/24/98 __ 2.50 <15.0 C {j 07 /21/98 100 <2 0.0 Duplicate 0 7/21 98 _- 20 0 <10.0 MW-15 01/07/98 300 1.10 1 9.99 0.585 16. 1 ..2 EIS.. 04 /06/98 <100 <10.0 <10.0 <10.0 <20.0 . :•:0:•.in`'' :::M : `ili::iEEE 05/14/ 98 <1 00 <0.600 <0.500 . 0 <0.500 . 00 00 06/24/98 4/ 8 <100 <0.500 <2 00 <2.00 <1.00 07 /21/98/98 200 <0. 0 6 0 <0. 500 0< .500 <2.00 MW-16 04/06/98 4 /98 <100 <50 0 <50 0 <500 <100 .......:::. 05/1 4/98 <100 10 9.00 <3.00 :: :::::: 06/24/98 <100 <2.50 2. 0 <10.0 07/21/98 <100 <10.0 1 .0 5 2 .7 <2.50 2. 0 MW-17 04/06/98 <100 <0.500 <0.500 <0.500 <1.00 <0.0500 <0.250 8 05/14/98 280 <0.500 <0.500 <0.500 <1.00 <0.0500 <0.250 06/24/98 <100 <0.500 <0.500 <0.500 <1.00 <0.0500 <0.250 07/21/98 <100 <0.500 <0.500 <0.500 <1.00 <0.0500 <0.250 MW-18 01/07/98 7/ 8 16 0 .. .................. 9 09 04/06/98 <100 <25.0 2 .0 <100 <100 1 0 <250 04/16/98 --4/1 29.3 <2 .50 04/17/98s __ <2.50 05/14/98 / 4/98 <100 <7. 00 20.3 <3. 00 06/2 4/98 <100 2.00 190 <5. 00 2,$5' #�7 01/7/2 98 10 0 <10.0 18.1 <2.50 MICA6 Method A Cleanup Levels 5 30• 40 20 1.07 Notes on Page 8 of 8 gill 1111 11111 11111 11111 11111 VIII 111111 10111 _ r r ; ( ' , ' , ; ' TABLE 1 (Page 6 of 8) BETX3 WTPH-G 4 WTPH-D 5 Well Casing (EPA Method 8020 or 8021B) (mg/1) (mg/I) Combustible Vapor (pg/1) Gasoline Diesel Monitoring -Date Concentration2 Well1 Sampled (ppm) B E T X C7- C12 Ci2 - C24 x.x.x.w.s.x.x.x....x.x.x.x.x.x.x.w..'.:.x....x.x. ....x.y...A.x.x.x.x4.: MW-19 01/07/98 140 imm:::::::::::::i1:97:::::]•;:iiimigi:.:,:::iii.:i•::•::iiiiiiii:45:.:5:i:isi::*:.:K:i: 2.97 i:::mip.,:goliiiiiiiiiiiiiiiiiiiiiiiii.: iimiii:iiiiiii::iiiiiiiiii7aiiiiiiii:ii•:*i:i:iii*isi::::.::.:i:i:i::.::.::.:::isi::.:i:i:iii:.i.:200:i:i':iii::::gii§§:.:i:if: ,,,,,,:•:•::::::,-":::::::::':::::::::::::::: .!ig::::i•:::.i.:::A::-::: :::,:::-::::::iiiiii::::::iii:::::::-Inii:::iiir:.......................................................................„...... 04/06/98 <100 <25.0 <100 <25.0 <200 I 04/21/98 -- - <0.500 1.61 <0.500 4.36 ::::::M::::::.i:MAtiagtliiiigi:Siiia•::::::::0:::::Mi:AWRNIEM 05/14/98 <100 <3.00 5.42 <6.00 13.3 1.:.ii::::::iiiiag,::•i.t21.:•.:57:iilEigg:i.ii!:a .ii::i.::.:]::.§iii::::: i.fM30:.0::::M • ::.:•::i$.:::m::...„...:::::::iiiimiii.:iii::;.i.:.i.:: ;gi::;:q:::...i:iLii:igiNE•ii::!:::-Nii sa:::::::: :::&::: ::::::iii.iii::::i.ii.i::::i::ii.ii::ii]::: i; 06/24/98 <100 <3.00 10.2 <4.00 i::::.M:::::Wii4::::.:::::if.:if.,:::•::•.::::::§§:iiiiiiiiii:::.§:.?:i•:iii:.i:8•1111:0:iif::::-:.:ii:•0i::. ii:.ii:g:iiiiiMiig:.:•3,C8.giiiii•:.iiii.i:::.a.i • i*i:i:::.:ii:.iiiiiii:.::i!iiii::,-i::::,:ign::i.iii.i;ii:i::::Iii::iiiisiiiiiiiii:::i:§:iiiiii::•:i.g:.Wii::i.:•Qi:::::E::::iti]:iAlii:ii§i:i•:,:i:.i,:::i.::.:i,i.:i.:.:i.::.::,:i.:...: • 07/21/98 <100 <15.0 '.,g§§ii:...iiii,_37::;V::::iiii.:?:iii:. <3.00 W:gi!ii;:::i:::.99::*:-:iiiiiiii:.iiiii:::iii :•iiiii:-IiiMBIlafgiME:Miiiii:.1:.iii:ii::::i:Z:ii:::iii:M8:1;Pgiii:-?::iii:iii::•:i •::: :i;ii;i:i•3::.:::Cfii''.::.:..:i: ;•iiiK::.::.:..:.-;.::.:?...:r.::.:f,.:.:ff-.. . ...ai:;2:-..:"..•-i"-?-4-4-•.:':.:•-••::::.;::i:'-;::i:i::.•:.:::-..:..:::::•4 MW-20 01/07/98 180 Miiiiig:iiiiigligil-MHE 16.7 3.11 4Aggiligl'i iili::ii.iiii:::iii:rigaZOW:Milin aggaii.c:::45.440HiNE .............................. ..... v.,................................................---,..., 04/06/98 <100 <2.00 1.87 <2.00 4.32 ••••••••••••••••••••••••••••••••••....•••••••••••••••••••••••••• :**:::.:xmi:.:i:::::::::•::: :=:•::i.•:.i•iiiiii.i:M:li::i.::-Nni:::::id§iiiini::':::JE gi:iii:::i;i.iiiMiii:::::::::-§§§Mili.M:::a - 04/21/98 -- ':::ii;iiiiii:::::012Riiili:Mgii.:1::....ii.iiiiii:R:]:i12"1.iiiiii•Mg 26.0 ::•::IiiiIV::::::•:4.tM:ii:iii::gi:::::•:iiii:ii:::Miigiiiiii:18Ai.iiiiiiiig:::i::ii:i:•:: :.:i,.:i:iii?.::ii:iii::i::::g3gii::i.::iiiiiii::-iii:Mi •:::ii3li:Miii' ':gi:iii.,:::i:.::.::::.ign:§:::Mio:::r0::i]M.:::i.iinii!i': 05/14/98 120 <25.0, 11.5 12 18.7, 19.6 12 <5.00,1.54 12 : 8g.i.iaiii5MR:;:;:g:Miliiii':ililigitTiliti:0:::: ::::i::11M::::;::;:.:6::i:i:::::::*Ii:i1;5::::i::::.ii::::3•iigii::ii: 06/24/98 <100 <0.500 10.6 <8.00 mg:Riggjiggnig::,.ggingigliiii:::01..ANMOi.gmii:::ilimi::::ifilaglim:::::: : .............................______________-, ---w"-------- ............................................................._„........................................................................................................................................e,...,Weee.W....................•••••••••••••••••.............................„„.............,....................................................,,,............................................,.......................Wee.W.W.W.W 07/21/98 <100 <15.0 14.6 <2.50 IiiNg10-8.):.:51N:1:::1::11:,si.i..;:iii:Migik..ii.D.i.f.•;.8-0-iii:%:,.:%:•••::•:•?:iiii:.:.i:%::.::.!:.:•ii i:'::.i:.§::.:I*.!:.:••,"1:1,1:1:1:1:1,.2-11:10.........1:1:1:1:1:.]:1:1:1:1:1:1:1:1:1:.i.:1 • MW-22 04/17/98 -- <0.500 <0.500 <0.500 <1.00 <0.0500 <0.250 05/14/98 <100 <0.500 <0.500 <0.500 <1.00 <0.0500 <0.250 • 06/24/98 <100 <0.500 <0.500 <0.500 <1.00 <0.0500 <0.250 07/21/98 <100 <0.500 <0.500 <0.500 <1.00 <0.0500 <0.250 MW-23 04/20/98 -- <0.500 <0.500 <0.500 <1.00 <0.0500 <0.250 MW-25 05/26/89 190 1.5 2.0 2.2 '!::::::::::::.E8114:: :::gigiii.i -- -- iiiiiiiii:iiim::•i:i:•::.iiiii:iiiiiMii 11/28/89 <100 <2.5 M,:iiiiM34 :::::::aiiMii <2.5 :::g1:::: ::::: 10).::i]]'aig,:]ii, -- -- ---------- 02/27/90 <100 0.8 18 0.7 gggg2tliMNi -- __ , 06/26/90 <100 1.0 8.8 0.9 13 -- -- 01/23/91 100 0.7 1.7 <0.5 1.6 -- -- 07/26/91 140 <0.5 2.8 <0.5 6.3 -- -- 01/07/98 ,..................................................................................... ..................................................................................... 230 2.60 0.948 2.33 5.85 i:•:iiiiliiiiiiiiiiiiiiiiiiiii:O.00niinPiiieg :ME;;::gei:e::::::ill :::::::::::•?: i.?:.:.::W::::iig.:.i.i:::.:::ii.i::i:::::.iig:;;ME..::::::::i:i. .*:.i::: :iM11::::;i::i'i.ii:: :::•.ii.. :g::i::in:::i:: :. 04/06/98 <100 <1.00 <0.500 <0.500 <2.00 077.5::::i::iiME: i:: :::i::::::::::::i::0:::::1.0.2.M:i::::::!.:.:::::M 'HgVOOMPPgg:MCAMMMUMgMBi: 04/21/98 -- <2.00 <0.500 <0.500 <ZOO 7:::Aiii.KiNie:•:::i.ei:.ii.iiinin.;•nOMM:0 , i:::MingiBiiMi]iiniiiiiiiiniMii:Mr:Ii:::i•:.: i':•:ii.:-iiEt.:::i.,•::::::•::ii.i:.ii,-::ai.iiit..:;]: :: 05/14/98 140 <1.00 <0.500 <0.500 <3.00 ii::§iiiii:•:.:•i:i:iiiiliiiin048iMii::it:i'iaiii.f...••.ii:::::: ::mg:Ii:Si:.20.:.?aiii•:iiiM ..........................................................„..........„-„„ • 06/24/98 <100 <0.500 <0.500 <6.00 <1.00 ••:.i::1::iniMil::i:g.1:.;.0qEMS.: ..:•:i:i•:::::::NR::::EV62.ii::1]i:i.iii :;:::i.:.::i.:. ::iimmii::iii":i:iiiii:i.:::i:i:::ui:iiiiiiiii.:iiiiiiiii::.-..•:•:i••:::.•::: ii::::•:f::::::::.:•:•::.f:•:iii.:::iii*:.:::•:,:iliiiMiiiii:.:•:.:. 07/21/98 <100 <1.00 <0.500 <0.500 <4.00 ;:i.ii•ElignigRAVERM:.::::::]:::.g]::. .:::::::::Rg.:PM.i.:::::XE ' MTCA6 Method A Cleanup Levels 5 30 40 20 1.07 Notes on Page 8 of 8 • TABLE 1 (Page 7 of 8) BETX3 WTPH-G 4 WTPH-D 5 Well Casing (EPA Method 8020 or 8021B) (mg/I) (mg/1) Combustible Vapor (pg/I) Gasoline Diesel Monitoring- - Date ConcenTratibi2 Well1 Sampled . (ppm) B E T X C7 - C12 C12 - C24 MW-28 06/30/87 -- <0.5 <0.5 <0.5 <0.5 -- -- . 01/07/98 180 <0.500 <0.500 <0.500 <1.00 <0.0500 <0.250 04/17/98 • -- <0.500 <0.500 <0.500 <1.00 <0.0500 <0.250 07/21/98 <100 <0.500 <0.500 <0.500 <1.00 <0.0500 <0.250 ::::::::::::::::::::::::::::::::m_:•:•:•:•::moim: MW-30 01/07/98 <100 <0.500 <0.500 <0.500 <1.00 <0.0500 04/06/98 <100 <0.500 <0.500 <0.500 <1.00 <0.0500 iiMIEMT.OVilgMiiiiii:::•:. • :::::::::::::::::::::::::::::.....y.:::::.::::::::•.:::::::::::::::::::::::::::::::::: 05/14/98 140 <0.500 <0.500 <0.500 <1.00 <0.0500 0.948 • 06/24/98 <100 <0.500 <0.500 <0.500' <1.00 <0.0500 0.608 07/21/98 <100 <0.500 <0.500 <0.500 <1.00 <0.0500 ......................................... MW-31 07/21/98 <100 <0.500 <0.500 <0.500 <1.00 <0.0500 <0.250 MW-32 01/07/98 <100 <0.500 <0.500 <0.500 <1.00 <0.0500 0.304 04/17/98 -- <0.500 <0.500 <0.500 <1.00 <0.0500 0.271 . ' 07/21/98 100 <0.500 - <0.500 <0.500 <1.00 <0.0500 <0.250 MW-34 01/07/98 <100 <0.500 <0.500 <0.500 <1.00 <0.0500 0.370 07/21/98 <100 <0.500 <0.500 <0.500 <1.00 <0.0500 0.304 ••••••••••••••••••••••••••••••••••••• •••••••••••••••••_••••_,•••••••••••••••••••••••••••••-•-•-••••.,••••-•1••,.......••••••••••••••••••••-•••••••••••••• MW-38 05/14/98 <100 :ii:::i::::inii:iiialui:li:i::iig:i:iii: 4.15 7.47 11.0 ....................,.....--.................................................................... 06/24/98 220 <2.00 <0.500 <2.00 <1.00 0.0953 0.390 07/21/98 <100 4.10 1.10 <0.500 <1.00 0.163 <0.250 MW-39 05/14/98 <100 <0.500 <0.500 <0.500 <1.00 <0.0500 <0.250 06/24/98 <100 <0.500 <0.500 0.557 <1.00 <0.0500 <0.250 • 07/21/98 100 <0.500 <0.500 <0.500 <1.00 <0.0500 <0.250 MW-40 05/14/98 120 <0.500 <0.500 <0.500 <1.00 <0.0500 <0.250 06/24/98 . <100 • <0.500 <0.500 <0.500 <1.00 <0.0500 <0.250 • 07/21/98 <100 <0.500 <0.500 <0.500 <1.00 <0.0500 <0.250 MW-41 06/01/98 <100 <0.500 <0.500 <0.500 <1.00 <0.0500 0.576 06/24/98 <100 <0.500 <0.500 0.786 • <1.00 <0.0500 <0.250 07/21/98 <100 ' <0.500 <0.500 <0.500 <1.00 <0.0500 <0.250 MW-42 Shallow 07/21/98 400 <0.500 <0.500 <0.500 1.76 <0.0500 ' <0.250 MTCA6 Method A Cleanup Levels 5 30 40 20 Notes on Page 8 of 8 TABLE 1 (Page 8 of 8) . 'Approximate monitoring:well:locations:are:shown:in i=iguresrl:and2 •• • • ' • • • ;;, ;;;:.2Mpnitonngwell:casitig:Oonlbustibie.vapor:measurement:in.pprnobtained using a.Bacharacti7.L•V:Sriiffer:;Calibrated to:hexane::Measurement obtained from interior, .. o>wed casin a iaximatel 1 faatari . . . .. ... .. .: 1# t?P� y.::: ' aveair?wafer:.�r►fe[#ace r' :. >::::::::3E?A.Method:802Q:or.:802QAwere:usedior::1989.to:1998:saniplingevents;::A'purge and-trap:procedure was';used:for.analysis:of n.98Tsampies : ..::::::<:: :=benzene�: .m et yIberr ene f; aoluene�X:.=..:xxaenes . • •• • • : ::twd4lQgy.. letlfodWT.P:. la :::. • :• . .. .. .. '.: : • • . .. : • .... .. ... • :>:::<�hito�del7QXics:�entrel>Act:th/AG::173-340� . ::. :::....:�.:..;:.. . .. ... ; � . ......:....:7The:(v1TCA.MeinodAgroutid:wat:er:oleanuplevel:for the.surrrof gasokne and diesel range hydrooarbotr:concentr..ations:ls.....f:carbon.ranges are:distinctly.:.• :...quaritltted;nstng gas:chromatography:methods..:...:...::::.. ..:..... .. ... . .. .. 8GFu• nd Water samples obtained Oh 0410S198 Ware a1s analyzed fOr heAVy olt range hydtOcarbons heavy Oil range hydrooarbons were not detected ate reporting limit • .....ofc0.750mgR farailwells;sampledexoe•t;for:monitorin�wells:MW-1:4 MW IBaiid.MW.19wlrich:were:notd teotei at:e.:re•::rtln :lfriiit of<158 m :. g .. .... p. g . Sample:else:analyzed for:.halogenated:Volatile:Organic compounds.by EP.AMethod 8:02:1B(modifie:d)> Afialytes:were:hat:detested Seelaberatory report,for ':>:completa;list.>of:methodanalytes:and:detection.ifrh)ts . • •,• • • • • ..........................................the:hydrocarbons:fii ttiis:sample:rrprpsehtdiesal=afige{C:1U):ttiat;exterid•into:the:gasoline:•quaftiffeatioh range. 11Sample obtained after removing approximately 1:;500 gallons:of.ground:water:from the:well:using:avacuum:truck: :. • . • ............"t2'BETXahaf•zed by two:inefhods;:EPA Method 8021E first:iialue and:EPA Method:8260B(seoondvalue) • • y ( r • • :not:analyzed .. : . . • . . . • . ;....::;:..;E!94:T:midn:sgrams:per liter ..• .. .. . • ... • . .. . . • • :.mgR.:=:muligrams.per:liter. • • . • -* • ••. . .Sh?dipg:indicates:that:the:analyte Wa$:detected at:a:concertitretiori'.greater tried th'0.MICA Method A'grctlfid water;clean:uo level. • • Chernlottl iinaiyses toi the currentreporting:perlodby tdisrth er4ek:Analytical:::•The laboratoryxoport•for:the:current:repotting period is provided.i Appendixi B, . ••• P:\000to099\0894002\finals\0894002-t1.xls - - „ , __ , _ - r ----1 r- -__ 1 __ i -' __ _ "__ - __ - - r r i TABLE 2 (Page 1 of 3) • SUMMARY OF SOIL FIELD SCREENING AND CHEMICAL ANALYTICAL RESULTS MAY 1998 BORINGS OPLC MAPLEWOOD-NEIGHBORHOOD - RENTON,WASHINGTON Sample Number 1. . MTCA Method B Cleanup Description ' MW-38-12.5 MW-39-15.0 MW-40-17.5 MW-41-15.5 AS-1-13.5 MW-43-12 Level 2(mg/kg) ...................................................... ......................................................... Date Sampled 5/5/98 5/5/98 5/5/98 5/22/98 5/22/98 5/22/98 P Depth of Sample(feet b s) 12.5 150 15.0- 15.5 13.5 12.0 . l t:`3:::::ti3S:: : :3:::::::::::::::::'::::: :: ;:i:::::::::::::is:::::::i:::::;i::::::::':: :::: : :::%:::::::i::$':::::: ::::>:::>:%:3>:: ::::::::i:.':`:::::i::i:::::::::ii::::::,:::i::i::i::i 2:::::; 3:.:`:i::$:is ::: ::::: is -.::i::::;::::`::::>:::::i:.:: FIeId.Sc Benin::'Results. ::<�:::�::�:;�>:�::�:<�::�::�::�::�::�:::�::::�:::>:�::�::<:::�::>s:�:::�::>:::;.;:;;:.>:;::;:.:.::•;:.;::;.:::.::.::.::.::.;�.;;:;.::.>;:.;:.::.;:.;:;s:•;;:.s:<.;>:•::>:«a:<�:«�:::>:<�:�::::>:::�:::>:::��::�:::>::�::<:s:: ::::::::::�:;:>:«;�::�::�::::�:::::�::�::�::::::�:::<::>::<�:>::<::::::>:::�:::::::::�:� ........................................................................................................... .............. (ppm)ors ) Heads ace m - - - <100 600 200 P P Sheen MS NS NS NS HS HS Benzene <0.0500 <0.0500 <0.0500 <0.0500 <2.00 <0.100 34.5 Ethylbenzene <0.0500 <0.0500 <0.0500 <0.0500 <2.00 <0.200 8,000 Toluene <0.0500 <0.0500 <0.0500 <0.0500 <2.00 <0.100 16,000 Xylenes <0.0500 <0.0500 <0.0500 <0.0500 <5.00 <0.750 160,000 . Gasoline-range <10.0 <10.0 <10.0 <5.00 1290 387 Diesel-range <10.0 <10.0 <10.0 <10 0 7.3/639/556 g 1240 • Heavy Oil-range <25.0 <25.0 <25.0 - -- - . Aliphatics EC5-EC6 - - -- -- <100 <5.00 EC6-EC8 -- -- -- -- 112 8.88 EC8-EC10 - -- - -- 114 29.8 EC10-EC12 - - - - 240 72.3 Aromatics .................. . EC8-EC10 - - - - <100 20.1 EC10-EC12 - - - - 187 51.3 ...... .. ... .. ................... EC12-EC13 - - - - 161 53.3 Notes appear on Page 3 of 3. Table 2 (Page 2 of 3) Sample Number 1 - - MTCA Method B Cleanup Description MW-38-12.5 MW-39-15.0 MW-40-17.5 MW-41-15.5 AS-1-13.5 MW-43-12 Level 2(mg/kg) OtherVolatile.Petro :46: dr oio.ns>:m /k ::•;::•;:::•;;;;:; ::::::::::ii[i:i:•::. :::i$iim:::.:.;.;;: .;;:;;;:>:>ii',:i ::.it i:::is::;:•;::•;::• .;.:; ::>:::,im:::<;:: ::i:.11.:;; ;i <; ::•:i :::•;i:!im:i*::",: :;.: Benzene - -- - - <0.100 <0.100 • 34.5 Ethylbenzene -- -- -- -- <0.100 <0.100 8,000 Toluene - -- -- -- <0.100 <0.100 16,000 Xylenes -- -- -- -- <0.400 <0.400 160,000 Naphthalene - -- - -- <0.100 <0.100 3,200 MTBE - -- -- -- <1.00 <1.00 NE •<::..>g: :>:.>::>:<::>::::>::s::::>::::::::<:>::»>:<: •••" >::: :::::::»>::>::::>::>::::»:::::: :.: ..... i ::::?•: ...- :i::::::::....,:,,,.::::: ::::;:::::::::.....:...... :i:: ::::z...........<:::::> :: >:::....,.....:::z:::::.:::i::i: :; ::...:i a;:::::s::;:.;:.:*:;:;:>:.:::::a::::i:::...::;;:•»i::.:.::.;:.Fa:>.: AliP hatics EC8-EC10 -- - -- -- 41.8 24.9 EC10-EC12 - -- - - 215 155 EC12-EC16 - - 668 667 ' EC16-EC21 -- - - - 365 4 8 4 EC21-EC34 - -- - - 55.1 66.5 Aromatics EC8-EC10 -- -- -- .-".::::>: >:>::>.>:_:.:.:*::::::: :: :>:>::>::;;:;:.::;:: EC10-EC12 -- -- -- -- 18.2 <5.00 EC12-EC16 -- - - - 115 60.4 EC16-EC21 - • - -- - 97.2 92.4 EC21-EC34 - -- -- -- 20.1 24.1 • Carcinogenic Benzo(a)anthracene - - - -- <0.0100 <0.0100 0.137 Benzo(b)fluoranthene - -- - -- <0.0100 <0.0100 0.137 Benzo(k)fluoranthene • -- -- -- -- <0.0100 <0.0100 0.137 _ Benzo(a)pyrene -- -- - -- <0.0100 <0.0100 0.137 Chrysene - -- - - <0.0100 <0.0100 0.137 Dibenzo(a,h)anthracene - - - - <0.0100 <0.0100 0.137 Indeno(1,2,3-cd)pyrene -- -- -- - - <0.0100 <0.0100 0.137 Notes appear on Page 3 of 3. Table 2 (Page 3 of 3) Sample Number' MTCA Method B Cleanup - -- -- - -- — - --Description MW-38-12.5 MW-39-15.0 MW-40-17.5 MW=41-15.5 AS-1-13.5 MW=43-12 —- Levert(mg/kg) Noncarcinogenic Acenaphthene -- -- -- — 0.122 0.0183 4,800 Acenaphthylene -- — — -- 0.0537 <0.0100 NE Anthracene -- — -- -- 0.0361 <0.0100 24,000 . Benzo(ghi)perylene — -- — — <0.0100 <0.0100 NE Fluoranthene — — — — 0.0287 0.0165 3,200 Fluorene — — — — 0.360 0.0201 3,200 2-Methylnaphthalene — — -- — 0.0917 <0.0100 ' NE Naphthalene -- -- — -- 0.142 0.0384 3,200 Phenanthrene — — — — 0.620 <0.0100 NE ' Pyrene — — — — 0.0463 0.0403 2,400 , .1.{ote a'i i:i r> ii iiiii::ii::i::::::::i:::? ::?:i:>Isla i ii::i%:i :i:::::i:?is::i i i::::: Ei •iii: :?i:::?:::i ii::::::iii ii ii§i i?::•':•:::::::ii:::iii >i':'<:: : r'> 3 % :: ::3:i s2<ii:g::: iii i ii>E:?:::i i::::: :sE:?<:fE'?:' : :: :i:% ? ::ii::t:r::;:#:;:::;::::::::: i::s:: . ii:i:::::i:4iiiiiii:vjijii'ii:v?Y::ri:};v�:ii::ri"�}:;�::i:;ii::::?:i::i::ii:isLi}iii'•iii::j$iii}>};i'::"{:;}::;y}i':"ti yiijiii;'!: "((i;i;i:iiiiiiiiiii::::j;:;:i;;::•.';:{:ii;;;:L:•'.:i}iii:ti?:.::;;}iiiiiiii:Lti{:;;;;;':':;;:!:':"iriiiii:::::i:;iii({:;!i:'rQ}h'riiii;;'!is{ :vii:vj:'i'iiii:�i i::iiii'::::iiiy)ii}i::iiiiiiiiiiiiii. •...... ..roxtrr>a#R.ax .Ivrat.Pi..v�at�ns.ar�...t:+ozYn.rrz....� �:q.�.::: :........ ............................:............. ...:......................................... ....:................................................................. ........ :::2::::•;:i:;+;;};:; :i:i { •>. >' a> ;: :: : �° �:5 :' :::: � ,> ; ::: :::> :: :;; 2i: #:•::>::::;s : :::: ' : :::?::?::::: :: ::::: :;::?:::>�: ::: ::: ::::; ;:;:i:::;:;: .;.:::..:.t•.oat.M..l~#.t.�laaau :.�ec��.s..t3nd::l�tst�>�aicutatt�ns..��A..i".4E.: . ... :.�. .� >r t : . ...:. .::::: :::.::::::.......:....................................:...:..:::::::::::::.�.�::::::::.�:::::::. ..........................................n..........,............................................(.......R..:::::�:Upda��.�ebr�aa�r.��:...u�ta..aE.vn. 4..1.?�>...................:::::..�:::::::.:.:................................................................. ::::::::: .:h'::::! e':;f'''`'•att:>•<y:>•<;;:°::<:: g::Wi:::::::::::::::::8::>::::;:.taitP;::y<:::::<:::: ::::y:: <::>::: >.::<:::::::ikiigl t80:1 ><':.>i < '.<>?':':i':i '>'•.i> '•.':':> >':?if i>```:':>'•.» > > ''S`:'i NSi$.i':':5>'; s> >a ililiM?i i '•. > ' `.........h�.S.te�...�..��.h� �A Me�isgrl B�i�n�.,lev :CprT��l.s n �#�n� r � e .: ::::::::.:::: :::::::::::::::::::::.............................................. .......::::::::::::. � . snla . .roceEfuras.s�e.s�asc�ibad.ln... . end ;> ..:. ..:.::>: :>::::>:<:::>::;::»:::<:>»::»>:: �::<:>:»:;;:>:»::; ..............:................ .....................................................�t?p......�x:�,.::�►�.:...na:s#�een<:.��.:::sti #�t:snean�:::rt�a.::::modera#a:snner�:.H6::: nea.:s ................................... ................. ..............................�.�.......................................................................... ...... ...............,................ ................,..........................................,........... . . 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'::............ ......................p�............................................ .. s.I�AHs..l"oatn .lf�tttad::: #ttno>:: :::: . : .. .. .:.,.:.::::::.:.�::::::::.:::::::::. ,:......:.:•....:............... .. .. p... .................................. ....................................... . .,..:,, .at3d> E?f::Mett�ot::S2 f,•::::;:::>»>::::::>::>::>::>::>::<:::>:«::>.<:: :.;;:::l it •i . . .... sx...renentr;�ttn�:;s ow ::#s:: asod:: .:: : :: .: :::::::::::::::.::::.:::.;:.:.::.::.. . ..:.;;:;:.>:.;:. .:.;:.::. #�. ..n.. .b .. .can.tnitra�l.axtrns;tian>nf:s�am Ie:::::Sarxf .Ca::1a[as::reextraatad::artd.ra- a :: :•::.................................. .. .. ...................... ..... .............. .......... .;sn 1 xad.in.dtt ifoaia:: rad c ;.;:.:.:::.;:.;;::.>;;;:.;:.;:.:.:;:.:.;;:.;;:.;:.;:.>:.:.:.::.::.;:.>:.::.;:.;:.:.::.;::.. .;;; :e:s r . .. l :: x...tiY....tnc#::ant#.tht.d rass�.ts s. ::.>;;:: :.: ;. :: ; :. •: >:::>::>::>:.::>::::;:>:>::;:<»:>::>:::<:>:: :<::;:;.;:;::>::;::.>:.:.. �.:;.:;;:.;:;.: ........................................:.:...........�.:lxiwrt,:::l..eba:atv. .ra rts.that:tl{ts.�lts an: :ts::dua..tu:a:rrun.-hnrnn ennus::aam e: ...... ...................................:.:....:.�::::::: ::.:..:..:... :::f3t 1tC .....rrt[tli rants. er.Mb ram............................:.. ..........................................................................................................::::::.:::::::::::.$:::::.:.::::::::::::::::::::::::::::::::r.::::::::::::::.:::::::::::.:::....:.::. anal past...r.rneasu..d..'gi:iii`>::::::»:: > �::::::'::::::::: >i:::i: :is::ii i i >'::*i*::i::>::::iii:< :>igi:i::::::::::> i` << >">` is>::'>: :<:»iiiii> > `::i::::iii <ii' ii: :. i:ii : < ::::i:i:iii:Ii ii::m m::::; .arts.: r:.:t rlitiott>:<>::::::iniiiiIiM ::: <::<: II:`>:i>:s»i<'':>: `>':`:s><>::>:: iiiiiI::>:: :s::::::::iiiii::'':>::>:::::<: : liiiiI::: ::> ::::i iii ::iii:<?::``::>::> izs>::>:>:'>i s>::: >''>::<': '<::> :::>°:<` ::: »>:> :NE>` iC t'estabmi ie < iiii :%'::>::::'•>:`:::::•> s' >:>:>:'.:»':>`?>:<s i>`:'::'::>:>:::>:::::`i::i i:`': '<::::: s? ::::::::::''''' >z>':'•» :?.»>'•.::>':'•:is'`:>'::`` <:>emir`: :`:`'::`:>:::::::?:::':':.s:':'n::1•>':'•:'::::>:` : >::::i::i:: i:'::< > <»::i:':::`::':':'•:':> : ::'{'. :f ::x*:;:?:::?::':i::?:::::`:::?'`::i:i:::::'>?:<}}'ini: :':::::>:;:;::>}::,i:>':<:Y;<::::::'::? :::::::::::i:;: <:':;' ::5:iiii:::::::':i i::iii:::ismi::iimi :`':::ii?:: ::'>'ii:: t.:ii iii::;::i:;:::; : : ;#Sr: iigiii`!iii• '>'`%`i' ::Chetinoatar;:a.yses conducted.by earth.Creek.Analytical..uf. otttoikiWashtngtpn.:.Tefabe ter, •*etrnrts are:;prasetrtad tn::Appendnr: ,::::::::::::.:::::.::::::.:::>:::<;<:;::»»»:::::•:>:•;:.:;:.; P:1000to099108940021fina Is\0894002-t2.xls i TABLE 3 GROUND WATER ELEVATION DATA OPLC, MAPLEWOOD NEIGHBORHOOD, RENTON 6/24/98 Depm to Ground Water Casing Rim Elevation' (feet below Ground Water Date (feet) casing rim) Elevation' (feet) MW-2 67.29 20.67 46.62 MW-3 66.52 18.61 47.91 • MW-4 65.51 16.78 48.73 MW-11 64.92 NM NA MW-12 64.81 15.76 • 49.05 MW-13 64.46 11.70 52.76 MW-14 63.81 11.90 51.91 MW-15 64.35 12.75 51.60 MW-16 64.42 12.80 51.62 MW-17 64.43 11.14 53.29 MW-18 65.29 11.40 53.89 MW-19 65.50 11.61 53.89 MW-20 65.57 11.68 53.89 MW-22 63.94 11.67 52.27 MW-23 63.84 NM NA MW-25 63.16 13.51 49.65 MW-28 62.34 NM NA MW-29 63.07 13.91 49.16 MW-30 63.64 13.11 50.53 MW-31 62.92 , 11.73 51.19 MW-32 65.28 11.40 53.88 MW-34 64.46 10.63 53.83 MW-36 62.01 NM NA MW-38 64.95 10.84 54.11 MW-39 66.54 16.99 49.55 MW-40 67.10 19.30 47.80 MW-41 63.22 13.95 49.27 MW-42 Deep 63.65 6.88 56.77 MW-42-Shallow 64.69 10.18 54.51 MW-43 65.04 10.96 54.08 AS-1 64.89 4.21 60.68 }`i ''`' 'i }_tci<` i` c' < si' C 5 > ? isis2asi { 'r' isi'+ii !i< ? .>iiiiip6.a o sia:get:C ;:?iiiiiiQtt::dliLEti ibased.4T1:::19$B:stir:fl..:2 E:>::::»::>::»::<::<::<::<:.>::::>::s::::>::: :<:?::: ...:::.........Drag.......... :..: :... ::: .:.;......,..4.. ....,.......:..::...........;a..ve d..... >:;:>:::iilli»>: <: :;:: �f to P agrees}.. Sc.#s.. ate h..4 fv.. ddtkan l water;eW 1. .:.;;»>;;»:.;;.......... ii;::ii::{}N:}':';ii :isi}'':iY iiiiiiiiiiiiiiii:{+::ii:isis: iii;;:iiiiiiiilaiiiiiill iV:iliiiii:;ji:R:vi:v:iiFiiiiiiiii ?:ii::iii'iii::ii ::hL:..i:i��.....1.1V3:il.1GiGYQYI):4'N+:<:::•i::i::::::%:isi::�:::i::iii::iii:i::iii:L:ii:i:iiii ii:::::ii::ii::i::i is?i::::i iii:ivii iiiii':�i::i::::i::::::::ii::ii:�::ii iiii is riii P:\000to099\0894002\finals\089400243.xls TABLE 4 (Page 1 of 2) SUMMARY OF APPLICABLE, RELEVANT AND APPROPRIATE REQUIREMENTS OPLC, MAPLEWOOD NEIGHBORHOOD RENTON, WASHINGTON Requirement Source Description Comments Federal Clean Air Act 42 USC§7401 Established National Ambient Air Quality Standards(NAAQS)Requirements,although generally applicable,are superceded by • that may be applicable to remedial actions that would result in state standards. "major sources"of emissions. Washington Clean Air Act RCW 70.94 State ambient air quality standards supercede the NAAQS. Vapor treatment unit emissions will be subject to these These standards are anticipated to be applicable to activities regulations. that would result in"major sources"of emissions. General Regulations for Air Pollution WAC 173-400 Regulation establishes policy to provide control and/or Vapor treatment unit emissions will be subject to these Sources prevention of air pollution and standards for emission of regulations. contaminants in the state. Model Toxics Control Act RCW 70.105D and Establishes administrative processes and standards to Primary regulation governing cleanup of site. WAC 173-340 identify,investigate and clean up state sites. Puget Sound Air Pollution Control Agency Air emissions permits are required of all new sources Vapor treatment unit emissions will be subject to these according to established procedures and criteria. regulations. Resource Conservation and Recovery Act 42 USC§7401-7642 and Comprehensive regulations regarding the management of Not applicable because hazardous wastes are not expected at (RCRA)and Hazardous and Solid Waste 40 CFR 264.94 RCRA hazardous wastes,including control,transport, this site. Amendments storage and disposal. Dangerous Waste Regulations WAC 173-303 Regulations regarding control,transport,treatment,storage It is not expected that waste soil or ground water will classify as and disposal of state dangerous wastes. a dangerous or extremely hazardous waste. Federal Water Quality Criteria(CWA) 33 USC§1251 (a)(1) Established criteria based on designated or potential use of Nonenforceable guidance developed under CWA and used by water and designated use of the receiving waters. states to set water quality standards. Washington Water Quality Standards for RCW 90.48,WAC 173- Established state's water quality standards for surface Applies to ground water discharges to surface water. However, Surface Waters 220 and 173-201 A waters. indicator hazardous substances have not exceeded surface water cleanup levels in ground water adjacent to the Cedar River. Minimum Standards for Construction and WAC 173-160 Establishes minimum standards for water supply and Applies to decommissioning existing resource protection wells Maintenance of Wells resource protection wells. and construction of new wells. State Water Resources Management RCW 90.44.050 Applies to the withdrawal of greater than 5,000 gallons of day Unlikely to apply. Program of ground water for treatment. Notes appear on Page 2 of 2 --- ---- -- --- TABLE 4 (Page 2 of 2) Requirement Source Description Comments Standards for Solid Waste Handling RCW 70.95 and WAC These state rules would apply to the disposal of contaminated Regulations are followed for disposal of soil cuttings and other 173-304 solid waste on-site or off-site that did not constitute a residuals. hazardous waste(RCW 70.95;WAC 173-304). Occupational Safety and Health Act 29 CFR 1910 and SARA Requires that on-site workers engaged in hazardous waste Applies to workers at the site performing remediation-related (OSHA) Sec.126 - operations complete 40-hour health and safety training. tasks. Washington Safety and Health Act WAC 296-62-300 Establishes training requirements for workers at hazardous Applies to workers at the site performing remediation-related (WISHA) waste sites. tasks. State Environmental Policy Act(SEPA) RCW 43.21 and WAC These rules promote welfare of human health and the Air sparging remedial action would be subject to SEPA 197-11. environment. approval. City of Renton Permits Requirements to be determined. P:\000to099\0894002\finals\0894002-t5.xls TABLE 5 (Page 1 of 2) COMPARATIVE REVIEW OF REMEDIAL OPTIONS OPLC, MAPLEWOOD NEIGHBORHOOD • Technical Feasibility Benefits and Cost Restoration Time Frame Disruption to Neighborhood/Other Risks Other Comments � e.troleu .aantamtnated.sotC.wout .. ..n..h...rmmadrata..vrcan. ..of..iheblac > s . :: ....:. ..��.. ......... ... }.. .. .. ...v essrble.. m k.ralva to. urea t e.. rh .. ....:� ..... al.af ace. .vino .fi..C)P..t.�.ut..t..e:asemanf:.art :.v:: a : :;: :;:. : :, .. .c as o otmo... at SA t.�x atv kt n...H.t.s . ...ra P ty................ ... n. .h..f.Sa fheast.5".'.5trae �. t � :no�: . ... ...Ht .............. .... .......................................... .............. . .......................................................... Y.............................................. .ail.ex.ava.ron.�s. o ed e o d :. r P ............. .... ........................... . m ..s....b.nee.h.Sauthaast.a�'...:�traet.Ma Lew. a..P..attt..oths.. . :;:::::<:::<::;:;�:::�:�:;<:.;�::.:.>::;•.;<::;::«::;::::.;::�;;;;;;;;;;;;;;;;,;;.:;::�.:::;:::;;:::;>::;;:.;::::;o;:�::::.::::::::�.;,:::::,,:.:.;�;::::.:::.:::::::::.:::::::.............:..::::::::..................,.............::::.;..:;;;•:::::::.::•:.;;:.;:.;;:.;:.;:.:;:.;::.;;::.:.:.::;,;;>.::.:.:;;;:.;;::•�;:.;:.;;;::.:•:;:..:.:...:;.;::.»::>:::::>::»::i:;i:::>�:::;:<::.:::::::::>r��:':::><••:'::r::::::i•:i:.<::::>::>::::>::;s:.::<>?�:i:::<:;>:,<:: <:::::i3: '>:>:::::::.;�<::::;:s:;;:.::;::>;::;::.;:;<z;;;:;;::;s:<:;:s:�::.;;;«:.;:. ; :: :� i::4:::::::::;::5: cal re o s se• .e::re brt to >::>:This o tion Wotild involve:oxcavafio ':o a ro 1::end:la rstr n. f. roxrmafel::3Ot)0. ubrc:..ards:of:honcantemrnr3ted'o r: ;. e a vate• o ::Cot: recta :. as. n ...... ..... ...v t6urden.and:a rox a ;:;. o:.............::..:..:......................... .. r. . ....... ......... .. ...�..........1.?..:::::.:?�.:::::::::.....P:..:...:.....................................:..:..:::::::....pl?..:. rmaf !..15ab.Cubrc. arils f. e o =.....�......................... .. . ........:::::.:Y. ..:.:::.....::.:Y... . ....... ....... .. ...... ........... ... .. ..... .. tr leum.eonfaetrrnateef:sorl ream:fhe:itiatettable�zone�'�The .._..:, :::xe ::: >:;::.1. r la(dell >'>rr rrr rrr re rr rr r' rr' r 3 >'> r>r rrrr'rr' i s i si;rrr >: isi i ,i; i; i> ii ij i i; i si!i' iE ? ii j ii i i i i i i > r sf r>r » i :? > rrr<rr !i j.; : ', . i; -s u cksaos tr atrrisri.... l .or. a 1.......... a i a edsorl would ba trans cite . d ........ ............. ... ........::..:.................................... ...... ... ..................... ......:::::.::. ;:.:::.:::::..:: :::::.::....::::. .:....:..... ..:;:....... cant m n t .:.... ry..... ... ....... ... .. ... ..... . .... .........:........:.................................. ...... soil) qualityimmediately 9proposed city privateTemporary shoring and dewatering will be needed• Provides source(e.g.e. contaminated removal .: Approximate cost of cleanup action: $500,000 • Ground water ualit down gradient • No excavation is ro osed beneath streets or • in a portion of the area.with highest residual • - Estimated mass of hydrocarbon removed: of the block valve would be expected to improve property;however,truck traffic(about 7 trucks.per day for about for effective excavation near Southeast 5'h Street concentrations in soil. In general,source removal 12,000 pounds(estimated based on excavation faster compared to the natural attenuation 15 days Monday to Friday)would temporarily inconvenience and the existing fuel pipelines. is the considered most effective remedial volume) option. Nevertheless,it would likely be 10 or neighborhood residents and businesses. • Residual petroleum in soil will remain beneath approach. • . Cost/Benefit Ratio: $42 per pound of more years before TPH concentrations in ground • Odors from soil handling and excavation equipment noise would Southeast 5th Street and other areas with residual • hydrocarbon removed water are less than MTCA Method A cleanup temporarily inconvenience residents near the block valve area. soil contamination. •.. Duration of action: less than 1 year levels throughout the entire plume area. • Temporary lane closures in Southeast 5'h Street near the block • Long-term ground water monitoring would continue • Estimated mass of residual hydrocarbon valve would likely be necessary. after remedial excavation. remaining after cleanup action:63,000 pounds • Estimated years of long-term monitoring following cleanup action: 10 to 15 years • Cost of 15 years long-term monitoring: $330,000(present value in 1998 dollars) Note: Residual hydrocarbons remaining after the cleanup action will naturally degrade over time. water.table::.would be ilsed.tii:.treatxas/duat::volatile::and bio art:below.tAe lode radable h iraaerbaris :; .: ::>:: �:® :,n ectlon. f.. c. In. round:.water...end:sail:ln;tlte>�vafer..teble.zane,awn .aa e; rb ose�::ats ar. n s stemwo d�a >::::>:a::::> lnv ........................................................................................................................................... ................ ........................... ....... . ... . u1 . nSistafasertes:af:uerticel.ar:.s at rn .we s.. errt� ..Alrsar. n ...................... ............... ..............................�......... . Y. g ......... ...................................................................... .... ........................ ... ... .... r 11 .............. a b . .ublicn ts.of..w.a..sidewalks..f ecoe...of..iberated.va -- .. .. a Nta .aw.00d..p..ark.and.the.rfa ..... Y( 1 rY .tv.. ..b rn na ed.b..raac.vahn .the.rormex....a .or:::racova ;:tre►rah..Vl�S..t...................................................... . .......................... .......... ...... ...................................... ....... . to utnth�n.the.bLvcK.valva..ar..a.. .... g.......Y................. srtua...cf... • Soil conditions and depth to ground water are • Approximate cost of cleanup action: $430,000 • System design, permitting and installation can • Air sparging will liberate vapor-phase volatile hydrocarbons and • Long-term ground water monitoring would continue favorable for this technology. • -Estimated mass of hydrocarbon removed: be completed in about 4 months. thus poses a potential risk to receptors that does not exist under after the system operation is shut down. • Involves source treatment. 60,000 pounds (estimated based on treatment • System operation would continue for 1 to 3 "no action"conditions. This risk can be reduced and managed • Injection of air should also enhance the rate of rates) years;at the completion of the operating lifetime, by the use of vapor recovery systems;however,the risk cannot biodegradation of hydrocarbons,if any,in the Cost/Benefit Ratio: $7 per pound of ground water is expected to be in compliance be eliminated. vadose zone. hydrocarbon removed with MICA Method A cleanup levels throughout • Vapor monitoring would be conducted to confirm that • = Duration of action: 1 to 3 years the plume. hydrocarbon vapors do not pose a health risk to residents. • Estimated mass of residual hydrocarbon • Construction of the air sparging system will necessitate • remaining after cleanup action: 15,000 pounds • temporarily closing Maplewood Park to public use for about 1 • Estimated years of long-term monitoring month to install wells and subsurface piping and equipment following cleanup action:3 to 5 years enclosure. The park sprinkler system will likely need to be • Cost for 5 years long-term monitoring: removed and replaced during this time. $135,000(present value in 1998 dollars) _ • Flush-mounted or buried concrete-and metal-covered Note: Residual hydrocarbons remaining after the wellheads and vaults,and the equipment enclosure in cleanup action will naturally degrade over time. Maplewood Park could pose an inconvenience to park users for the duration of system operation. • Operation of air compressors and treatment equipment could • pose a noise inconvenience to residents nearby the equipment enclosures. • • Short-term closures of Southeast 5'h Street in the area of the —block valve may be-necessary. • | AbLL b (t-age z CT Z) | / Technical FeasibilityBenefits and Cost Other Comments nun 1988 to 1998 ground water monitoring data Approximate cost of 10 years of monitoring: The dissolved TPH in ground water will likely` Does not disruptaff— ct— ---~—--------'--- ' Existing data indicate that the plume does not � demonstrate that contaminant concentrations in $250000 take 10tn2O years t»reach MTCA Method A neighborhood. currently pose a risk to the Cedar River. Data ground water are generally decreasing over time, ° Estimated mass of hydrocarbon degraded|n1O cleanup levels throughout the entire plume. ° Possible impacts tu residential property values will occur for a suggest that the City of Renton water supply wells Indicating that Intrinsic bioremediation|ooccurring years: 37.500pnundo longer period of time with this option. are also not atrisk. Data indicate that there by natural attenuation. ° Cost/Benefit Rahn: $7 per pound of currently is not a safety risk vf explosive vapors. m hydrocarbon degraded ° The cost and risks of conducting remedial action ° Estimated yeas of long-term monitoring (the two options presented above)may not be following cleanup action:20years warranted if there iono risk tvreceptors. ° Cost for 20 years long-term monitoring: $41O.00O(present value in1g98dollars) Note: Hydrocarbon degradation follows generally an exponential decoy pattern; we estimate about 50 percent of the hydrocarbons remaining at this time will degrade over the next 10 years. The remaining ` hydmnodbnnowU|conUnuetndegnode. p:000tooee0894002\fina|s\06e4002-tv.uuo ` ` > ` — ` ' ' JLI � TABLE 6 SUMMARY OF AIR SPARGING PILOT TEST PRESSURE AND FLOW RATES, AS-1 OPLC, MAPLEWOOD NEIGHBORHOOD RENTON, WASHINGTON Airflow pressure Depth to Water Dissolved Oxygen Date Time (scfm) (psi) (feet) (mg/I) 06/01/98 16:44 0 0 3.99 — 06/01/98 16:45 1 16 — — 06/01/98 17:00 1.75 16 — — 06/01/98 17:15 1.75 16 — — 06/01/98 17:30 2 16.5 — — 06/01/98 17:45 1.75 16 — — 06/02/98 9:45 2.1 16 — — 06/02/98 12:45 2.1 16 — — 06/02/98 13:15 1.9 16 — — 06/03/98 — 2 15 — — 06/03/98 13:00 2 16.5 — — 06/04/98 7:59 2 16.5 — — 06/04/98 8:00 3.5 17.5 — — 06/04/98 9:15 3.5 18.5 — — 06/04/98 11:00 3.5 17.5 — — 06/04/98 12:00 3.5 19 — — 06/05/98 16:59 3.5 19 — — 06/05/98 17:00 2 16 — — 06/08/98 — 1.8 16 - _ 06/08/98 14:59 1.8 16 — — 06/08/98 15:00 0 15 — — 06/12/98 15:00 — — 4.22 10.4 1 06/24/98 — — — 4.21 3.9 1 Notes:.. Refer;to Sectiori 12 for more 000ils..:::: .. so,... standard cubic:feefi per minute `':: psi=.poundsper square:inch mg/I=milligramsper liter: 8: — —:not measuredor;not applicable..... .... : ;...:.:. ... :..... .,:... P:\000to099\0894002\fin als\089400246.xls . _ I i TABLE 7 (Page 1 of 5) SUMMARY OF AIR SPARGING DATA IN OBSERVATION MONITORINGWELLS1 OPLC, MAPLEWOOD NEIGHBORHOOD RENTON, WASHINGTON Radial Vapor Vapor Ground Water Distance Depth to Concentration Concentration Carbon Dissolved Monitoring from AS-1 Waterl with PID2 with CGI2 Oxygen Dioxide Oxygen Well (feet) Date Time (feet) (ppm) (ppm) (%) (%) (mg/I) MW-38 6 05/14/98 - 10.92 - - - - -- 06/01/98 11:05 10.6 0 - 7 2.5 - 06/01/98 16:45 10.58 27 - 5 13 -- 06/01/98 17:00 10.58 42 - 7 12 -- 06/01/98 17:15 10.56 53 - 6 13 - 06/01/98 17:30 10.56 62 -- 5.5 13 -- 06/01/98 17:45 10.57 68 - 7 13 -- 06/02/98 9:45 10.60 290 400 17 3 - 06/02/98 13:00 10.52 185 180 17 3 -- 06/03/98 10:11 10.53 214 120 19 1.5 - 06/03/98 14:00 10.57 174 110 19 1.5 - 06/04/98 11:00 10.59 150 100 20 1.5 -- 06/05/98 15:30 10.61 115 100 19 1 8.9 06/08/98 11:57 10.75 63 100 19 0.9 7.4 06/08/98 15:00 10.77 49 100 19 0.9 8.3 06/08/98 15:15 10.78 58 100 19 0.8 8.6 06/08/98 15:30 10.77 55 100 19 0.8 8.3 06/08/98 15:45 10.77 57 100 19 0.8 8.2 06/12/98 13:00 10.80 -- - - -- 5.5 06/24/98 - 10.84 - -- -- -- 2.0 Notes appear on on Page 5 of 5 TABLE 7 (Page 2 of 5) -- - ---- -Radial---- -- Vapor--- Vapor - - --- Ground-Water ---- - Distance Depth to Concentration Concentration Carbon Dissolved Monitoring from AS-1 Water' with PID2 with CGI2 Oxygen Dioxide Oxygen Well (feet) Date Time (feet) (ppm) (ppm) (%) (%) (mg/I) MW-43 12 06/01/98 11:20 10.74 3 - 2 3 - 06/01/98 16:56 10.98 20 - 11 8.5 - 06/01/98 17:08 10.69 46 - 11 7.5 - 06/01/98 17:20 10.67 54 -- 11 7.5 - 06/01/98 17:35 10.64 46 - 11 7.5 - 06/01/98 17:50 10.63 43 - 13 11 -- 06/02/98 10:00 9.46 24 20 15 0.5 -- 06/02/98 13:15 9.45 33 40 15 0.75 -- 06/03/98 10:21 9.35 17 10 18 0.5 -- 06/03/98 14:25 9.43 29 30 18 0.6 - 06/04/98 11:10 8.95 30 40 19 0.6 - - 06/05/98 15:45 8.53 34 70 19 0.5 10.5 06/08/98 12:15 9.52 10 20 19 0.5 10.9 06/08/98 14:55 9.40 5 22 20 0.5 11.8 06/08/98 15:10 9.70 13 20 20 0.5 11.6 06/08/98 15:25 9.74 16 16 19 0.5 11.7 06/08/98 15:40 9.81 18 16 19 0.5 11.3 06/12/98 15:00 10.93 - - -- -- 8.5 06/24/98 -- 10.96 - -- - -- 6.2 MW-13 385 05/14/98 - 11.75 -- - - -- -- 06/01/98 12:07 11.37 0 - 16 5 -- 06/02/98 11:42 11.30 4 10 16 5 - 06/03/98 12:00 11.35 0 40 16 5 - 06/04/98 10:45 11.40 2 30 17 5 -- 06/05/98 14:30 11.49 0 20 16 5 5.4 06/08/98 13:12 11.61 10 40 17 4 3.9 06/24/98 -- 11.70 -- -- - -- 7.1 Notes appear on Page 5 of 5 i I i TABLE 7 (Page 3 of 5) -Radial- Vapor Vapor Ground Water- Distance Depth to Concentration Concentration Carbon Dissolved Monitoring from AS-1 Water' with PID2 with CGI2 Oxygen Dioxide Oxygen Well (feet) Date Time (feet) (ppm) (ppm) (%) (%) (mg/I) MW-17 305 05/14/98 - 11.18 - - - - - 06/01/98 12:00 10.80 0 - 16 5 -- 06/02/98 17:30 10.71 6 20 15 5 -- 06/03/98 11:34 10.39 3 30 16 6 - 06/04/98 10:30 10.87 5 40 16 6 -- 06/05/98 14:14 10.89 1 20 16 6 1.6 06/08/98 13:20 11.03 7 24 16 5 0.9 06/24/98 - 11.14 - -- -- -- 6.0 MW-18 90 05/14/98 - 11.47 - -- -- -- - 06/01/98 11:50 11.16 0 -- 11 9 - 06/02/98 11:08 11.06 5 35 9 10 - 06/03/98 10:52 11.11 6 50 10 10 - 06/04/98 10:00 11.14 24 100 10 11 -- 06/05/98 14:45 11.18 120 100 10 11 1.9 06/08/98 12:48 11.32 31 90 13 8 0.9 06/12/98 11:30 11.35 - -- -- -- 2.3 06/24/98 -- 11.40 -- -- -- -- 1.1 MW-19 80 05/14/98 -- 11.66 -- - -- -- -- 06/01/98 12:00 11.35 0 - 1 8 - 06/02/98 10:53 11.32 9 35 10 9 -- 06/03/98 11:04 11.32 4 50 10 9 -- 06/04/98 9:55 11.36 141 24 11 9 - 06/05/98 15:00 11.28 800 3,000 16 6 2.8 06/08/98 12:36 11.53 166 3,300 15 5.8 0.7 06/12/98 12:20 11.45 -- -- -- -- 1.0 06/24/98 -- 11.61 -- -- -- - 1.0 Notes appear on Page 5 of 5 TABLE 7 (Page 4 of 5) . ---Radial---- Vapor Vapor - --Ground Water Distance Depth to Concentration Concentration Carbon Dissolved Monitoring from AS-1 Water' with PID2 with CGI2 Oxygen Dioxide Oxygen Well (feet) Date Time (feet) (ppm) (ppm) (%) (%) (mg/I) MW-20 87 05/14/98 - 11.70 - -- -- -- - 06/01/98 11:30 11.39 4 -- 2 6 -- 06/02/98 10:24 11.33 10 10 9 6 - 06/03/98 11:13 11.35 2 40 10 7 -- 06/04/98 9:41 11.37 4 35 10 7 - 06/05/98 13:15 11.43 140 1,000 10 6 2.4 06/08/98 12:25 11.56 8 • 45 12 6 3.1 06/12/98 12:30 11.60 - -- - - 5.6 06/24/98 -- 11.68 -- -- - -- 2.2 MW-32 190 05/14/98 -- 11.45 -- - - -- -- 06/01/98 12:39 11.14 0 -- 16 5 -- 06/02/98 12:20 11.07 2 20 15 6 - 06/03/98 10:38 11.12 7 40 16 6 - 06/04/98 9:21 11.12 0 40 16 6 - 06/05/98 14:45 11.14 0 20 16 6 2.5 06/08/98 13:00 11.32 16 54 17 4 • 2.0 06/24/98 - 11.40 - - -- - 1.5 • MW-16 530 05/14/98 - 12.83 - - -- - - 1 06/01/98 1 11:15 12.44 0 - 9 12 - 06/02/98 12:30 12.38 1.5 60 15 13.5 -- 06/03/98 12:25 12.42 1.7 50 8.5 12 - 06/04/98 8:45 12.54 2.1 50 9 12 - - 06/05/98 13:22 12.62 3.2 60 9 12 1.3 06/08/98 13:29 12.73 6.5 60 11.2 10.2 0.8 06/24/98 -- 12.80 -- -- -- - 4.5 Notes appear on Page 5 of 5 I TABLE 7 (Page 5 of 5) - -- --- -—Radial—— Vapor Vapor ----Ground-Water------ Distance Depth to Concentration Concentration Carbon Dissolved Monitoring from AS-1 Water' w/PID2 w/CG12 Oxygen Dioxide Oxygen Well (feet). Date Time (feet) (ppm) (ppm) (%) (%) (mg/I) MW-15 515 05/14/98 — 12.68 — -- -- -- — 06/01/98 12:18 12.40 0 — 15 5 — 06/02/98 12:46 12.35 1 40 14 6 — 06/03/98 12:36 12.40 2 30 15 6 -- 06/04/98 9:00 12.47 0 40 15 6 — 06/05/98 13:40 12.54 0 50 15 6 1.4 06/08/98 13:37 12.69 6 48 16 5 1.4 06/24/98 -- 12.75 — — — — 4.1 MW-14 480 05/14/98 -- 11.92 — — — — — 06/01/98 12:31 11.53 0 11 7 — 06/02/98 12:52 11.53 1 35 15 8 — 06/03/98 12:45 11.56 2 40 13 6 -- 06/04/98 9:10 11.60 0 45 13 7 -- 06/05/98 14:00 11.68 0 20 14 6 1.4 06/08/98 13:45 11.82 16 86 14.5 6 0.9 06/24/98 -- 11.90 -- -- -- -- 3.4 Notes:- : Refer to Section 12.1 for more information and field procedures:::: 'Below casing rim. 2Measurements.are shown:as recorded by the"instruments for comparison purposes.':However,PID readings below:10 ppm'and TLV readings below;100 ppm are,generally not considered,significant for the instruments;in this applicati on: ppm=parts per million . CGI,=combustible gas indicator(Bacharach) PID=photoionization detector(Photovac MicroTIP) • . . mg/I=milligrams per liter; : P:\000to099\0894002\0894002-t8.xls ------ ------ - - -- - TABLE 8 (Page 1 of 2) SUMMARY OF GROUND WATER CHEMICAL ANALYTICAL RESULTS TWO WEEKS BEFORE, DURING AND FOLLOWING AIR SPARGING TEST OPLC, Maplewood Neighborhood Renton,Washington BETX3 WTPH-G 4 WTPH-D 5 (EPA Method 8020 or 8021 B) (mg/I) (mg/I) (dig/I) Gasoline . Diesel Monitoring Date Weill Sampled Comments B E T X C7-C12 C12-C24 MW-18 05/14/98 Two weeks before air sparging test <7,00 20.3 <3.00 46.9: 3.81 14.8 .. , 06/03/98 Two days after start up of sparging test <6.00 20.3 <1.50 57.1 1.58 :. 23.9 06/05/98 Four days after start up of sparging test <10.0 36.7 <3.00 ; 104 4.16 16.5 06/12/98 Four days after shut down of sparging test <12.0 39.6 <4.00 108 " 2.52 24:10 06/24/98 Sixteen days after shut down of sparging test <2.00 19.0 <5.00 39.8 2.85 14:7 MW-19 05/14/98 Two weeks before air sparging test <3.00 5.42 <6.00 13.3 0.571 10.3- 06/03/98 Two days after start up of sparging test 18.6: 71.5 2.69 215 .... . .2.7 30.6 06/05/98 Four days after start up of sparging test <100 <350 <50.0 <1,000 289 147 06/12/98 Four days after shut down of sparging test <25.0 ;74.6 <5.00 21:1 3.84 31.6 06/24/98 Sixteen days after shut down of sparging test <3.00 10.2 <4.00 27.4 '3:01 " ;36.3 MW-20 05/14/98 - Two weeks before air sparging test <25.0,11.5 12 18.7,19.6 12 <5.00,1.54 12 ;28.9,20.5:12.: 1.98 2,45 06/03/98 Two days after start up of sparging test <7.00 15.0 <2.00 :.;_;_.;46.0 ::. 1.32 :1.85 06/05/98 Four days after start up of sparging test <20.0 :,:: 34;8;: <10.0 : :96.7;,,:::: ;;:':'`4:98. '2.61: 06/12/98 Four days after shut down of sparging test <8.00 16 <4.00 41.7 :. 2.95 ::: 1.75; 06/24/98 Sixteen days after shut down of sparging test <0.500 10.6 <8.00 ;:r33.3 r; : :'3.75." 1.78 MW-38 05/14/98 Two weeks before air sparging test 12.1 4.15 7.47 11.0 ';, 0:805: : 2.280 06/03/98 Two days after start up of sparging test 1.17 0.558 <0.500 2.46 ::; 0.115 . 1,60 06/05/98 Four days after start up of sparging test <6.00 <3.00 <1.50 <6.00 0.760� 1.48 06/12/98 Four days after shut down of sparging test 3.69 1.21 <0.500 1.78 0.211 0.807 06/24/98 Sixteen days after shut down of sparging test <2.00 <0.500 <2.00 <1.00 0.0953 0.390 MTCA6 Method A Cleanup Levels 5 30 40 20 1.07 Notes on Page2of2 - TABLE 8 (Page 2 of 2) — — --- — iVotes: .- 'Approximate monitoring well locations are shown in Figure 2 2B benzene;E=ethylbenzene,T=toluene,X=xylenes . 3Ecolo Method WTPH,G. " 9Y: °Ecology.Method WTPH-D SModel Toxics'Control Act WAC.173•340 • • : . 6The MICA Method A ground water cleanup level for the sum of gasoline and diesel-range hydrocarbon:concentrations,is 1"mg/I"if"carbon ranges are distinctly ;.quantified using gas•chromatography methods. -:p not analyzed ,.....: —micro rams er liter g/1=milli ramsper liter,, ... . ;;:: ;-: - Shading indicates that the analyte.w•as detected at a concentration:greater than the`MICA:Method A ground water cleanup level....::.:...:.: •C•hemical analyses by North Creek`Analyfical The laboratory reports-are provided�n Appendix B. P:\000to099\0894002\finals\0894002-t9.xls • DLC:KKT 0894-002 06/26/98 _._,:___L-3,9.::: —ip,t,. ..---':---,-...-.•; • A. c.:_z: _..---- ,. .\12 wpd 1. n,, : • ,„.., imuur ------61-7E1 ...-_----- .• - ,O I. is I _.1 $& Ltom" __ ..<.:<; , :s".;::: .. 7. 1. \ t h rt rtid 4 • : t R , C' �• t •Ir Im'm n ni- k 1i 1 qa'�rn : �: .N .17 - ■ ,T �' 't, I M � �i � a U 11'/V _ 5:_ �. _OI J••'• �� '' _ _ _/t ' • I �Ull... — M Qn , 1rn VC M isiwr �/ al o (--) • ;„ _ • „,_imill._-Enitaii "7,P- .L! 3 1 > .. <...... 00, ,,,_.w....:__. ..,....„...,,,,,... .41,„.7 __ ., y is :< •::•:.,. ft• r' cn ---,1 1 I :....:U.•�,.:.�'( .;,'t•-•4!,;'..f-------• ' ,. - ' . -------='''."""'Iiiirlh,,V . , o gI • • • .. 3 Fi, l•'.,,Jr ••_`1Ii..1'� '.__"•. °iumiiiiiiiy�1 //i.i�✓jam` ,(( \\ !�rt mp — __= ' is _:------ • 1,11 r I• �' `1 r` io`_,QC ��(Il(i1 • '//6 I, .-.. _ . I...rn I I ` b �(: ' q, Ij ))) ` � /, l�yr •\•./, /':ai J !"5?_ .I '��`�j •,. - ,,/ ! 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' r\ _, . ..„.„ ......,. .,,_..._,_, ,.. ..,... ..... \ • „ , ", ,, •... . 1 , ///./.,. .x .,, ..„...,,,,.„. „,„, .5„ ., ‘„, ,,,,,,. ., ,. . .... ,, ,,,, ,...-...., I ii -- JL f- -/� ( , / 1, r, !0 K * 0' Q� " / 11 '=O °2 ,)'•. ` �" •','ram' f < 7. o �� O a m �; ,� `1 :� O I:,1 �; ' • ,�•.:,_:..,i .ems' _ I -• If c %, m p�Jr� ..; : ail v - -.S . ..� D ow, III \c o r %. :,. .< �'' , 'v• "it .. .• I j to• . -> I J .--I '- ir�-=i 7 O% i�:i'.; i.e i% it 1 I o - • je a Z —O /d\d.o /s\\ ��1 1 - Z '•�Y ��'i+i::::.; : �,�:a i r o �I-''1 — I rn 'tf.ram;�; ",;-__=(1 ),•:. ` s. _ I ) 1, • .S> - k_ .1,1" I �� •.A / _ ,x / \ h fv• i, ,.., il ... �T}==-�' �J • '•,I )1) i )'''j 1 ,�•�\,�\•.�'••• o`r-1 i :%/ / �.7--- • „. _ m .. • .•... . . 'I' • • .•1 1 • �.o N!3 ....J%'(-.�0,.j1 I ,••• •• `'i p. i� ( �) •I ::•• 0 .� ''• i II - O / C 1 l ( c �a �' t ti 3A • rn — - • ________/7 • Base of Valley Slope SE 5TH ST o 35. O 23• 0 36• Ej L9 i • e 290 ' 4ck Valve , / ,, e'o33 �// TP-1 / � SF 0 5 P-z • N� CeaQr 0 6Ty S o AVE O oP�� 032 N.21)4 ��ZL�r O' r29 O ,�13-1 c o Q�34 O A5-1 \� n 25 30 �0 Ll •'� 3e / 1p O 0 •41 D O 220 Oz ,% /1B �: P�`P-N. — „Ip Q 'll� • i5P 1 T • 2 4F � O — SP-7 :+ . ZP-11 -t- 20 �/ < 0 SP-6 SP / •0 ./P-5 ry — SP-10 SP g A 4 SP-3 / 'RW-3 1 4c7RW-1 ce„ ti tu N 08 -* cos -.• 15 1 ,0ir 170 o�?P-6 \ /r�A, oW Riv ) . erview w 3• rYY 6 r . 37 026 .: SP-8❑ 5P-13 a Q SE 5TH 4 . RW_2 �'' 1 TP-8 Aoo / ' .-•2-Shollow ST IVRS-2 \� MW-4' Deep RAILROAD 2 9 oQ , �� — — �- _�e 24 021 n Maplewood A� `ilirA il Golf / 7 dia 4111 C) Course \ SE , Q STH pi. Nil IP.?*44IA 4_ 011. AREA OF DETAIL �- 4110140110 lir 44‘4 SEE FIGURE 3 0PW-12 // o / S R 7 6 s�co sTti St Z \ * *A ' EXPLANATION: rb F9S'<. TP-1 -�- TEST PIT (APRIL 1998) F G), \ / #4, '_ 3 SP-1 + SOIL PROBE (APRIL 1998) F`,�% 1 • MONITORING WELL (OLYMPIC PIPE LINE COMPANY) e' AS-1 • AIR SPARGING WELL N o r�W-3s o - rn— 3T0 ABANDONED MONITORING WELL Base of Valley Slope —/\ o 10 o MONITORING WELL NOT LOCATED IN 1998 o PW-12W O CITY OF RENTON WELL RW-1 V ABANDONED RECOVERY WELL o VRS-1K I ABANDONED VAPOR RECOVERY SYSTEM 0 200 400 ' FORMER PRODUCT SEEP _ F `'' Al IA' CROSS SECTION LOCATION (SEE FIGURES 4 AND 5) SCALEIN FEET Notes: 1. The locations of all features shown are approximate. • SITE PLAN 4 = 2. TP-7 was situated in the same, location as SP-11. �/ o Reference: Drawing entitled "Cedar River Recovery Area Plot Plan" by Olympic Pipe Line Company, 10/16/86. Geo��Engineers FIGURE 2 -----.,,,,4 ri p ry4lo. 4 O a Base Valley Slope / .� „,,,wi SF O \\ T+-1 06 o O TP-2 ry O ST 5� ��32 /,C. ,k,) , Cf:) 1:2 1 H A V E �C o 0 6 S P TP- 2!# TP3 29• [--:::] •31 O` 34• 0TP— • , AS— - e Block 25 30 , • SP-3B� �� Valve .0 r ...s., 18 Site ' 1 o C:2) O 041 oC-7 •22 0 \ 4 '-'`'.'. ' 9 + 5P-7 SP-12 •' •• SP-11 20 O0 O - - SF • M W TP-6-- ST qA�e •14 RW-3 H S "44). : sP-2 T •1 H o 8 SP-10+ ',2. SP-9 0 : SP-6 /3.4 SP-3 p RW-1 y'Y , `: t�. SP-4 17 Q / O 37 'a' SP-5 •15 Qpt 0 -SP-13 / Riverview 3• 6 D 2 Ci) 20`,' 00 Park . s `; sP-8 /• oQ\�� / TP-8+ NA 4• p RW-2 16 / •40 \ 12• / \1 l� ❑ s 021 \.G1 / \ \ 39 • 0 24 / �`fie �0 \ �\ `__`'__.,, a 7 Q\Q �\\fie _,. / `1' Q \ — \-, RAILRO N /0e, o �� AD27 / SE6T,y ,4111111111P; o �9 Q'Base of Valley Slope Ji ci. / ST01 7/ LamA:\ ,...„ A IP . EXPLANATION: \ 3o 17-1 + TEST PIT (APRIL 1998) N SR m / 2 /69 o— sP-1 SOIL PROBE (APRIL 1998) �oo, o� 1 • MONITORING WELL N S G / - N j -1 0 AIR SPARGING WELL ��F�� 0 37 0 ABANDONED MONITORING WELL Z o 102 MONITORING WELL NOT LOCATED IN 1998 / rn RW-1 0 ABANDONED RECOVERY WELL / oo VRS-1 • ABANDONED VAPOR RECOVERY SYSTEM 0 100 200 w FORMER PRODUCT SEEP SCALE IN FEET Notes: 1. The locations of all features shown are approximate. .� ,��. ENLARGED AREA OF DETAIL 2. TP-7 was situated in the same location as SP-11. \4/� o Reference: Drawing entitled °Cedar River Recovery Area Plot Plan by Olympic Pipe Line Company, 10/16/86. Geo Engineers FIGURE 3 Z I- • A 3 • A' _c rn 160-` Glacial and Post-Glacial Sediments . a) North Valley Slope >° OPLC Pipelines t, °' Alluvial Silt and Silty Sand (16'1 Sc 201' Diameter) . CD a o Block Valve 100 Enclosure d +�- al tD GO el N tun co '' 1� '' M 'd I I I 1 1 1 1 1 I 1 1 1 1 1 I I 1 1 I o� 1 3 3 3 3 a 3 I as a 3 a 3 a 3 QN U 2 2 2 2 2 VJ 2 V7 V! 2 to 2 to 2 a 2 •' ,,:�• ... ' .:o.,a.•.,:+stpr. .y.'•_ �sa?.!do'::;..:'!?:i`;'4:�p.•:..:�'.'s'3!;:,;ti.--t.� -.J'•y.•?_r d. I .},.• ,'p. � oo•. • • ,e•.�:::: ,.e;r�qp .tldb. :'•9-fit,b:q:?::?:a...:. ..o.:.o:po:o .t..E:d:q?4 .,.e•:.o.. . 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Pre-Glacial Sediments /Rock C 0 0 CO 0 —140 w 0 0 • -20D EXPLANATION: 0 o . - BORING 0 I o _260_ _ — WELL SCREEN SCALE IN FEET o V - APPROXIMATE WATER TABLE :_HORIZONTAL _ ELEVATION IN MONITORINGWELL (1998) 60 120 cn VERTICAL SCALE IN FEET o / - w Notes: 1. The subsurface conditions shown are based on interpolation between widely spaced explorations and should be considered ��,s, CROSS SECTION A-A' = approximate. Subsurface conditions may vary from those shown. \\�,/ J 2. Refer to site plan for MW and SP offset distances and other surface features. Ge0``�Engineers FIGURE 4 • s O Block Valve Enclosure S2 Maplewood Golf Course • o in • W o NN West Boundary N , , B - B • 1 lg i i a OPLC Pipelines (16" & 20" Diameter) g g 1 t g 60 • •• '15 �:71-0. , v7.--b� :. °ram-a'e ' _' ' _ Alluvial•Silt ,and•5ilt 'Sand r _ ..,..9,., ,.. :o ^�� b. . . . .. . .•-to ".3 -`_..- :e.:..a,..• .3•:::y":::R..;..:.:.. . •...it: :U.:.. .a. :3,....;„....' � � • cr.o-n:T .o..T....0. p.o;U"'!'h'7i��o'v`''. •.o... ,...o.. .0.. � ..°•:-a.G �-a' .•. �yA..?.°�so•.•�...o..O°.. 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Q::P:t:;o.o p.':d:..4•'o._b_:D•°. t.4.:.h'_ •_•f_.---- 0- -60- s 0 c o Pre—Glacial Sediments -120- C 0 i -180- 4) 0 0 > 4) co -240- 1-1-1 - rn ., \ o r N 0 , -. _ _-- - - ---- -:7- --- - . -300- _ ____ --- - • _ -• --_ - - Tertiary Sedimentary Rock 7. o 7-- - // //// / 0 — —-- EXPLANATION: -360- o I BORING • / ,� HORIZONTAL SCALE IN FEET 0 I 0 120 240 0 — WELL SCREEN a) - O 0 VERTICAL SCALE IN FEET 120 60 / • v - APPROXIMATE WATER TABLE w • ELEVATION IN MONITORING WELL Notes: 1. The subsurface conditions shown are based on interpolation .... between widely spaced explorations and should be considered �� = CROSS SECTION B-B' = approximates, Subsurface conditions may vary from those shown. Geo ��Engineers 2. Refer to site plan for MW and SP offset distances. `• FIGURE 5 0 3. MW-36 and• PW-12 are City of Renton wells. SP-7 G D )1 fill33 14.0 <10 -<20 '7 \ \V 15.0 <lo <20 MW-38 G D \ 17.0 <10 <20 O 12.5 <10.0 <10.0 \ 18.5 <10 <20 O / \ TP-1 TP-12 c D O SC32 M W-43 G D *P-2 \ 11.5 170 3,100 • 12.0 387 1,240 ` 14.0 670 35 SP-6 G D • H E Q' 15.0 <,0 <20 6 S O�� pralk..A - TP-3 G D 16.5 <10 <20 12.0 <10 <10 31 y�Q 34• AS-1 G D 13.0 <10 <zo 0 \� 13.5 1,290 639 _ ❑ SP-12 G D i<9. �1 TP-10 c D MW-41 G D 30\10 :2,1,.. 15.o <10 <zo0 1 ST �� 1z.0 z20 4,080 15.5 <5.00 <10.0 13.0100 1,900 SP-5 G D •22 ;•''S'.,- / 12.0 <10 <20 ` TP-5 TP-4 c14.5 240 1,920 11.0 <10 <2D 20 12.0 250 2,200 TP-11 G D SP-10 G D •14 �RW3 TP-6 - 12.0 2ao a,600 18.0 25 480 12.5 <10 <20 8 A 17 • / SP-1 G D SP-9 G D tu 37 'in. till11111111111.111ff' •15 SP-11 c D 1 z.o <10 <zo 0 O /' 12.5 <10 <20 13.0 330 6,200 16.0 180 3,200 Ct 0�, 16.0 <10 <20 19.0 <10 <20 19.0 70 1,200 0 LIJ 26 `, + TP-8 SP-2 G D {� 15.0 <10 430 V : - / 16 17.0 <10 <20� SP-3 G D SP-8 G D illie 15.0 <10 <20 4)M W-40 c o 19.0 <10 <20 17.5 <10.0 <10.0 21 / G1 SP-4 G D Mqp `�Q\' 15.0 90 1,700 G1 16.5 <10 <20 MW-39 G D CF ��<<� \Qe\\�e �Oe� c o 15.0 <10.0 <10.0 ly� ,, e s�(� SP-13 Y a 7 �p Q`Qe 15.0 70 590 00 17.0 <10 <20 N o RAILROAD / 2O7Z sF 6Ty 111, 411# St / a 414 7 o s N R. \ o ��D.G / EXPLANATION: 00 P �F` ci G GASOLINE-RANGE HYDROCARBONS (mg/kg) % 2Q � � / 0 0 100 200 '' BY ECOLOGY METHOD WTPH-G D�z / D DIESEL-RANGE HYDROCARBONS (mg/kg) rn SCALE IN LPA BY ECOLOGY METHOD WTPH-D j SOIL SAMPLE DEPTHS IN FEET 1Li BELOW GROUND SURFACE Notes: 1. The locations of all features shown are approximate. Refer to Figure 2 for complete legend. ��,�e� PETROLEUM HYDROCARBON CONCENTRATIONS _ , 2. TP-7 was situated in the same location as SP-11. . IN SOIL, APRIL & MAY 1998 6 Reference: Drawingentitled "Cedar River Recovery Area Plot Plan" by Olympic Pipe Line Company, 10/16/86. Geo �Er�g�neers FIGURE 6 o - 174wr4fr . ,..... '''Illgl o _ ,o o0 :ase of Valley lope SF O T 1 6 0 o TP-2 TH St o �. 32 1� 4' o H A V E S '�'•� C:22), C:22) 6 - �� o TP 2 ^DTP-3 ci SF 0 ' P • _ 29• •31 S7E // . •ED 10 0 4\7 .•.• . .• . .• • . .• . .•..• 30 :•'. SiT- ,i Site 0 C22) • . ID •oo. M A s • T .W` . 3•. ' H F PT6• Kli (� Riverview 3• �. .; • . ' • • •: • ego Park 26 <' SFE3 •40 Q 0 •/ TP-8• �` / 4• \': •: •' •': •' 1 ;�7 FtWiz.• . :may 1 St / 1 1\ 09 021 �Gl \ \ 39 • 024 / �`pe �G1 \ \ 0 e e , e , . --..._ , <,,,s. co -.� /, ---__, CI 7 ..... N \ \�` RAILR,AD �� IP �� / S CO 0e 27 61x, �� o Base of Valley Slope 7 N N �¢i. / 1:1ST �� 1!" IIII o N zLP 441e#• / 4011, Q� A 3 EXPLANATION: N o 7 '\\ / SR N SP-1 \ SOIL PROBE (APRIL 1998) i r' 169 \ rno O. N 1 • MONITORING-WELL �SFO 6- co i _- / 4- / N GROUND WATER DISSOLVED TPH PLUME �2J 2)-• / o 0 Notes: 1. The locations of all features shown are approximate. Refer to Figure 2 for complete legend. co o 2. The dissolved TPH plume comprises the area for which April through May 1998 ground water samples 0 100 200 w were greater than the MTCA Method A cleanup level of 1 milligram per liter (mg/I) for the • sum of gasoline- and diesel-range hydrocarbons. Some locations which did not SCALE IN FEET exceed MTCA Method A are included within the ground water dissolved TPH plume limits Y shown based on our review of soil TPH data and our knowledge regarding the limits of the �. GROUND WATER DISSOLVED TPH PLUME = historical LNAPL plume. " River RecoveryArea Plot Plan" byOlympic Line Company, 10 16 86. Geo �Engineers �' J Reference: Drawing entitled Cedar Pipep y, / / �� FIGURE 7 0 Figure 8 Olympic Pipe Line Company Remedial Action . Maplewood Neighborhood y Jun Jul Aug Sep Oct Nov Dec ID Task Name 5/17 5/31 6/14 16/28 17/12 7/26 8/9 8/23 I 9/6 9/20 10/4 10/18 11/1 11/15 11/29 112/13 1 -Cleanup-Action-Plan-(CAP) 2 Submit Draft CAP to City and Ecology ♦7/20 3 City,Ecology Review Draft CAP • 4 Incorporate City and Ecology Comments It 5 Publish Final Draft CAP ♦ 8/11 - 6 Public Meeting with Maplewood Residents ♦ 8/20 7 Final CAP Published ♦ 8/21 8 Air Sparging Remedial Option 9 Final Design ^ •p: 10 Construction Plans and Specifications to City,Ecology 8/24 11 Permitting er sx", a *4>A rz: 12 Solicit Contractor Bids for System Install m•Om:i::.::,:iVe 13 Select Contractor ♦ 9/14 Ne 14 Receive Permits 9/28 15 Air Sparging System Construction '% 3 ;;r 16 System Startup 17 Begin Routine 0&M System Monitoring • 10/29 18 Monthly GW Sampling I I 26 Quarterly Progress Reports O O 29 Quarterly Progress Reports • GeoEngineers Page 1 Prepared 6/24/98 A --..,„,wqr --=imur : O -4111111111r . Existing Base • Valley Slope / -')\ S O Vault \ F O Equipmen nlosure \ II7 6Th' St O 32 East Branch) O H AVE �� SAS-3 O6 I (::2 S F' P AS-2 29 C..] 03 0QQ� 3404:27 . --\ lie . 4 ► F, AS-7 AS Block 25 i1�' 30 Valve . • 30 ./ 18 Site 0 ..f/ !AS-S-`• 0 / ,/' g 'AS-4 • 10 C2C2 . 041 220 /,1"/ -/' AS-9 ;:>: / / O O f'//./`!'C',7 0 ! • AS-5 O /..;cf;„/;\ )81 AS-11 ,. 2 M4p4F V AS— 9 14 72:7 AS-1 •,,� 'f� R e3 Existing Underg' Std STy o8 � 0gS_18 Conduit Bene pRW-1 AS 131170 . 1- SE 5th ST/Oa AS-17 l AS14 aeo6 o C�y 4 ❑ \Riverview 3 2 �, } /ParkAS-1:�,} 'As-15 Air Spar ' g P .e Trench (T 44,40 VRW-2 16 iie 040 Propose qu •ment Enclosure \ 12 (West Bran• ) �\ �\ 021 dOOPP1417111111111P/ �\ 39 9 ❑24 / ` 61 Si oe\- �_ Q�Q e \\ --_ a 7 p, ‘ / 00 �� / GJ RAILROAD r c•ISe �� \ 00 27 / sty I . o QQ,, / a S Base of Valley Slope T U N �f'z• �v� N Z� 2 EXPLANATION: i _4 o o UNDERGROUND VAULT FOR�P�PE NIFOLD / SR, \ I 1 MONITORING WELL \ r'Oo, 6g AS-1 ® AIR SPARGING WELL X �s / N o AS-2 181 PROPOSED AIR SPARGING WELL x / <6�F-,,\ ��ij� c/, 37 0 ABANDONED MONITORING WELL , Z 0 10 o MONITORING WELL NOT LOCATED IN 1998 / -, rn RW-1 V ABANDONED RECOVERY WELL / 03 o VRS-1 t 1 ABANDONED VAPOR RECOVERY SYSTEM 0 100 200 Notes: 1. The locations of all features shown are approximate. Refer to Figure 2 for complete legend. SCALE IN FEET 1 Y 2. Proposed well and piping locations subject to underground utility clearance. Equipment enclosure ,ma`s, 1AIR SPARGING WELLS AND PIPING LAYOUT location for west branch subject .;to change. Geo Engineers o Reference: Drawing entitled Cedar River Recovery Area- Plot Plan" by Olympic Pipe Line Company, 10/16/86. �1/ :I FIGURE 9 z 1 ' .. 1 . FLUSH GRADE OR BURIED LOCKING%ELL MONUMENT•--\ , . EXPANDABLE YELL CAP _./ m. 4* , ' . . , . MONUMENT SET IN CONCRETE , - ' —2"GALVANIZED --"r7.7 ,.1..'• CHECK VALVE , AUGERS)BOREHOLE -...—AIR SUPPLY UNE '''' .• FROM MANIFOLD .. 2"SCH 40 PVC TEE ...:. ,.:. :• 2"PVC PIPE ic:;','•,li'..• .; SEE DETAIL B r OR 4"GALVANIZED PIPE ..i,'.. t ...‘' .:.fi. t ammAtiam :::'ir: , .).• . 2"DIA.SCH. 40 PVC TEE(TYPICAL) , 4 WELL CASING(3*-225) 175' :... .i" 21' CALV/NIZED 2/S' WI EMU.% :, 'P:& ELBOW(TYPICAL) '1.. • WATER TABLE • .:I. ; II III PEI APPROXIMATELY Ee- 13'BELOW GRADE (OVER SEASONAL FUJCTUAllON) t :N. ..4.•.; t t t 0 0 0 0 . '•:••"' "4•••• 11% It •... 4‘ ' '. • I "-- ilWONIPOIPPOI 1 i 1E11'97.-.. "IiiiiRITARMR4 Mtli•9113 CO COAVa #.44 #14,151 II Z.'', '..r.:": ' i •••—•••90*-61.61i1F,. ---To • • • • • • 4 a.a.alka.a.a.ali=L;T:m.... ...-,.:!-'91iLF1 1-is_•_a a a a a x OR 4" RALL/OLOBE VALVE(TYPICAL) • — — — —$1:4%.>' ''.• '71i- : ''Y- ', % :i ..:: ,•,..,1 , t g- 11 rE-fil );,41*?-se.,:•44-0.i§f.c illji—frEF t Ow ri rim Wig CEMENT-BENTONITE GROUT ..•••• :.• =H 1 11=111=1 3110e. way.,‘_, 1/4, H • • • • .. .. 1... ''. 1 / 2'MN 1= i—H g . . r_. ACTID, . t.....p..,,......% -=I . PRESSURE El t :'r.: ;cf ' jf—MT— 0)6%4, ..vt,gp/..54,c. • ILLITtLir REDULARRE CITPTCL) *.i•, 11',...;,..: / UNDIS111REM SOIL 1=11 I=Trr ZIP?,<,)C .A.04:)C4''•-W1-.71,--=' ETI El Li III MIN. r BENTONITE SEAL • "" . • • ANNULAR SPACE FILLED girilaraMillailtalines BURIED PIPE DARNER 0-25 SUM SIGHT , it -WITH SAND MAK 2'ABOVE SCREEN (METAL) FLOMIEltit '0 I V I .0 ,.....—0-16 PSI AR PRESSURE . 10 GOUGE(TYPICOL) 2"SCH.40 PVC CAP ,i62.44`...0:;:...-_.:..- 2' SCREENED INTERVAL(SPARGE) r liximilm r OR 4"SCH 40 PVC AIR SUPPLY LINES (nincm..) (rni'cc) • HOSE _ SAND.PIT-RUN CR RECINIPACTE0 NATIVE BACKYILL - COUPLING • --- VARIES 1'MK ---I • • • • mrpor.Ay CO Note Depths"holm will vary dependin on g son condition' = cn - encountered at the Urns of drilling. i , ••...,. AR SUPPLY LINES TO -.=- = Id AIR SPARGING PIPE TRENCH CROSS SECTION PR SPARGING DELIS cnp DAL) ._-,.._. -- ,_. TYPICAL CROSS SECTION - AIR SPARGING WELLS UNPAVED AREAS r-- AIR SPARGING SYSTEM HEADER/MANIFOLD o DETAIL A DETAIL B DETAIL C , • NO SCALE NO SCALE NO SCALE , . • , • ._, C . . . 0 . • , es1 1 0- 0 •st cn co o 1 / CNI . 0 0 EXPLANATION: ..,. . .4- cn AIR FLOW PATH (THEORETICAL) , co o . , .PROPOSED AIR SPARGING SYSTEM .— 9 CONSTRUCTION DETAIL _ — i Geo‘ Engineers , 6 FIGURE 10 0 - 1 • i • MANIFOLD (TYPICAL AT MANIFOLD, AIR INLET SILENCER, PRV CD O SEE DETAIL C) IF REQUIRED CLEAN OIL-FREE AIR AI Del �- �R CI Q TO AIR SPARGING WELLS i(---- ' — .0 ATMOSPHERIC -PARTICULATE _ AIR -- FILTER SI HM 0 X..._ _...) oILLESS COMPRESSOR MOTOR STARTER ►TO ELECTRICAL WITH WEATHERPROOF CONTROL PANEL • SUPPLY coVER (NOTE 3) (NEMA 7) • PROGRAMMABLE TIMER I • AIR SPARGING -SYSTEM ca cn cn CO 0 • LEGEND o SI = SERVICE INDICATOR GAUGE • LOM = LOW OIL MONITOR _1 SI = HOUR METER APR = AIR PRESSURE REGULATOR o -/0 = ON/OFF LIGHT/START/STOP AFR = AIR FLOW REGULATOR 0 rn NOTES: -® = TEMPERATURE GAUGE AFG = AIR-FLOW-GAUGE 00 = GATE VALVE N .1. ENCLOSURE WITH PROGRAMMABLE TIMER CONTROLS © = PRESSURE GAUGE M oo FOR "INDIVIDUAL ZONED" CONTROL OF ELECTRIC 0 = VACUUM GAUGE psQ = GLOBE VALVE SOLENOID. PF = PARTICULATE FILTER -.. - = AIR FLOW • PRV = PRESSURE RELEASE VALVE — — = ELECTRICAL SIGNAL rn co 0 2. ALL ELECTRICAL EQUIPMENT AND WIRING SHALL PS = PRESSURE SWITCH . BE IN COMPLIANCE WITH NEC AND LOCAL CODE CuREQUIREMENTS. 3. HEAT EXCHANGER SHALL BE ADDED, AS NEEDED, TO •a�� PROPOSED AIR SPARGING SYSTEM REDUCE MAXIMUM AIR TEMPERATURE TO 140'F WHERE -./ CONCEPTUAL FLOW SCHEMATIC I PVC PIPE IS USED. GeO� EnglneerS el FIGURE 11 J t 0 Air Sparging Injection Flow Rate and Pressure (AS-1) 20 ■ 18 II -- 16 - — • ■■ a 14 — -- — - 1 L 3 d 12 — — --- 22 0 10 — -+-Flow Rate (cfm) as 1 -■-Air Injection Pressure (psi) 0 2 8 --- - — — --- co Q c6 - — — — -- u' Sparge Test Start Up 4 6/1/98 1645 _ • Sparge Test Shut Down 6/8/98 1450 2 -*-- - •i ♦---- 0 , # �,ga0,3 o, 96o•66 oo 196o, g$o- 9$6•66 96o. 96cs- 9$o. 96a. 6\ 6\� 6\5 6��, 6\6� 6?6\ 6�\ 61$� 6\9\ Date:Time Figure 12 Olympic Pipeline Company 0894002\finals\spargedata.xls\AS-1 Flow&Pressure Maplewood Neighborhood Ground Water Elevations: MW-38 and MW-43 8.0 8.5 - - 9.0 -- a> u I a) 'al 9.5 - - - - -- --- -a --*-MW-38 (6 feet from AS-1) cSparge Test Shut Down L 6/8/981450 --N-MW-43 (12 feet from AS-1) 2, a a) a 10.5 I 11.0 Sparge Test Start Up 6/1/98 1645 11.5 5\10\9�00° 5\� I9$o 0Q �j2°19�� e°On �`3�19�� ° e°6\°\9�' 6\g\g��ofl 6,`klg 5 6\�9t°�$�� \2°\`�$�� 6\29\9�'e° Date: Time Figure 13 Olympic Pipeline Company 0894002\finals\spargedata.xls\GW MW-38 MW-43 Maplewood Neighborhood Ground Water Elevations: Other Wells 10 10.5 - 11 d �. • -4--MW-13 (385 feet from AS-1) Y �..-r'"""_ -U-MW-17 (305 feet from AS-1) 16 _ MW-18 (90 feet from AS-1) 11 5 -x-MW-19 (80 feet from AS-1) c -4E-MW-20 (87 feet from AS-1) ° -ram'� t- -0-MW-32 (190 feet from AS-1) a 12 +MW-14 (480 feet from AS-1) s MW-15 (515 feet from AS-1) Q. o MW-16 (530 feet from AS-1) 12.5 t _ 13 Serge Test Start Up 6/1/98 1645 Sparge Test Shut Down 6/8/98 1450 13.5 , - I r .. I r I I 00 00 00 00 00 00 00 00 00 00 00 $O. $0• a0• $0• 0.0• $0• $0• $0* $0• a0• a0• \\019 \��,9 6\rL019 (J1r1,\ 4P b\6'q b\q 6`,�A�,g 6\Nq 6\2P‘ 6\25 ., Date: Time Figure 14 Olympic Pipeline Company 0894002\finals1spargedata.xls\GWlevels other Maplewood Neighborhood Ground Water Dissolved Oxygen Concentrations Sparging Conditions 14 12 10 a) c d 8 ar x 0 • 6 0 co 0 4 2 III0 , , , PP oo * I A''‘ I Monitoring Well _ Figure 15A Olympic Pipeline Company 0894002\finals\spargedata.xls\GWDO Maplewood Neighborhood Ground Water Dissolved Oxygen a C I Wells Outside Plume 7 — I L Wells With Dissolved Phase Petroleum Hydrocarbons 6 - -1-- -- -- — — 1 Average =4.3 mg/I c (excluding MW-42D E5 — — — �erage =3� e (excluding MW-43) is X 4 I — i- — -- �r ■ 3 1 1iLiiT X. , ,, It 1 "' t <° 4\* ��°\��\\11, ��\O- e' e°° °��*N*t. erg�24�\'`°chi'``'4\`6\o- ,0-c 4,1\ 4\* 4\* s�o e��e�24�a�°4'ya�� 5 �S'a� Monitoring Well Figure 15B Olympic Pipeline Company 0894002\finals\spargedata.xls\June24welldo Maplewood Neighborhood MW-43 Well Casing Airspace: Air Sparging Test 25 20 Ambient Air Oxygen =21 Carbon Dioxide =0.03 o 15 —-- -- 0 —♦—Oxygen (%) a -15--Carbon Dioxide (%) 10 7 5 0 6\1\9666 603'6 6 6\3,* 6\a\9$060 0,y\9� p0 616,g$�UD 6�'9�p0o 01�198p� 6'9,g��0 6\4°6p0� Date: Time Figure 16 Olympic Pipeline Company 0894002\finals\spargedata.xls\MW-4302CO2 Maplewood Neighborhood 1 1 r r MW-38 Well Casing Air Space: Air Sparging Test 25 20 Ambient Air Oxygen = 21 Carbon Dioxide= 0.03% 15 -- — — — . 0 —.—Oxygen (%) S. —is—Carbon Dioxide (%) 10 — 5 ■ ma 0 - , , , 61.\1g6000 617g6000 09.6000 6yrk19$000 6 196000 6i619$000 6�1956 00) - c3b\b000 6b10 614\cA 00) Date:Time Figure 17 Olympic Pipeline Company 089400216nals\spargedata.xls'\MW-3802CO2 Maplewood Neighborho Vapor Concentrations in Monitoring Wells During Air Sparging 900 - ---�-- 800 - - a 700 -- --- a 600 .., r �-MW-38 (6 feet from AS-1) - --f-MW-43 (12 feet from AS-1) 500 r MW-18 (90 feet from AS-1) a -w-MW-19 (80 feet from AS-1) 400 - -MW-20 (87 feet from AS-1) • Ta l0 Sparge Test Shut Down 618/9 300 - - 1450 O Q Sparge Test Sta ii 200 6ir11an iryst- 100 6\1`9��00 642`98p0 6` 1gapp0 60� 0�5�9�000 6�6�9$000 6��9$000 6\a\g��p0 6\9'��pp� 6,,0'9iS�. Increased Air Injection Flow Rate 6/4/980800 Date: Time Decreased Air Injection Flow Rate 6/5198 1700 Figure 18 Olympic Pipeline Company 0894002\finals\spargedata.xls\Vapor Concentration Maplewood Neighborhood TPH Concentrations in Ground Water Before, During and After Air Sparging 500 450 400 Cf E 350 CA C) d h 300 c —�--MW-18 ca = 250 —E-MW-19 c MW-20 ea —x—MW-38 200 0 cn E 150 = Sparg Test Shutdown a 6/8/98 100 Sparge Test Startup 50 • 0 _. • 05/10/98 05/15/98 05/20/98 05/25/98 05/30/98 06/04/98 06/09/98 06/14/98 06/19/98 06/24/98 06/29/98 Date Figure 19 Olympic Pipeline Company 0894002\airspargingGWtestingtABLE.XLSConc vs Time Maplewood Neighborhood 1 ') - l ,. ., Ir - — \ - II, \ I' / \ /J / l I I '� \ ' 1I r \I\ _ } 1 . — '-/ • V , , .•,q, / _, ,i, ,,,H - i�/,=- \., I r f II 1 , I ,I / - ,\ ( -• ' ) , 1 _ - ' 1 I \\ \- • \. I I h '..t.\ _ 1%�\ ''1' \ , ( \,' ` 1'I'' \, /\ I\1 1,/ , / r I 1 . i ( / ) •' (( • / - / ' • T / ( 11• 1 • I ,' 1 .1\ I ' • !}j ' 1, / f \ „' / I. l \ • s i / !\ c I \ \ 1 1 • r , ' \\ \ \ \ • • ^ / / \ • s / 1;t ' - - ' • \ ' ' i' / \ I' /I % \ I \ , • l 1 1, ( 1 1 f r 1 I ( I." APPENDIX A ^ r - - I ."' ! (l i;. \, \ • r i / � , r \ . / I 1 /, /" r - I • V . _ \ i ., , I/ , ) J11 { 1.. l 1 1 i (� 1 \, (• •• 15 -1 /t- ) \ , ti n - ,( ', / \ �, 1 ,�1 \\ , / r! I ,\ 1 1 \ H '1 r; \ A• . \ l j( I ' \ 1 \. f ( / < 1 \ - /` - V ( \ I I L t J / I / • ' I1 ''',/(1 ') I , / 't \ ) }' /.. l \i( '\1 I III /.t I / ( ! • / , ,( .. i 1_- / \ /( Y \I , / I � •rr I •! I r I" % \ • \. 1 _I \ f / _ / ;' \ r - 1, .�, , ' I \ ( `)�' -. -I f-) ! - I f / `; \ ' -' ,I. J' 1r r / .! (. . I \ \ ' _ \ • ' • r• i I•1 i ' \\ • i ,i • /r '� ,, I I \ ( .r 1 _ \\ • ;, r' r I I I • Y ( 'V• I ,• 1, 1 I r\1\ \ 1 ! • ( / 1 - I \ ( 1 i ( l r I I \ I , \ i, r • . - 1 1 , . I � APPENDIX A MAY 1998 FIELD EXPLORATION PROGRAM GENERAL Subsurface conditions at the site were explored by completing seven borings (MW-38 through MW-41, MW-42 Shallow, MW-43 and AS-1) using hollow-stem-auger drilling equipment and one boring (MW-42 Deep) using cable tool drilling equipment. Hollow-stem auger drilling services were provided by Cascade Drilling Inc. of Woodinville, Washington. Cable tool drilling services were provided by Holt Testing of Puyallup, Washington. A geologist from our staff selected the exploration locations, examined and classified the soils encountered, and prepared a detailed log of each exploration. Soils encountered were visually classified in general accordance with ASTM D-2488-94, which is described in Figure A-1. The boring logs are presented in Figures A-3 through A-10. DRILLING AND SOIL SAMPLING The shallow hollow stem auger borings were drilled to depths ranging from 20 to 51 feet below ground surface (bgs). The hollow stem auger sampling equipment was decontaminated before each sampling attempt with a Liquinox solution wash and a distilled water rinse. Soil samples were obtained at varying intervals from continuous to 5-foot depth intervals for field screening. At least one sample from each boring was selected for chemical analysis, based on field screening results and the depth of the sample in relation to the water table. The soil samples were kept cool before and during transport to the laboratory. Chain-of-custody procedures were followed in transporting the soil samples to the laboratory. The deep boring drilled by cable tool methods was completed at a depth of 302 feet bgs. Samples were obtained at 10-foot intervals for soil classification. FIELD SCREENING OF SOIL SAMPLES Soil samples obtained from the borings were screened in the field for evidence of petroleum- related contamination using (1)visual examination, (2) sheen screening, and (3)headspace vapor screening with a Bacharach TLV combustible gas indicator(CGI). The results of headspace and sheen screening are included in the boring logs and in Table 2 for soil samples tested by chemical analysis. Visual screening consists of inspecting the soil for stains indicative of petroleum-related contamination. Visual screening is generally more effective when contamination is related to heavy petroleum hydrocarbons, such as motor oil or hydraulic oil, or when hydrocarbon concentrations are high. Sheen screening and headspace vapor screening are more sensitive methods that have been effective in detecting contamination at concentrations less than regulatory cleanup guidelines. ! r, G e o E n g i n e e r s A-1 File No. 0894-002-00/081198 Sheen screening involves placing soil in a pan of water and observing the water surface for signs of sheen. Sheen classifications are as follows: No Sheen(NS) No visible sheen on water surface. Slight Sheen(SS) Light, colorless, dull sheen; spread is irregular, not rapid; sheen dissipates rapidly. Moderate Sheen(MS) Light to heavy sheen, may have some color/iridescence; spread is irregular to flowing; few remaining areas of no sheen on water surface. Heavy Sheen(HS) Heavy sheen with color/iridescence; spread is rapid; entire water surface may be covered with sheen. Headspace vapor screening involves placing a soil sample in a plastic sample bag. Air is Captured in the bag and the bag is shaken to expose the soil to the air trapped in the bag. The probe of a TLV combustible gas detector is inserted in the bag and the instrument measures the concentration of combustible vapor in the air removed from the sample headspace. The TLV measures concentrations in ppm (parts per million) and is calibrated to hexane. The TLV is designed to quantify combustible gas and organic vapor concentrations in the range between 100 and 10,000 ppm. Field screening results are site-specific and vary with soil type, soil moisture content,temperature and type of contaminant. WELL CONSTRUCTION Ground water monitoring wells were constructed in borings MW-38 through MW-41, MW-42 Shallow, MW-42 Deep and MW-43 at the completion of drilling. An air sparging well ri was constructed in AS-1. Two-inch-diameter, Schedule 40 or Schedule 80 PVC (polyvinyl chloride)pipe was used for the monitoring and air sparging wells. The lower portion of the PVC pipe is machine-slotted (0.02-inch slot width) to allow entry of water, free product and vapors p J into the well casing. Medium sand was placed in the borehole annulus surrounding the slotted portion of the well. The well casing is protected within a surface monument with a lockable compression cap. The shallow wells were developed by GeoEngineers using handbailing techniques. Approximately 5 well volumes of ground water were removed from the each well using a stainless steel bailer. Development water was transported to GeoEngineers for disposal into the sanitary sewer in accordance with Metro Discharge Authorization 529. MW-42 Deep was developed by Holt Testing using air lift techniques. Approximately 585 gallons of water were removed from MW-42 Deep during well development. lip GeoEngineers A-2 File No. 0894-002-00/081198 1 . SOIL CLASSIFICATION SYSTEM Owl GROUP MAJOR DIVISIONS SYMBOL GROUP NAME GRAVEL CLEAN GW WELL-GRADED GRAVEL,FINE TO COARSE GRAVEL COARSE GRAVEL GRAINED GP POORLY-GRADED GRAVEL SOILS More Than 50% of Coarse Fraction GRAVEL GM SILTY GRAVEL Retained WITH FINES on No.4 Sieve GC CLAYEY GRAVEL More Than 50% SAND CLEAN SAND SW WELL-GRADED SAND,FINE TO COARSE SAND Retained on 1 No.200 Sieve SP POORLY-GRADED SAND More Than 50% of Coarse Fraction SAND SM SILTY SAND Passes WITH FINES No.4 Sieve SC CLAYEY SAND FINE SILT AND CLAY ML SILT GRAINED INORGANIC SOILS CL CLAY = Liquid Limit Less Than 50 ORGANIC OL ORGANIC SILT,ORGANIC CLAY Mor I Than 50% SILT AND CLAY •MH SILT OF HIGH PLASTICITY, ELASTIC SILT INORGANIC Passes CH CLAY OF HIGH PLASTICITY, FAT CLAY No. 200 Sieve Liquid Limit 50 or More ORGANIC OH ORGANIC CLAY,ORGANIC SILT I u HIGHLY ORGANIC SOILS PT PEAT I NOTES: SOIL MOISTURE MODIFIERS: i 1. Field classification is based on visual examination of soil Dry- Absence of moisture,dusty, dry to the touch in general accordance with ASTM D2488-90. ' Moist- Damp,but no visible water 2. Soil classification using laboratory tests is based on ASTM D2487-90. Wet- Visible free water or saturated, usually soil is obtained from below water table t 3. Descriptions of soil density or consistency are based on interpretation of blow count data,visual appearance of •;_. soils, and/or test data. a r, 0 u ; 10 SOIL CLASSIFICATION SYSTEM co Geo /Engineers Izi c FIGURE A-1 i LABORATORY TESTS SOIL GRAPH: CA Chemical Analysis SM Soil Group Symbol (See Note 2) FIELD SCREENING TESTS: Headspace vapor concentration Distinct Contact Between data given in parts per million Soil Strata Sheen classification system: Gradual or Approximate Location of Change NS No Visible Sheen Between Soil Strata __ SS Slight Sheen MS Moderate Sheen 2 Water Level { HS Heavy Sheen NT Not Tested Bottom of Boring BLOW COUNT/SAMPLE DATA: 22 I Location of relatively Blows required to drive a 2.4-inch I.D. — undisturbed sample split-barrel sampler 12 inches or other indicated distances using a . 12 ® Location of disturbed sample 300-pound hammer falling 30 inches. 17 El Location of sampling attempt with no recovery 10 0 Location of sample obtained Blows required to drive a 1.5-inch I.D. in general accordance with (SPT) split-barrel sampler 12 inches Standard Penetration Test or other indicated distances using a (ASTM D-1586) procedures 140-pound hammer falling 30 inches. 26 m Location of SPT sampling attempt with no recovery Location of grab sample "P" indicates sampler pushed with weight of hammer or against weight of drill rig. l I NOTES: 1. The reader must refer to the discussion in the report text, the Key to Boring Log Symbols and the exploration logs for a proper understanding of subsurface conditions. 2. Soil classification system is summarized in Figure A-1. KEY TO BORING LOG SYMBOLS Geo "En ''veers ,/ Gt FIGURE A-2 I ,• MONITORING WELL MW-38 WELL SCHEMATIC - • • ' • , Casing Elevation(ft.): 64.95 Vapor .---' 1 Casing Stickup(ft.): DESCRIPTION Conc.(ppm) Blow Group L Sheen Count Samples Symbol Surface Elevation(ft.): 0 Steel surface 4-0 SM Brown silty fine sand with trace of organics(very - - _ I I monument and loose,moist) - - - - - - concrete seal - -44-Bentonite seal - •. -.• -- <100/NS 3 El - :•.•.4-4L-2-inch Schedule 40 - PVC well casing -5 • -•• -•.... <100/SS 5 (81 - .- -••. :: _•..: SP Brown fine to coarse sand with occasional fine - - ,•., -.4 .--2-inch Schedule 40 <100/SS 22 gravel and wood debris(medium dense,moist) - _ • __., El .-..•. PVC screen,0.02-inch _ : _ ... •*:-'- slot width__... 1ur,- 8 Wood debris:: - ••- ••:--'•• - -10 .• -.••. a Approximate water level 06/24/98 _ 1-' - :': =•'.:: - • i. - :.: . =::4L.-10-20 sand backfill - •.__.. - ,. __•.•. -/MS 14 CAM SP Gray fine to coarse sand with fine to coarse gravel _ .••-•. ---, 15-- •::=:.- -15 :: __•... :_ } •.__•.. - :: =•'.:: <100/NS 11, (8) _ i- . _.... _ :: _ .•. . - ---- in 1 z .•_.•. -INS 0 El _ i- :: _:.•. - u ja- 20- :1: *:*-PVC threaded end cap - ::SM Brown silty fine to coarse sand(loose,wet) -20 ..••••... 0 - :.'.•',••:::.: Base of boring at 21.5 -INS 6 ig - •..• • Becomes loose at 20.0 feet feet Boring completed to 21.5 feet on 05/05/98 _ . - - 25- -25 - •- ,ca , - - 30- -30 -..Q. P. 0 _ _ I ' - i 1 . 1 ' - -,-- 1 1 1 35- -35 ,_ • -- _ , 1 N _ - o 1 t- 40— i 1 —40 ' Note:See Figure A-2 for explanation of symbols LOG OF MONITORING WELL Geo P ,.. Engineers -.or FIGURE A-3 • I MONITORING WELL MW-39 WELL SCHEMATIC • . Casing Elevation(ft.): 66.54 Vapor ' .1 DESCRIPTION i Casing Stickup(ft.): Conc.(ppm) Blow Group o .. Sheen Count Samples Symbol Surface Elevation(ft.): 0— . —0 I I Steel surface • SP-SM Brown fine to medium sand with silt(loose,moist) _ 1'—' • monument and J • — — concrete seal _ . . . - = :7--r-_—Bentonite seal <100/NS 6 E : - - = = •5_ . —5 _ — — <100/SS 4 E i _ - — — , • • _ .. .. . ..: 2-inch Schedule 40 <100/NS 10 0 : . _ - ,... ... 1 :' •.': PVC well casing .-. .- 10— ---;;"'< SP Brown fine to coarse sand with fine to coarse gravel —10 (loose,moist) .- —•• _. <100/NS 6 El. - ...__• 4 ,.._... - :•: =•'.:: <100/NS 5 0 - • ----. • 15— ^•':='•••• 1 ': •.:: <100/SS 6 CA El —15 i— - ••: "..--,-. -2-inch Schedule 40 - - LU 1 w . ._... •'-••• PVC screen,0.02-inch ..*:=:•-. slot width <100/NS 20 E a Approximate water level 06/24/98 = _ i— .• —••. -- CL 20— •••:=:.. —20 - •:: —•.: <100/NS 40 0.. _„...••••:". - :: =:;«-10-20 sand backfill .%''" SP Gray fine to coarse sand with fine to coarse gravel _ • —.••. (very dense,wet) : —..-• ---1 - ••—• <100/NS 47 El _ : -..-. 25— :. —•'.:: —25 ,•.__•.. - --=...:: <100/NS 39 E _ .•.__•.. :*:.--••.:: ii7.. .. ; 7—Slip cap with screws - - •-• • • - _ '.....•.•.'_ _ -11 30— Boring completed to depth of 29.0 feet bgs on —30 0, - 05/05/98 - , 35— -35 — - _ c:i _ o 40— —40 Note:See Figure A-2 for explanation of symbols ,--, Geo Engineers c ..... ..., p LOG OF MONITORING WELL _ — allk /I FIGURE A-4 ( MONITORING WELL MW-40 WELL SCHEMATIC. Casing Elevation(ft.): 67.10 Vapor 1 Casing Stickup(ft.): DESCRIPTION , Conc.(ppm) Blow Group Sheen Count Samples Symbol Surface Elevation(ft.): s-- 0— ,—ID _ • Steel surface 3 inches of asphalt - I I monument and SP 8 to 12 inches concrete pavement _ concrete seal Brown fine to medium sand(loose moist) — —- '„ ' SM.% -•- ' — — Brown silty fine to medium sand(loose,moist) ' I = = - = ---E—Bentonite seal <100/SS 4 to — — --5 1 ' _ - — —— — <100/NS 4 El - - -7 .'• .... - :'..•.-4-- -inch Schedule 40 - _ .' :.:' PVC well casing —/SS 8 (8] _ With fine to coarse gravel at 9.0 feet . • ... . —10 _ •.:: — •.• —/SS 19 N _ •: -:.•• . .. ' 50/6" SP-SM Brown fine to coarse sand with silt and fine to coarse - - ' - .: .._.'.- ...-.. .--2-inch Schedule 40 gravel(dense,moist) - • . ••._—...•. PVC screen,0.02-inch • ---- ...:=:... width • _ slot : _.. . —15 15— .-:—.•• ' • .: —•••• <100/SS 31 El : . _• • ..._.. •w - -, =:•.•. . - w • u_ • -••. • • _ ' z • -•• ••-.•. • • i ‘ <100/SS 22 CA N : 2 Approximate water level on 06/24/98 _- •:-= : -10-20 sand backfill .•_.. — i— .,-;;--.." SP Brown fine to coarse sand with trace of silt and fine ,93 20— '..:= ... —20 , 0 - . •-•'• <100/NS 40 El to coarse gravel(dense,wet) _ * —:.:: .•._.. .•_.., •••—•• —, : =:*.: .• —•• <100/NS 48 (81 - : —:.•. . ___.•. •.._., 25— .. —-.:: —25 - •.:,=::.:.: <100/NS 20 N _ h .. _.•_ : -:.-• - ••-•..:•1..•.-PVC slip cap with - _ .•.. ..• -.... ..:.: screws - .::- . -- Base of boring at 29.0 <100/NS 38 El _ 30-1 feet 30 Boring completed to depth of 29.0 feet bgs on — c.) - 05/05/98 - / _ - - _- - - I 35— 1—35 , - - --, - - 0 9 cm 40— —40 _-_ Note:See Figure A-2 for explanation of symbols r----- Lel LOG OF MONITORING WELL . Geo rig Engineers ,1441/P FIGURE A-5 MONITORING WELL MW-41 WELL SCHEMATIC Casing Elevation(ft.): 63.22 -- Vapor Casing Sfickup(ft.): Conc.(ppm) DESCRIPTION Blow Group Sheen Count Samples Symbol Surface Elevation(ft.): D— Steel surface SP 4 inches of asphalt pavement —0 monument and Brown silty fine to coarse sand(loose,moist) _ =- = concrete seal - _ - — —Bentonite seal = = 5— -5 — — - <100/NS 2 - - = -2-inch Schedule 40 - — — PVC,well casing — = Brown silty fine to coarse sand and occasional gravel - . (dense,moist) '•• •.• . • 10— .•'.• —10 <100/NS 36 • • - .•• - • -••• .•_ . -..•. _ .• a Approximate water level on 06/24/98 15— -•--2-inch Schedule 40 —15 = - • : PVC screen,0.02-inch <100/NS 34 CA ig•.__.. • —••• slot width Becomes wet at 16 feet •. LL.I - •___.• • 1.1.1 •. • .• Z .• —••. • • —••• - EL 20 •: GP Brown silty gravel with fine to coarse sand 1 • IA D 0 0 (dense, —20 0 .• —•• wet) rgio00 - =.:'47-10-20 sand backfill <100/NS 36 0 0 O 0 3 0 0 - : 0 0 _ 0° D 0 0 GP Gray silty gravel with fine to coarse sand(very __..• 0— • O 0 dense,wet) -- • —••• 0 0 0 25— =:.• 0 0 3 0 0 —25 - <100/NS 55 181.0000 O 0 • -.••. DO 0 • -..•. 0 sp Gray medium-coarse sand with trace silt(medium •• dense,wet) 30— —30 a _ <100/NS 26 Boring completed to a depth of 31.5 feet on 05/22/98 35— —35 0 (NI 40 —40 Note:See Figure A-2 for explanation of symbols n— LOG OF MONITORING WELL Geo • Engineers FIGURE A-6 MONITORING WELL MW-42SHALLOW WELL SCHEMATIC . . . 1 Casing Elevation(ft.): 64.69 -- Vapor ( Casing Siickup(ft.): C DESCRIPTION onc.(ppm) Blow Group Sheen Count Samples Symbol Surface Elevation(ft.): 0--. Steel surface SM Brown silty fine to coarse sand with fine to coarse 0 ----, _ I I monument and gravel and trace organics(medium dense,moist) - concrete _— — _ _ = = . - = ,-. Bentonite seal - — — - -7- -:-- _ L, .. .. .. - 2-inch Schedule 40 5— '''.=:: PVC,solid —5 - •_..• -/NS 23 Ei _ .. __... •: —..• ., _... -—•. - •': =:',: - GM r- • —- Brown silty fine to coarse gravel with fine to coarse 3 CJ C .. _.. sand(very dense,moist) • , 10— c> 0 . c,, :•'•= --10-20 sand backfill • .• 0 —10 , __:.• -/NS 56 Ei . 0 . ( a Approximate water level on 06/24/98 _ 000, .• —• . v . , - •: —:.• 3 C> c :, _:.• 000, - ..._ •. cc _ •__.. 0 0 f 15-1 :' c, ).7.---e-,-. 4-2-inch Schedule 40 —15 .: _ .• C3 C ' —'•.:• PVC 0.020-inch slot _ -. -- -Ns 20 [8] o. o, _ •-.=....f width i- OnOr Becomes gray and wet at 16.0 feet.•___.• V 0 . C;) C e'r Base of well at 17.5 • u_ - --..--...:_-__ -.. ._-•-, 0 0 , z - --, -•m-ii . 0,-) 1 _.•- ----... ).'"7-'" SP Brown fine to medium sand lense _ h- .L--- ...= - °- 20— ------ —Bentonite seal 1 —20 , - :-.•---: -/NS 50/6" NO 0 0 GP o o Brown fme to coarse gravel with fine to coarse sand _ O 0 _ o o - .----.,-,-. —7 -INS 50/5" 181 SP Black fine to coarse sand with fine to coarse gravel L_' _ Boring completed at 23.5 feet on 06/24/98 - 25—, —25 _ - > _ r 30-1 —30 --fa. P. 0 _ 1 - - 1 - 35— —35 i - o N _ a 40— —40 ote:See Figure A-2 for explanation of symbols get LOG OF MONITORING WELL Ge ' ' Engineers ?4‘.. ii FIGURE A-7 . • --- L WELL SCHEMATIC - . MONITORING WELL MW-42DEEP . . . • . - • . - . Casing Elevation(ft.): 63.65 Vapor Casing Stickup(ft.): Conc.(ppm) DESCRIPTION Blow Group - Sheen Count Samples Symbol Surface Elevation(ft.): 0 i II Steel surface SM - 0 - ° .1 monument and - - concrete - -- - — .- . 5- = ._-_----' Bentonite seal - -5 Approximate water level on 06/24/98 - 10- — — 0 - 10 — — . 0/NS Brown silty fine to medium sand with small wood- — —---• - — pieces -15-- = = -- 15 - — — - - — — • - - — — . - — 20- = = 0/NS SM Brown silty coarse sand with fine gravel(wet) -- 20 = _ -- - — —_ . oi - 0/NS ML Gray sandy silt(wet)25- — — -25 — —- _ ,--- ,- — - : 30- = = -30 - — — - _ .- — — - - — — - _ I- - — - Ui _ ! ui 35- = — -35 - — - z - — — - _ = = = - I- — rgi -40 _ _ - - — — ,- - — — — — - _ _ - - — — ' -50 — —, 0/NS .0 -50 — ._.• - — —, , - — - - — — 55- = — ' -55 - — —_ - --7., - — — - . - — — - _ . - — — - 60 = 0/NS = 0 -60 — 65- — — -- 65 - — -- — = ____.-- - = _ -- SM- •"• - — — - - — - 70- = = 0 -70 0/NS Gray silty fine to medium sand(wet) _- — — - - — — - - — — - 75- — — _ -75 r4 -- = = - - - — — .../ . 80-- r— ^ —80 1 . . 7ate:See Figure A-2 for explanation of symbols LOG OF MONITORING WELL Geoorged Engineers 4k\ FIGURE A-8 , . - L_' MONITORING WELL MW-42DEEP . WELL SCHEMATIC • •� • (Continued) . Vapor Cona(ppm) DESCRIPTION Blow Group Sheen Count Samples Symbol 80— _ — 0/NS n' —80 - 85— = —85 - - = = - 90 -r 0/NS ® Gray silty fine to medium sand with cobbles(wet) —90 95-- — —' —- 95 - _ -1 - 100— -F 0/NS ® With no cobbles —- 100 105— = _ —105 110"' _ — 0/NS ® —110 ', w 115— _ _ a _ — — SP —115 _ - _ _ - 0 120— _ = 0/NS ® Gray fine sand with trace silt(dense,wet) —120 125—- = _I —- 125 ._ 130—- _ = 0/NS ® —130 135—- — _ —- 135_ _ 140— — — a = = 0/NS ® _-- 140 U_ - `- 145— = _ —- 145 150— _ _ ® Gray fine to coarse sand with occasional gravel(very -150 - — = dense,wet) - 155— — _ — —- 155 o - = _ — -o —160 Note:See Figure A-2 for explanation of symbols \� LOG OF MONITORING WELL GeoEngineers 4141O FIGURE A-8 MONITORING WELL MW-42DEEP L WELL SCHEMATIC .(Continued) __. I Vapor Conc.(ppm) DESCRIPTION Blow Group Sheen Count Samples Symbol 160— _ eg With occasional cobbles(very dense,wet) —160 165— _ — — - —- 165 170— = _ - — _ ® —170 - 175— _ _ — —- 175 180 = ® Fine to coarse sand with fine to coarse gravel and - 180 = occasional cobbles(very dense,wet) - 185— _ _ _ • _ _ —- 185 190 _ ® Gray fine to coarse sand and occasional gravel(no -- 190 _ _ - cobbles)(very dense,wet) - I- — - W 195— = = —- 195 z - — — - - -- w —- 200 200— _ _ ® p _ — Gray finer-grained fine to medium sand(very dense, _ _ — wet) _ 205—- — — _ — —- 205 210 _ ® Grayfine to coarse sand with —210 — fine to coarse gravel _ _ _ _— (very dense,wet) - 215— _ _ - -215 220— °' - _ _ ® Blackish-gray medium to coarse sand with coarse 7 220 _ _ — gravel(very dense,wet) 225— _ _ —225 _ 230— = _ ® SP-SM Gray fine to medium sand with chunks of silt and —- 230 -- _ — wood(very dense,wet) -, • • ,'^I 235— _ _ • —235 o -- —_ _ _ 240— 7 : . J - -240 Note:See Figure A-2 for explanation of symbols LOG OF MONITORING WELL Geo.\O Engineers FIGURE A-8 MONITORING WELL MW-42DEEP WELL SCHEMATIC (Continued) . Vapor Conc.(ppm) Blow Group DESCRIPTION Sheen Count Samples Symbol 240 _ _ SM Gray fine-silty sand(very dense,wet) `'2• 40 245— _ _ �!` SP-SM Gray fine to medium sand with silt(very dense,wet) —245 _' 250— = _ ® :: -250 255— — — —255 260— _ _ ® SP Gray fine to medium sand with trace of silt(very —- 260 dense,moist) - 265— = _ 265 270 — __ El Gray fine to coarser-grained sand with trace of silt —270 - — _ and gravel(very dense,moist) - I- — -_ LL 275— = _ —- 275 z_ - — — - _ _ _ - 0 280— - — ®� SP Gray fine to medium sand with gravel(very dense, -- 280 - --Sand bacl fill moist) - -- 285— — 2-inch Schedule 80 —- 285 PVC 0.020-inch slot - ' ' _ • well screen 290 _ ® Gray fine to coarse sand with fine gravel(very dense, —290 , = wet) - 295— : — —295 i i - - ' --PVC tailpipe - 300— • ® Gray fine to coarse sand with fine to coarse gravel —300 Drilling initiated on 05/26/98. Soil boring completed _ to a depth of 302 feet bgs on 06/18/98. Well - 305— completed on 06/22/98. —305 310— —- 310 j 1 315— —- 315 o _ - N - O - 1 320— —320 ' Npte:See Figure A-2 for explanation of symbols LOG OF MONITORING WELL Geo�O Engineers FIGURE A-8 i MONITORING WELL MW-43 WELL SCHEMATIC . Casing Elevation(ft.): 65.04 Vapor Casing Stickup(ft.): - Conc.(ppm) Blow GroupDESCRIPTION Sheen Count Samples Symbl Surface Elevation(ft.): 0 . . Steel surface ML Brown silt with occasional fine to medium sand 0 monument and (medium dense,moist) - concrete seal = Bentonite seal - - -2-inch Schedule 40 _ ' PVC;well casing —5 <100/NS 35 N - 2-inch Schedule 40 _ '- -- — :: PVC,0.02-inch slot SP Brown medium to coarse sand with trace of silt and • width occasional gravel(very dense,moist) —10 <100/NS 50/6" ® SZ Approximate water level on 06/24/98 - - _ ° 0 0 Gp Gray gravel with silty fine to coarse sand(medium _ 200/HS 31 CAN,(2 0°o dense,wet) +-10-20 sand backfill SP Gray fine to coarse sand(medium dense,wet) — <100/NS 31 N g— SP Gray medium to coarse sand with trace silt(very —.15 <100/NS 50/6" N dense,wet) •w _ • <100/NS 50/6" N - w • = <100/NS 50/6" W20— .' � <100/NS 35 N:: 1:1: SP-SM Gray fine to medium sand with silt(medium dense, —20 ❑ wet) Boring completed to a depth of 20.0 feet on 05/22/98 25— —25 , • 30— —30 35— —35 0 0 I ,I 40— —40 Note:See Figure A-2 for explanation of symbols LOG OF MONITORING WELL Geo Engineers FIGURE A-9 MONITORING WELL AS-1 -- WELL SCHEMATIC . Casing Elevation(ft.): 64.89 Vapor Casing Stickup(ft.): Conc.(ppm) DESCRIPTION Sheen Count Samples SymbBlow ol Surface Elevation(ft.): 0 II IISteel surface SM Brown silty fine sand(very loose,moist) `0 - _ monument and _ - concrete seal - 1 2 Approximate water level on 06/24/98 - -5 - _ <100/NS 7 10— _ = p C GM Brown silty gravel with fine to coarse sand(medium _10 - 7_-_ <100/NS 29 ®Do,O dense,moist) =- = 1 <100/SS El CJ C GM Gray silty gravel with fine to coarse sand(dense, _ _ o 0 o wet) - - - 600/HS 34 CA®0:0 _ 15— - —Bentonite seal SP Gray fine to medium sand with trace silt and gravel —15 _ -- - <100/NS 15 _ _ - W - _ - u` - z = ( a 20— = j p GM Brown silty gravel with fine to coarse sand(dense, w0 0, o wet) —20 _ — <100/NS 32 ®O 0 G[ - 3CJC - — Y SM Brown silty fine to coarse sand with occasional _ _ 25— ••=2-inch Schedule 40 gravel(very dense,wet) — — —25 _ = PVC,well casing <100/NS 50/6" E _ - _ / ' SP Gray fine to medium sand with trace of silt(very = dense,wet) •Q 30— - - —30 P - _ - <100/NS 50/1" ® _ I = f= <100/NS 39. ❑ - - .•4:-10-20 sand backfdl _ 35— — —35 - :••-4- `: 2-inch Schedule 40 <100/NS 50/6" FA _ - `. —:': PVC,0.02-inch slot width o <100/NS 50/6" Ei 40— -/ -40 Note:See Figure A-2 for explanation of symbols -of EDP LOG OF MONITORING WELL Ge En neers � FIGURE A-10 MONITORING WELL AS-1 • WELL SCHEMATIC (Continued) • • • Vapor Conc.(ppm) Blow Group DESCRIPTION Sheen Count Samples Symbol 40— 40 �• 110/NS 50/6" ®. i SP Gray fine to medium sand with trace of silt(very - •;': dense,wet) - <100/NS 50/4" ® - 45— �• 100/NS 50/6" ® —45 110/NS 38 ® - 50— l —50 <100/NS 40 ® _ Boring completed to a depth of 51.0 feet bgs on 05/22/98 - 55— —55 F- _ w w • • z 2 - - w 60— —60 65— —65 • • 70— —70 75— —75 0 N - _ O_ 80— —80 Note:See Figure A-2 for explanation of symbols LOG OF MONITORING WELL Geo\O Engineers FIGURE A-10 MONITOR WELL NO. 18 WELL SCHEMATIC i .. 2 Casing Elevation: 52.01 o c m Group DESCRIPTION Casing Stickup: -0.29 mU t) Symbol Surface Elevation: 62.30 feet 0 Imr/% STEEL SURFACE SOD LAYER Ij, MONUMENT SM MOTTLED LIGHT AND DARK BROWN SILTY FINE SAND MI SOIL CUTTINGS (LOOSE TO MEDIUM DENSE, MOIST) BENTONITE - ;` SEAL 2-INCH 16 IN UNSLOTTED • '.' SCHEDULE 40 5— — PVC PIPE - - COARSE SAND - BACKFILL f 2-INCHMI - _ SCHEDULE 40 17 SP BROWN FINE TO MEDIUM SAND WITH COARSE SAND AND PVC PIPE FINE GRAVEL (LOOSE TO MEDIUM DENSE, MOIST) 10— ::. ::- 0.020-IH GW- GRAY FINE TO COARSE GRAVEL WITH SILT SAND AND - _ — .:: SLOT WIDT DTH GM COBBLES _ - (PRODUCT ODOR IN SAMPLE) _ (BECOMES WET AT 12. 5 FEET) — p:WATER LEVEL -.:ON 10/19/86 80 IZ 15— L: i- W - ';`•;; ..:::; 18.0 FEET - W BASE OF WELL 56 la LL BORING COMPLETED AT 19. 5 FEET ON 10/16/86 — 20— .- = SAMPLER DRIVEN WITH A 140-POUND HAMMER a W o - - 25— — 30— — 35— — 40-- ote: See FigureA-2 for Explanation of Symbols �(1�u LOG OF MONITOR WELL GeoEngineers f`� Incorporated FIGURE A-20 • MONITOR WELL NO. 19 WELL SCHEMATIC I m Casing Elevation: 82.01 0 0 Group DESCRIPTION Casing Stickup: -0.44 coo co Symbol Surface Elevation:62.45 feet 0 , STEEL SURFACE j SOD LAYER _ III , MONUMENT SM BROWN SILTY FINE TO MEDIUM SAND WITH GRAVEL - I.! SOIL CUTTINGS (LOOSE TO MEDIUM DENSE, MOIST) BENTONITE - - -`SEAL 16 MI:: 2-INCH _ UNSLOTTED SP BROWN FINE TO MEDIUM SAND WITH COARSE SAND AND _ �' SCHEDULE 40 FINE GRAVEL (MEDIUM DENSE, MOIST) PVC PIPE - - §.—•,:. COARSE SAND - _ _ ' BACKFILL ▪ .: 2-INCH 48 S SP BROWNISH-GRAY FINE SAND WITH A TRACE SILT SCHEDULE 40 (MEDIUM DENSE, MOIST) 10—. ' PVC PIPE, GW BROWN FINE TO COARSE GRAVEL WITH SAND AND — "- • 0. 020-INCH . COBBLES (MEDIUM DENSE, MOIST TO WET) ''=•-•-• SLOT WIDTH - E:: ="{r; -RODUCT - ,:<._`":;' INTERFACE ON ML GRAY SANDY SILT AND SILTY FINE SAND WITH GRAVEL ^- 10/19/86 SM AND COBBLES (MEDIUM STIFF, MEDIUM DENSE, WET) -•••: r.::-:: WATER 1 7 II - I•`:••_"=; INTERFACE ON (STRONG PRODUCT ODOR IN SAMPLE) - 16— ••••:,:::, 10/19/86 — W - :' 18.0 FEET 58 III u. - •1 BASE OF WELL Z 20— BORING MET REFUSAL AT 11.0 FEET. BORING RELOCATED 4.5 FEET WEST AND COMPLETED AT 19.5 FEET ON 10/16/86 a - W . O - SAMPLER DRIVEN WITH A 140-POUND HAMMER - -26— • • O - • _ 30— — Cr, 36— J - W - L 1 • j - - 40— — Note: See Figure A-2 for Explanation of Symbols i —�If1ll` LOG OF MONITOR WELL ��/ GeoEnglneers . --,`�� - Incorporated ,�_ FIGURE A-21 MONITOR WELL NO. 20 • WELL SCHEMATIC o Casing Elevation:62.28 0 0 E Group DESCRIPTION Casing Stickup:-0.28 mU coSymbol Surface Elevation:62.54 feet 0 p-,. STEEL SURFACE SOD LAYER - MONUMENT SM LIGHT BROWN SILTY FINE SAND (MEDIUM DENSE, _ ', I SOIL CUTTINGS MOIST) BENTONITE - - ' SEAL ' -INCH 22 • SW- ROWNISH-GRAY FINE TO COARSE SAND WITH GRAVEL F.Y.' UNSLOTTED - 5 .;• SCHEDULE 40 (MEDIUM DENSE, MOIST) PVC PIPE COARSE SAND _ BACKFILL - 2-INCH �' ` SCHEDULE 40 92 ■ - PVC PIPE, 9" - 10— '.;�:_:: 0.020-INCH SLOT WIDTH ''. WATER LEVEL • GW GRAY FINE TO COARSE GRAVEL WITH SAND AND COBBLES - Of- 1 .. ON 10/19/86 (DENSE, WET) 61 ® - (STRONG PRODUCT ODOR IN SAMPLE) - 15— I- ?<: SM GRAY SILTY FINE SAND (DENSE, WET) W - := ...:':�'' 18.0 FEET 0 - •: ;:: BASE OF WELL = 20— "''`'` "`" BORING COMPLETED AT 19. 5 FEET ON 10/15/86 — ' 1 - a - SAMPLER DRIVEN WITH A 140-POUND HAMMER LU I 0 I I _ 26— — N - . I _ - .2- _ cr. W 30— Ip N N _ . O 35— — J _, w z _ - p - - = 4 0-- — Note: See Figure A-2for Explanation of Symbols LOG OF MONITOR WELL *� G eoEngineers � Incorporated �� FIGURE A-22 \ • , I / i , i f-\ I r " I ! C` r ;. / I - \. i1. ' _ I /( ) ; • 7 Y j\ / / J'r, i\ / / 1 / i \. \ //" 1 ;\ '` / , I t 1 ,- 1 , i , , 1 I L �' 1 \} ( - I I l J \ \ l \ J , % r t, , / �� _1 / I 1 t J \ . \ ,1 \ \ I ` , . % ', f N \I ,, I J' ' r- '. .\ \ , / - ' \ ( / \ , /\ \I, { � (� k i ,,, , • \ 1 `• l T -r ) - ;,'+ / F Ii V ( ( C 1 / \ +. / , ' • / • / \ / F ( L. l ( { 1' / 1 /t \ \I' )' ' APPENDIX g ` 1/\((f • ) \: ,, \ ) Ij•\ / 1 J`p i C N ••i 1 I\ ' l ' /, ., \`' / �-\ ( ' \ i (? i n �• \ ./) ,) , ' i 'L' l I 1 I 'l r I ,' I' ` \ - '` )/., \,' 1 I r , \ r, / X )+ )I \.\ /J r. — ( 1.1 , 1 l ( r1 / \ Iy % '\" I \j . -,,,,, :' 1 ..\ \ .'2. 1 'i • / ) 2 ( \ 1, \ \ r`j, \ / 1 1 ,' /,' / l , ) \ I I \ ' ' r- - / ( - \ ,' _,, • �1 \ \ /, • y\" \, \ f \ / i \ . \ \ ' /\ \ s( \ l I\ / r 1 _ r / i. 1 \ 1 a 7 ,' = 1 I ( • I\ \ ; I / , I. \ ' /( (b ( y I./1 )• r ) lt^ I / � f, ( / , i I • ) i �\ fi, r, ,: i \ \ C / J \ • \1 / / y ' —x' H I 1 1 ' 1 ) \1 � `' I' \ I / t_ \ ; ' \ � t( (f a I I 1�Y/ \ I - — , i I APPENDIX B CHEMICAL ANALYTICAL PROGRAM ANALYTICAL METHODS Chain-of-custody procedures were followed during the transport of the field samples to the analytical laboratory. The samples were held in cold storage pending extraction and/or analysis. The analytical results, analytical methods reference and laboratory quality control (QC) records are included in this appendix. The analytical results are also summarized in the text and tables of this report. ANALYTICAL DATA REVIEW The laboratory maintains an internal quality assurance program as documented in its laboratory quality assurance manual. The laboratory uses a combination of blanks, surrogate recoveries, duplicates, matrix spike recoveries, matrix spike duplicate recoveries, blank spike recoveries and blank spike duplicate recoveries to evaluate the validity of the analytical results. The laboratory also uses data quality goals for individual chemicals or groups of chemicals based n the long-term performance of the test methods. The data quality goals were included in the laboratory reports. The laboratory compared each group of samples with the existing data quality lgoals and noted any exceptions in the laboratory report. The laboratory QC and data quality lexceptions documented by the laboratory were reviewed by GeoEngineers using the applicable ata validation guidelines from the following documents: "Laboratory Data Validation Functional Guidelines for Evaluating Inorganic Analyses" dated July 1988 (EPA document number EPA540/R94/083) and "USEPA Contract Laboratory Program National Functional (Guidelines for Organic Data Review" dated February 1994 (EPA document number EPA540/R94/012). ANALYTICAL DATA REVIEW SUMMARY No data quality exceptions were noted in the laboratory report or during our review. Based on our data quality review, it is our opinion that the analytical data are of acceptable quality for their intended use. II GeoEngineers B-1 File No. 0894-002-00/081198 NORTH • • �,' REEK v. BOTHELL ■ (425)481-9200 ■ FAX 485-2992 - • ANALYTICAL SPOKANE ■ (509)924-9200 ■ FAX 924-9290 Environmental Laboratory Services PORTLAND • (503)906-9200 • FAX 906-9210 . Geo Engineers-Redmond • Project: OPLC-MAPLEWOOD Sampled: 5/5/98 8410 154th Ave NE Project Number: 0894-002-00 Received: 5/6/98 Redmond,WA 98052 Project Manager: Paul Craig Reported: 5/13/98 12:55 • ANALYTICAL REPORT FOR SAMPLES: i Sample Description Laboratory Sample Number Sample Matrix • Date Sampled MW-38-12.5 B805108-00 Soil 5/5/98 - MW-39-15.0 B805108-01 Soil 5/5/98 • MW-40-17.5 B805108-02 Soil 5/5/98 A ' • g1neetS G eoEn 5 19�$ I • (/) **''''''' • North Creek Analytical,Inc. The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. Joy B Ch g, rojt c ana er 18939 120th Avenue N.EBSuite 01,Bothell,WA 98011-9508 Page 1 of 7 East 11115 Montgomery,Suite B;Spokane,WA 99206-4776 ann6 C 1A/ Mimh,,r p..nn n nn,,nrinn rip 07f1no.7il'f • - 4_ NORTH imr: 4. 4; CREEK �� BOTHELL • (425)481-9200 • FAX 485-2992` Al ANALYTICAL SPOKANE ■ (509)924-9200 • FAX 924-9290 INIIII Environmental Laboratory Services PORTLAND • (503)906-9200 • FAX 906-9210 y � Geo Engineers-Redmond Project: OPLC-MAPLEWOOD Sampled: 5/5/98 8410 154th Ave NE Project Number: 0894-002-00 Received: 5/6/98 Redmond,WA 98052 Project Manager: Paul Craig Reported: 5/13/98 12:55 Gasoline Hydrocarbons(Toluene to Dodecane)and BTEX by NWTPH-Gx and EPA 8021B North Creek Analytical-Bothell _ Batch Date Date Surrogate Reporting Analyte Number Prepared Analyzed Limits Limit Result Units Notes* lJ li I MW-38-12.5 B805108-00 Soil Benzene 0580318 5/11/98 5/11/98 0.0500 ND mg/kg dry Toluene 0.0500 ND " Ethylbenzene n " II 0.0500 ND " Xylenes(total) • 0.100 ND " Aviation Gasoline Range Hydrocarbons " II II 5.00 ND " Gasoline Range Hydrocarbons " " II 5.00 ND " VM&P Naphtha Range Hydrocarbons " " II 5.00 ND " 0 Mineral Spirits Range Hydrocarbons " " 5.00 ND , Dx'Range Hydrocarbons[>C12] II II " 5.00 ND " _- Surrogate: 4-BFB(FID) II II II 50.0-150 96.9 % Surrogate: 4-BFB(PID) II II II 50.0-150 98.0 " MW-39-15.0 B805108-01 Soil Benzene 0580318 5/11/98 5/11/98 0.0500 ND mg/kg dry Toluene 0.0500 ND " Ethylbenzene II II " 0.0500 ND ar', Xylenes(total) " II " 0.100 ND " Aviation Gasoline Range Hydrocarbons " " " 5.00 ND " Gasoline Range Hydrocarbons 5.00 ND " VM&P Naphtha Range Hydrocarbons " 5.00 ND a Mineral Spirits Range Hydrocarbons 5.00 ND " Dx Range Hydrocarbons[>C12] " si5.00 ND " Surrogate: 4-BFB(FID) " " " 50.0-150 94.0 % Surrogate: 4-BFB(PID) 50.0-150 •96.7 I MW-40-17.5 B805108-02 Soil - Benzene 0580318 5/11/98 5/11/98 0.0500 ND mg/kg dry Toluene " " 0.0500 ND - Ethylbenzene It " " 0.0500 ND " Xylenes(total) II II " 0.100 ND Aviation Gasoline Range Hydrocarbons , " " 5.00 ND Gasoline Range Hydrocarbons II II 5.00 ND " VM&P Naphtha Range Hydrocarbons 5.00 ND " Mineral Spirits Range Hydrocarbons " " II 5.00 ND " Dx Range Hydrocarbons[>C12] " II 5.00 ND " Surrogate: 4-BFB(FID) 50.0-150 102 % _ Surrogate: 4-BFB(PID) " II 50.0-150 97.9 North Creek Analytical,Inc. *Refer to end of report for text of notes and definitions] I B - 3 -, Joy B Chan , r 'ea anager - 18939 120th Avenue N.E.,Suite 101,Bothell,WA 98011-9508 Page 2 of East 11115 Montgomery,Suite B.Spokane,WA 99206-4776 -. near c%Ai hlin,h,,r A..,,...... o-....•..•.... IUD n"nno ^n .. ' -;'.' NORTH 1 ' •,�•- :. CREEK BOTH ELL •,(425 481-9200 • FAX 485-2992 SP- 0 r ANALYTICAL PORDTLAND • (509)KANE • 503 906-9200 ■ FAX 906-9210 Environmental Laboratory Services Geo Engineers-Redmond Project: OPLC-MAPLEWOOD Sampled: 5/5/98 8410 154th Ave NE Project Number: 0894-002-00 Received: 5/6/98 r=--, Redmond,WA 98052 Project Manager: Paul Craig Reported: 5/13/98 12:55 Diesel Hydrocarbons(C12-C24)and Heavy Oil(C24-C40)by NWTPH-Dx(w/o Acid/Silica Gel) North Creek Analytical-Bothell — Batch Date Date Surrogate Reporting • Analyte Number Prepared Analyzed Limits Limit Result Units Notes* it , MW-38-12.5 B805108-00 Soil • Gx Range Hydrocarbons[<C10] 0580339 5/11/98 5/12/98 10.0 ND , mg/kg dry Kerosene Range Hydrocarbons n 44 n10.0 ND " ' Diesel Range Hydrocarbons II II II 10.0 ND " Insulating Oil Range Hydrocarbons " II II 25.0 ND " Heavy Fuel Oil Ra}ge Hydrocarbons " 44 n25.0 ND " I a, Lube Oil Range H}ldrocarbons 25.0 ND " ' Surrogate: 2-FBP 50.0-150 103 % MW-39-15.0 B805108-01 Soil Gx Range Hydrocarbons[<C10] Kerosene Range Hydrocarbons 0580339 5/11/98 5/12/98 10.0 ND mg/kg dry 44 10.0 ND " ' Diesel Range Hydrocarbons 44 44 4410.0 ND " � Insulating Oil Range Hydrocarbons II II II 25.0 ND " Heavy Fuel Oil Range Hydrocarbons " 25.0 ND " Lube Oil Range Hydrocarbons II II II 25,0 ND " i� Surrogate: 2-FBP II II II 50.0-150 116 % i , 1 - MW-40-17.5 B805108-02 Soil Gx Range Hydrocarbons[<C10] 0580339 5/11/98 5/12/98 10.0 ND mg/kg dry • Kerosene Range Hydrocarbons II II 10.0 ND " Diesel Range Hyd iocarbons 10.0 ND " Insulating Oil Range Hydrocarbons 44 44 4425.0 ND " 1 Heavy Fuel Oil Range Hydrocarbons " II II 25.0 ND " ! I Lube Oil Range Hydrocarbons II II 25.0 ND " . Surrogate: 2-FBP II II II 50.0-150 92.1 % i I North Creek Analytical,Inc. *Refer to end of report for text of notes and definitions. • Joy B Ch. 'roje Manago 18939 120th Avenue N.EBSuite 101,Bothell,WA 98011-9508 Page 3 of 7 ' East 11115 Montgomery,Suite B,Spokane,WA 99206-4776 aenF CIA/ pnmhnc n,,nn,,,. 4 n,,nrInn no a7Mo_719q -. ' --_ NORTH ilif • :. 4; CREEK \• ANALYTICAL BOTHELL • (425)481-9200 • FAX 485-2992 SPOKANE • (509)924-9200 • FAX 924-9290 - Environmental Laboratory Services PORTLAND • (503)906-9200 • FAX 906-9210 Geo Engineers-Redmond Project: OPLC-MAPLEWOOD Sampled: 5/5/98 , 8410 154th Ave NE Project Number: 0894-002-00 Received: 5/6/98 • Redmond,WA 98052 Project Manager: Paul Craig Reported: 5/13/98 12:55 ` Dry Weight Determination North Creek Analytical-Bothell Sample Name Lab ID Matrix Result Units MW-38-12.5 B805108-00 Soil 89.8 % MW-39-15.0 B805108-01 Soil 93.1 % MW-40-17.5 B805108-02 Soil 93.9 % 111 North Creek Analytical,Inc. Y � I Joy B Ch ,: 1 • Manage. B — 5 Page 4 of 7 18939120th Avenue N.E.,Suite 101,Bothell,WA 98011-9508 East 11115 Montgomery,Suite B,Spokane,WA 99206-4776 DAnc C 1A/ hlimhnc Ann„n o,,,,.,...,,.. no o7nna_7119 .'_. . .. - - NORTH .`j - 4i CREEK ' , ANALYTICAL BOTHELL • (425)481-9200 • FAX 485-2992 SPOKANE ■ (509)924-9200 • FAX 924-9290 Environmental Laboratory Services PO503 RTLAND • ( )906-9200 • FAX 906-9210 Geo Engineers-Redmond Project: OPLC-MAPLEWOOD Sampled: 5/5/98 I8410 154th Ave NE Project Number: 0894-002-00 Received: 5/6/98 - Redmond,WA 98052 Project Manager: Paul Craig Reported: 5/13/98 12:55 1 . ... .Gasoline Hydrocarbons(Toluene to Dodecane)and BTEX by NWTPH-Gx and EPA 8021B/Quality Control ' "- Mirth.Creek Analytical-Bothell ,:_'' „ Date Spike Sample QC Reporting Limit Recov. RPD RPD lAnalyte Analyzed - Level Result Result Units Recov.Limits % Limit.- % Notes* -v ,Batch: 0580318 Date Prepared:_5/11/98 Extraction Method: EPA 5030B(MeOH) - Blank 0580318-BLKI -_Benzene 5/11/98 ND mg/kg dry • 0.0500 Toluene II ND " 0.0500 !Ethylbenzene " ND " 0.0500 Xylenes(total) t. ND 0.100 Aviation Gasoline Range Hydrocarbons " ND " 5.00 Gasoline Range Hydrocarbons ND " 5.00 VM&P Naphtha Range Hydrocarbons " ND 5.00 ,- ,Mineral Spirits Range Hydrocarbons " - ND " L-5.00 ' Dx Range Hydrocarbons[>C 12] ND " 5.00 Surrogate: 4-BFB(FID) II 4.00 4.45 " 50.0-150 111 ,- ll Surrogate: 4-BFB(PID) II 4.00 4.12 " 50.0-150 103 LCS 0580318-BS1 Gasoline Range Hydrocarbons 5/11/98 25.0 27.4 mg/kg dry 70.0-130 110 ~,;Surrogate: 4-BFB(FID) II 4.00 4.64 " 50.0-150 116 Duplicate 0580318-DUP1 B805071-01 Aviation Gasoline Range Hydrocarbons 5/11/98 ND ND mg/kg dry 50.0 [Gasoline Range Hydrocarbons II 945 791 " 50.0 17.7 ,_'VM&P Naphtha Range Hydrocarbons ND ND " 50.0 Mineral Spirits Range Hydrocarbons ND ND " 50.0 ;,Dx Range Hydrocarbons[>C12] ND ND 50.0 ,1 ,Surrogate: 4-BFB(FID) II 5.47 8.50 " 50.0-150 155 1 Matrix Spike 0580318-MS1 B805071-02 i Benzene 5/11/98 0.715 ND 0.640 mg/kg dry 60.0-140 89.5 Toluene 0.715 ND 0.636 " 60.0-140 89.0 Ethylbenzene 0.715 ND 0.627 60.0-140 87.7 Xy[enes(total) " 2.14 ND 1.91 " 60.0-140 89.3 Surrogate: 4-BFB(P1D) II 5.72 5.47 " 50.0-150 95.6 . ' Matrix Spike Dup 0580318-MSDI B805071-02 Benzene 5/11/98 0.715 ND 0.669 mg/kg dry 60.0-140 93.6 20.0 4.48 - Toluene 0.715 ND 0.659 60.0-140 92.2 20.0 3.53 Ethylbenzene " 0.715 ND 0.646 " 60.0-140 90.3 20.0 2.92 'Xylenes(total) 2.14 ND 1.96 60.0-140 91.6 20.0 2.54 Surrogate: 4-BFB(PID) II 5.72 5.36 50.0-150 93.7 - North Creek Analytical,Inc. *Refer to end of report for text of notes and definitions. i Joy B Chan ,P ject ager 18939120th Avenue N.E.,,Suite 101,Bothell,WA 98011-9508 Page 5 of 7 East 11115 Montgomery,Suite B,Spokane,WA 99206-4776 nnnc,0 IA/ Nimh„, A.,,,,:.. n.-•...,..,,..• no 07nna_71ofl I _'_q_ NORTH A .y•\ i CREEK `� T Ai ANALYTICAL SPOKANE ■ (509)924-9200 • FAX 924-9290 Environmental laboratory Services PORTLAND • (503)906-9200 ■ FAX 906-9210 Geo Engineers-Redmond Project: OPLC-MAPLEWOOD Sampled: 5/5/98 i, 8410 154th Ave NE Project Number: 0894-002-00 Received: 5/6/98 I Redmond,WA 98052 Project Manager: Paul Craig Reported: 5/13/98 12:55 '1 ;:';:Diesel Hydrocarbons(C12-C24)IOW,.Heavy Oil(C24-C40):by NWTPH-Dz.{vr/o Acid/Silica Gel)/Quality Control ... North Creke Analytical Bothell Date Spike Sample QC Reporting Limit Recov. RPD RPD _ 1..4 Analyte Analyzed Level Result Result Units Recov.Limits % Limit % Notes* Batch: 0580339 Date Prepared: 5/11/98 Extraction Method: EPA 3550B Blank 0580339-BLK1 Gx Range Hydrocarbons[<C10] 5/11/98 ND mg/kg dry 10.0 Kerosene Range Hydrocarbons ND 10.0 Diesel Range Hydrocarbons nND 10.0 Insulating Oil Range Hydrocarbons II ND 25.0 _ Heavy Fuel Oil Range Hydrocarbons " ND " 25.0 Lube Oil Range Hydrocarbons II ND ' " 25.0 V,, Surrogate: 2-FBP 10.7 9.66 " 50.0-150 90.3 LCS 0580339-BS1 Diesel Range Hydrocarbons 5/11/98 66.7 62.6 mg/kg dry 50.0-150 93.9 Surrogate: 2-FBP 10.7 10.7 " 50.0-150 100 I Duplicate 0580339-DUP1 B805174-00 __ Gx Range Hydrocarbons[<C10] 5/12/98 ND ND mg/kg dry 50.0 Kerosene Range Hydrocarbons II 206 492 50.0 81.9 Diesel Range Hydrocarbons ND ND 50.0 Insulating Oil Range Hydrocarbons " ND ND " 50.0 Heavy Fuel Oil Range Hydrocarbons " • ND ND 50.0 Lube Oil Range Hydrocarbons ND ND 50.0 Surrogate: 2-FBP II 14.8 17.2 " 50.0-150 116 I I Hi : North Creek Analytical,Inc. *Refer to end of report for text of notes and definitions Joy B Ch , ojec anager . 18939120th Avenue N.BSuite 101,Bothell,WA 98011-9508 Page 6 of East 11115 Montgomery,Suite B,Spokane,WA 99206-4776 oinc c W Nimhnc Avnnnn nn n,n,tnn nr,07MA-7149 . 474 NORTH ; CREEK BOTH ELL • (425)481-9200 • FAX 485-2992 • ANALYTICAL SPOKANE • (509)924-9200 • FAX 924-9290 Environmental Laboratory Services PORTLAND • (503)906-9200 • FAX 906-9210 Geo Engineers-Redmond Project: OPLC-MAPLEWOOD Sampled: 5/5/98 118410 154th Ave NE Project Number: 0894-002-00 Received: 5/6/98 Redmond,WA 98052 Project Manager: Paul Craig Reported: 5/13/98 12:55 I Notes and Definitions • 11# Note • 1 The surrogate recovery for this sample cannot be accurately quantified due to interference from coeluting organic compounds present in the sample. The RPD value for this QC sample is above the established control limit.Review of associated QC indicates the high RPD ( does not represent an out-of-control condition for the batch. DET Analyte DETECTED ND Analyte NOT DETECTED at-or above the reporting limit NR Not Reported , dry Sample esults reported on a dry weight basis Recov. Recovery RPD Relative Percent Difference - 1 - ii • • • -r1 North Creek Analytical,Inc. a � , �^1 B — 8 Joy B Chan ,Pr 'ec ana • 18939 120th Avenue N.E.,Suite 101,Bothell,WA 98011-9508 Page 7 of 7 East 11115 Montgomery,Suite B,Spokane,WA 99206-4776 Ong C VII Mimhnc Avonnn Pno,,nr-1 f1R Q7nnR-71g9 CHAIN OF CUSTODY RECORD 6 U b 5 ( 6 0 GEOENGINEERS, INC. DATE -6--4 k 8410 154TH AVENUE N.E. o PAGE / OF / REDMOND, WASHINGTON 98052 GeovOEngineers LAB N //4 (206) 861-6000 LAB NO. • PROJECT NAME/LOCATION Q�L C ANALYSIS REQUIRED NOTES/COMMENTS PROJECT NUMBER . 68 42/-60 z-0 N k (Preserved,filtered,etc.) PROJECT MANAGER P,SZGI L C t-476 — SAMPLED BY • ee,7— L;d,E/Z0/CK 5,D (it/ 'SAMPLE IDENTIFICATION SAMPLE COLLECTION #OF 3 l LAB GEOENGINEERS DATE TIME MATRIX JARS tG/-3 k -l2,S 6:s--15/ o4:?3o l 5( XC 13gOs/C5-O I rnctl-39 - Pc,o .3•55f' 15cso .5 ( X x 02_ rnw• /O- /7.S' ..s ti ) ►v o 5 1 x x - d3 tel • REUNQUISHED BY FIRM , E� RELINQUISHED BY FIRM REUNQUISHED BY FIRM SIGNATURae0-7 oc.e.41 SIGNATURE SIGNATURE . PRINTED NAME 6, , C"pua-ie_Dtc.t- PRINTED NAME PRINTED NAME DATE ,,, ----(e I k • TIME /6/0 DATE TIME DATE TIME RECEIVED BY FIRM /I(,Srti RECEIVED BY FIRM RECEIVED BY FIRM • SIGNATURE ,A.--- +� SIGNATURE SIGNATURE PRINTED NA a K_e-t PRINTED NAME PRINTED NAME DATE 5�O(C(� TIME f�✓' 3 5- DATE 111417,/ DATE TIME ADDmONAL COMMENTS,,EX rg.,4 7- 4 LO -36 - Ig,5- -TNT-- 7-PH & ..ilL f$7S, 6a T hcZ- ) . Zen) 77z- ,2r�.srtL t-s of h'Bo ' t ps/Es arz�^ / tJ. NORTH rums 4' CREEK BOTHELL • (425)420-9200 • FAX 420-9210 ANALYTICAL A SPOKANE ■ (509)924-9200 • FAX 924-9290 (Environmental Laboratory Services PORTLAND • (503)906-9200 • FAX 906-9210 IL _IGeo Engineers-Redmond Project: OPLC-MAPLEWOOD Sampled: 5/22/98 18410 154th Ave NE Project Number: 0894-002-00 Received: 5/26/98 Redmond,WA 98052 Project Manager: Dana Carlisle Reported: 6/4/98 10:16 ANALYTICAL REPORT FOR SAMPLES: __ Sample Description Laboratory Sample Number Sample Matrix • Date Sampled MW-41-15.5 B805531-00 Soil 5/22/98 AS-1-13.5 B805531-01 Soil 5/22/98 MW-43-12 B805531-02 Soil 5/22/98 e • L ' • hl _ I 1 ' North Creek Analytical,Inc. The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. B — 10 Page 1 of 15 Joy B C 'roje;M.'ger 18939120th Avenue N.E.,Suite 101,Bothell,WA 98011-9508 East 11115 Montgomery,Suite B.Spokane,WA 99206-4776 nAnG c(At no nlnno 7.0n NORTH • ,, Pi CREEK . :. " ' % ANALYTICAL SPOKANE • (509)924-9200 • FAX 924-9290 Environmental Laboratory Services PORTLAND • (503)906-9200 • FAX 906-9210 North Creek Analytical • CASE NARRATIVE FOR SEMI-VOLATILE HYDROCARBON ANALYSIS • Client: GEO ENGINEERS GeoEngineers Project ID: OPLC-Maplewood Project No: 08 94-002-00 U ' O Laboratory Work Order: B805531 1998 Summary Routing......g...... ..........................� El ......................................... Three soil samples (B805531-00, 01 and 02) were analyzed for semi-volatile range hydrocarbons by WTPH-D . B805531-01 and 02 were also analyzed by MTCA-EPH. -• Sample Preparation Samples were extracted in accordance with EPA 3550B prior to analysis by both WTPH-D and MTCA-EPH. Analysis Samples were analyzed in accordance with WTPH-D and MTCA-EPH. The WTPH-D result for B805531-01 was 67 mg/kg, while the MTCA-EPH result was 1590 mg/kg. This discrepancy was due to a non-homogenous sample matrix. To support this conclusion the sample was re-extracted and re-analyzed in duplicate. The results of this re-analysis were 639 and 556 mg/kg. These results combined with visual examination of the matrix supports the above conclusion. Quality Assurance - All the batch QC was within acceptance criteria or qualified. "I certify that this data package is in compliance with the Contract both technically and for completeness, for other than the conditions detailed above. Release of the data contained in this hard copy data package has • been authorized by the Laboratory Director or his designee, as verified by the following signature" qq Isg Joy B. ang, Projp Manager Date Stephen C. Kouri, Q.A. Manager' Date B — 11 06/09/98 18939 120th Avenue N.E.,Suite 101,Bothell,WA 98011-9508 East 11115 Montgomery,Suite B,Spokane.WA 99206-4776 nnc n w - n..__.._ n__ nn n-nnn-..nn i i_ 1 =,..q_ NORTH 7 - �-I CREEK ? • I ANALYTICAL BOTHELL • (425)420-9200 • FAX 420-9210 SPOKANE • (509)924-9200 • FAX 924-9290 Environmental Laboratory Services PORTLAND • (503)906-9200 • FAX 906-9210 'Geo Engineers-Redmond Project: OPLC-MAPLEWOOD Sampled: 5/22/98 18410 154th Ave NE Project Number: 0894-002-00 Received: 5/26/98 • - Redmond,WA 98052 Project Manager: Dana Carlisle Reported: 6/4/98 10:16 , Gasoline Hydrocarbons(Toluene to Dodecane)and BTEX by WTPH-G and EPA 8021B North Creek Analytical-Bothell __ Batch Date Date Surrogate Reporting Analyte • Number Prepared Analyzed Limits Limit Result Units Notes*. MW-41-15.5 $805531-00 • Soil - Gasoline Range Hydrocarbons 0580818 5/27/98 5/29/98 5.00 ND mg/kg dry Benzene 0.0500 ND " Toluene " II 0.0500 ND " - Ethylbenzene II II II 0.0500 ND " Xylenes(total) n I. n 0.100 ND " 'Surrogate: 4-BFB(FID) " II II 50.0-150 79.6 'Surrogate: 4-BFB(ND) II II II 50.0-150 81.3 " ` ',AS-1-13.5 )3805531-01 Soil i Gasoline Range Hydrocarbons 0580818 5/27/98 5/29/98 100 1290 mg/kg dry 6 Benzene 2.00 ND 1 ' Toluene1 n n n 2.00 ND 1 Ethylbenzene i " n n2.00 ND 1 Xylenes(total) " " n 5.00 ND " , 1 Surrogate: 4-BFB(FID) II II II 50.0-150 NR % 2 Surrogate: 4-BFB(PID) II II " 50.0-150 185 " 2 • )V1W-43-12 )3805531-02 5A Gasoline Range Hydrocarbons 0580818 5/27/98 5/29/98 5.00 387 mg/kg dry 6 Benzene n " 0.100 ND 1 '---1 Toluene n II II 0.100 ND 1 ` Ethylbenzene 0.200 ND " 1 Xylenes(total) 0.750 ND 1 Surrogate: 4-BFB(FID) 50.0-150 131 Surrogate: 4-BFB(YID) II II II 50.0-150 - 107 " r • North Creek Analytical,Inc. *Refer to end of report for text of notes and definitions. B — 12 , Joy B Ch oje Manag 18939 120th Avenue N.E.,Suite 101,Bothell,WA 98011-9508 Page 2 of 15 East 11115 Montgomery,Suite B,Spokane,WA 99206-4776 • a :=c4_ NORTH , CREEK ~?` ANALYTICAL SBOTHELL POKANE • (425)420-9200 • FAX 420-9210 A • (509)924-9200 • FAX 924-9290 Environmental Laboratory Services PORTLAND • (503)906-9200 • FAX 906-9210 -, 1 Geo Engineers-Redmond Project: OPLC-MAPLEWOOD Sampled: 5/22/98 8410 154th Ave NE . Project Number: 0894-002-00 Received: 5/26/98 _ I Redmond,WA 98052 Project Manager: Dana Carlisle Reported: 6/4/98 10:16 i Volatile Petroleum Hydrocarbons by WDOE Interim TPH Policy Method North Creek Analytical-Bothell Batch Date Date Surrogate Reporting - Analyte Number Prepared Analyzed Limits Limit Result Units Notes* I- AS-1-13.5 B805531-01 Soil C5-C6 Aliphatics 0580818 5/27/98 5/29/98 100 ND mg/kg dry C6-C8 Aliphatics n100 112 C8-C10 Aliphatics n n n 100 114 " C10-C12 Aliphatics " II II 100 240 " C8-C10 Aromatics II It " 100 ND " C10-C12 Aromatics n n n 100 187 " C12-C13 Aromatics " " 100 161 - Surrogate: 4-BFB(FID) 60.0-140 NR % 2 Surrogate: 4-BFB(PID) II II II 60.0-140 146 " 2 . J4W-43-12 )3805531-02 S911 C5-C6 Aliphatics 0580818 5/27/98 5/29/98 5.00 ND mg/kg dry C6-C8 Aliphatics " II II 5.00 8.88 C8-C10 Aliphatics n n n 5.00 29.8 " C10-C12 Aliphatics n n n 5.00 72.3 " C8-C10 Aromatics n n n5.00 20.1 " C10-C12 Aromatics " n n5.00 51.3 " C12-C13 Aromatics " " II 5.00 53.3 " Surrogate: 4-BFB(FID) 60.0-140 131 % Surrogate: 4-BFB(PID) 60.0-140 88.3 " . I North Creek Analytical,Inc. *Refer to end of report for text of notes and definitions. B — 13 , Joy B Chan ject anag 18939 120th Avenue N.E.,Suite 101,Bothell,WA 98011-9508 Page 3 of 15„ East 11115�Montgomery,Suite B.Spokane,WA 99206-4776 - .q_ NORTH :AT CREEK ' 'V , ANALYTI CAL BOTHELL • (425)420-9200 • FAX 420-9210 A SPOKANE.■ (509)924-9200 • FAX 924-9290 Environmental Laboratory Services PORTLAND • (503)906-9200 • FAX 906-9210 Geo Engineers-Redmond Project: OPLC-MAPLEWOOD Sampled: 5/22/98 8410 154th Ave NEi Project Number; 0894-002-00 Received: 5/26/98 - Redmond,WA 98052, Project Manager: Dana Carlisle Reported: 6/4/98 10:16 , BTEX,MTBE and Naphthalene by WDOE Interim TPH Policy Method using GC/MS North Creek Analytical-Bothell {v Batch Date • Date Surrogate Reporting • Analyte Number Prepared Analyzed Limits Limit Result Units Notes* AS-1-13.5 )3805531-01 Soil - Methyl tert-butyl ether 0580918 5/29/98 6/3/98 1.00 ND mg/kg dry , - Benzene " II 0.100 ND " Toluene II II II 0.100 ND " :i.,a Ethylbenzene II " 0.100 ND " m,p-Xylene II II II 0.400 ND " ' o-Xylene I „ 0.100 ND Naphthalene 0.100 ND Surrogate: 2-Bromopropene 70.0-130 89.6 % Surrogate: 1,2-DCA-d4 II II II 70.0-130 87.1 " Surrogate: Toluene)d8 II II II 70.0-130 92.1 " .-- Surrogate: 4-BFB II Il II 70.0-130 87.4 " i- MW-43-12 )3805531-02 ; Methyl tert-butyl ether 0580918 5/29/98 6/3/98 1.00 ND mg/kg dry Benzene " , II II 0.100 ND " - Toluene II II II 0.100 ND " Ethylbenzene " n n0.100 ND " - m,p-Xylene II " II 0.400 ND " ti o-Xylene II " II 0.100 ND " Naphthalene j II " II 0.100 ND " _ Surrogate: 2-Bromopropene 70.0-130 90.9 % Surrogate: 1,2-DCA-d4 II II II 70.0-130 91.2 " `, Surrogate: Toluene-d8 II " II 70.0-130 97.1 " Surrogate: 4-BFB II II II 70.0-130 90.5 " I ' l'i 1~ i i North Creek Analytical,Inc. *Refer to end of report for text of notes and definitions. i ; B — 14 4 Joy B Chang r 'ect age (------ • 18939 120th Avenue N.E..Suite 101,Bothell,WA 98011-9508 Page 4 of 15 ,_ East 11115 Montgomery,Suite B,Spokane,WA 99206-4776 ' 1 cm;c IAI plimhnc Moan,in Anwar-Inn no 07nns3_71P) -- '.,.-i-.::: -' NORTH 4" .. '`1%-Iii CREEK • (425)420-9200 • FAX 92 -9210`+ ', , ANALYTICAL SPOKANE • (509)924-9200 • FAX 924-9290 Environmental Laboratory Services PORTLAND • (503)906-9200 • FAX 906-9210 Geo Engineers-Redmond Project: OPLC-MAPLEWOOD Sampled: 5/22/98 ' 8410 154th Ave NE Project Number: 0894-002-00 Received: 5/26/98 Redmond,WA 98052 Project Manager: Dana Carlisle Reported: 6/4/98 10:16 Diesel Hydrocarbons(C12-C24)by WTPH-D North Creek Analytical-Bothell Batch Date Date Surrogate Reporting Analyte Number Prepared Analyzed Limits Limit Result Units Notes* JV1W-41-15.5 B805531-00 Soil Diesel Range Hydrocarbons 0580825 5/27/98 5/28/98 10:0 ND mg/kg dry Surrogate: 2-FBP II II II 50.0-150 13.8 % - Diesel Range Hydrocarbons 0580943 5/29/98 5/29/98 10.0 ND mg/kg dry 1 Surrogate: 2-FBP II II II 50.0-150 92.4 % —+ AS-1-13.5 )3805531-01 591 Diesel Range Hydrocarbons 0580825 5/27/98 5/27/98 • 10.0 67.3 mg/kg dry 7 Surrogate: 2-FBP II II II 50.0-150 96.6 % J 1W-43-12 )3805531-02 54ii u , Diesel Range Hydrocarbons 0580825 5/27/98 5/27/98 10.0 1240 mg/kg dry Surrogate: Octacosane 50.0-150 86.1 % 3 • • North Creek Analytical,Inc. *Refer to end of report for text of notes and definitions.; • B — 15 Joy B Ch ,Prpject anag 18939 120th Avenue N.E.,Suite 101.Bothell,WA 98011-9508 Page 5 of 15 East 11115 Montgomery,Suite B,Spokane,WA 99206-4776 clans g W Nimhnc A1Iaf1110 Raavartnn !1R o7nnP-7119 I NORTH , .- P111 CREEK 1, 1 `+ `,. A ANALYTICAL BOTHELL •• (425)420-9200 • FAX 420-9210 SPKANE Environmental Laboratory Services PORTLAND • (503)906-9200 • FAX 906-9210 l 1 'Geo Engineers-Redmond Project: OPLC-MAPLEWOOD Sampled: 5/22/98 8410 154th Ave NEi Project Number: 0894-002-00 Received: 5/26/98 --,Redmond,WA 98052 Project Manager: Dana Carlisle Reported: 6/4/98 10:16 Extractable Petroleum Hydrocarbons by WDOE Interim TPH Policy Method North Creek Analytical-Bothell 1 I' Batch Date Date Surrogate Reporting Analyte Number Prepared Analyzed Limits Limit Result Units Notes* a ,AS-1-13.5 )3805531-01 SAE 1- C8-C10 Aliphatics 0580869 5/28/98 5/29/98 5.00 41.8 mg/kg dry C1O-C12 Aliphatics II II 5.00 215 " IL C12-C16 Aliphatics " II II 5.00 668 " .;- -k C16-C21 Aliphatics 5.00 365 " C21-C34 Aliphatics 5.00 55.1 " �h" C10-C12 Aromatics 5.00 18.2 " 1^ C12-C16 Aromatic " II II 5.00 ' 115 " C16-C21 Aromatics II II II 5.00 97.2 " C21-C34 Aromatics 5.00 20.1 " Extractable Petroleum Hydrocarbons " 1590 " Surrogate: 2-FBP " II 50.0-150 102 % Surrogate: Octacosane 50.0-150 120 " ! Surrogate: Undecane " 30.0-150 113 " s�•• MW-43-12 )3805531-02 soil - C8-C10 Aliphatics, • 0580869 5/28/98 5/29/98 5.00 24.9 mg/kg dry C10-C12 Aliphatics " II 5.00 155 " - C12-C16 Aliphatics 5.00 667 " C16-C21 Aliphatics 5.00 448 " 1 I C21-C34 Aliphatics " " " 5.00 66.5 " CIO-C12 Aromatics 5.00 ND " C12-C16 Aromatics 5.00 60.4 " -- C16-C21 Aromatics II II II 5.00 92.4 " x I C21-C34 Aromatics " " 5.00 24.1 " Extractable Petroleum Hydrocarbons " 1540 " - Surrogate: 2-FBP 1 50.0-150 95.8 % Surrogate: Octacosane " 50.0-150 126 " - Surrogate: Undecane " II II 30.0-150 73.9 " a i 1 f f • -- North Creek Analytical,Inc. *Refer to end of report for text of notes and definitions. j __ B - 16 I Joy B Ch P oject ana1 1, ge • 18939 120th Avenue N.E.,Suite 101.Bothell,WA 98011-9508 Page 6 of 15 East 11115 Montgomery,Suite B,Spokane,WA 99206-4776 cuing c W 1limh"c A,omm non,,n.,,n no o7nna_7+v,) - -- - - _ NORTH + , _ et CREEK ,,. LE • (509)420-9200 • FAX 420-9210' ''-'-� � ANALYTICAL SPOKANE ■ (509)924-9200 • FAX 924-9290 Environmental Laboratory Services PORTLAND • (503)906-9200 • FAX 906-9210 Geo Engineers-Redmond Project: OPLC-MAPLEWOOD Sampled: 5/22/98 8410 154th Ave NE Project Number: 0894-002-00 Received: 5/26/98 L Redmond,WA 98052 Project Manager: Dana Carlisle Reported: 6/4/98 10:16 Polynuclear Aromatic Hydrocarbons by GC/MS-SIM North Creek Analytical-Bothell Batch Date Date Surrogate Reporting Analyte Number Prepared Analyzed Limits Limit Result Units Notes* AS-1-13.5 B805531-01 Soil Acenaphthene 0580869 5/28/98 6/1/98 0.0100 0.122 mg/kg dry Acenaphthylene 0.0100 0.0537 " Anthracene " II 0.0100 0.0361 " Benzo(a)anthracene 0.0100 ND " Benzo(a)pyrene 0.0100 ND " Benzo(b)fluoranthene " 0.0100 ND " Benzo(ghi)perylene " 0.0100 ND " Benzo(k)fluoranthene 0.0100 ND " Chrysene " 0.0100 ND " Dibenz(a,h)anthracene " II " 0.0100 ND " Fluoranthene 0.0100 0.0287 " Fluorene 0.0100 0.360 " Indeno(1,2,3-cd)pyrene II II II 0.0100 ND " 2-Methylnaphthalene " 0.0100 0.0917 " Naphthalene II II II 0.0100 0.142 " Phenanthrene 0.0100 0.620 " Pyrene II II II 0.0100 0.0463 " Surrogate: p-Terphenyl-d14 If II II 30.0-150 38.0 % JVIW-43-12 B805531-02 Soil . Acenaphthene 0580869 5/28/98 6/1/98 0.0100 0.0183 mg/kg dry ' Acenaphthylene II 0.0100 ND " Anthracene " " 0.0100 ND " Benzo(a)anthracene " " 0.0100 ND " Benzo(a)pyrene " 0.0100 ND " Benzo(b)fluoranthene " 0.0100 ND " Benzo(ghi)perylene II II " 0.0100 ND " Benzo(k)fluoranthene " " " 0.0100 ND " Chrysene " 0.0100 ND " ,,` Dibenz(a,h)anthracene II " II 0.0100 ND " Fluoranthene II " " 0.0100 0.0165 " Fluorene " II " 0.0100 0.0201 " Indeno(1,2,3-cd)pyrene II " " 0.0100 ND " 2-Methylnaphthalene II II II 0.0100 ND " Naphthalene " II II 0.0100 0.0384 " • Phenanthrene " " II 0.0100 ND " Pyrene " 0.0100 0.0403 " Surrogate: p-Terphenyl-d14 II II II 30.0-150 39.9 % North Creek Analytical,Inc. *Refer to end of report for text of notes and definitions.- 1, { B - 17 Joy B Ch g, roje t Mana 18939 120th Avenue N.E.,Suite 101,Bothell,WA 98011-9508 Page 7 of 1'- East 11115 Montgomery,Suite B,Spokane,WA 99206-4776 / I / o.anc c%nr nlo.nh..c n•,nr.,,, o,..,•....+.-.. nn n-nne-.1on r , • NORTH 4; CREEK " ; A ANALYTICAL BOTHELL • (425)420-9200 • FAX 420-9210 SPOKANE • (509)924-9200 • FAX 924-9290 Environmental Laboratory Services PORTLAND • (503)906-9200 • FAX 906-9210 I Geo Engineers-Redmond Project: OPLC-MAPLEWOOD Sampled: 5/22/98 8410 154th Ave NE Project Number: 0894-002-00 Received: 5/26/98 Redmond,WA 98052 Project Manager: Dana Carlisle Reported: 6/4/98 10:16 i - Dry Weight Determination North Creek Analytical-Bothell I Sample Name Lab ID Matrix Result Units MW-41-15.5 B805531-00 Soil 68.1 % __ AS-1-13.5 B805531-01 Soil 71.9 { MW-43-12 B805531-02 Soil 72.9 % • • • • Y i North Creek Analytical,Inc. B — 18 , Joy B Chang roj ct nager 18939 120th Avenue N.E.,Suite 101,Bothell,WA 98011-9508 Page 8 of 15 East 11115 Montgomery,Suite B,Spokane,WA 99206-4776 ,i Odn5 S W hlimhnc Avonnn Po,.,nrinn f1n 07f1r19.71Z0 ',,.,:'----" '‘• NORTH �,� CREEK ' ' '' , ANALYTICAL BOTHELL • (425)420-9200 • FAX 420-9210 SPOKANE • (509)924-9200 • FAX 924-9290 Environmental Laboratory Services PORTLAND • (503)906-9200 • FAX 906-9210 Geo Engineers-Redmond Project: OPLC-MAPLEWOOD Sampled: 5/22/98 8410 154th Ave NE Project Number: 0894-002-00 Received: 5/26/98 Redmond,WA 98052 Project Manager: Dana Carlisle Reported: 6/4/98 10:16 Gasoline Hydrocarbons(Toluene to Dodecane)and BTEX by WTPH-G and EPA 8021B/Quality Control North Creek Analytical-:Bothell ili Date Spike Sample QC Reporting Limit Recov. RPD RPD Analyte Analyzed Level Result Result Units Recov.Limits % Limit % Notes* Batch: 0580818 Date Prepared: 5/27/98 Extraction Method: EPA 5030B(MeOHl , Blank 0580818-BLKI J Gasoline Range Hydrocarbons 5/29/98 ND mg/kg dry 5.00 Benzene ND 0.0500 Toluene II ND " 0.0500 Ethylbenzene nND " 0.0500 Xylenes(total) nND " 0.100 Surrogate: 4-BFB(FID) ll 4.00 4.07 " 50.0-150 102 Surrogate: 4-BFB(PID) 4.00 3.97 " 50.0-150 99.3 J..CS 0580818-BSI Gasoline Range Hydrocarbons 5/29/98 25.0 24.8 mg/kg dry 70.0-130 99.2 - Surrogate: 4-BFB(FID) u4.00 4.12 " 50.0-150 103 Duplicate 0580818-DUP2 B805512-06 __: Gasoline Range Hydrocarbons 5/30/98 ND ND mg/kg dry 50.0 Surrogate: 4-BFB(FID) II 5.65 5.06 " 50.0-150 89.6 Matrix Spike 0580818-MSI B805512-07 Benzene 5/30/98 0.779 ND 0.667 mg/kg dry 60.0-140 85.6 ,-- Toluene 0.779 ND 0.670 " 60.0-140 86.0 Ethylbenzene n0.779 ND 0.664 " 60.0-140 85.2 I' Xylenes(total) n2.34 ND 2.01 " 60.0-140 85.9 Surrogate: 4-BFB(PID) II 6.23 5.49 " 50.0-150 88.1 Matrix Spike Dup 0580818-MSDI B805512-07 Benzene 5/30/98 0.779 ND • 0.682 mg/kg dry 60.0-140 87.5 20.0 2.20 - Toluene " 0.779 ND 0.678 60.0-140 87.0 20.0 1.16 ' Ethylbenzene n0.779 ND 0.670 " 60.0-140 86.0 20.0 0.935 Xylenes(total) n2.34 ND 2.04 " 60.0-140 87.2 20.0 1.50 Surrogate: 4-BFB(PID) II 6.23 5.47 " 50.0-150 87.8 North Creek Analytical,Inc. *Refer to end of report for text of notes and definitions GI Joy B Chang ro ect ager .r 18939 120th Avenue/IN.E. Su to 101,Bothell,WA 98011-9508 Page 9 of l; East 11115 Montgomery,Suite B.Spokane,WA 99206-4776 odn5 C W Nimhiic Awan$Ip Rnavarinn f1R o7lf1R-71Z7 :- -..-.4::-:-----'-':----. NORTH .: = . i; CREEK • . ;: BOTHELL • (425)420-9200 • FAX 420-9210 ANALYTICAL SPOKANE ■ (509)924-9200 • FAX 924-9290 Environmental Laboratory Services PORTLAND • (503)906-9200 • FAX 906-9210. Geo Engineers-Redmond Project: OPLC-MAPLEWOOD Sampled: 5/22/98 8410 154th Ave NE ' Project Number: 0894-002-00 Received: 5/26/98 -, Redmond,WA 98052 Project Manager: Dana Carlisle Reported: 6/4/98 10:16 „- ;, Volatile Petroleum Hydrocarbons by WDOE Interim TPH Policy Method/QualityControl North Creek Analytical-Bothell 1_t Date Spike Sample QC Reporting Limit Recov. RPD RPD Analyte Analyzed Level Result Result Units Recov.Limits % Limit i % Notes* 1 j Batch: 0580818 pate Prepared: 5/27/98 extraction Method: EPA 5030B(MeOH) $lank 0580818-BLKI _. C5-C6 Aliphatics 5/29/98 ND mg/kg dry 5.00 C6-C8 Aliphatics " ND " 5.00 C8-C10 Aliphatics i, ND " 5.00 C10-C12 Aliphatics ND " 5.00 C8-C10 Aromatics II ND 5.00 i C10-C12 Aromatics " ND 5.00 C12-C13 Aromatics ND " 5.00 Surrogate: 4-BFB(FID) 4.00 4.07 " 60.0-140 102 Surrogate: 4-BFB(PID) II 4.00 3.27 60.0-140 81.7 JCS 0580818-BS2 I C5-C6 Aliphatics 5/29/98 2.00 1.37 mg/kg dry 70.0-130 68.5 4 1„l C6-C8 Aliphatics " 1.00 0.892 " 70.0-130 89.2 C8-C10 Aliphatics 1 1.00 1.20 " 70.0-130 120 ---T C10-C12 Aliphatics 1.00 0.960 " 70.0-130 96.0 C8-C10 Aromatics 4.00 3.28 " 70.0-130 82.0 - C10-C12 Aromatics " 1.00 0.974 " 70.0-130 97.4 C12-C13 Aromatics " 2.00 1.40 " 70.0-130 70.0 Surrogate: 4-BFB(FID) 4.00 3.86 " 60.0-140 96.5 ti Surrogate: 4-BFB ;'PID) 4.00 2.99 " 60.0-140 74.8 Duplicate 0580818-DUPI J1805512-05 i C5-C6 Aliphatics 5/30/98 ND ND mg/kg dry l 25.0 C6-C8 Aliphatics 1 ND ND " 25.0 __. C8-Cl0 Aliphatics II 6.86 7.44 " 25.0 8.11 C10-C12 Aliphaticsi 16.9 19.0 " 25.0 11.7 ,__' C8-C 10 Aromatics ' " ND ND " 25.0 CI0-C12 Aromatics II 16.0 16.3 " 25.0 1.86 �t C12-C13 Aromatics,' It 20.8 21.6 25.0 3.77 l+ Surrogate: 4-BFB(FID) 6.12 6.23 " 60.0-140 102 Surrogate: 4-BFB(PID) 6.12 4.72 " 60.0-140 77.1 jV j Y • --- North Creek Analytical,Inc. *Refer to end of report for text of notes and definitions. j p Joy B Chang, of ct pager 18939 120th Avenue N.EB,Suite 101,Bothell,WA 98011-9508 Page 10 of 15 East 11115 Montgomery,Suite B,Spokane,WA 99206-4776 acing C VII Alimhitc ti,wni.o P ,,,nrtnn nn mnnu_7110 .:4_ ._ NORTH CREEK . ��.� .. ', � �N�� BOTHELL ■ (425)420-9200 ■ FAX 420-9210 , SPOKANE • (509)924-9200 • FAX 924-9290 Environmental Laboratory Services PORTLAND • (503)906-9200 • FAX 906-9210 - Geo Engineers-Redmond Project: OPLC-MAPLEWOOD Sampled: 5/22/98 8410 154th Ave NE Project Number: 0894-002-00 Received: 5/26/98 I Redmond,WA 98052 Project Manager: Dana Carlisle Reported: 6/4/98 10:16 BTEX,MTBE and Naphthalene by WDOE Interim TPH Policy Method using GC/MS/Quality Control North Creek Analytical-Bothell Date Spike Sample QC Reporting Limit Recov. RPD RPD Analyte Analyzed Level Result Result Units Recov.Limits % Limit % Notes*, Batch: 0580918 Pate Prepared: 5/29/98 Extraction Method: EPA 5030B[MeOH] Blank 0580918-BLKI Methyl tert-butyl ether 5/30/98 ND mg/kg dry 1.00 Benzene ND 0.100 Toluene ND " 0.100 Ethylbenzene ND " 0.100 m,p-Xylene " ND " 0.400 o-Xylene ND " 0.100 Naphthalene II ND " 0.100 Surrogate: 2-Bromopropene 2.00 1.97 " 70.0-130 98.5 Surrogate: 1,2-DCA-d4 2.00 2.03 70.0-130 101 Surrogate: Toluene-d8 II 2.00 1.95 " 70.0-130 97.5 Surrogate: 4-BFB II 2.00 1.88 " 70.0-130 94.0 JCS 0580918-BSI Benzene 5/30/98 1.00 0.886 mg/kg dry 70.0-130 88.6 Toluene 1.00 0.763 " 70.0-130 76.3 Surrogate: 2-Bromopropene 2.00 1.81 " 70.0-130 90.5 Surrogate: 1,2-DCA-d4 II 2.00 1.98 " 70.0-130 99.0 Surrogate: Toluene-d8 2.00 1.84 " 70.0-130 92.0 Surrogate: 4-BFB 2.00 1.77 " 70.0-130 88.5 Matrix Spike 0580918-MSI )3805497-04 Benzene 5/30/98 1.47 ND 1.47 mg/kg dry 70.0-130 100 Toluene 1.47 ND 1.33 70.0-130 90.5 Surrogate: 2-Bromopropene 2.94 2.75 " -70.0-130 93.5 Surrogate: 1,2-DCA-d4 II 2.94 2.63 " 70.0-130 89.5 Surrogate: Toluene-d8 II 2.94 2.68 " 70.0-130 91.2 Surrogate: 4-BFB 2.94 2.74 " 70.0-130 93.2 Matrix Spike Dup 0580918-MSDI i380549.7-04 1 Benzene- 5/30/98 1.47 ND 1.40 mg/kg dry 70.0-130 95.2 20.0 4.92 Toluene " 1.47 , ND 1.25 70.0-130 85.0 20.0 6.27 Surrogate: 2-Bromopropene " 2.94 2.43 " 70.0-130 82.7 Surrogate: 1,2-DCA-d4 II 2.94 2.69 " 70.0-130 91.5 Surrogate: Toluene-d8 2.94 2.61 " 70.0-130 88.8 Surrogate: 4-BFB 2.94 2.58 " 70.0-130 87.8 i North Creek Analytical,Inc. *Refer to end of report for text of notes and definitions.'] Jo BChan ,Poect ana B - 21 • y g 18939 120th Avenue N.E.,Suite 101,Bothell,WA 98011-9508 Page 11 of 1', ' East 11115 Montgomery,Suite B,Spokane,WA 99206-4776 ' �� • � AAl1C C 1A/ �I:...4.....A........- t]......-.a-_ 111'f n�nnl,7A n.f r" i__ w}.-n---;'::=_ NORTH q CREEK . A ANALYTICAL SPOKANE,• (509)924-9200 • FAX 924-9290 Environmental Laboratory Services PORTLAND'■ (503)906-9200 ■ FAX 906-9210 , ' Geo Engineers-Redmond Project: OPLC-MAPLEWOOD Sampled: 5/22/98 - 8410 154th Ave NE Project Number: 0894-002-00 Received: 5/26/98 I--, Redmond,WA 98052 Project Manager: Dana Carlisle Reported: 6/4/98 10:16 I. - • Diesel Hydrocarbons(C12-C24)by WTPH-D/Quality Control . North Creek Analytical Bothell . t I Date Spike Sample QC Reporting Limit Recov. RPD RPD Analyte Analyzed Level Result Result Units Recov.Limits % Limit % Notes* ` Patch: 0580825 Pate, Prepared: 5/27/98 Extraction Method: EPA 3550B _- Blank 0580825-BLKI Diesel Range Hydrocarbons 5/27/98 ND mg/kg dry 10.0 ' Surrogate: 2-FBP II 10.7 8.87 " 50.0-150 82.9 � a LCS 0580825-BSI f ' Diesel Range Hyd, carbons 5/27/98 66.7 54.2 mg/kg dry 60.0-140- 81.3 j I Surrogate: 2-FBP 10.7 9.67 " 50.0-1 S0 90.4 . i--' Duplicate 0580825-DUPI B805531-00 Diesel Range Hydrocarbons 5/27/98 ND ND mg/kg dry 50.0 Surrogate: 2-FBP II 15.7 12.2 " 50.0-150 77.7 A, batch: 0580943 Date Prepared: 5/29/98 Extraction Method: EPA 3550E i blank 0580943-BLKI Diesel Range Hydrocarbons 5/29/98 ND mg/kg dry 10.0 ---• Surrogate: 2-FBP 10.7 10.3 " 50.0-150 96.3 `- JCS 0580943-BS1 Diesel Range Hydrocarbons 5/29/98 66.7 68.1 mg/kg dry 60.0-140 102 ~, Surrogate: 2-FBP II 10.7 11.8 " 50.0-150 110 Duplicate 0580943-DUPI )B805610-01 )fr"--1 Diesel Range Hydrocarbons 5/29/98 57.2 53.1 mg/kg dry 50.0 7.43 j i Surrogate: 2-FBP II 14.7 14.5 50.0-150 98.6 • ~ I • • " North Creek Analyl ical,Inc. *Refer to end of report for text of notes and definitions. Joy B Chang, ro ct 'aria 18939120th Avenue Ni.,Sui2201,Bothell,WA 98011-9508 Page 12 of 15 East 11115 Montgomery.Suite B,Spokane,WA 99206-4776 QdnS c U! Alimhiw wonnr Rno„nr4nn no orinn9.7119 ,.- j - v_4_ NORTH ..�:._-441 CREEK , •' . .- , ANALYTICAL BOTHELL • (425)420-9200 • FAX 420-9210 ' , SPOKANE ■ (509)924-9200 ■ FAX 924-9290 - Environmental Laboratory Services PORTLAND • (503)906-9200 • FAX 906-9210 Geo Engineers-Redmond Project: OPLC-MAPLEWOOD Sampled: 5/22/98 8410 154th Ave NE Project Number: 0894-002-00 Received: 5/26/98 l_ Redmond,WA 98052 Project Manager: Dana Carlisle Reported: 6/4/98 10:16 Extractable Petroleum Hydrocarbons by WDOE Interim TPH Policy Method/Quality Control . North Creek Analytical=Bothell Date Spike Sample QC Reporting Limit Recov. RPD RPD Analyte Analyzed Level Result Result Units Recov.Limits % Limit % Notes* $atch: 0580869 pate Prepared: 5/28/98 Extraction Method: EPA 3550B , plank 0580869-BLKI C8-C10 Aliphatics 5/28/98 ND mg/kg dry 5.00 C10-C12 Aliphatics ND " 5.00 C12-C16 Aliphatics ND " 5.00 C16-C21 Aliphatics II ND ' " 5.00 C21-C34 Aliphatics ND " 5.00 C10=C12 Aromatics ND " 5.00 C12-C16 Aromatics II ND " 5.00 C16-C21 Aromatics ND " 5.00 C21-C34 Aromatics " ND " 5.00 Extractable Petroleum Hydrocarbons " ND " Surrogate: 2-FBP • 12.0 11.5 " 50.0-150 95.8 Surrogate: Octacosane 12.0 14.9 " 50.0-150 124 Surrogate: Undecane 12.0 9.68 " 30.0-150 80.7 LCS 0580869-BS1 Extractable Petroleum Hydrocarbons 5/28/98 167 110 mg/kg dry 30.0-120 65.9 Surrogate: 2-FBP 12.0 11.5 " 50.0-150 95.8 Surrogate: Octacosane 12.0 15.4 " 50.0-150 128 Surrogate: Undecane 12.0 8.91 " 30.0-150 74.2 JCS Dup 0580869-BSDI Extractable Petroleum Hydrocarbons 5/28/98 167 116 mg/kg thy 30.0-120 69.5 40.0 5.32 Surrogate: 2-FBP 12.0 11.7 " 50.0-150 97.5 Surrogate: Octacosane 12.0 16.2 " 50.0-150 135 Surrogate: Undecane 12.0 9.74 " 30.0-150 81.2 Matrix Spike 0580869-MSI B805531-01 Extractable Petroleum Hydrocarbons 5/29/98 232 1590 1280 mg/kg dry 30.0-120 NR 5 Surrogate: 2-FBP 16.7 16.7 " 50.0-150 100 Surrogate: Octacosane 16.7 20.3 " 50.0-150 122 Surrogate: Undecane 16.7 14.2 " 30.0-150 85.0 North Creek Analytical,Inc. *Refer to end of report for text of notes and definitions.] •, B - 23 Joy B Chang, roj ct anager' 18939 120th Avenue N.E.,Suite 101,Bothell,WA 98011-9508 Page 13 of l : East 11115 Montgomery,Suite B,Spokane,WA 99206-4776 \ ` aim;c Al1 plimhi,c A,mnun Pn..n-4.... nr,n^nno-»o0 r�, _r:::::3:': NORTH • 4� = - Er -- -°s:41 CREEK 1>;.-, ; 1 , BOTHELL • (425)420-9200 ■ FAX 420-9210 �. L • ANALYTICAL SPOKANE • (509)924-9200 • FAX 924-9290 Environmental Laboratory Services PORTLAND • (503)906-9200 • FAX 906-9210 Geo Engineers-Redmond Project: OPLC-MAPLEWOOD Sampled: 5/22/98 8410 154th Ave NE Project Number: 0894-002-00 Received: 5/26/98 :-,Redmond,WA 98052 Project Manager: Dana Carlisle Reported: 6/4/98 10:16 Polynuclear Aromatic Hydrocarbons by GC/MS-SIM/ uali Control. North Creek Analytical-Bothell .• __ Date Spike Sample QC Reporting Limit Recov. RPD RPD Analyte Analyzed Level Result Result Units Recov.Limits % Limit % Notes* h)catch: 0580869 pate Prepared: 5/28/98 Extraction Method: EPA 3550B lank 0580869-BLK1 Acenaphthene 5/30/98 ND mg/kg dry 0.0100 Acenaphthylene ND 0.0100 (_r Anthracene uND 0.0100 Benzo(a)anthracene , ND " 0.0100 -`Benzo(a)pyrene " ND 0.0100 Benzo(b)fluoranthene n ND 0.0100 Benzo(ghi)perylene II ND " 0.0100 i Benzo(k)fluoranthene I. ND 0.0100 ' Chrysene uND 0.0100 `--' Dibenz(a,h)anthracene tiND " 0.0100 Fluoranthene uND 0.0100 Fluorene ND " 0.0100 i r_2 Indeno(1,2,3-cd)pyrene ft ND " 0.0100 2-Methylnaphthalede ND 0.0100 ,T Naphthalene ND 0.0100 . Phenanthrene H ND " 0.0100 - Pyrene ii ND " 0.0100 Surrogate: p-Terplenyl-d14 II 0.250 , 0.129 " 30.0-150 51.6 1__ JCS 0580869-BSI, Chrysene 5/30/98 0.0667 0.0527 mg/kg dry 10.0-125 79.0 i Fluorene 0.0667 0.0453 11.0-116 67.9 Indeno(1,2,3-cd)pyrene I. 0.0667 0.0540 " 10.0-147 81.0 Surrogate: p-Terphenyl-d14 II 0.250 0.122 " . •30.0-150 48.8 JCS Dup 0580869-BSD1 i --' Chrysene 5/30/98 0.0667 0.0593 mg/kg dry 10.0-125 88.9 28.0 11.8 Fluorene 0.0667 0.0453 " 11.0-116 67.9 32.0 0 j Indeno(1,2,3-cd)pyrene " • 0.0667 0.0600 " 10.0-147 90.0 34.0 10.5 Surrogate: p-Terphenyl-d14 0.250 0.137 " 30.0-150 54.8 --, Matrix Spike 0580869-MS1 R805531-01 Chrysene 5/30/98 0.0927 ND 0.0834 mg/kg dry 10.0-125 90.0 Fluorene ; II 0.0927 0.360 0.352 10.0-154 NR 5 Indeno(1,2,3-cd)pyrene II 0.0927 -ND 0.0788 " ' 10.0-144 85.0 --7 Surrogate: p-Terphenyl-d14 " 0.347 0.162 " 30.0-150 46.7 I • j-, North Creek Analytical,Inc. *Refer to end of report for text of notes and definitions. 7.-----.. . • ice; Joy B Chang,P jec M ger i • 18939 120th Avenue N.E.,,Suite 101,Bothell,WA 98011-9508 Page 14 of 15 East 11115 Montgomery,Suite B,Spokane,WA 99206-4776 I. wing c UV Mimhnr A,,nn... Dam,..-inn no 070fl4_71Q7 ,4 • NORTH •' 4- CREEK : ANALYTICAL t+ �• BOTHELL • (425)420-9200 • FAX 420-9210 SPOKANE • (509)924-9200 • FAX 924-9290 Environmental Laboratory Services PORTLAND • (503)906-9200 • FAX 906-9210 Geo Engineers-Redmond Project: OPLC-MAPLEWOOD Sampled: 5/22/98 8410 154th Ave NE Project Number: 0894-002-00 Received: 5/26/98 Redmond,WA 98052 Project Manager: Dana Carlisle Reported: 6/4/98 10:16 Notes and Definitions # Note I" 1 The reporting limit for this analyte has been raised to account for interference from coeluting organic compounds present in the sample. 1' 2 The surrogate recovery for this sample cannot be accurately quantified due to interference from coeluting organic compounds present in the sample. 3 Due to interference from coeluting organic compounds with the primary surrogate,results of the secondary surrogate have been used to control the analysis. 4 The spike recovery for this QC sample is outside of established control limits.Review of associated batch QC indicates the recovery for this analyte does not represent an out-of-control condition for the batch. 5 The RPD and/or percent recovery for this QC spike sample cannot be accurately calculated due to the high concentration of analyte already present in the sample. 6 The sample chromatogram indicates the presence of a diesel range hydrocarbon.Quantitation of this product is more accurately accomplished using WTPH-Dx methodology,therefore,the concentrations reported from the WTPH-Dx should be considered our best estimate of hydrocarbon concentrations in the sample. 7 Please see case narrative. DET Analyte DETECTED ND Analyte NOT DETECTED at or above the reporting limit NR Not Reported dry Sample results reported on a dry weight basis Recov. Recovery RPD Relative Percent Difference • North Creek Analytical,Inc. Joy B C _ Pr., ct Man B — 25 18939120th Avenue N.E.,Suite 101,Bothell,WA 98011-9508 Page 15 of 1: East 11115 Montgomery,Suite B,Spokane,WA 99206-4776 nAnC C CAI RN.-.�.._ A'"_- - ^-- ...... Qiantitation Report Data File : C:\HPCHEM\4\DATA\E29072 .D Vial : 52 Acq On : 5-29-98 11:10 :50 PM Operator: ajg I ' Sample : b805531-00 Inst : GC #7 • Misc : s Multiplr: 1. 00 IntFile : SURR.E QuantHTime: Jun 1 7 :19 1998 Quant Results File: TPHD.RES 1 Quant Method : C:\HPCHEM\4\METHODS\TPHD.M (Chemstation Integrator) Title' : TPH-D Front Method Last Update : Wed May 27 07 :36 :16 1998 Response via : Multiple Level Calibration DataAcq Meth : TPHD.M i Volum'e Inj . I . _,_ Signal Phase : Signal Info . Response_ ; E29072.D\FID1A �, _ di 9500000 '' 90000001 85000001 • 80000001 , - 1 1 ' 7500000j ' 1 , 70000001 • 6500000- ' 6000000- ' 5500000- 5000000- 4500000-p I 4000000 11 35000001 3000000; i 2500000 2000000 1 1500000 __- 1000000y1 • 500000 t • 1 -500000 1 -1000000- --i o a O o e w f, 8 N V t o_ r $ U 3 = N C HH Time 1.00 2.00 3.00 4.00 5.00 6.00 7.00 8.00 9.00' 10.00 11.00 12.00 13.00 14.00 15.00 B - 26 E29072.D TPHD.M Mon Jun 01 07 :19 :07 1998 Page 2 Quantitation Report , Data File : C:\HPCHEM\3\DATA.SEC\E27015 .D Vial : 12 Acq On : 27 May 1998 7 :47 pm Operator: kr1 Sample : b805531-02 Inst : GC #5 „ Misc : s Multiplr: 1. 00 IntFile : SURR.E Quant Time: May 28 15:52 1998 Quant Results File: NWTPHD2 .RES Quant Method : C:\HPCHEM\3\METHODS\NWTPHD2 .M (Chemstation Integrator) Title : Northwest Rear Method Last Update : Tue May 12 13 :11:a6 1998 Response via : Multiple Level Calibration DataAcq Meth : TPHD.M Volume Inj . : Signal Phase : Signal Info . Response_ E27015.D1FID2B . [:,, d 1 cri m • • 95000: II 90000 ;iI I ;I � I I 85000 I I I I! i Ili • 800001 I ; 75000 i _ i 700001 ! 1 '' 65000- i • 60000- 1 i EI 55000- I HI iii50000- • I ,I 1 11 45000- - 40000- ! 35000- I II - 30000- \ , I I 25000- i 20000- . i \ 15000 111, • • 10000- j I , I i j: i II • '%5000 ., 1 d_..,,,„...„A a ' L •. : .04 -5000 . . , - i • , 10000-1 I = m m re 75 8 "a i G d .T. O 4' C I LL 3 Do ❑ N ❑ C F V = , -. v Time 0.00 2.00 4.00 .6.00 8.00 10.00 12.00 14..00 16.00 18.00 20.00 22.00 24.00 26.00 28.00 E27015.D NWTPHD2.M, • Thu May 28 1 8:52?59 1998 Page 2 , H i Quantitation Report Data File : C:\HPCHEM\1\DATA\E28036 .D Vial : 17 Acq On--- : 29 May 1998 5 :50 am Operator: NJA i Sample : b805531-02 al Inst, : GC #1 Misc Multiplr: 1. 00 IntFile : SURR.E ---, Quant Time: May 29 11: 03 1998 Quant Results File: MTCA.RES Quant Method : C:\HPCHEM\l\METHODS\MTCA.M (Chemstation Integrator) Title, : EPH Front Method Last Update : Fri May 29 10 :52 :02 1998 4 - Response via : Multiple Level Calibration DataAicq Meth : TPHD.M Volume Inj . . Signal Phase : Signall Info . pesponse_ E28036.D\FIDIA • 95000- • 1 90000- 1 I I 85000- iI� 80000 I 1, 11 75000- 11 'j 70000 a • I --, ' 65000- 60000- i 55000- I` - 50000- ' i II I j ' _ -" 45000 40000- I 1 35000- • 30000- 25000 • } 20000 1 ! 15000-1 i j i 10000 5000 , t_j_11_,..,L!,,.,_0:di°I i - 01 11 -5000 -10000 . m i d __ O N fD fD N m e N X , 5 t) U U UUUU UU v U U U a D O ^ N O O 1 D f 0 0 m = M M Time 0.00 2.00 4.00 6.00 8.00 10.00 12.00 14.00 16.00 18.00 20.00 22.00 24.00 26.00 28.00 E28036.D MTCA.M Fri May 29 11:0t: 09281998 GC#3 Page 2 Quantitation Report Data File : C:\HPCHEM\l\DATA\E28038 .D Vial : 18 Acq On : 29 May 1998 6 :29 am Operator: NJA - Sample : b805531-02 ar Inst : GC #1 Misc Multiplr: 1 . 00 IntFile : SURR.E Quant Time: May 29 10 : 05 1998 Quant Results File: MTCA.RES Quant Method : C:\HPCHEM\1\METHODS\MTCA.M (Chemstation Integrator) Title EPH Front Method Last Update : Fri May 29 09 :55 :22 1998 Response via : Multiple Level Calibration DataAcq Meth : TPHD.M Volume Inj . Signal Phase : Signal Info Response_ E28038.D\FID1A I 950001 90000- 85000- 80000- 75000' 70000 65000- 60000- 55000- 0. a 50000 45000- 1 I, I 40000- � 35000 I� I h� �, 30000; I g 25000- in 20000- ' '1' I 15000 10000- 5000- m co 0 -5000- -10000 G N N 0 ,n 0 CO e U U U U U U C)U 00 U U U m 8 O N 8 O 8 8 88 2 Time 0.00 2.00 4.00 6.00 8.00 10.00 12.00 14.00 16.00 18.00 20.00 22.00 24.00 26.00 28.00 B - 29 E28038.D MTCA.M Fri May 29 10 :05 :54 1998 GC#3 Page 2 Quantitation Report i , Data File : C: \HPCHEM\2\DATA\052998\E29029.D\FIDIA.CH Vial: 29 . AcqOn Sam On : 29 May 1998 9 : 53 pm ` Operator: hsd B805531-00 `I Misc 100 ul • Inst GC #4 __' IntFile : SURR.E Multiplr: 1. 00 ---. Data File : C: \HPCHEM\2\DATA\052998\E29029. D\FID2B. CH Vial: IAj Acq On : 29 May 98 9: 53 pm 29 Sample : B805531-00 Operator: hsd r Misc 100 ul Inst GC #4 IntFile : SURR2 .E Multiplr: 1. 00 - Quant Time: Jun 1 7:29 1998 Quant Results File: TPHGS.RES ~ Quant Method : C: \HPCHEM\2\METHODS\TPHGS.M (Chemstation Integrator) Title : TPH-G Soil Method Last Update : Wed May 20 12 : 33 : 50 1998 Response via : Multiple Level Calibration DataAcq Meth : TPHGS.M Volume Inj . • ( ', Signal #1 Phase : Signal #2 Phase: _ Si•nal #1 Info 'esponse_ Si•nal #2 Info : I!! E29029.D1FID1A 35000 I 30000• 111I1 411 t_i 25000, II' S 20000 I 15000 1— 10000 i + 5000 I ~ s N i SI9 jy a o O. m 1 N IV O 9 ime 0.00 2.00 6.00 8.00 4'� 10.00 12.00 14.00 16.00 18.00 20.00 22,00 'esponse_ L--' 140000 1 E29029.D1FID28 • 120000 100000 80000; 0 1 60000 1 {— 40000 j i i; 11 20000 I N a. 1 "� u poi S°J. °' a, d N G d ;. n m rJ r_f ime 0.00 2.Q0 $ x m A . ! 4.00 6.00 • 8.00 10.00 12.00 14.00 16.00 18.00 20.00 22,00 E29029.D TPHGS.M Mon Jun 01 07:29:45 1998 • B Page 2 • - 30 Quantitation Report Data File : C: \HPCHEM\2\DATA\052998\E29030. D\FID1A.CH Vial: 30 Acq On : 29 May 1998 10: 22 pm Operator: hsd Sample : B805531-01 Inst : GC #4 Misc : 5 ul Multiplr: 20. 00 ; i IntFile : SURR.E Data File : C: \HPCHEM\2\DATA\052998\E29030. D\FID2B.CH Vial: 30 Acq On : 29 May 98 10: 22 pm Operator: hsd Sample : B805531-01 Inst : GC #4 Misc : 5 .u1 Multiplr: 20. 00 IntFile : SURR2 .E Quant Time: Jun 1 7 : 30 1998 Quant Results File: TPHGS.RES Quant Method : C: \HPCHEM\2\METHODS\TPHGS.M (Chemstation Integrator) Title : TPH-G Soil Method Last Update : Wed May 20 12 : 33 : 50 1998 Response via : Multiple Level Calibration DataAcq Meth : TPHGS.M ' Volume Inj . • Signal #1 Phase : Signal #2. Phase: Signal #1 Info Signal #2 Info : -esponse_ E29030.D\FIDIA I 35000 j 30000 25000 20000 15000 ' ! 10000] .i, 1 . \ „ 5000 4 I k�- a 2 A r/` nV Jh T , r I r . i I r . I r !me 0.00 2.00 4.00 6.00 8.00 10.00 12.00 14.00 16.00 18.00 20.00 22.00 esponse_ E29030.D1FID2B 140000] 120000 100000 80000 6 8 60000 40000 °' M 20000 :,.. ti ; $ %0;. m 0. r N o d 1 m u, m c z. v W. $ 5. $ S. LL a i s X [D ime 0.00 '2.00 4.00 6.00 8.00 10.00 12.00 14.00 16.00 18.00 20.00 22.00 I E29030.D TPHGS.M Mon Jun 01 07: 30:44 1998 Page 2 • B - 31 uuanLli-aLi'-+ii rs. pULL. - DatalFile : C: \HPCHEM\2\DATA\052998\E29031.D\FIDIA.CH Vial: 31 Acq Qn : 29 May 1998 10: 52 pm Operator: hsd Sample : B805531-02 Inst : GC #4 Misc ' : 100 ul Multiplr: 1. 00 IntFile : SURR.E rm I Data; File : C: \HPCHEM\2\DATA\052998\E29031.D\FID2B.CH Vial: 31 Acq On : 29 May 98 10: 52 pm Operator: hsd _- Sample : B805531-02 Inst : GC #4 Misc : 100 ul Multiplr: 1. 00 IntFile : SURR2 .E Quant Time: Jun 1 7 : 31 1998 Quant Results File: TPHGS.RES '. Quant Method : C: \HPCHEM\2\METHODS\TPHGS.M (Chemstation Integrator) Title : TPH-G Soil Method Last Update : Wed May 20 12 : 33 : 50 1998 Response via : Multiple Level Calibration DataAcq Meth : TPHGS.M Volume Inj . • . Signal #1 Phase : Signal #2 Phase: Signal #1 Info Signal #2 Info : Response_ E29031.D\FID1A 35000 I I 30000 J I ' I i G • 25000W 1 ,' Ill I 20000 Iil I • r NI I , 15000 a +I I I .! 10000 I f � , , ' Vr 5000 !�� t '\,, o p, 0� ~ m - o A a m R NCD Time 0!00 2.00 4.00 6.00 8.00 10.00 12.00 14.00 16.00 18.00 20.00 22.00 Response I E29031.D'FID2B 'I 140000 i; 120000•'. It \L 100000 11 80000, 60000 ` 40000 I , 20000 :1_, '� 1 0� - ea a 0.a m m oE. iu • 1co 2 d o __ i Time 0.00 2.00 4.00 6.00 8.00 10.00 12.00 14.00 16.00 18.00 20.00 22.00 ,- E29031.D TPHGS.M Mon Jun 01 07 :31: 50 1998 Page 2 I B - 32 / )L1l) iV\ L IR7}9 IIUIh Aveour:l[.,S�ure 101, I)olhcll,WA 7E01 I.9501 I2O61 F91•V?I:C FAX 423•=593 CREEK q/ ElII I I I IS INteltgurrery•.So D. Spa art..WA 97 1779 i 109I 4?1-9200 FAX 731-92.10• I a A NALYTI CAL e N C 7405 SAY Nimbu Avenue, UCavertan•OR 01008•i 11.2 NViM3.9.W TAX(rli-.1101 I Enrira:mer,J*JLabararaySeNTcaa 1 : m L • CHAIN OF CUSTODY REPORT Work Order # KF 0 SS I 11Q I RLPORTTO: INVOICU TO: n TURNAROUND REQUEST in Alaimo Oro' Cam, (mefei g ) ATTEA7loN: h{ ATtiE?(1KA�! Organic wBc.4�al( tri r r ADDRESS: S1 10 /Pi /�/•'e_ I L c, ADDRESS: U 7 IS t U I IJ 11 I en —. q V yr Nth S I ydraafbw final tes R W tt \tJ Vmr T� MOM: �? 8Z ( ,0 CIO (1 /6EL:dLdiI iFA7C P.O.h-11�1mer I SlucrreT: . D4 ID -(,� Z MOJECTNOM O 9 �AndyJl. � � ��`� I� �C , `AOIKTVUAI9ER: oQ �v I-QV�"o o [OTHEGP pry: O MIMED BY: G _ 4.�`fL`�) LU J' 'fir•menunJAryWS,/ireiAhrnahnebpdinriacur Not cw"..r. CLJENF3AMPLQ SA)IPLIKG NCASAr.IPL&ID �1en ',WW1 !I OF r IDEYTFICATIDN DATFJTDIE t(sDwuxyC:40400 1W.5,A.0) CONTAINERS 00).DtENtTS bR71. f/W 1- 15; S -2z //1��D Thro.5.53 I o t) X )( s I -(- /3, 5— .22.4d — 0 ► )xv k 1� T � �' —f — 1 w-Y3 - 12# :zV g —b z-,_ ,)( )C * J.- 4 S ( m CD In I. . N S . , / (1)841091. 1_ NJ f t L 6 3 _ . M. , IIG IIMQU6 0v14..v..4AEV4/l. DATE:C. Re[eT9EDonft. 'riC Aa liT/l," m a4/7? EMT NAME iSkr 1` - StNov Ape.), FIRM: 6-IfL— TTME j O C76 PRIlvrrcAl<Ie IViCJC�c� � .: Nen- Ta'E/.32 -v co co 19 tO CA RELINQIJISTIEDEYrn.•••+r OATE RECEIVED RYimmure OAT@: CV W f9 PRITNAME_ FLQM: TIME: IME:: PRINT NAM. FM Mt TAE . Z AUDIT OVAL RESIARKS.A. ✓] i a( e/A0J PIO i� VO ,O 6S.+t L. V K// if tp^ (4 G/ /V-Irw R 09^,, " t/�T� �i1c1��t-F PA-1PA-14a • C(7,irrv. ', i__ &cm- (,: tt_ fit- — rU An‘'\J A P --eP`ti- 1 RF ' . Quantitation Report • Data File : C:\HPCHEM\1\DATA\E28028 .D Vial : 16 ~ Acq On : 29 May 1998 3 : 14 am Operator: NJA , Sample : b805531-01 ar Inst : GC #1 Misc , Multiplr: 1. 00 IntFile : SURR.E ' I QuantlTime: May 29 10 :04 1998 Quant Results File: MTCA.RES . QuantjMethod : C:\HPCHEM\1\METHODS\MTCA.M (Chemstation Integrator) Title : EPH Front Method Last Update : Fri May 29 09 :55 :22 1998 Response via : Multiple Level Calibration DataAcq Meth : TPHD.M Volume Inj . Signal Phase : Signal Info . -esponse_ ; E28028.D\FID1A 95000 1 i I 90000 ! _ 85000I ; • 80000 • I ' 75000- I I _ 70000- V 65000- I • . i -- 60000- i ! --, 55000- ' I L 1 50000 ' I i I I 45000 i I ', ' I , ,1 i ICI 40000- I ijl I . 35000 i • 1 a IIP, . I 1 I 30000j; i i1 , i � ' 25000- 1 ICI 20000- ' ! 'i ,k' 15000' 1 ' , i 10000 1. • Na'L 5000t I ,, O I' j -5000- • -10000 O DI DI CD N N CON N N $ g 8 g u 5 U 5 U U U u 00 U U 0 G O O N_ 8888 88 d N N N • ' „ 1 . . . .Y . . . . , , . , ,? , f'„Y . 61 .555,5 , 55, ,y+• . , Y„s . Y„ 1 , , , , i . , , . . 1 „ Time 0.00 2.00 4.00 6.00 8.00 10.00 12.00 14.00 16.00 18.00 20.00 22.00 24.00 26.00 28.00 i E28028.D ; MTCA.M Fri May 29 1004 :19 1998 GC#3 Page 2 B - 34 Quantitation Report Data File : C:\HPCHEM\1\DATA\E28026 .D Vial : 15 Acq On : 29 May 1998 2 :35 am Operator: NJA Sample : b805531-01 al Inst : GC #1 Misc Multiplr: 1. 00 IntFile : SURR.E Quant Time: May 29 11:02 1998 Quant Results File: MTCA.RES Quant Method : C:\HPCHEM\l\METHODS\MTCA.M (Chemstation Integrator) Title : EPH Front Method Last Update : . Fri May 29 10 :52 :02 1998 Response via : Multiple Level Calibration DataAcq Meth : TPHD.M Volume Inj . Signal Phase : Signal Info Response_1 E28026.D'FIDIA� 4 0 r 950001 1 I' I � 90000I i 850001 I 800001 i 75000- I 70000- i 65000- 0 r 1 1 i 60000 55000 50000- ` I 45000- 4 I ' , 400001 j I i 350004 30000-I {-1 25000 , I, 20000, 15000- i \ 1-' 10000 ' I1 'I 5000 i 11160a6 I I 1,J I- �—___ 0I -5000{ 1 11 -10000 i a,o N 'o io• n m in 1 II 2 2 a e fo cI U U p0 U C.) VUCSU VV Z EL? V 9 O 6 N N O O 10 8 8 8 1 Zj N N N Time 0.00 2.00 4.00 6.00 8.00 10.00 12.00 14.00 16.00 18.00 20.00 22.00 24.00 26.00 28.00 E28026 .D MTCA.M Fri May 29 11:02:27 1998 GC#3 Page 2 B - 35 r Quantitation Report Data File : C:\HPCHEM\3\DATA.SEC\F04041.D Vial: 15 Acq On 5 Jun 1998 5 :31 am Operator: krl Sample : b805531-01 2 Inst : GC #5 ' Misc : s Multiplr: 1.00 IntFile : SURR.E Quant7ime: Jun 5 10:52 1998 Quant Results File: TPHD2 .RES . Quant 'Method : C:\HPCHEM\3\METHODS\TPHD2 .M (Chemstation Integrator) Title : TPH-D Rear Method Last Update : Wed May 27 20 :03 :14 1998 Response via : Multiple Level Calibration DataAcq Meth : TPHD.M ' , • Volume Inj . . Signal Phase : • Signal Info . Response_ ' F04041.D\FID2B • I I ! I ilI, - 950001 si u t 900001 I f f it i f q I I 1 • = I 850001 I II i I';! r ii I� • 1 800001 '� I 1 1+ • I I ! • 75000 700001 ' ' I i • ! 65000 i ! i • jI! ,` I ' 600001 L. i' 1liv� yr 55000� ' 50000 1 I, N 1 I • ! • 45000 ly �i k!Id 40000a Ii i I( • • i ,' j i35000 1 I 1 ! • 30000: I '� I . ( ' 25000 : i1r ' 1 • I L, 20000 i , ill ! 'l), i • I it I 15000= i • ' ' ! � • 1 __i 1000= I � i : i ,I i,. 1 i, ill a, 11 , :III II.;. I _I• • I 0;—_ -5000-' -l0000 1 o ' j O IW 0 3 O N N C • Time 0.00 2.00 4.00 6.00 8.00 10.00 12.00 14.00 16.00 18.00 , 20.00 22.00 24.00 26.00 28.00 1 ' F04041.D TPHD2.M Fri Jun 05 10 :52:34 1998 Page 2 13 - 36 Quantitation Report • • Data File : C:\HPCHEM\3\DATA\E27014 .D Vial : 11 Acq On : 27 May 1998 7 :08 pm Operator: krl Sample : b805531-01 Inst : GC #5 • Misc : s Multiplr: 1. 00 • IntFile : SURR.E Quant Time: May 28 15:48 1998 Quant Results File: NWTPHD.RES Quant Method : C:\HPCHEM\3\METHODS\NWTPHD.M (Chemstation Integrator) Title Northwest Front Method Last Update : Wed May 13 20 :51:15 1998 Response via : Multiple Level Calibration • DataAcq Meth : TPHD.M Volume Inj . • Signal Phase . Signal Info Response_ E27014.D\FIDIA I I i c m 7 1 i ii 95000 900001 g i 850001 I 80000, 75000- 70000- I i 65000- 60000- 55000- i 50000- 45000- 40000 • - 35000- 30000- 25000- 20000- 15000- ° IkCAI 10000- 5000II\A. '164\-4Ytt, 01 -5000 j - i -10000 I ® ixCDc b 2 d C pc cm M pQ �{ IL i s N C O =' Time 0.00 2.00 4.00 6.00 8.00 10.00 12.00 14.00 16.00 18.00 20.00 22.00 24.00 26.00 28.00 E27014.D NWTPHD.M Thu May 28 15:48 :13 1998 Page 2 B - 37 Quantitation Report. Data File : C:\HPCHEM\3\DATA.SEC\F04017.D Vial: 8 • Acq On : 4 Jun 1998 9:38 pm Operator: krl Sample : b805531-01 rl Inst : GC #5 Misc i : s Multiplr: 1.00 IntFile : SURR.E Quant ;'Time:• Jun 5 10 :50 1998 Quant Results File: TPHD2 .RES Quant1Method : C:\HPCHEM\3\METHODS\TPHD2 .M (Chemstation Integrator) • Title, • : TPH-D Rear Method Last Update Wed May 27 20:03 :14 1998 Response via : Multiple Level Calibration DataAiq Meth : TPHD.M Volume Inj . : _, Signal Phase : • • Signal Info : • Response_ F04017.D1FID2B d m r 95000 Y ' 90000 ; I I 85000- I • • 80000; i 75000- 70000 g y 650004 ! g 60000-' ;i i • 55000-, ti ' i. 50000-i • 45000 ? ' j 40000 ' ' . 35000• i i. • 30000. ! 25000 20000• I• ' ;', ilycil 15000 1 10000 I li14Y ,, •��. !�i Ff�.' III N ,X.�.1,,,__•-"-- v, I'41:1: . . ...h.• ---,Jill..I.�,., N 01 • -, -5000 • • U o t W § V O Time 0.00 2.00 4.00 6.00 8.00 10.00 12.00 14.00 16.00 18.00 20.00 22.00 24.00 26.00 28.00 !_ { ' F04017.D TPHD2.M Fri Jun 05 10:50:14 1998 Page 2 ' B - 38 Quantitation Report (Not Reviewed) Data File : C:\HPCHEM\3\DATA.SEC\F04017.D Vial: 8 Acq On 4 Jun 1998 9 :38 pm Operator: krl Sample : b805531-01 rl Inst : GC #5 - Misc : s Multiplr: 1.00 IntFile : SURR.E Quant Time: Jun 5 10 :50 1998 Quant Results File: TPHD2.RES Quant Method : C:\HPCHEM\3\METHODS\TPHD2 .M (Chemstation Integrator) Title : TPH-D Rear Method Last Update : Wed May 27 20:03 :14 1998 1 Response via : Initial Calibration ;h0^ DataAcq Meth : TPHD.M .f I G� �kjDk.`' , �D`1 11, rn /77 Volume Inj . Signal Phase : Signal Info . Compound R.T. Response Conc Units System Monitoring Compounds 1) S 2-Fluorobiphenyl 10.92 7738177 147.327 ug/mL 2) S Octacosane 18.40 7144482 133 .749 ug/mL Target Compounds 3) H Washington TPH-D 12.00 31557475 669.011 ug/mL � ( PP' 4) H Washington TPH-Dext 20.00 1335642 55.024 ug/mL 5) H Northwest TPH-D 13 .00 32567651 649.307 ug/mL 6) H Lube Oil Range 21.00 90188 5.021 ug/mL 7) H TPH C10 - C28 8.00 33971199 643 .909 ug/mL 8) H TPH C28 - C40 19.00 370992 22.372 ug/mL 9) H AK102 (DRO) 10.00 32112172 1787.752 ug/mL 10) H Montana TPH-D 9.00 32446384 1806.358 ug/mL 4 ' 11) H Total Extractable 14.00 34342191 648.249 ug/mL _ i r (f) =RT Delta > 1/2 Window g - 39 (m) =manual int. F04017.D TPHD2.M Fri Jun 05 10:50:13 1998 Page 1 ,-- Quantitation Report (Not Reviewed) • Data File C:\HPCHEM\3\DATA.SEC\F04039.D • Vial: 14 Acq On 5 Jun 1998 4:51 am Operator: krl Sample : b805531-01-dupl Inst : GC #5 Misc : s Multipir: 1.00 IntFille : SURR.E Quart Time: Jun 5 10:52 1998 Quant Results File: TPHD2 .RES Quant Method : C:\HPCHEM\3\METHODS\TPHD2.M (Chemstation Integrator) Title : TPH-D Rear •Method ' i 1 Last (Update : Wed May 27 20:03 :14 1998 Response via : Initial Calibration DataAcq Meth : TPHD.M - Volume Inj . . Signal Phase : Signal Info . • Compound R.T. Response Conc Units • • SystemMonitoring Compounds 1) S 2iFluorobiphenyl 10.93 9637887 183 .496 ug/mL 2) S • Octacosane 18.40 7448592 ` . 139.442 ug/mL Target Compounds 3) H Washington TPH-D 12.00 282940769 5998.279, ug/mL 4) H Washington TPH-Dext 20.00 5110450 210.532 ug/mL ' 5) H Northwest TPH-D ' 13.00 305856276 6097.910 ug/mL t_', 6) H Lube Oil Range 21.00 135607 7.550 ug/mL 7) H TPH C10 - C28 8.00 314364152 5958.636 ug/mL i- -, 8) H TPH C28 - C40 19.00 444754 26.821 ug/mL 9) H AK102 (DRO) 10.00 267351022 14883 .991 ug/mL - 10) H Montana TPH-D 9.00 293321580 16329.827. ug/mL 11) H Total Extractable 14.00 314808906 . 5942.390 ug/mL • • • • L ' I I ' i . ' (f)=RT Delta > 1/2 Window B - 40 (m) =manual int. • ' F04039.D TPHD2.M Fri Jun 05 10:52:16 1998 Page 1 Quantitation Report Data File : C:\HPCHEM\3\DATA.SEC\F04039.D Vial: 14 ' Acq On 5 Jun 1998 4:51 am Operator: krl Sample : b805531-01-dupl Inst : GC #5 r- Misc : s Multiplr: 1.00 IntFile : SURR.E Quant Time: Jun 5 10:52 1998 Quant Results File: TPHD2.RES Quant Method C:\HPCHEM\3\METHODS\TPHD2 .M (Chemstation Integrator) Title : TPH-D Rear Method Last Update : Wed May 27 20:03 :14 1998 Response via : Multiple Level Calibration DataAcq 'Meth : TPHD.M Volume Inj . , Signal Phase : Signal Info . Response_ F04039.D\FID2B j i 1''1!i `II i ,I 95000, ' I 900001 i :11 j I • ',I i " - 850001 1 1 • 1 80000; i I1:1 J j�'' • 75000, i I ' ;j( t 700001 ; • I 0 1 ; 1 1 , ° 650001 1 11, 600001 111! R L ' 5 55000 a I • 11. f. j • •500001 1 ' I li i; li 450001. 1 ; ii • 40000; I ; I / 35000; i j; 1; i,1I 1i 30000 i'� tp �I 25000 1 1 ` �) 1. • 20000- I 1 ti i. 'i jl 150001 j 1� 1 +y i 10000 1 I II gii1 5000 j '� 1 II 14 '.'• j I I; .1 'd '' o 0 Y -5000-1 -10000 0 • c w . I; °D • U g N P E C itN N C -, o U Time 0.00 2.00 4.00 6.00 8.00 10.00 12.00 14.00 16.00 18.00 20:00 22.00 24.00 26.00 28.00 F04039.D TPHD2.M . Fri Jun 05 1(P:52417 1998 Page 2 z4ad NORTH 18939►20th Avenue N.E..Suite 101. Bothell.WA 98011-9508 12_061481 9200 FAX 485-29922 • CREEK East 11115 Montgomery.Suite B. Spokane.WA 99206-4779 (5091924-9200 FAX 924-9290 ANALYTICAL - 9405 S.W.Nimhus Avenue. Beaver-um OR 97(8)8-7132 (50)MT 9200 FAX 644-2202_ INIIIIIIMME Environmental Laboratory Services CHAIN OF CUSTODY REPORT Work Order # 8 K 0 SS-S- l REPORT TO: INVOICE TO: /�/ /��/� (/'r ) (/ v� .End TURNAROUND REQUEST in Business Days• A ITENlION: (/ot�'! L 6l l C�-1 `(, `1 1�\.� E, y'i VtJ ATTENTION: Organic&Inorganic Analyses (J IU 7 5 4 3 2 I s�m� tr, Ki ADDRESS: l ID 1 !� N�J ADDRESS: - 11 Stamlud • ,"'.'� (AAA- 4 V '�� Fuels&Hydrocarbon Analyses �/J /�/� r rA �<- � same PHONE: Le2re j (4., 'i"t6i) FAX: `� �aWl�j0 P.O.NUMBER: Nj 11U0'IEII: tai 3-� 2 I tom) PROJECT NAME: C) .. AnalysisI U Request:/0.7<14/147ry I PROIEC"i Nl1R1BER: O� �1.�'(~00 L._.��zJ o•rIIERsett,. •Tarnuntund Rr juv'ts less than,t,mrlarJ mar innv Ru,h Chn,grs. SAFIPLED BY: �CLIENT SAMPLE �� SAMPLING NCA SAMPLE ID St .4 . MATRIX II OF IDENTIFICATION DAlIIFIME _Ilaharal sy Use Only) _ 1 W.S.A.0) CONTAINERS COMMENTS 1. • W-y i - is, S -CZ.--4q Sci'0.5531 as X1 s _ As-4- 13, 5 s,22-4k - 0 I .)4... 5, ( c.i • - „NA)-c(•3 - I20't` _ ;zZ-`i — — 6 l\ . 1 . _� 0. C- ft 7. N. 9. _ • In. q' - — - Iy ti L "1-1 . /20 9 DATE 2f 1 L' RELINQUIS :DBl'i.o,,.a,o. �� / DATE: ` RC•CEIVEDDYtst,a,ao.n: [0 PRINT NAME: I.�1r 1 U,� SvINO.�t=y—" FIRM: G��-_�— l7ME: /0 6 6j PRINT NAME: b /�� FIRM: A/C4— TIME: /'32...0 REI.INQUISIIED BY.s.ma.o.. DATE RECEIVED BYrss...,e DATE: PRINT NAME: FIRM: ,,[/•I OS PRINT NAME: ! ) p��p. 1 /FIRM: .• TIME: 'ADDI f•IONAI-REMARKS:- Cl/r •""' 4" I ri Lei •,1 -s- tee S St 6 l V 1 �/✓� l if e d�' tc 9._d_ (.4 C.�•,,\, ,'1'Y,,,.. l,A• / • 1 /J L!1 �r/�� V rr v' "�J `� ntNI!� V pH--e., PAGE .. .I.,A rw —J�L �1i • J _ __ L . ---- I— i`_ .� . ..-I. ()IL- ._ ,. "__�I • NORTH �' CREEK • ANALYTICAL CAL BOTHELL • '(425)481-9200 • FAX 485-2992 � SPOKANE • (509)924-9200 • FAX 924-9290 Environmental Laboratory Services PORTLAND • (503)906-9200 ■. FAX 906-9210 Geo Engineers-Redmond Project: OLYMPIC PIPELINE CO- Sampled: 6/3/98 8410 154th Ave NE Project Number: 0894-002-00 Received: 6/4/98 Redmond.WA 98052 Project Manager: Dana Carlisle Reported: 6/11/98 15:00 ANALYTICAL REPORT FOR SAMPLES: Sample Description Laboratory Sample Number Sample Matrix Date Sampled MW-18 B806102-00 Water 6/3/98 MW-19 B806102-01 Water 6/3/98 MW-20 B806102-02 Water 6/3/98 MW-38 B806102-03 Water 6/3/98 GeoEngineers JUN 1 6 1998 Routing ....... J File • • North Creek Analytical,Inc. The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. B - 43 Joy B C ang, r ct M er • 18939120th Avenue N.E.,Suite 101,Bothell,WA 98011-9508 Page 1 of b, East 11115 Montgomery,Suite B.Spokane,WA 99206-4776 9405 S W Nimhnc Avnnnn Rowrrtnn OR 97008-7139 • - NORTH 41 CREEK ANALYTICAL BOTHELL •"(425)481-9200 • FAX 485-2992 SPOKANE • (509)924-9200 • FAX 924-9290 Environmental Laboratory Services PORTLAND • (503)906-9200 • FAX 906-9210 Geo Engineers-Redmond Project: OLYMPIC PIPELINE CO- Sampled: 6/3/98 _• 8410 154th Ave NE Project Number: 0894-002-00 Received: 6/4/98 Redmond. WA 98052 Project Manager: Dana Carlisle Reported: 6/11/98 15:00 i Gasoline Hydrocarbons(Toluene to Dodecane)and BTEX by WTPH-G and EPA 8021B North Creek Analytical-Bothell Batch Date Date Surrogate Reporting Analvte Number Prepared Analyzed Limits Limit Result Units Notes* 1 JVMW-18 )3806102-00 Water Gasoline Range Hydrocarbons 0680179 6/5/98 6/5/98 50.0 1580 ug/I Benzene 6.00 ND 1 (-- Toluene 1.50 ND " 1 E• thylbenzene 0.500 20.3 " J Xylenes(total) 1.00 57.1 " __ Surrogate: 4-BFB(FID) II II II50.0-I50 156 % 2 i Surrogate: 4-BFB(PID) I, . II50.0-150 121 N1W-19 B806102-01 Water - G• asoline Range Hydrocarbons 0680179 6/5/98 6/6/98 250 2650 ug/1 Benzene 2.50 18.6 " Toluene 2.50 2.69 " - Ethylbenzene 2.50 71.5 " Xylenes(total) 5.00 215 " S• urrogate: 4-BFB(FID) II II II50.0-150 115 Surrogate: 4-BFB(PID) II II II 50.0-150 118 " 1 M W-20 1 $806102-02 Water Gasoline Range Hydrocarbons 0680179 6/5/98 6/5/98 " 100 1320 ug/1 Benzene. 7.00 ND 1 Toluene 2.00 ND 1_ Ethylbenzene " " i 1.00 15.0 " __ Xylenes(total) II II2.00 46.0 " Surrogate: 4-BFB(FID) " 50.0-150 111 % _ Surrogate: 4-BFB(PID) 50.0-150 106 " MW-38 I $806102-03 Water Gasoline Range Hydrocarbons 0680179 6/5/98 6/6/98 50.0 115 ug/1 - Benzene 0.500 1.17 " Toluene " 0.500 ND " Ethylbenzene • 0.500 0.558 Xylenes(total) II II tt1.00 2.46 " Surrogate: 4-BFB(FID) 50.0-150 109 % Surrogate: 4-BFB(PID) II II II 50.0-150 107 " 1 I North Creek Analytical,Inc. *Refer to end of report for text of notes and definitions. • B - 44 Joy B Cha ,P oje 1 Mana 18939 120th Avenue N.E.,Suite 101.Bothell,WA 98011-9508 Page 2 of 6 ' East 11115 Montgomery,Suite B.Spokane.WA 99206-4776 1' 9405 S.W.Nimbus Avpnnr Rnwnrtnn f1R 97008-7132 zNitNORTH l CREEK ANALYTICAL CAL BOTHELL ■-(425)481-9200 ■ FAX 485-2992 SPOKANE ■ (509)924-9200 ■ FAX 924-9290 _ Environmental Laboratory Services PORTLAND • (503)906-9200 • FAX 906-9210 Geo Eneineers-Redmond Project: OLYMPIC PIPELINE CO- Sampled: 6/3/98 8410 154th Ave NE Project Number: 0894-002-00 Received: 6/4/98 Redmond.WA 98052 Project Manager: 'Dana Carlisle Reported: 6/11/98 15:00 Diesel Hydrocarbons(C12-C24) by WTPH-D North Creek Analytical-Bothell Batch Date Date - Surrogate Reporting Analyte Number Prepared Analyzed Limits Limit Result Units Notes* I MW-18 0806102-00 Water Diesel Range Hydrocarbons 0680183 6/5/98 6/10/98 0.250 23.9 mg/1 Surrogate: 2-FBP If II II 50.0-150 137 % MV-19 B806102-01 Water Diesel Range Hydrocarbons 0680183 6/5/98 6/11/98 1.25 30.6 mg/1 Surrogate: 2-FBP 50.0-150 139 % MW-20 D806102-02 Water Diesel Range Hydrocarbons 0680183 6/5/98 6/10/98 0.250 1.85 mg/1 _ Surrogate: 2-FBP " 50.0-150 98.3 MW-38 33806102-03 Water Diesel Range Hydrocarbons 0680183 6/5/98 6/10/98 0.250 1.60 mg/1 Surrogate: 2-FBP " " " 50.0-150 108 %. • • i • North Creek Analytical,Inc. *Refer to end of report for text of notes and definitions. - B - 45 Joy B Cha .P oje Man et Page 3 of 6 /)\ • 18939 120th Avenue N.E.,Suite 101,Bothell,WA 98011-9508 East 11115 Montgomery,Suite B,Spokane,WA 99206-4776 9405 S W Nimhne Avonno Rnrmortnn f1R 97f108-7137 - • NORTH •- 4 CREEK t • A ANALYTICAL SPOKANE • (509)924-9200 • FAX 924-9290 IIIMININIIIIMI Environmental Laboratory Services PORTLAND • (503)906-9200 • FAX 906-9210 • Gco Engineers-Redmond Project: OLYMPIC PIPELINE CO- Sampled: 6/3/98 L--' 8410 154th Ave NE Project Number: 0894-002-00 Received: 6/4/98 Redmond,WA 98052 Project Manager: Dana Carlisle Reported: 6/11/98 15:00 Gasoline Hydrocarbons(Toluene to Dodecane)and BTEX by WTPH-G and EPA 8021E/Quality Control North Creek Analytical-Bothell Date Spike Sample QC Reporting Limit Recov. RPD RPD -� Analyte Analyzed Level Result Result Units Recov.Limits % Limit % Notes* Batch: 0680179 Date Prepared: 6/5/98 extraction Method: EPA 5030B(P/T1 ' Blank 0680179-BLKI Gasoline Range Hydrocarbons 6/5/98 ND ugh 50.0 Benzene ND 0.500 Toluene iiND 0.500 Ethylbenzene " ND 0.500 -- Xylenes(total) " ND 1.00 Surrogate: 4-BFB(FID) n48.0 50.0 50.0-150 104 - Surrogate: 4-BFB(P1D) n48.0 51.3 50.0-150 107 - LCS 0680179-BSI Gasoline Range Hydrocarbons 6/5/98 500 504 ugh 70.0-130 101 Surrogate: 4-BFB(FID) II48.0 58.9 50.0-150 123 Duplicate 0680179-DUP1 )3806104-00 - Gasoline Range Hydrocarbons 6/5/98 2270 2140 ug/l 1 25.0 5.90 Surrogate: 4-BFB(FID) II48.0 54.8 50.0-150 114 Matrix Spike 0680179-MS1 B806102-03 Benzene 6/6/98 10.0 1.17 12.8 ug/1 70.0-130 116 - Toluene 10.0 • ND 11.8 " 70.0-130 118 Ethylbenzene " Y 10.0 0.558 11.0 70.0-130 104 Xylenes(total) 30.0 2.46 33.3 ." 70.0-130 103 - Surrogate: 4-BFB(PID) n48.0 52.8 50.0-I50 110 Matrix Spike Dup 0680179-MSD1 13806102-03 Benzene 6/6/98 10.0 1.17 12.6 ug/l 70.0-130 114 15.0 1.74 Toluene 10.0 ND 11.5 , " 70.0-130 115 15.0 2.58. Ethylbenzene ii10.0 0.558 11.2 " ' 70.0-130 106 15.0 1.90 Xylenes(total) 30.0 2.46 33.9 " 70.0-130 105 15.0 1.92 - Surrogate: 4-BFB(ND) II 48.0 53.6 " 50.0-150 112 • _ North Creek Analytical,Inc. *Refer to end of report for text of notes and definitions. B - 46 Joy B Cha g, oje Manag r/ 18939 120th Avenue N.E.,Suite 101,Bothell.WA 98011-9508 Page 4 of 6 , ` East 11115 Montgomery,Suite B.Spokane,WA 99206-4776 oar?E S W Nimbus AvenIi? Ron wort, nip o7nnA-7132 NORTH * 441 CREEK BOTHELL • (425)481-9200 • FAX 485-2992 ANALYTICAL SPOKANE • (509)924-9200 ■ FAX 924-9290 = Environmental Laboratory Services PORTLAND • (503)906-9200 • FAX 906-9210 Geo Engineers-Redmond Project: OLYMPIC PIPELME CO- Sampled: 6/3/98 8410 154th Ave NE Project Number: 0894-002-00 Received: 6/4/98 Redmond.WA 98052 Project Manager: Dana Carlisle Reported: 6/11/98 15:00 Diesel Hydrocarbons(C12-C24)by WTPH-D/Quality Control North Creek Analytical-Bothell Date Spike Sample QC Reporting Limit Recov. RPD RPD Analyte Analyzed Level Result Result Units Recov.Limits % Limit % Notes* Batch: 0680183 pate Prepared: 6/5/98 Extraction Method: EPA 3520C/600 Series Blank 0680183-BLK1 Diesel Range Hydrocarbons 6/10/98 ND mg/I 0.250 Surrogate: 2-FBP 0.320 0.299 " 50.0-150 93.4 L,CS 0680183-BSI Diesel Range Hydrocarbons 6/10/98 2.00 1.78 mg/1 60.0-140 89.0 Surrogate: 2-FBP 0.320 0.289 " 50.0-150 90.3 Duplicate 0680183-DUPN D806102-00 Diesel Range Hydrocarbons 6/10/98 23.9 15.9 mg/I 44.0 40.2 Surrogate: 2-FBP 0.605 0.732 " 50.0-150 121 • North Creek Analytical,Inc. *Refer to end of report for text of notes and definitions., B - 47 Joy B Cha ,Pr je anag Page 5 of E, 18939 120th Avenue N.E.,Suite 101,Bothell,WA 98011-9508 East 11115 Montgomery,Suite B,Spokane,WA 99206-4776 adn5 S W Nimbus Avenue Rna„o.tnn na a7nns-71'39 • - NORTH •;• 41 CREEK 11111111 ANALYTICAL SPOKANE • (509)924-9200 ■ FAX 924-9290 Environmental Laboratory Services PORTLAND • (503)906-9200 • FAX 906-9210 Geo Engineers-Redmond Project: OLYMPIC PIPELINE CO- Sampled: 6/3/98 - 2 8410 154th Ave NE Project Number: 0894-002-00 Received: 6/4/9,8 Redmond,WA 98052 Project Manager: Dana Carlisle Reported: 6/11/98 15:00 Notes and Definitions • # Note 1 The reporting limit for this analyte has been raised to account for interference from coeluting organic compounds present in the sample. l " 2 The surrogate recovery for this sample cannot be accurately quantified due to interference from coeluting organic compounds present:in the sample. DET Aalyte DETECTED ND Aalyte NOT DETECTED at or above the reporting limit NR Not Reported - dry Sample results reported on a dry weight basis Recov. Recovery RPD Relative Percent Difference --I • • • • _ North Creek Analytical,Inc. • B - 48 Joy B Chan ,Pr jec Man r • 18939 120th Avenue N.E.,Suite 101,Bothell,WA 98011-9508 Page 6 of 6 East 11115 Montgomery,Suite B,Spokane,WA 99206-4776 • r I Pam R Utz hlimh,,e Bvonl n Roaunrtnn f1R Q7nnR-7119 - Quantitation Report Data File : C:\HPCHEM\l\DATA.SEC\F09071.D Vial: 29 Acq On : 10 Jun 1998 1:17 pm Operator: NJA Sample : b806102-00 Inst : GC #1 Misc Multiplr: 1.00 IntFile : SURR.E Quant Time: Jun 11 10 :00 1998 Quant Results File: TPHD2 .RES Quant Method : C:\HPCHEM\l\METHODS\TPHD2 .M (Chemstation Integrator) Title • : TPH-D Rear Method Last Update : Wed Jun 10 10 :56 :19 1998 Response via : Multiple Level Calibration DataAcq Meth : TPHD.M Volume Inj . . Signal Phase : ., Signal Info : Response_ F09071.D\FID2B j lil ,!il' IIl c I 71 95000 i i I j ,! I II 1 I NIi �I 90000 III 85000� I ! 1 80000� j i I � 75000- • 1 j ! ! 1 li . 70000, 1 19 I' 65000 60000 i I iI 55000- I ' I ! II 50000{ , i\ , , 45000 - 40000- 35000 30000- 25000- \I . ' 20000 I I \I 15000- i I 10000 II it V U 0• - j -5000 1 I d 0 e m 11 o I; O a m kS m co U m cmo r • "IV 8 f 6 _ � Yq ro a § Time 0.00 2.00 4.00 6.00 8.00 10.00 12.00 14.00 16.00 18.00 20.00 22.00 24.00 26.00 28.00 F09071.D TPHD2.M Thu Jun 11 10 :1074V) 1998 GC#3 Page 2 I • I Quantitation Report 1 Data File : C:\HPCHEM\4\DATA.SEC\F11007.D Vial : 81 Acq On : 6-11-98 10 :31:30 AM Operator: ajg Sample : B806102-,01R1 Inst : GC #7 Misc 1 : 5X Multipir: 1.00 IntFile : SURR.E . Quant' Time: Jun 11 10 :54 1998 Quant Results File: TPHD2 .RES Quantl! Method : C:\HPCHEM\4\METHODS\TPHD2 .M (Chemstation Integrator) Title! : TPH-D Rear Method -° Last Update : Wed Jun 10 05 :02 :02 1998 Response via : Multiple Level Calibration - DataAcq Meth : TPHD.M Volume Inj . Signal Phase ' : Signal Info Response_ �, F11007.D\FID2B I ' it m 1 95000001 1 i1 9000000- i 1 8500000 1 II I j 80000001 75000001 { i i 6500000- ; i i, 1 I 1 illri 6000000- t5500000 i 50000001 ji 4500000- • k o I :I4000000- , I o 3500000I ' 3000000- M I 2500000- • 2000000I 1 1500000- ,I i \\I\ . 1000000 it • i Il 500000 y I,�p jl i iyiii • � fl ,� ili . -500000 i 10000001 . z o c a m 0 m 6e H m �_ I 5 U O r N m M L 8 V O N O O W Time I 1.00 2.00 3.00 4.00 5.00 6.00 7.00 8.00 9.00 10.00 11.00 12.00 13.00 14.00 15.00 F11007.D TPHD2 .M Thu Jun 11 10:55:09 1998 Page .2 B - 50 Quantitation Report , i Data File : C:\HPCHEM\1\DATA.SEC\F09075.D Vial: 31 Acq On : 10 Jun 1998 2 :35 pm Operator: NJA Sample : b806102-02 Inst : GC #1 Misc Multiplr: 1.00 IntFile : SURR.E Quant Time: Jun 11 10 :02 1998 Quant Results File: TPHD2 .RES Quant Method : C:\HPCHEM\l\METHODS\TPHD2 .M (Chemstation Integrator) Title : TPH-D Rear Method Last Update : Wed Jun 10 10 :56 :19 1998 Response via : Multiple Level Calibration 1 DataAcq Meth : TPHD.M Volume Inj . Signal Phase : Signal Info Response_ F09075.D\FID2B o co 950001 i 900001 ' 1 ! 85000- 80000- 1 750001 p�700001 65000- 1 I' 60000- 55000 50000- • 45000- ' 40000 35000 { I� 'Ii I I II, 30000- I 25000- 11 ' 20000- l.` r �� N 15000; '1 , 4 10000 , ,p 1 I y' I ` ___, 5000- v 1^µ �J rn.0,JI _J 1-..�____� 0- • -5000 • 1111 a 2 _ c m F -g c . K o m � a a w m � 5 5 a o s 8 U 1 O a c c a :c x a 'Time 0.00 2.00 4.00 6.00 8.00 10.00 12.00 14.00 16.00 18.00 20.00 22.00 24.00 26.00 28.00 F09075.D TPHD2 .M Thu Jun 11 10:02:21 1998 GC#3 Page 2 B - 51 Quantitation Report Data File : C:\HPCHEM\1\DATA.SEC\F09079.D Vial : 32 Acq Op : 10 Jun 1998 4 :03 pm Operator: NJA Sample : b806102-03 Inst : GC #1 Misc Multiplr: 1.00 • IntFile : SURR.E Quant Time: Jun 11 10 :03 1998 Quant Results File: TPHD2 .RES Quant Method : C:\HPCHEM\1\METHODS\TPHD2 .M (Chemstation Integrator) Title, : TPH-D Rear Method Last Update : Wed Jun 10 10 :56 :19 1998 Response via : Multiple Level Calibration DataAcq Meth : TPHD.M Volume Inj . . Signal Phase : Signal Info . Response_ F09079.D\FID2B o ao 95000I 90000- 85000- 80000- 75000 70000- 65000- 60000- 55000- I_ I 50000- i 45000- I I i I 40000- 35000- 30000- Cr • 25000- I 111 20000- 15000- �I rn 10000 5000 � ' V 0- I 1 -5000- — g U 8 .) N L CC23 � O � � p. n Time 0.001 2.00 4.00 6.00 8.00 10.00 12.00 14.00 16.00 18.00 20.00 22.00 24.00 26.00 28.00 F09079.D TPHD2.M Thu Jun 11 10:03 :16 1998 GC#3 Page 2 B - 52 Quantitation Report Data File : C:\HPCHEM\3\DATA\060598\F05032.D\FID1A.CH Vial: 32 Acq On 5. Jun 1998 11:02 pm Operator: mam Sample : b806102-00 rl Inst : GC #6 Misc : 5 mL Multiplr: 1.00 IntFile : SURR.E . Data File : C:\HPCHEM\3\DATA\060598\F05032.D\FID2B.CH Vial : 32 I , Acq On 5 Jun 98 11:02 pm Operator: mam Sample : b806102-00 rl Inst : GC #6' Misc : 5 mL Multiplr: 1.00 IntFile : SURR2.E Quant Time: Jun 8 8 :10 1998 Quant Results File: TPHG.RES Quant Method : C:\HPCHEM\3\METHODS\TPHG.M (Chemstation Integrator) Title : TPH-G Water Method Last Update : Tue May 26 12 :06:08 1998 Response via : Multiple Level Calibration DataAcq Meth : TPHG.M Volume Inj . .• Signal #1 Phase : • Signal #2 Phase: Signal #1 Info Signal #2 Info : ,_ Response_ F05032.D1FID1A I r II I.� ►!11 I I1 Ij 11 I► Ii ill Iiil.41 II 1 I• I i114 ` 30000-I III II, I II ! l;l II 1 I I 25000' I'� i I I I I I , II i it I ! II . II li I I I •20000 a !' I I I I 1 I 150007 II IiI II I I 10000 1 ill ,I' I ljk Yt" es c 3 co LI- !me 0.00 2.00 4.00 6.00 8.00 10.00 12!00 14.00 16.00 18.00 20.00 22.00 Response_ F05032.D'.FID2B a a ai , w R 140000- . 120000" id a 100000 80000 1 � 'I.! I • I I II • I I I I 60000; I! I i il. Ii ll III . 11 ;I ;; 1 1410 • 40000j gII !; 'II ' ;I I1 I' III! , I Ir ' I1 I I • i 20000; a : !I m I I ti i t ti I I ,HILT ' Iyi II +i ,i� as 4 toS g g m € I J{ coyy v S a owAtz Time 0.00 2.00' 4.00 '6.00 8.00 10.00 12.00 14.00 16.00 18.00 20.00 22.00 F05032.D TPHG.M Mon Jun 08 08:11.01 1598 Page. 2 I B - 53 Quantitation Report I— Data File : C:\HPCHEM\3\DATA\060598\F05037.D\FID1A.CH Vial: 37 Acq On 6 Jun 1998 1:31 am Operator: mam Sample : b806102-01 rl Inst : GC #6 Misc. : 1 mL Multiplr: 5.00 IntFile : SURR.E Data 'File : C:\HPCHEM\3\DATA\060598\F05037.D\FID2B.CH Vial: 37 L . Acq On 6 Jun 98 1:31 am Operator: mam Sample : b806102-01 •rl Inst : GC #6'' Misc : 1 mL Multiplr: 5.00 IntFile : SURR2.E • Quant] Time: Jun 8 8 :11 1998 Quant Results File: TPHG.RES ' Quant1 Method : C:\HPCHEM\3\METHODS\TPHG.M (Chemstation Integrator) 1 Title : TPH-G Water Method Last Update : Tue May 26 12 :06 :08 1998 ;— Response via : Multiple Level Calibration i DataAcq Meth : TPHG.M , Volume Inj . • l Signal #1 Phase : Signal #2 Phase: Signal #1 Info : Signal #2 Info : • Response_ F05037.D1FID1A . n o if 35000 1 1 i i 30000 i ! I250001 i 1 l • ' . 20000 a i I J II I ' 15000 j 10000 • 5000 y J ''J di\-AnA\--.,---&_ { ' x x F o 1 0 m - is m ` a m a N C€ 4 gi m :Time 0.00 2.00 4.00 6.00 8.00 10.00 12.00 14.00 16.00 18.00 20.00 22.00 esponse_ F05037.D1FID2B , es es 140000 . • 120000• 1000001 1 • { 80000 i i • n m �� r- • 600001 — I II ! . • 40000 a j i k!' ii i ii i� I I 44H-4 - - 1 W20000; , ^a o g` g . m Time 0.00 .2.00 4.00 . 6.00 8.00 10.00 12.00 14.00 16.00 18.00' 20.00 22.00 F05037.D TPHG.M Mon Jun 08 08:11:4551998, Page 2 Quantitation Report Data File : C:\HPCHEM\3\DATA\060598\F05031.D\FID1A.CH Vial : 31 Acq On 5 Jun 1998 10 :32 pm Operator: mam Sample : b806102-02 dup Inst : GC #6 Misc : 2.5 Multiplr: 2 .00 IntFile : SURR.E Data File : C:\HPCHEM\3\DATA\060598\F05031.D\FID2B.CH Vial: 31 Acq On 5 Jun 98 10 :32 pm Operator: mam Sample : b806102-02 dup • Inst : GC #6 ' Misc : 2 .5 Multiplr: 2.00 IntFile : SURR2.E Quant Time: Jun 8 8 :10 1998 Quant Results File: TPHG.RES Quant Method : C:\HPCHEM\3\METHODS\TPHG.M (Chemstation Integrator) 1 Title : TPH-G Water Method . Last Update : Tue May 26 12 :'06 :08 1998 Response via : Multiple Level Calibration DataAcq Meth : TPHG.M Volume Inj . .• Signal #1 Phase : Signal #2 Phase: j Signal #1 Info Signal #2 Info : i , Response_ :-Ti F05031.D1FID1A I 11.1 ! i 35000 1 II 'I I 1 • 30000. i� i I 1 I I • 1 . I II 1 fil h ' 25000 i I i l i • 20000 Il I II'/ ' 11 F i I 1 150001 i ' i j I l0000j 1 II I I I 50001 i 1 AIi -� J j i. �" .11 4 g Time 0.00 2.00 4.00 6.00 8.00 10.00 12.00 14.00 16.00 18.00 20.00 22.00 Response_ F05031.D1FID2B 140000 i 1200001 i I loom m a 80000 { 60000 I I ` ;i ! iI I 17i . i i I Ill f1 11 l I li ill 20000 ! ;, 11 II i .;, 3! 1 11 ii IA �, I N i m 'i N ' I i o COCL a ' o g o • g I a gs. m • q m F- W F 6 t • • I Time 0.00 2.00 4.00 6.00 8.00 10.00 12.00 14.00 16.00 18.00 20.00 22.00 F05031.D TPHG.M Mon Jun 08 08:10BS251998 Page 2 i Quantitation Report L_ Data1File : C:\HPCHEM\3\DATA\060598\F05038.D\FID1A.CH Vial : 38 Acq On 6 Jun 1998 2:01 am Operator: mam Sample : b806102-03 rl Inst : GC #6 . Misc : 5 mL Multiplr: 1.00 IntFile : SURR.E . DatallFile C:\HPCHEM\3\DATA\060598\F05038 .D\FID2B.CH Vial: 38 Acq On 6 Jun 98 2:01 am Operator: mam Sample : b806102-03 rl Inst : GC #6' Misc ' :' 5 mL Multiplr: 1.00 j IntFile : SURR2.E Quant Time: Jun 8 8 :11 1998 Quant Results File: TPHG.RES II Quant Method : C:\HPCHEM\3\METHODS\TPHG.M (Chemstation Integrator) G Title : TPH-G Water Method Last ,Update : Tue May 26 12 :06:08 1998 Response via : Multiple Level Calibration 1 DataAcq Meth : TPHG.M Volume Inj . 1 Signal #1 Phase : Signal #2 Phase: , Signal #1 Info Signal #2 Info : Response_' F05038.DWID1A wi cd • 'i 1 35000{ II 1 II 30000 11 i i • • i 25000 . 11 1I i 200001; j l 1, ___ 1 150001 100001 I 5000- tti � I l)14 li . AL. 1_AA n ik _!lk,/ .,n.. s-„.,,.,_ ___Ak. /, `-tip e of • CC a' ea G O G coa a • [Time 0.00 2.00 4.00 6.00 8.00 10.00 12.00 14.00 16.00 18.00 20.00 22.00 I I esponse_ F05038.D\FID2B ed 140000 1I 120000 11os 1000001 • a I 80000,I l 1 60000;; 1 !I n i I _ 400001• iI ,; ti jl a 20000; 114 I mL. o a g a 1- Time 0.00 2.00 4.00 6.00 8.00 10.00 12.00 14.00 16.00 18.00 20.00 22.00 F05038.D ITPHG.M Mon Jun 08 08:11:53561998 Page 2 Z,4.i NORTH 18939 120th Avenue N.E..Suite 101, Bothell,WA 98011-9508 (206)481 9200 FAX 485-2992 CREEK East I I I IS Montgomery,Suite B. Spokane.WA 99206-4779 (509)9241-9200 FAX 924-9290 ANALYTICAL 9405 S.W.Nimbus Avenue. Beaverton.OR 97008-7132 (503)6 13 9200 FAX 64-1-2202 11111111111111 Environmental Laboratory Services . CHAIN OF CUSTODY REPORT Work Order # /6 9°1'/(2� REPORT TO: C Ipn/ t g L g- INVOICE TO: CO �J V� �� TURNAROUND REQUEST in Business Days• ATTENTION:/C E 0 F/NCa IA,/✓P.:K S • ATTENTION: Organic&Inorganic Analyses ADDRESS:: �f-I I 0 I S1j"1, nu e / - ADDRESS: El 7 5 4 3 2 I may` 1'LF�-01WV� c--) "18-d5� • St,�� ,, Fir�Is&Hydrocarbon Analyses PHONE:02 J, 1r&I—60DO FAX: C�s) b/6I (j ,s a P.O.NUMBER: NCA QUOTE#: RI El 2 I U+> PROJECT NAME: 0Lyili P IC 101 P I. L IN T Analysis k `� a��(/ 0�2 Request: ;'( �j4� OTHER PROJECT NUMBER: [ \ spa ry: �/� �p 1/1/�" / / i, SAMPLED BY: 0 n-V Y / G; •/,`+ ✓e- - , �1� •Turnaround Requests less than standard;nay incur Rush Charges. CLIENT SAMPLE SAMPLING NCA SAMPLE ID MATRIX It OF IDENTIFICATION DATEFIIME (Laboratory Use Only) 1 W.S.A.0) CONTAINERS COMMENTS m 1,-- -( S' ON r r5f(s ri .6-z -( ?C � v./ 3 2 141 t-- -1 ci cf3/: 133o -01 ( NI,/ . 3 I , " v"1 +"- — -0 Ef3Jir i, r -42_ ?� w 3 4. kV)L.-.— 3 r G13/96' Id GS -f X ?‹. yv _ 3 S. 1 6. 7. 8. 10 0 • 9. I0. RELINQUISHED BY/sr.... DATE:K PT( RECEIVED BYtss•a.nc / •j(LJ`� Cj(,..� D'�T� �'�i4K PRINT NAME: V &I.0 13 IrJ v�4 Ali 1 FIRM: \// F V TIME: t 3 U PRINT NAME: { �� _7 Kz 1 FIRM: j.\I( /,j TIME: L f c a RELINQUISHED BYtsip ...c DATE: RECEIVED BYts,.ea.ne / , DATE: PRINT NAME: FIRM: TIME: PRINT NAME: FIRM: TIME: ADDITIONAL REMARKS: , - ' , 4 i k\I C,,..C" ,., PAGE 1 OF ( f 1 1 4_ NORTH • •- '.`. .Pal CREEK • \- *` ANALYTICAL SPOKANE • (509)924-9200 • FAX 924 9290 Environmental laboratory Services PORTLAND ■ (503)906-9200 • FAX 906-9210 Geo Engineers-Redmond Project: OLYMPIC PIPELINE CO- Sampled: 6/5/98 8410 154th Ave NE Project Number: 0894-002-00 Received: 6/8/98 Redmond,WA 98052 Project Manager: Dana Carlisle Reported: 6/15/98 14:04 ANALYTICAL REPORT FOR SAMPLES: • Sample Description Laboratory Sample Number Sample Matrix Date Sampled MW-18 B806162-00 Water 6/5/98 -- MW-19 B806162-01 Water 6/5/98 MW-20 B806162-02 Water 6/5/98 MW-38 B806162-03 Water 6/5/98 GeoEngineers JUN 1 6 1998 Routing 8 File """ • • North Creek Analytical,Inc. The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. Aid - Joy B Chan: 'ro act'anager- B — 58 Page 1 of 6 • • 18939 120th Avenue N.E.,Suite 101,Bothell,WA 98011-9508 East 11115 Montgomery,Suite B,Spokane,WA 99206-4776 9nn C IA/ Alimhnc Avonnn Rnn..n.fnn nD n7nfQ_7l ) q_ NORTH ,,, .r :.,:.41 CREEK ANALYTICAL SPOKANE •(509)924-9200 • FAX 924-9290 ' Environmental Laboratory Services PORTLAND • (503)906-9200 • FAX 906-9210 'Geo Engineers-Redmond Project: OLYMPIC PIPELINE CO- Sampled: 6/5/98 8410 I54th Ave NE Project Number: 0894-002-00 . Received: 6/8/98 • Redmond.WA 98052 Project Manager: Dana Carlisle Reported: 6/15/98 14:04 Gasoline Hydrocarbons(Toluene to Dodecane)and BTEX by WTPH-G and EPA 8021B --. North Creek Analytical-Bothell Batch Date Date Surrogate Reporting Analyte Number Prepared Analyzed Limits Limit Result Units Notes* MW-18 B806162-00 Water , Gasoline Range Hydrocarbons 0680271 6/9/98 6/10/98 100 4160 ug/1 1 Benzene 10.0 ND " 2 Toluene 3.00 ND 2 Ethylbenzene II II " 1.00 36.7 " Xylenes(total) 2.00 104 " Surrogate: 4-BFB(FID) II II II 50.0-150 - 152 % 3 - Surrogate: 4-BFB(PID) II II II 50.0-150 129 " NJW-19 )3806162-01 Eale,1 — Gasoline Range Hydrocarbons 0680271 6/9/98 6/9/98 5000 289000 ug/1 1 Benzene 100 ND 2 ' Toluene " II 50.0 ND " Ethylbenzene 350 ND " 2 Xylenes(total) u II II 1000 ND 2 Surrogate: 4-BFB(FID) II II II 50.0-150 159 % 3 Surrogate: 4-BFB(PID) II II II 50.0-150 116 " MW-20 )3806162-02 Water Gasoline Range Hydrocarbons 0680271 6/9/98 6/9/98 50.0 4980 ugh 1 Benzene " 20.0 ND 2 1 Toluene 10.0 ND " 2 _ Ethylbenzene II II II 0.500 34.8 " Xylenes(total) II II II 1.00 96.7 " — Surrogate: 4-BFB(FID) II II " 50.0-150 NR % 3 Surrogate: 4-BFB(PID) II II " 50.0-150 147 " MW-38 B806162-03 Water Gasoline Range Hydrocarbons 0680271 6/9/98 6/10/98 50.0 760 ug/1 1 Benzene " II 6.00 ND " 2 Toluene " II 1.50 ND " 2 Ethylbenzene II " II 3.00 ND 2 Xylenes(total) II II " 6.00 ND 2 Surrogate: 4-BFB(FID) II II II 50.0-150 129 % -- Surrogate: 4-BFB(PID) II II II 50.0-150 115 " North Creek Analytical,Inc. *Refer to end of report for text of notes and definitions. 1 Joy B Chan ,Pro ect anager B — 59 Page 2 of 6 _ 18939 120th Avenue N.E.,Suite 101,Bothell,WA 98011-9508 East 11115 Montgomery,Suite B,Spokane,WA 99206-4776 ' . 44n5 S W Alimhnc A'nnnn Rnawnrfnn nP Q7nnR-71'7. ---; -• N -- NORTH q- _ : ,-.: . ,' CREEK �. . ANALYTI CAL BOTHELL • (425)481-9200 • FAX 485-2992 SPOKANE • (509)924-9200 ! FAX 924-9290 E • nvironmental'Laboratory Services PORTLAND • (503)906-9200 • FAX 906-9210 i 1 Geo Engineers-Redmond Project: OLYMPIC PIPELINE CO- Sampled: 6/5/98 ' 8410 154th Ave NEI Project Number: 0894-002-00 Received: 6/8/98 Redmond,WA 98052 Project Manager: Dana Carlisle Reported: 6/15/98 14:04 I Diesel Hydrocarbons(C12-C24)by WTPH-D North Creek Analytical-Bothell Batch Date Date Surrogate Reporting I Analyte Number Prepared Analyzed Limits Limit Result Units Notes* r„ JVIW-18 - B806162-00Water Diesel Range Hydrocarbons 0680327 6/10/98 6/11/98 0.250 16.5 mg/1 -_!Surrogate: 2-FBP u II II 50.0-150 108 % I,MW-19 J6806162-01 Water _ I Diesel Range Hydrocarbons 0680327 6/10/98 6/15/98 25.3 147 mg/I Surrogate: 2-FBP 50.0-150 98.3 % MW-20 J3806162-02 Water - Diesel Range Hydrocarbons 0680327 6/10/98 6/12/98 0.250 2.61 mg/1 Surrogate: 2-FBP II II II 50.0-150 102 % JVJW-38 J6806162-03 Water Diesel Range Hydrocarbons 0680327 6/10/98 6/12/98 0.250 1.48 mg/1 I'Surrogate: 2-FBP " II H 50.0-150 113 % 1 I ,— • North Creek Analytical,Inc. *Refer to end of report for text of notes and definitions. t` Joy B Ch.r_• ' ojec Mang' Page— 60 Page 3 of 6 11 0 18939 120th Avenue N.E.,Suite 101,Bothell,WA 98011-9508 ' East 11115 Montgomery,Suite B,Spokane,WA 99206-4776 044f15 S W Nimhnc A4Pnlln Rnm,nrinn no o7nnR_7119 q� NORTH FiW _,' CREEK „. r'' - ANALYTICAL BOTHELL ■-(425)481-9200 • FAX 485-2992 SPOKANE • (509)924-9200 • FAX 924-9290 _ Environmental Laboratory Services PORTLAND • (503)906-9200 • FAX 906-9210 Geo Engineers-Redmond Project: OLYMPIC PIPELINE CO- Sampled: 6/5/98 i 8410 154th Ave NE Project Number: 0894-002-00 Received: 6/8/98 Redmond,WA 98052 Project Manager: Dana Carlisle Reported: 6/15/98 14:04 • Gasoline Hydrocarbons(Toluene to Dodecane),and.BTEXby WTPH-G and EPA 8021B/Quality Control , North'Creek Analytical-Bothell Date Spike Sample QC Reporting Limit Recov. RPD RPD Analyte Analyzed Level Result Result Units Recov.Limits % Limit % Notes'I Batch: 0680271 pate Prepared: 6/9/98 Extraction Method: EPA 5030B(PTJ" lank 0680271-BLK1 Methyl tert-butyl ether 6/9/98 ND ug/l 5.00 Gasoline Range Hydrocarbons ND " 50.0 Benzene ND " 0.500 _? Toluene ND " 0.500 Ethylbenzene II ND " 0.500 _- Xylenes(total) ND " 1.00 Surrogate: 4-BFB(FID) II 48.0 50.6 " • 50.0-150 105 Surrogate: 4-BFB(P1D) II 48.0 50.9 " 50.0-150 106 JCS '0680271-BSI i_k Gasoline Range Hydrocarbons 6/9/98 500 526 ug/1 70.0-130 105 Surrogate: 4-BFB(FID) 48.0 58.6 " 50.0-150 122 - Duplicate 0680271-DUPI $806101-24 Gasoline Range Hydrocarbons 6/9/98 ND ND ug/1 25.0 Surrogate: 4-BFB(FID) 48.0 48.4 " 50.0-150 101 Duplicate 0680271-DUP2 B806144-01 Gasoline Range Hydrocarbons 6/9/98 10800 9950 ug/1 25.0 8.19 Surrogate: 4-BFB(FID) II 48.0 61.1 " 50.0-150 127 Matrix Spike 0680271-MS1 )3806101-22 Benzene 6/9/98 10.0 ND 10.9 ug/1 70.0-130 109 Toluene 10.0 0.520 11.3 .70.0-130 108 Ethylbenzene 10.0 ND 10.5 " 70.0-130 105 Xylenes(total) 30.0 ND 31.9 " 70.0-130 106 Surrogate: 4-BFB.(PID) 48.0 52.6 " 50.0-150 110 Matrix Spike Dup 0680271-MSDI )3806101-22 • Benzene 6/9/98 10.0 ND 11.1 ug/I 70.0-130 111 15.0 1.82 i Toluene " 10.0 0.520 11.7 " 70.0-130 112 15.0 3.64 Ethylbenzene " 10.0 ND 10.7 " 70.0-130 107 15.0 1.89 Xylenes(total) n 30.0 ND 32.3 " 70.0-130 108 15.0 1.87 Surrogate: 4-BFB(PID) 48.0 52.8 " 50.0-150 110 North Creek Analytical,Inc. *Refer to end of report for text of notes and definitions. �r Joy B Ch.•g,P I je, anage v B - 61 Page 4 of 6 (... ' 18939 120th Avenue N.E.,Suite 101,Bothell,WA 98011-9508 j East 11115 Montgomery,Suite B,Spokane,WA 99206-4776 P405 S.W.Nimbus Avenue Reavrrtnn nn a7nna-7139 r. NORTH ..':'1, 41 CREEK °` BOTHELL ■ 1425)481-9200 ■ FAX 485-2992 ANALYTICAL SPOKANE ■ (509)924-9200 ■ FAX 924-9290 Environmental Laboratory Services PORTLAND • (503)906-9200 • FAX 906-9210 Geo Engineers-Redmond Project: OLYMPIC PIPELINE CO- Sampled: 6/5/98 8410 154th Ave NE Project Number: 0894-002-00 Received: 6/8/98 Redmond.WA 98052 Project Manager: Dana Carlisle Reported: 6/15/98 14:04 Diesel Hydrocarbons(C12-C24) by WTPH-D/Quality Control ` North Creek Analytical-Bothell l il, Date Spike Sample QC Reporting Limit Recov. RPD RPD ,��Analyte Analyzed Level Result Result Units Recov.Limits % Limit % Notes* Batch: 0680327 pate Prepared: 6/10/98 Extraction Method: EPA 3520C/600 Series ,'plank 0680327-BLKI - Diesel Range Hydrocarbons 6/11/98 ND mg/I 0.250 Surrogate: 2-FBP 0.320 0.350 " 50.0-150 109 1 _, JCS 0680327-BSI Diesel Range Hydrocarbons 6/11/98 2.00 1.76 mg/1 60.0-140 88.0 Surrogate: 2-FBP ; 0.320 0.337 " 50.0-150 105 -° Duplicate 0680327-DUP2 J3806162-00 -- Diesel Range Hydrocarbons 6/11/98 16.5 24.4 mg/1 44.0 38.6 Surrogate: 2-FBP 0.605 0.542 50.0-150 89.6 . • i I , North Creek Analytical,Inc. *Refer to end of report for text of notes and definitions. Joy B Chang, roj ct M ager B — 62 Page 5 of 6 I 18939 120th Avenue N.E.,Suite 101,Bothell,WA 98011-9508 East 11115 Montgomery,Suite B,Spokane,WA 99206-4776 . 94f15 S W Nimhus Avonna Anavnrtnn f1R Q7MR-7119 NORTH r 4 1 CREEK . i BOTHELL • (425)481-9200 • FAX 485-2992 ANALYTICAL SPOKANE • (509)924-9200 • FAX 924-9290 Environmental Laboratory Services PORTLAND • (503)906-9200 • FAX 906-9210 Geo Engineers-Redmond Project: OLYMPIC PIPELINE CO- Sampled: 6/5/98 8410 154th Ave NE Project Number: 0894-002-00 Received: 6/8/98 Redmond,WA 98052 Project Manager: Dana Carlisle Reported: 6/15/98 14:04 !' Notes and Definitions # Note 1 The sample chromatogram indicates the presence of a diesel range hydrocarbon.Quantitation of this product is more accurately accomplished using WTPH-Dx methodology,therefore,the concentrations reported from the WTPH-Dx should be considered our best estimate of hydrocarbon concentrations in the sample. 2 The reporting limit for this analyte has been raised to account for interference from coeluting organic compounds present in the sample. 3 The surrogate recovery for this sample cannot be accurately quantified due to interference from coeluting organic compounds present in the sample. DET Analyte DETECTED ND Analyte NOT DETECTED at or above the reporting limit NR Not Reported dry Sample results reported on a dry weight basis Recov. Recovery RPD Relative Percent Difference Il i i North Creek Analytical,Inc. B - 63 Joy B Ch g, ojec anage 18939 120th Avenue N.E.,Suite 101,Bothell,WA 98011-9508 Page 6 of East 11115 Montgomery,Suite B,Spokane,WA 99206-4776 44nr,S W Nimhiic A1iPni ea Pa-mar-Inn no a7nno-71'19 Quantitation Report • Data File : C:\HPCHEM\3\DATA\F09034.D\FID1A.CH Vial: 34 ... Acq On : 10 Jun 1998 12 :37 am Operator: lac Sample : b806162-00 rl Inst. GC #6 Misc 1 : 2 .5 mL Multiplr: 2 . 00 IntFil le : SURR.E Data : C:\HPCHEM\3\DATA\F09034.D\FID2B.CH .Vial: 34 Acq On : 10 Jun 98 12 :37 am Operator: lac • Sample : b806162-00 rl Inst : GC #6 Misc ' : 2 .5 mL Multiplr: 2 . 00 IntFile : SURR2 .E Quant Time: Jun 10 7:22 1998 Quant Results File: TPHG.RES Quant Method : C:\HPCHEM\3\METHODS\TPHG.M (Chemstation Integrator) Title : TPH-G Water Method ' Last 'Update : Mon Jun 08 13 :39 :28 1998 i; Response via : Multiple Level Calibration DataAcq Meth : TPHG.M Volume Inj . .• Signal #1 Phase : Signal #2 Phase: Signal #1 Info Signal #2 Info : -esponse_ 1 F09034.DWID1A !1 1! 1 1 I 'I m 1 II 1111 N ; 350001 it II 1; II i I ' ,1 1 1 1 ; 11 30000- 1I ;1 I I I 25000 I 20000 I I 11 \l ! 1 1 � ;,• 1 li f, 11 I 1500010 i i I; IrIt� i n I Ij j '•I10000{ �� ;! IlijlId I , I I ): IJI ' • � li 01I I I•kk A • I I 50001 1 0 I- m 1- co 0 e I w C m {L 1' a N , . , , r ' , „ , . , , .. rr . , . .1 ime 0.00 2.00 4.00 6.00 8.00 10.00 12.00 14.00 16.00 18.00 20.00 22.00 esponse F09034.D\FID2B i ei! 0, ! • . m II 140000], I' • II I I f +. 120000 7 •� I t ii I11 i, 1 !i 11'' 1 Ili 1000001 I I ;I f;11 1 I 1 , 1 I �P i�, 80000'1 . - I I I,I 1 ' 60000 I, �I 1 I Ili ;; I i it i I • Ii, li A� 400001 II 1 1 111!! l i o I ; ,il II � 0 I • 9 20000; cn w A I 11 1 �'� i� i Y , ^._,A.,01„_._,[1``.11 _l_,_.0,„zy,._,,..,,,__,.,- ...� `,. ,,,u \ 4 - 0 0 °USA amr$w r T iILJ r r r r [Time 0.00 2.00 4.00 ^ 6.00 8.00 10.00 12.00 14.00 16.00 18.00 20.00 22.00 B - 64 . j' F09034.D , TPHG.M Wed Jun 10 07:22 :55 1998 Page 2 Quantitation Report . Data File : C:\HPCHEM\3.\DATA\F09029.D\FID1A.CH Vial: 29 Acq On 9 Jun 1998 10 :07 pm Operator: lac ,'' Sample : b806162-01 Inst. : GC #6 Misc : 50 uL Multiplr: 100. 00 IntFile : SURR.E Data File : C:\HPCHEM\3\DATA\F09029.D\FID2B.CH Vial: 29 Acq On : 9 Jun 98 10 :07 pm Operator: lac Sample : b806162-01 Inst : GC #6 Misc : 50 uL Multiplr: 100. 00 IntFile : SURR2 .E Quant Time: Jun 9 22 :31 1998 Quant Results File: TPHG.RES Quant Method : C:\HPCHEM\3\METHODS\TPHG.M (Chemstation Integrator) Title : TPH-G Water Method Last Update : Mon Jun 08 13 :39:28 1998 Response via : Multiple Level Calibration , DataAcq Meth : TPHG.M , Volume Inj . - Signal #1 Phase : Signal #2 Phase: Signal #1 Info Signal #2 Info : _ 'Response_ 17. F09029.D\FIDIA i II 11 1 �I N 35000; ,1 , I I i 30000. !- I 1 25000 200001 - 1 Y 1 i 15000-II • i ' i i II II Y Il � 10000 � 1 ` 11 , IAJ i i5000 a Id . �ti.\-Al kiLIU ,k_ JA Ll � 1 O i F- U. H C C j Y O W F. . m I J W N O 10 3 a I t 7 . . , ! , , , . ` . . . 1 , . , , q , _ Time 0.00 2.00 4.00 6.00 8.00 10.00 12.00 14.00 16.00 18.00 20.00 22.00 II esponse_ F09029.DWID2B 1400001 Il�I;I I i II Ili �, i1 1 1 120000; 1 I'' i I I I: :I m 'I I I� f •i 1 10000o a i l i I II I, 1 YY 1 11 80000 t 60000 I o 1 II 1 ; 40000{ 1 R I ' \, 11. I Ii a j r V L 20000cl I a . �l� 0; o m v a N m .. o c LO m c Lci • v m 1 , , i Q . , s, 0 1° E--A, .•, , , , , i , , , . , ime 0.00 2.00 4.00 6.00 8.00 10.00 12.00 ' 14.00 16.00 18.00 20.00 22.00 B - 65 F09029.D TPHG.M Tue Jun 09 22:31:42 1998 Page 2 Quantitation Report DatalFile : C:\HPCHEM\3\DATA\060998\F09030 .D\FIDIA.CH Vial: 30 _•_, Acq On 9 Jun 1998 10 :37 pm Operator: lac Sample : b806162-02 Inst : GC #6 -_' Misc : 5 mL Multiplr: 1.00 IntFile : SURR.E Data :File : C:\HPCHEM\3\DATA\060998\F09030.D\FID2B.CH Vial : 30 Acq Qn 9 Jun 98 10 :37 pm Operator: lac Sample : b806162-02 Inst : GC #6 ' Misc : 5 mL Multiplr: 1. 00 IntFile : SURR2 .E Quant Time: Jun 10 7 :40 1998 Quant Results File: TPHG.RES i I Quant Method : C:\HPCHEM\3\METHODS\TPHG.M (Chemstation Integrator) ' Title : TPH-G Water Method Last ,Update : Mon Jun 08 13 :39:28 1998 I; Response via : Multiple Level Calibration L_' DataAcq Meth : TPHG.M ' Volume Inj . Signal #1 Phase : Signal #2 Phase: Signal #1 Info Signal #2 Info : Response_' F09030.D\FIDIA ' Ili! `a is I IVIi II 11 I I I I i l i m I;i ' I I ; I II I ill !" I 135000 I ; 'I1 l I l 1 • IIi 111 i11 ill'` ' 1 i 30000i ! . : I I' I I I I' III I Il 25000 I I I i I I I j 1 I I 4i II Ik it"I III! I; I i' I I' HR. l I j 20000a I I i it l° 11 I i 11 i j�I I II i I I' i I 1 I III , 1 l i I (i I II Ili! I ' 011 I I III I I I I ! I 15000-1 i II 1 , 1 III ' I; I I 'I I 'l I li I i I I I !Iq IIi : ll � I; 1II ,,, yt. 1I , 1 : I1 i 10000 i ii I `io' ' ! ` 'I ( \i II I 5000: I�'i I q , I I: 0- i1 co i- c co 11. L com c m 3 m a N Q f 3 12 11 ' Time 0.00 2.00 4.00 6.00 8.00 10.00 12.00 14.00 16.00 18.00 20.00 22.00 . ' Response_i F09030.D\FID2B I i N I 11 .II III 'I+IiI �1i II , 140000- it 1I 1 !I II I iff1lll 11!�I Y i 1 11 I, ,III 1 .i I'' II ' i I I1I"I I l' 'I I, �I I i ' ��il 100000. I I ; I it ' GI; ; l I • `" 'I II h IIi i F'II it E I " I FI 80000 I l l 1) I I �. '` i11 t ;I I IIiIi .,I: I ,I 1 I I Ii II p [I 1 4 I • 60000: 1' (III i 1 1 ;I Ill ! J I I l v I. i I R 2 iI f I I I 1 I� N f 1, II 11 I I. III. I° I 40000- i l li I; I I i I i ill I I' I;IF. II 11 I I I ` I \I f II i 20000 I IN r. I1I i,i 'Y: I F I 'Vf'. I Irj �1 i ; r lI ` i \ II :i Al.I ,r ' I 01 Y'' All 1 1 1.1 I ''''. .-r! !' .:- • 0 J 6 F 0- O.O. N c m m m c m m m W '' 6 c 5 -,Ye5 co •Fa m r O 14 E d Time 0.00 2.00 4.00 6.00 8.00 10.00 12.00 14.00 16.00 18.00 20.00 22.00 F09030.D . TPHG.M Wed Jun 10 07:40:2466998 Page 2 i Quantitation Report • Data File : C:\HPCHEM\3\DATA\F10004.D\FID1A.CH Vial : 4 Acq On : 10 Jun 1998 8 :27 am Operator: lac Sample : b806162-03 rl Inst . : GC #6 Misc : 5 mL Multiplr: 1. 00 IntFile : SURR.E Data File : C:\HPCHEM\3\DATA\F10004.D\FID2B.CH Vial : 4 , Acq On : 10 Jun 98 8 :27 am Operator: lac . Sample : b806162-03 rl Inst : GC #6 Misc : 5 mL Multiplr: 1.00 IntFile : SURR2 .E ' Quant Time: Jun 10 8 :51 1998 Quant Results File: TPHG.RES Quant Method : C:\HPCHEM\3\METHODS\TPHG.M (Chemstation Integrator) Title : TPH-G Water Method Last Update : Mon Jun 08 13 :39:28 1998 Response via : Multiple Level Calibration DataAcq Meth : TPHG.M Volume Inj . , Signal #1 Phase : Signal #2 Phase: Signal #1 Info Signal #2 Info esponse_ .17 F10004.D\FIDIA 35000 I i., I it �i`I'� I' 1 II I I, I I a II 30000 ; II I Ili : � II Il I I 6 25000 I h • 20000i • i �" 15000' i I • II 1 f I Jpl ' • II I i I I;,10000: ' p I I �� IIli � I' 50003. I`I1S f •� II `�� 'UI�� „ �A ��l (� V. u vJi l `V�_' k_ , n �`U U"'��/"V ��" /'�l ��___ J a � C I jp IL Ca/ I a N Q ime 0.00 2.00 4.00 6.00 8.00 10.00 12.00 14.00 16 00 18.00 20A0 22.00 • esponse_ F10004.D1FID2B • 7 of 1400001 1 1200001Ii rn I, • • m 100000 i ! I , 800001. . p " II f i • ' li !i I I II 60000 I 11111 'i i:.:f i I 1 I1 PI II IrIl I . ' ' 400001 aI g ' ill ii h I Iik m 20000 1 y i � :; �� , r 0 Q m a a ® € m a I c c e Time 0.00 2.00 4.00 6.00 8.00 10.00 12.00 14.00 16.00 18.00 20.00 22.00 " B - 67 F10004.D TPHG.M Wed Jun 10 08:51:09 1998 Page '2 Quantitation Report • Data File : C:\HPCHEM\4\DATA.SEC\F11061.D Vial: 33 Acq On : 6-11-98 11:52 :07 PM Operator: kj Samplle : B806162-00 Inst . : GC #7 Misc : w Multiplr: 1. 00 IntFile : SURR.E -I Quant Time: Jun 12 7 :40 1998 Quant Results File: TPHD2 .RES - Quant Method : C:\HPCHEM\4\METHODS\TPHD2 .M (Chemstation Integrator) Title) : TPH-D Rear Method Last Update : Wed Jun 10 05:02 :02 1998 Response via : Multiple Level Calibration DataAcq Meth : TPHD.M Volume Inj . , - Signal Phase : Signal Info : response_ m F11061.D\FID2B I i ' 1 ! ,' i h 1 j 1 • 9500000 4 ' I � i 1 9000000 85000001 r. 8000000 I I . 7500000-j F 1 ' -- I 7000000 ' I • i 6500000 i , 6000000? .I 55000002,' II 5000000;•I 1.,, 45000004. II ' 4i1 ' 4000000- ; II Iii 3500000 j I ' i �i I� 3000000: I •dl! ! •• .,I IG 2500000�' H h iI ! ' 'HI 'I '2000000= I ,' r ; iI 1500000j •I I I i '' y iI I ' ��'1000000 I . \4i . r., 500000-'i ` I I v I I ;I 500000. -1000000 : o °� I- 0 m e� 0 0 a s o W °s, 2 no 8 I U U 5 L c m t U O - x 2 Time • 1.00 2.00 3.00 4.00 5.0.0 6.00 7.00 8.00 9.00 10.00 11.00 12.00 13.00 14.00 15.00 I ` F11061.D ' TPHD2.M Fri Jun 12 07:40:3768 998 - Page 2 Quantitation Report Data File : C:\HPCHEM\4\DATA.SEC\F15007.D Vial : 4 Acq On : 6-15-98 9 :17:30 AM Operator: lac , Sample : b806162-01 rl Inst ' : GC #7 Misc : 101x w Multiplr: 1.00 IntFile : SURR.E Quant Time: Jun 15 9:39 1998 Quant Results File: TPHD2 .RES ,, Quant Method : C:\HPCHEM\4\METHODS\TPHD2 .M (Chemstation Integrator) Title : TPH-D Rear Method Last Update : Wed Jun 10 05:02 :02 1998 Response via : Multiple Level Calibration DataAcq Meth : TPHD.M Volume Inj . (' Signal Phase : I` Signal Info 1-esponse_ F15007.D\FID2B 9500000- 9000000 8500000 8000000- 7500000- 7000000- I: 6500000- . 6000000- J 5500000- 5000000- 4500000- 4000000- - • • , , 1 3500000- i 3000000- I 25000001 91 - 1 2000000�i ij 11 ' (0141 1500000 j • i I ` ' 1000000 F ' I l• MN 0 it 1) yI • 500000 N jj k�6l i f+tI I `' o , a.r I _ -5000001 -10000001 o • 0 2 a , o , UV U y'f. t Np 2 L 8 V O �' ime 1.00 2.00 3.00 4.00 5.00 6.00 B :0�4 7.00 9 8.00 9.00. 10.00 11.00 12.00 13.00 14.00 15.00 F15007.D •TPHD2.M Mon Jun 15 09:41 1998 Page 2 ' , • Quantitation Report 1 , Data File : C:\HPCHEM\4\DATA.SEC\F11063 .D Vial: 35 . Acq On : 6-12-98 12 :15 :05 AM Operator: kj Sample : B806162-02 Inst ' : GC #7 ' _' Misc : w Multiplr: 1. 00 IntFi'le : SURR.E y Quant Time: Jun 12 7 :41 1998 Quant Results File: TPHD2 .RES Quantl Method : C:\HPCHEM\4\METHODS\TPHD2.M (Chemstation Integrator) Title . : TPH-D Rear Method Last Update : Wed Jun 10 05:02 :02 1998 Response via : Multiple Level Calibration DataAcq Meth : TPHD.M Volume Inj . .` Signal Phase : Signal Infp . i� Response_ U, F11063.D\FID2B •r j ui ei 9500000- I 9000000 - i 8500000- I 8000000- • 7500000 7000000 • 6500000- ' 1 ; 6000000 % , I • • • - 5500000 - Irj r 5000000 II II I 4500000- I I I 1 i {, (I GI R I • ' I 4000000] 1 3500000-I' i r 1 I I' I 1 1 3000000-I • ! l 2500000- E i ` 1 i 4 2000000 ' !_ 1500000-i �I I;1 I I '` y 11,74 • 1000000.; ' ,l I ` �ky ,� , II �` 500000- 1 I l If . !i i gr.,j,,i r 0- 11 -500000 -1000000 o I- •o m 8 # o m c 1. ce , ° I I71, m , Time 1.00 2.00 3.00 4.00 5.00 6.00 7.00 8.00 9.00 10.00 11.00 12.00 13.00 14.00 15.00 ,B - 70 F11063 .D TPHD2 .M Fri Jun 12 07:41:05 1998 Page 2 • Quantitation Report Data File : C:\HPCHEM\4\DATA\F11064 .D Vial : 36 Acq On : 6-12-98 12 :15 : 05 AM Operator: kj Sample : B806162-03 Inst ' : GC #7 Misc : w Multiplr: 1.00 IntFile : SURR.E Quant Time: Jun 12 7 :30 1998 Quant Results File: TPHD.RES • Quant Method : C:\HPCHEM\4\METHODS\TPHD.M (Chemstation Integrator) Ai Title : TPH-D Front Method Last Update : Wed Jun 10 04 :48 :44 1998 Response via : Multiple Level Calibration 1; DataAcq Meth : TPHD.M Volume Inj . : Signal Phase : " • Signal Info . Response_ p F11064.D\FIDIA 95000001 9000000, 1 8500000{ 80000001 1 75000001 700000011 ! 6500000- 60000001 5500000] ' 5000000 45000001 4000000-i 3500000- 3000000-; I 1 kh 2500000 ,)1 2000000 4 , ��'q 15000001 t' 1000o00i W 1i) 500000 fib+'1I ..-A1 1 Vh 01 i -500000 • -10000001 o 0 U O C N .E V$ N Q !^_ Lam, y Time 1.00 2.00 3.00 4.00 5.00 6.00 7.00 8.00 9.00 10.00 11.00 12.00 13.00 14.00 15.00 II B - 71 F11064.D TPHD.M Fri Jun 12 07:30:22 1998 Page 2 18939 120th Avenue N.E..Suite 101. Bothell.WA 98011-9508 (206)481 9200 FAX 4d5.299)A-• East 11 I I5 Montgomery.Suite B. Spokane.WA 99206-4779 (509)924-9200 FAX 924-9290 NORTH —�� •� 9405 S.W.Nimbus Avenue, Beaverton.OR 97()n8-7132 (503)643.9'_W FAX 644-2202_ '�, �'�'CREEK �"�/IANALYTI CAL _®Environmental Laboratory Services CHAIN OF CUSTODY REPORT Work Order # 16,.46 i 6Z REPORT TO: /i pU F n'6 IA' (L j7 S INVOICE TO: I TURNAROUND REQUEST in Business Days" ATTENTION: M kfll 1,11 AATTENTION: Organic&Inorganic Analyses ADDRESS: ' (p IS-4-i filIl /7I/in' ADDRESS: 10 7 5 4 3 2 I >y` (2 b w,(.),.,0 1~P— (g d 5col-- Sianitul ',�rr II C/ / Fuels&Hydrocarbon Analyses PHONE C�.)c ) O(9 I _6 C� .n0 GFAX:Cyrj,S�" �f L'—(�tJ s� P.O.NUMBER: NCA QUOTE M: 3-4 2 I Same PROJECT NAME: 0 -\( p l(, Y" I P V�/II 'J Analysis �(� Standard Request: [N /�T PROJECT NUMBE�R::'� 0 y i q- OD 9.-- 00'_ I \,l^`�� OTHER s�z tY: SAMPLED BY: �/ t vh�1� I. r- ` .1 T•t'(�v e� w .T,nmvuun i Requests less than arnndwJ N um Wilt Hash Charges. CLIENT SAMPLE SAMPLING t.'N', NCA.SAMPj$1pc s;'1 ik MATRIX s OF IDENTIFICATION DATTJTIME ,•"-.�.IlaMiiiIDry 03eOnly):0`ti. (W.S.A.Col CONTAINERS COMMENTS I. i..—/8' (i5/1 X 1(30 .8$a � &=00`3:: ?C w 3 ,�a tti:�f:r.. ��-�t•a' ^:LL Fit>: 3. [ ►t..—D- o I1�o . zr .. . • � r^' 3� iw�6�'a�r j�;�l`;a r ki 5. , � '�f1 t:�jl 40 ;t 1, . :,_,.. ' Rsry - �T. "'; .` 1 . � t , It 72 po c...i.,..:_41,4004te„.,,e,,. . ,t r tgRifkge 9. III. : , '. _ 611114 'IIf ��(( RELINQUISHED BY(Sir aErr, -DATE:6/•1Id RECEIVED BYts+s.w.nc � ,{/1 / DATE:( qR- PRINT NAME: (/� // �LY"( FIRM: TIME: CID 1/ PRINT NAME: /<(I' l- k F ? ( FIRM: TIME: • RELINQUISHED BYtsf,...,e DATE RECEIVED BYtsr.:..ai: DATE: PRINT NAME: FIRM: TIME: PRINT NAME: FIRM: TIME: ADDITIONAL REMARKS: • /�-�/� !/- a- �I 111�-S PAGE 1// OF ( ._ NORTH 41 CREEK i BOTHELL • (425)481-9200 • FAX 485-2992 • ANALYTICAL SPOKANE • (509)924-9200 • FAX 924-9290 Environmental Laboratory Services PORTLAND ■ (503)906-9200 • FAX 906-9210 Geo Engineers-Redmond Project: OLYMPIC PIPELINE CO- Sampled: 6/12/98 8410 154th Ave NE Project Number: 0894-002-00 Received: 6/12/98 Redmond,WA 98052 Project Manager: Dana Carlisle Reported: 6/19/98 14:30 ANALYTICAL REPORT FOR SAMPLES: Sample Description Laboratory Sample Number Sample Matrix Date Sampled MW-18 B806275-00 Water 6/12/98 MW-19 B806275-01 Water 6/12/98 MW-20 B806275-02 Water 6/12/98 MW-38 B806275-03 Water 6/12/98 GeoEngineers JUN221998 Routing .Q File • ' Q North Creek Analytical,Inc. The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. B - 73 Joy B Ch ,P oject anager 18939 120th Avenue N.E.,Suite 101,Bothell,WA 98011-9508 Page 1 of 6' East 11115 Montgomery,Suite 8,Spokane,WA 99206-4776 gem C W Nimhiic Avamio Roa,'nrtnn t1R Q7nnR-71Q9 _, q_ NORTH •::., ,�-i CREEK i \. A ANALYTICAL SPOKAN POKANE ■E • (509)924-9200 • FAX 924-9290 i Environmental Laboratory Services PORTLAND • (503)906-9200 • FAX 906-9210 c 1 Geo Engineers-Redmond Project: OLYMPIC PIPELINE CO- Sampled: 6/12/98 8410 154th Ave NE Project Number: 0894-002-00 Received: 6/12/98 Redmond,WA 98052 Project Manager: Dana Carlisle Reported: 6/19/98 14:30 1 Gasoline Hydrocarbons(Toluene to Dodecane)and BTEX by WTPH-G and EPA 8021B 1 North Creek Analytical-Bothell ti ;i Batch Date Date Surrogate Reporting Analyte Number Prepared Analyzed Limits Limit Result Units Notes* •i MW-18 , 0806275-00 Water •- 'Gasoline Range Hydrocarbons 0680466 6/15/98 6/16/98 100 2520 ug/1 3 __,Benzene If 12.0 ND 1 Toluene 4.00 ND " 1 _ Ethylbenzene II II II 1.00 39.6 " Xylenes(total) " 2.00 108 " a;Surrogate: 4-BFB(FID) - " " II 50.0-150 127 % 7 Surrogate: 4-BFB(PID) " II II 50.0-150 140 " - J lW-19 i 0806275-01 Water Gasoline Range Hydrocarbons 0680466 6/15/98 6/16/98 100 3840 ug/1 3 '' Benzene 25.0 ND 1 Toluene 5.00 ND 1 Ethylbenzene 1 " II II 1.00 74.6 " Xylenes(total) 2.00 211 " Surrogate: 4-BFB(FID) n II II 50.0-150 137 % - Surrogate: 4-BFB(PID) " 50.0-150 144 " ]VIW-20 )3806275-02 Water Gasoline Range Hydrocarbons 0680466 6/15/98 6/16/98 50.0 _ 2950 ug/1 3 Benzene 8.00 ND 1 Toluene 4.00 ND 1 Ethylbenzene 0.500 16.0 " i Xylenes(total) " 1.00 41.7 " Surrogate: 4-BFB'(FID) 50.0-150 NR % 2 - Surrogate: 4-BFB(PID) II II II 50.0-150 ' 110 " JVIW-38 1 - B806275-03 Water j Gasoline Range Hydrocarbons 0680466 6/15/98 6/15/98 50.0 211 ug/1 3 Benzene 0.500 3.69 " Toluene . " " II 0.500 ND " ' Ethylbenzene II " 0.500 1.21 ' Xylenes(total) " 1.00 1.78 " . Surrogate: 4-BFB(FID) 50.0-150 --. .. --- 115 —% Surrogate: 4-BFB(PID) 50.0-150 110 II `'. North Creek Analytical,Inc. *Refer to end of report for text of notes and definitions. 1 B - 74 Joy B Ch g,P of'• an r 18939 120th Avenue N.E.,Suite 101,Bothell,WA 98011-9508 Page 2 of 6 d I ' East 11115 Montgomery,Suite B,Spokane,WA 99206-4776 I`. Qdnc C W Nimhiic Avonno Raavnr$nn f1R 07nnP-7119 q_ NORTH nail; CREEK A ANALYTICAL BOTHELL ■ (425)481-9200 ■ FAX 485-2992 SPOKANE ■ (509)924-9200 ■ FAX 924-9290 )'" Environmental Laboratory Services PORTLAND ■ (503)906-9200 • FAX 906-9210 Geo Engineers-Redmond Project: OLYMPIC PIPELINE CO- Sampled: 6/12/98 8410 154th Ave NE Project Number: 0894-002-00 Received: 6/12/98 Redmond,WA 98052 Project Manager: Dana Carlisle Reported: 6/19/98 14:30 " I Diesel Hydrocarbons(C12-C24)by WTPH-D l -, North Creek Analytical-Bothell Batch Date Date Surrogate Reporting Analyte: Number Prepared Analyzed Limits Limit Result Units Notes* JV1W-18 0806275-00 Water Diesel Range Hydrocarbons 0680453 6/15/98 6/17/98 2.75 24.1 mg/1 Surrogate: 2-FBP 50.0-150 136 % MW-19 B806275-01 Water Diesel Range Hydrocarbons 0680453 6/15/98 6/17/98 2.75 31.6 mg/1 Surrogate:'2-FBP 50.0-150 114 % MW-20 JB806275-02 Water Diesel Range Hydrocarbons 0680453 6/15/98 6/17/98 0.250 1.75 mg/1 Surrogate: 2-FBP, 50.0-150 94.4 % JV1W-38 D806275-03 Water Diesel Range Hydrocarbons 0680453 6/15/98 6/17/98 0.250 0.807 mg/1 Surrogate: 2-FBP 50.0-150 - 83.4 % North Creek Analytical,Inc. *Refer to end of report for text of notes and defrnitions. t' B — 75 Joy B Chan ,Pr ject an er 18939 120th Avenue N.E.,Suite 101,Bothell,WA 98011-9508 Page 3 of 6 East 11115 Montgomery,Suite B,Spokane,WA 99206-4776 thin 5 W Nimhns Avennp RPavertnn nR O7nno_71 : .- NORTH ....__4i CREEK .• 41 ANALYTICAL BOTHELL • (425)481-9200 • FAX 485-2992 SPOKANE • (509)924-9200 • FAX 924-9290 503•PORTLAND906-9200 • FAX 906-9210 Environmental Laboratory Services ( ) Geo Engineers-Redmond Project: OLYMPIC PIPELINE CO- Sampled: 6/12/98 8410 154th Ave NE Project Number: 0894-002-00 Received: 6/12/98 • Redmond,WA 98052 Project Manager: Dana Carlisle Reported: 6/19/98 14:30 Gasoline Hydrocarbons(Toluene to Dodecane)and BTEX by WTPH-G and EPA 8021B/Quality Control North Creek Analytical-Bothell Date Spike Sample QC Reporting Limit Recov. RPD RPD Analyte Analyzed Level Result Result Units Recov.Limits % Limit % Notes* 1 LBatch: 0680466 : pate Prepared: 6/15/98 Extraction Method: EPA 5030B(P/TI - Biggs 0680466-BLKI _,Gasoline Range Hydrocarbons 6/15/98 ND ug/1 50.0 Benzene ND " 0.500 _'Toluene " ND 0.500 Ethylbenzene ND " 0.500 -�i Xylenes(total) ND 1.00 Surrogate: 4-BFB(F,D) II 48.0 50.8 " 50.0-150 106 Surrogate: 4-BFB(PID) II 48.0 50.6 " 50.0-150 105 1 ,1t CS 0680466-BSI , Gasoline Range Hydrocarbons 6/15/98 500 514 ug/1 70.0-130 103 Surrogate: 4-BFB(FID) 48.0 58.2 " . 50.0-150 121 Duplicate 0680466-DUPI B806270-00 Gasoline Range Hydrocarbons 6/15/98 121000 131000 ug/I 25.0 7.94 Surrogate: 4-BFB(FID) 48.0 59.3 " 50.0-150 124 1 - Duplicate I 0680466-DUP2 )3806304-00 • Gasoline Range Hydrocarbons 6/16/98 159 163 ug/1 25.0 2.48 11 Surrogate: 4-BFB(FID) II 48.0 52.4 " 50.0-150 109 1 Matrix Spike 0680466-MSI . B806270-04 i'''' Benzene 6/15/98 10.0 ND 11.4 ug/I 70.0-130 114 i{ ; Toluene 10.0 ND 11.1 70.0-130 111 Ethylbenzene " 10.0 ND 10.7 .70.0-130 107 , Xylenes(total) " 30.0 ND 32.0 " 70.0-130 107 Surrogate: 4-BFB(PID) II48.0 52.7 " 50.0-150 110 • Matrix Spike Dup 0680466-MSDI B806270-04 • Benzene 6/15/98 10.0 ND 11.3 ug/1 70.0-130 113 15.0 0.881 Toluene 10.0 ND 11.1 " 70.0-130 111 15.0 0 Ethylbenzene " 10.0 ND 10.8 " 70.0-130 108 15.0 0.930 -. Xylenes(total) I " 30.0 ND 32.3 " 70.0-130 108 15.0 0.930 Surrogate: 4-BFB(PID) 48.0 53.0 " 50.0-150 110 J , I �Y North Creek Analytical,Inc. *Refer to end of report for text of notes and definitions. B - 76 1 Joy B Cha ,P jec an er . 18939 120th Avenue N.E.,Suite 101,Bothell,WA 98011-9508 Page 4 of 6 _ I East 11115 Montgomery,Suite B,Spokane,WA 99206-4776 9405 S W Nimhlic Avanua Raavartnn f1R n7nrul_7119 NORTH : i CREEK A\+ ' ANALYTICAL BOTHELL • (425)481-9200 • FAX 485-2992 SPOKANE • (509)924-9200 • FAX 924-9290 Environmental Laboratory Services PORTLAND • (503)906-9200 • FAX 906-9210 Geo Engineers-Redmond Project: OLYMPIC PIPELINE CO- Sampled: 6/12/98 8410 154th Ave NE Project Number: 0894-002-00 Received: 6/12/98 Redmond,WA 98052 Project Manager: Dana Carlisle Reported: 6/19/98 14:30 Diesel Hydrocarbons(C12-C24)by WTPH-D/Quality Control North Creek Analytical-Bothell Date Spike Sample QC Reporting Limit Recov. RPD RPD Analyte Analyzed Level Result Result Units Recov.Limits % Limit % Notes* Batch: 0680453 pate Prepared: 6/15/98 Extraction Method: EPA 3520C/600 Series Blank, 0680453-BLKI Diesel Range Hydrocarbons. 6/16/98 ND mg/I 0.250 Surrogate: 2-FBP 0.320 0.284 " 50.0-150 88.8 J CS 0680453-BSI Diesel Range Hydrocarbons 6/16/98 2.00 1.76 mg/I 60.0-140 88.0 Surrogate: 2-FBP 0.320 0.249 " 50.0-150 77.8 Duplicate 0680453-DUPI p806264-06 Diesel Range Hydrocarbons 6/16/98 ND ND mg/I 44.0 Surrogate: 2-FBP 0.605 0.470 " 50.0-150 77.7 Duplicate 0680453-DUP2 p806265-02 �? Diesel Range Hydrocarbons 6/16/98 0.287 ND mg/I 44.0 4 Surrogate: 2-FBP 0.641 0.541 " 50.0-150 84.4 North Creek Analytical,Inc. "Refer to end of report for text of notes and definitions.,,' B - 77 Joy B Chang, ro ct anage 18939 120th Avenue N.E.,Suite 101,Bothell,WA 98011-9508 Page 5 of 6 j East 11115 Montgomery,Suite B,Spokane,WA 99206-4776 i Qnn5 S W Nimbus AVpniIP Ropuortnn f1R Q7nfP-7139 NORTH ,', id CREEK �- : ANALYTICAL BOTHELL • (425)481-9200 • FAX 485-2992 SPOKANE • (509)924-9200 • FAX 924-9290 Environmental Laboratory Services PORTLAND • (503)906-9200 • FAX 906-9210 Geo Engineers-Redmond Project: OLYMPIC PIPELINE CO- Sampled: 6/12/98 ' 8410 154th Ave NE Project Number: 0894-002-00 Received: 6/12/98 Redmond,WA 98052 Project Manager: Dana Carlisle Reported: 6/19/98 14:30 Notes and Definitions # Note - 1 The reporting limit for this analyte has been raised to account for interference from coeluting organic compounds present in the sample. 2 The surrogate recovery for this sample cannot be accurately quantified due to interference from coeluting organic compounds present in the sample. 3 The sample chromatogram indicates the presence of a diesel range hydrocarbon.Quantitation of this product is more accurately accomplished using WTPH-Dx methodology,therefore,the concentrations reported from the WTPH-Dx should be considered our best estimate of hydrocarbon concentrations in the sample. 4 Analyses are not controlled on RPD values from sample concentrations less than 10 times the reporting limit. DET Analyte DETECTED ND Analyte NOT DETECTED at or above the reporting limit NR Not Reported , dry Sample results reported on a dry weight basis Recov. Recovery RPD Relative Percent Difference 1� • North Creek Analytical,Inc. B _ 78 Page 6 of 6 Joy B Chang, roj ct ager • 18939 120th Avenue N.E. Suite 101,Bothell,WA 98011-9508 g East 11115 Montgomery,Suite B,Spokane,WA 99206-4776 9405 S.W.Nimhnc AvPnnP ResvPrtnn OR 97008-7117 Quantitation Report Data File : .C:\HPCHEM\3\DATA\F16005.D\FID1A.CH Vial: 5 Acq On : 16 Jun 1998 9:53 am Operator: hdg Sample : b806275-00 r2 Inst : GC #6 Misc : 2 .5 ml Multiplr: 2. 00 IntFile : SURR.E Data File : C:\HPCHEM\3\DATA\F16005.D\FID2B.CH Vial: 5 Acq On : 16 Jun 98 9:53 am Operator: hdg Sample : b806275-00 r2 Inst : GC #6 Misc : 2.5 ml Multiplr: 2.00 IntFile : SURR2 .E Quant Time: Jun 16 10 :17 1998 Quant Results File: TPHG.RES Quant Method : C:\HPCHEM\3\METHODS\TPHG.M (Chemstation Integrator) Title : TPH-G Water Method Last Update : Fri Jun 12 13 :39 :07 1998 Response via : Multiple Level Calibration DataAcq Meth : TPHG.M Volume Inj . • Signal #1 Phase : Signal #2 Phase: Signal #1 Info Signal #2 Info : Response_ F16005.D\FID1A { II44 ! HH' 350001 II 30000 1 I 25000 I 20000 I 15000 i 1! ik li ' 10000 I ! �i I I i I I 1 . 4, ‘\/ ,I i �It I 1 5000- v bU "l}AVV-- _I ki L____ i _ xa. xci. co CL . N N a , q cA3w z Time 0.00 2.0 a �0 4.00 6.00 8.00 10.00 12.00 14.00 16.00 18.00 20.00 22.00 esponse_ F16005.D\FID2B , N 6 Iei 1400001 I - . 1 120000 r: Iij 100000-I ;i I , I I 80000- N in I I , 60000- I ` I! 411 40000- 4 L II I I II p 020000 0 1_I�y\ /'1.r _ n I� 11 r I N , 0 a o m a F N c -- 0 m ® yy ® m a I M C C L IV mC N P k 4 X II ime 0.00 2.00 4.00 6.00 8.00 10.00 12.00 14.00 16.00 18.00 20.00 22.00 1 F16005.D TPHG.M Tue Jun 16 10:17$i7 7P998 Page 2 i Quantitation Report • Data File : C:\HPCHEM\3\DATA\F16007.D\FID1A.CH Vial: 7 Acq On : 16 Jun 1998 10 :53 am Operator: hdg IT Sample : b806275-01 r2 Inst : GC #6 Misc : 2.5 ml Multiplr: 2 .00 IntFile : SURR.E , Data File : C:\HPCHEM\3\DATA\F16007.D\FID2B.CH Vial : 7 Acq On : 16 Jun 98 10 :53 am Operator: hdg Sample : b806275-01 r2 Inst : GC #6 Misc : 2 .5 ml Multiplr: 2. 00 IntFile : SURR2 .E Quant, Time: Jun 16 11:16 1998 Quant Results File: TPHG.RES i Quant! Method : C:\HPCHEM\3\METHODS\TPHG.M (Chemstation Integrator) Title! : TPH-G Water Method Last Update : Fri Jun 12 13 :39 :07 1998 Response via : Multiple Level Calibration `i DataAicq Meth : TPHG.M Volume Inj . • Signal #1 Phase : Signal #2 Phase: Signal #1 Info Signal #2 Info : esponse_ F16007.D\FID1A 1' 1 , I V. m I II 35000; I I I I 30000 �; 250001I �I r t it ) 20000a 1 � 11 J I , aL 15000 ' 1 c � 10000 I I ll i ��rV '' �iVf & 1V 1 \l J ` It xa € o f t a m a ILC «N N O • W O •m 3 Time 0.00 2.00 4.00 6.00 8.00 10.00 12.00 14.00 16.00 18.00 20.00 22.00 Response_ F16007.D1FID2B 1400001 ! II I`I I il 120000; 1 I lll tI 1 1000001 j { i a, i l „. 800001, I 1 i I 6000o 1 l I ii l 40000; I. II I I I I I N 1Il m N \ i , 20000Ait I I' �; 0f n I I ill 1 VI v :II m d ,� X N m v W p m N m J f I ~ to' N 3 p1 b X t m m Time 0.00 2.00 4.00 6.00 8.00 10.00 12.00 14.00 16.00 18.00 20.00 22.00 F16007.D TPHG.M Tue Jun 16 11:17B:6'089998 Page 2 Quantitation Report • Data File : C:\HPCHEM•\3\DATA\F16008.D\FID1A.CH Vial : 8 Acq On : 16 Jun 1998 11:23 am Operator: hdg Sample : b806275-02 r2 Inst : GC #6 Misc : 5 ml Multiplr: 1. 00 \( _. IntFile : SURR.E ./ Data File : C:\HPCHEM\3\DATA\F16008 .D\FID2B.CH Vial : 8 Acq On : 16 Jun 98 11:23 am Operator: hdg Sample : b806275-02 r2 Inst : GC #6 Misc : 5 ml 2/' --� Multiplr: 1.00 IntFile : SURR2 .E I' Quant Time: Jun 16 1 746 1998 Quant Results File: TPHG.RES :i Quant Method : C:\HPCHEM\3\METHODS\TPHG.M (Chemstation Integrator) Title : TPH-G Water Method Last Update : Fri Jun 12 13 :39:07 1998 Response via : Multiple Level Calibration DataAcq Meth : TPHG.M Volume Inj . .• Signal #1 Phase ' : Signal #2 Phase: Signal #1 Info Signal #2 .Info : -esponse_ ,ry F16008.D\FIDIA ill 1 T 1 1 ,,..... 1 1 : . 350001 I I i. �� I I i , , ! i 30000 i 1 i 1 i 250001 1 II I � I 200001 1 u I P 11 15000] i I f li �I I 11 }i 1 i 1 I -0 I , , 1i��I ' ,l0000? AIII , , ! \r". �� i\I r • 5000a I ' 1 ! I IL ~ C pa mLL m m j c c = m x PS o t a m I N Y N ._�. m 1 . . . , I , , . a , . N . fg , . , , #3 , , . , $ . . . q . , , ,� , . , , , , . , , , I , , , --__ ime • 0.00 2.00 4.00 6.00 8.00 10.00 12.00 14.00 16.00 18.00 2.0.00 22.00 -esponse_ F16008.D\FID2B , o' 140000 II 1200001 1 u7 I tl 100000 , ! I M Q 80000; 1' i I I60000 � ` 40000 Q I i I N �� (I ff m co I , hi 20000 r,!! Q i 01_11_14M\:-/ 0 o CL am N o o c a... C LL C C S. m v A w u d o K m m $ m !Time 0.00 2.00 4.00 • 6.00 8.00 10.00 12.00 14.00 16.00 18.00 20.00 22.00 F16008.D TPHG.M Tue Jun 16 11:41 4'T11998 Page 2 j Quantitation Report Data1File : C:\HPCHEM\3\DATA\F15028.D\FID1A.CH Vial : 28 Acq On : 15 Jun 1998 10 :31 pm Operator: hdg Sample : b806275-03 Inst : GC #6 Misc ! : 5 mL Multiplr: 1. 00 IntFile : SURR.E Data ,File : C:\HPCHEM\3\DATA\F15028 .D\FID2B.CH Vial: 28 Acq On : 15 Jun 98 10:31 pm Operator: hdg Sample : b806275-03 Inst : GC #6 Misc : 5 mL Multiplr: 1. 00 IntFile : SURR2 .E Quant Time: Jun 16 8 :06 1998 Quant Results File: TPHG.RES ' " Quant Method : C:\HPCHEM\3\METHODS\TPHG.M (Chemstation Integrator) Title : TPH-G Water Method LastiUpdate : Fri Jun 12 13 :39:07 1998 Response via : Multiple Level Calibration DataAcq Meth : TPHG.M Volume Inj . - Signal #1 Phase : Signal #2 Phase: Signal #1 Info Signal #2 Info : response_I F15028.0\FID1A a 350001 i I 30000j' I 25000- I . I 20000j . I 15000 1 t R il ik I 1I 10000? I I I l ` ? I 5000' kk-4-ALA r nti .,� ,11 l ! �`iJ . -., ' _ � = 2 a c o 1 1- LLm F- c c . 1 {, coo a m Time 0.00 2.00 4.0.0 6.00 8.00 10.00 12.00 14.00 16.00 18.00 20.00 22.00 esponse_ F15028.D\FID2B a; 140000 I, II a • 120000I. i, 1000001 I . 80000 . I 11 60000j I n 400001 I Q i 'A 200001, m e4 L _ 7 A -" 1 \-,-.A_AAI A 4 A,v\AN,,M \AP 0 j m m 0- �_O. N c �- Clm _ y c c a c m I. g r j s �! S L d X m A Time 0.00 2.00 4.00 6.00 8.00 10.00 12.00 14.00 16.00 18.00 20.00 22.00 F15028.D TPHG.M Tue Jun 16 08 :06R.C4?998 Page 2 Quantitation Report • Data File : C:\HPCHEM\3\DATA.SEC\F17007.D Vial: 5 Acq On : 17 Jun 1998 6:52 pm Operator: krl Sample : b806275-00 R1 Inst : GC #5 Misc : s llx Multiplr: 1.00 • IntFile : SURR.E . Quant Time: Jun 18 10:56 1998 Quant Results File: TPHD2.RES i Quant Method : C:\HPCHEM\3\METHODS\TPHD2.M (Chemstation Integrator) Title : TPH-D Rear Method Last Update : Tue Jun 16 12 :49:50 1998 Response via : Multiple Level Calibration DataAcq Meth : TPHD.M Volume Inj . • . Signal Phase : Signal Info Response_ F17007.D\FID2B i 1 m co . 950001 900001 I ; + I 85000 800001 75000- 1 j • 70000j �; 65000; • I i 1• 60000 i I I 55000 i 1 50000- 1. i 45000j ' i I ' ' i - , 40000-I. . :. . 1 . • ' I I, 1 j • ' I ,,:il 1 j I li,1 . ; _? 25000 i i ij ! � 20000' • I ' l 15000{ Ii 10000 l li 1j 'i� 5000 1 1 , ! I 11,1 01 -5000.1 I i -10000 o • O • z - o 2 , S m • C 9 Q P " t N m Time 0.00 2.00 4.00 6.00 8.00 10.00 12.00 14.00 16.00 18.00 20.00 22.00 24.00 26.00 28.00 B - 83 . F17007.D TPHD2 .M Thu Jun 18 10 :56:41 1998 Page 2 fl Quantitation Report • Data File : C:\HPCHEM\3\DATA\F17008.D Vial: 6 _ Acq Or : 17 Jun 1998 6:52 pm Operator: krl Sample : B806275-01 rl Inst : GC #5 Misc : s llx Miiltiplr: 1.00 IntFile : SURR.E ' Quant 'Time: Jun 18 11:04 1998 Quant Results File: TPHD.RES -: Quant 'IMethod : C:\HPCHEM\3\METHODS\TPHD.M (Chemstation Integrator) Title : TPH-D Front Method Last Update : Wed Jun 17 16:29:05 1998 __ Response via : Multiple Level Calibration DataAcq Meth : TPHD.M Volume Inj . Signal Phase : Signal Info response_ ' F17008.D\FIDIA 95000; , j 1 90000 _ 85000 4 I I •• 80000- E 750001 ' l 700001 650001 • 60000 j , I, 1 ` • I . 55000- { • I I I Iil ` I 50000- • 9 I 45000, r; ,I , 411 • , I^J i 1111, l' h;' 35000- I1 ' t 6 , 30000 I I IF � ,� I , 25000 i j IIII I )(foil 20000- I 'I: '1) l ' ili kj 15000 I glrI "ti 10000-1 i I ti 114041 ^ .% f I' Jh iIII 50001 UIj ' I ,, 0. I -5000i -10000. C o g o re • o Q 88 2 5 i I -� i T �_._"'_ U Try. Time 0.00 2.00 4.00 6.0.0 8.00 10.00 12.00 14.00 16.00 18.00 20.00 22.00 24.00 26.00 28.00 B - 84 Page 2 F17008.D TPHD.M Thu Jun 18 11:04 :21 1998 g . Quantitation Report ' • Data File : C:\HPCHEM\3\DATA\F16052.D Vial: 35 Acq On : 17 Jun 1998 7:38 am Operator: kj Sample : b806275-02 Inst : GC #5 • Misc : w Multiplr: 1.00 IntFile : TPH.E Quant Time: Jun 17 14:10 1998 Quant Results File: TPHD.RES Quant Method : C:\HPCHEM\3\METHODS\TPHD.M (Chemstation Integrator) Title : TPH-D Front Method - Last Update : Wed Jun 17 14:02:48 1998 Response via : Multiple Level Calibration, • • DataAcq Meth : TPHD.M Volume Inj . : Signal Phase : Signal Info . Response_ F16052.D\FID1A II j 95000 l h ! is 90000' • 850001 I I f 1 h I 80000 i ! i _F 1 I li 750001 I • I I I q 70000 i I. 650001 I 1 is 600001 1H, I II i i I 550001 ' 1 ' I ! IIiti 1 II 1' 50000• .1 I 1 j ':I F „ II 450001 j I ' r II ,j II,il ,I 400001 i II ,II , i i I • i ! i li I i II i I ,35000- R t I .I ;i I: 30000, ! f i; '� I i � ' j* . 14 II �I III 1 ! . 25000i Iijh f ,I' 1I 1 j I� ti :i: 200001 I., r I.;• .iil j i 4 I • i; I 150001 I Oil I� k1II .1i , ll ' lI I IU i �`` Iy I f d 5000+ I I!II �It 1 J IJI�.'+I4'tkiii� ' III � I�,1. 111YI I` j 1 i�. �. —h _'' of -5000-I ! -100001 g 8 • • . . i— c4A f. z, ; , . , , , i, , , , ,,, . , , , . . Time 0.00 2.00 4.00 6.00 8.00 10.00 is2.00 814.00 16.00 18.00 20.00 22.00 24.00 26.00 28.00 i F16052.D TPHD.M Wed Jun 17 14:10:17 1998 • Page 2 Quantitation Report Data File : C:\HPCHEM\3\DATA.SEC\F16053 .D Vial: 36 Acq On : 17 Jun 1998 8:17 am Operator: kj Sample : b806275-03 Inst : GC #5 Misc : w Multiplr: 1.00 IntFile : SURR.E Quant Time: Jun 17 12:31 1998 Quant Results File: TPHD2.RES . Quant Method : C:\HPCHEM\3\METHODS\TPHD2 .M (Chemstation Integrator) Title : TPH-D Rear Method Last Update : Tue Jun 16 12:49:50 1998 • Response via : Multiple Level Calibration DataAcq Meth : TPHD.M , 1 Volume Inj . . Signal 'Phase : - . Signal Info . response_. F16053.D\FID2B 1 j I I II I 95000' I I' • -• I I II j ! 90000i ! I ! I .! I f „ II 85000 i i - II r_ 1 I � Ii .l � ''It 1 80000: II { I II 75000i I I' I 70000 I 650001 60000'. 1 I 550002 i 1 h I 50000- I ' 1 45000-1 I 1 II • j I 1 40000 I J I� I I • I 1---: 350001,- 1 ij I, 1 , ! I ! 1 I 300002, ! I I • I I 250004 ! • I 1 j Illii'1 20000 ! 15000 . + till Iiiii 1 l0000a 11 II.1 1i �,�+ I I 5000 `� f II \ I I 'id i I!+11 l0.111�111I+,� t I A41 f ,r f d` 1 1! ! v•+..: u,.,,,, .r ti .,rill •• 0= ! ' ,I 1 -5000 i -10000: Li ij ahi $ - ; . , 2, 1 , i4 , z •q . . . , , , . , , P .3 . r5, . . , . , , , Time 0.00 2.00 • 4.00 6.00 8.00 10.00 12.00 '14.00 . 16.00 18.00 20.00 22.00 24.00 26.00 28.00 , B - 86 F16053 .D TPHD2 .M Wed Jun 17 12:31:33 1998 Page 2 : NORTH 18939 12Uth Avenue N.E.,Suite 101,Bushell,WA 91i01 I-9508 (425)420-9200 FAX 120-9210 L4ai i CREEK% ANALYTICAL East I I I15 Montgomery,Suite B,Spokane,WA 99206-4779 (509)924-920) FAX 924 929() • 9405 S.W.Nimbus Avenue,l3eavertun.OR 97008-7132 (503 1 906-9200 FAX 906 9210 Environmental Laboratory Services Q CHAIN OF CUSTODY REPORT Work Order # u 8 aG 2 7 REPORT TO:1 /'\\__ ex) (l 1j + i IU /,�/� - y INVOICE TO: TURNAROUND REQUEST in Business Days• ATTENTION: .;xi� C('I. \ �C, ATTENTION: S��-( Organic&Inorganic Analyses 10 7 5 4 3 2 I Same ADDRESS: ADDRESS: Day Q�] Slalwl:ull [2" OM—C�'+ G0 C` Fuels&Hydrocarbon Analyses (I' ��—\� 3•J 2 I s.m� PHONE: \ -] ) •(Cf)(— (r C)C n FAX: ( ')(•—�1 .L0 P.O.NUMBER: NCA QUOTE K: thy ''^^ a :ud PROTECT NAME: ✓PL_ Analysis (NV Request: OTHER PROJECT NUMBER: D V/ L/— e� L _Q cn - `,t\Q- , sK��tr ^ �� '� / C •Turnaround Requests less than.,x,ndurd mar incur Ranh Charges. " SAMPLED BY: /> r-t- <11�t%^ �� Z CLIENT SAMPLE SAMPLING NCA SAMPLE ID MATRIX 'N OF • IDENTIFICATION DATE(IIME (Laboratory •Usc Only) '� - (W.S.A.0) CONTAINERS COMMENTS I. in(A) - • 1 8 R1pg 1 r C 2 3o i3' 7600 2. IAA LO ( � \?CO —p ( 4- "`co . _ - ' 3. "LA.Lt..) — (----) l —02 —,L 'L . 4. 1(,( Lt.) — 1. .t.:, - o .,I- A , • 3 7. _ , 8. . . . . . . . .. . . • 9 - III. l _ `` �j RELINQIIISIIEDBYuu.W..r �� C� "DATE: 6I6(� RECEIVE;BYtssn,n.,a:.. DAIE:6/h/4( I ,67 7 PRINT NAME: 1 ..�"Y S - \�c7• FIRM: G''�� TIME: y/J PRINT NAME: ��tn�C,c,"✓� FIRM: �'C ( TIME: • RELINQUISIIED BY(So w+.Irt . DATE: RECEIVED BYtst.w.rn:' DATE: PRINT NAME: FIRM: TIME: PRINT NAME: .. - . FIRM: ' ' TIME: ADDITIONAL REMARKS: PAGE OF ,I I II 1 -• . ' 1 r �rf , j I ' // l. ' ' , --`! r \ /' ) ,i' I 1 ) • ,H 1 ,\ 1 1 / I / _• `I,�.G r I 1 I / 1, j ` \\ ,, 1 ? 1 / ,1~ ` / i • 1. I / 1 I ` ( I ' \ 1 \ �` ' I -3 / r ! / l / • . \ '1\ ''. 1 a l I ��J ,r • f 1' / 1 1 % / ! (,I \ I I. \,_ 1 lit I 1 ., /I r' /I \ / ) • ll ,i \I,`r I '`I I,.' \ I / APPENDIX C \ \ / J I ,. , , \' ,/ -i- r / `f 7 • \� I 1 /` \ i /1 i\ ` ( . .%; \J. %,• \ /- Cti I t l } /` ' I ' 1 I ` ` , i + \ \-..,., I -'I 1 7 , , /• , `` I .- i \ I , • h •J ' - \ 'I \ - ( 1 ' l I f- ,. / , \' • 7 r \ i ` 1 1 \ ./` / I / s 1 . ' \__ + '-• _r' A 1 \ ) ''• I f ' `' •) ,,, L,` / 'I t`' _ 1 .... r; - ' \ +• / ' \ i • \ I ) • I r , - • \, I r / I i (• )\ I I' ,., 1 1 i '5 / _ 1 ) I a I'I i I \\ ' \ \` ICI •I; , �, , .\ ,' I \ \ C / . \ ./ / ', - 1 r 1, \ •\ I - . r / r . i APPENDIX C USE OF INTERIM TPH POLICY INTERIM TPH POLICY EVALUATION FOR PETROLEUM IN SOIL General Our studies at the site indicate that weathered gasoline- and diesel-range petroleum hydrocarbons are present in subsurface soil generally within the zone of water table fluctuation. The residual petroleum concentrations present in soil based on May 1998 sampling were evaluated with respect to MTCA Method B using criteria and methodology in Ecology's Interim f-- TPH Policy. The purpose of this evaluation was to determine a site-specific cleanup level for Petroleum in soil that is protective of the direct contact exposure scenario. A site-specific MTCA Method B cleanup level was calculated because the MTCA Method A cleanup levels for total Petroleum hydrocarbons in soil cannot be adjusted to account for specific properties of petroleum Products, such as the possible absence of the more toxic constituents (i.e., volatile and/or carcinogenic fractions of hydrocarbons). The Interim TPH Policy allows for calculation of a site- specific MTCA Method B cleanup level for the petroleum product in soil based on the actual - constituents present in the petroleum. The Interim TPH Policy method for calculating the Cleanup level is based on the proportion of aromatic and aliphatic hydrocarbon fractions present in the soil based on VPH and EPH analyses. Evaluation of Soil Direct Contact Risk Petroleum products contain multiple fractions and individual chemical compounds that have associated noncarcinogenic health effects. MTCA stipulates that individual hazard quotients associated with these fractions are additive, and that the total hazard index (the sum of all individual hazard quotients)should not exceed 1.0 for the risk to be considered acceptable. The hazard indices calculated for the residual petroleum in samples AS-1-13.5 and MW-43- 12, assuming a residential exposure scenario, ranged from 0.39 to 0.55 as summarized in Table 4. The actual hazard index calculation for sample AS-1-13.5 using the VPH and EPH data is shown kn Table C-1. Using the Interim TPH Policy calculations for noncarcinogens, the residual petroleum at the concentrations and fractionation represented by these two samples does not pose a risk to human health by direct contact. Benzene and carcinogenic PAHs (cPAHs) were not detected in samples AS-1-13.5 and MW-43-12. To evaluate potential carcinogenic risk, we estimated the carcinogenic risk for benzene and CPAHs assuming a concentration for each of one-half the laboratory detection limit, as shown in Table C-1. The resulting individual and total carcinogenic risks are significantly less ' ' than the MTCA Method B threshold of one in one million. Thus, the existing concentrations of these carcinogenic constituents in soil are not a risk to human health for direct soil contact in a residential scenario. G e o E n g i n e e r s C-1 File No. 0894-002-00/081198 M1 I MTCA Method B Soil Cleanup Level Based On Direct Contact ! Table C-2 presents a summary of the MTCA Method B cleanup level calculations using the 1VPH and EPH data for samples AS-1-13.5 and MW-43-12 based on the residential direct contact exposure scenario. Based on the information presented, the MTCA Method B cleanup level 'proposed for the site is 3,800 mg/kg, rounded down from the most conservative (lowest) concentration of the options shown. By definition, the cleanup level is the TPH concentration which produces a hazard index of 0.99 with the same proportion of aliphatics and aromatics as the site samples. This calculation is based on the residual direct contact exposure, the reference dose values, and the total aliphatic and aromatic compound fractions in the AS-1-13.5 sample. The MTCA Method B soil cleanup level calculation is presented in Table C-3. Evaluation of Soil to Ground Water Risk Ground water chemical analytical data for the site confirm that residual petroleum in soil does currently pose a risk to ground water. A preliminary evaluation of ground water risk using methodology prescribed in the Interim TPH Policy was performed to assess whether ground water would exceed the MTCA Method A cleanup level if TPH in soil meets the proposed MTCA Method B cleanup level based on direct contact. A predicted TPH concentration in ground water was calculated.using Raoult's Law as described in the Interim TPH Policy. To perform the Raoult's Law calculation, the assumed TPH fractionation was the fractionation for sample AS-1-13.5 using the VPH and EPH data that produced the proposed MTCA Method B cleanup level. Table C-4 presents the Raoult's Law calculation based on these data. This devaluation predicts that ground water would not exceed the MTCA Method A cleanup level of 1 (milligram per liter (mg/1)with the TPH distribution shown. However, actual site data contradict this prediction. One of the variables used in the Raoult's Law calculation is the dilution factor (DF) which ,accounts for dilution of pore water between the contaminant source area and a "hypothetical" receptor. While an actual dilution factor is site specific and dependent on many factors, the Interim TPH Policy allows the use of a default dilution factor of DF=20. We understand that Ecology plans to provide guidance in the near future on the determination of site specific dilution 'factors. For comparison purposes for evaluation of residual TPH at OPLC Maplewood site, the :use of a dilution factor of 1 (DF=1) in the Raoult's Law predicts that concentration of TPH in ground water would exceed 1 mg/1 with the assumed soil TPH fractionation of AS-1-13.5; a dilution factor of 10 (DF = 10) in Raoult's Law predicts that concentration of TPH in ground water would not exceed 1 mg/1. The Raoult's Law methodology for the soil to ground water pathway cannot be used to "back calculate"a concentration of TPH in soil that is protective of ground water. 1 G e o E n g i n e e r s C-2 File No. 0894-002-00/081198 INTERIM TPH POLICY METHODS , The MTCA cleanup regulations require that the evaluation of soil contamination and determination of soil cleanup levels be based on consideration of (1) direct contact, and (2) protection of ground water. Similarly, the Interim TPH Policy requires consideration of both components in evaluating petroleum contamination and arriving at a soil cleanup level. Identification of the hydrocarbon fractions and quantification of their toxicity and transport characteristics (using surrogates) were required to evaluate the level of contamination and calculate a soil cleanup level for the site's petroleum constituents in accordance with the Interim TPH Policy. Considerations of current and future site use also were necessary to apply the !appropriate MTCA method. For this site, it was assumed that the highest potential beneficial use of the property is residential; therefore, MTCA Method B was used for evaluation of contamination and in calculating a soil cleanup level. The MTCA Method B formula for evaluating soil contamination and calculating a human health risk-based soil cleanup based on direct contact, as applied in the Interim TPH Policy, considers only the soil ingestion exposure pathway. This was considered sufficient for. contamination evaluation and calculation of a TPH cleanup level in soil. Soil-to-ground water ,transport of and subsequent ingestion of ground water also was considered in our assessment. The reader is referred to the Interim TPH Policy (Ecology Publication ECY 97-600) for background information and assumptions that pertain to the use of the Interim TPH policy. TOXICITY Petroleum products typically are composed of thousands of individual.chemicals. Toxicity criteria that relate the intake(dose) of a chemical to a response are available for only a handful of ,the individual chemicals that may be present in petroleum products. A cleanup level based on toxicity cannot be calculated for individual chemicals (or for petroleum products) unless a toxicity criterion, such as a reference dose for a non-carcinogen or a potency factor for a carcinogen, is available. The Interim TPH Policy uses a surrogate approach to account for compound-specific data that is not yet available. In the surrogate approach, a reference compound is identified as a representative of individual petroleum hydrocarbon fractions. These reference compounds are selected because their toxicity is relatively well characterized in that either a reference dose or potency factor is available, or a dose-response value can be developed from available toxicity data. The toxicity criterion identified for the reference compound is then assumed to represent a surrogate toxicity criterion for the associated hydrocarbon fraction. For the purpose of identifying surrogate toxicity criteria for hydrocarbon fractions, petroleum hydrocarbons are divided into broad chemical classes. Surrogate toxicity criteria are then identified for each group of compounds using the methods described above. Ecology has selected one compound representing the aliphatic fractions (n-hexane)and one compound representing the aromatic fractions (pyrene) that likely have the most conservative toxicity criteria. Surrogate criteria for other hydrocarbon fractions are likely multiples of these. Until sufficient data are G e o E n g i n e e r s C-3 File No. 0894-002-00/081198 made available for developing surrogate toxicity criteria for the other hydrocarbon fractions, the 'Ecology Interim TPH Policy requires that(1) all aliphatics be grouped together, (2) all aromatics • be grouped together, and (3) the aliphatic and aromatic groups be represented by the toxicity 'criteria for n-hexane and pyrene, respectively. This surrogate approach was used in our calculation of the Method B cleanup level in soil based on direct contact. The surrogate method used in the Interim TPH Policyfor evaluation of contamination and in g 'calculating petroleum hydrocarbon cleanup levels does not account for the noncarcinogenic toxicity contribution of ethylbenzene, toluene, and xylene. It also does not account for the (carcinogenic health effect contribution from benzene and carcinogenic PAHs that may be present lin the petroleum product. These compounds are quantified and evaluated separately, and cleanup levels are calculated for each compound using their specific reference dose or potency factors. Although a reference dose value is not available for benzene for noncarcinogenic health effects, these health effects are accounted for in evaluating the contamination and in calculating the TPH cleanup level by the surrogate approach. The Interim TPH Policy assumes that benzene 'has noncarcinogenic health effects as well as its carcinogenic health effects and assumes that the reference dose for benzene is equal to the surrogate value for aromatics(0.03 mg/kg/day). The hydrocarbon fractions and their associated surrogate toxicity criterion values for the Ecology Interim TPH Policy are summarized in Tables 2 and 3. The hydrocarbon compounds are all considered noncarcinogenic, based on the toxicity information currently available. Therefore, only reference dose(ORfD)values are provided. FATE AND TRANSPORT The fate and transport of hydrocarbons in the subsurface is a significant component of the Interim TPH Policy. Similar to the approach discussed above for toxicity, surrogate physical and chemical properties of different hydrocarbon fractions are used to represent and evaluate hydrocarbon movement through and into soil, water and air. Based largely on studies completed by the National TPH Criteria Working Group, the Ecology Interim TPH policy uses six aliphatic fractions, five aromatic fractions, and benzene and toluene in evaluating the fate and transport of petroleum products. The TPH Criteria Working Group grouped the numerous TPH constituents into the aliphatic and aromatic fractions based on the similarity of their chemical properties. Constituent chemical properties such as equivalent carbon number, soil-water sorption coefficient, organic-carbon partition coefficient, octanol-water partition coefficient, and Henry's Law Constant, dictate how they are transported in different media and where used to select the hydrocarbon fractions. Although MTCA requires that each potential transport pathway of concern be evaluated, the Interim TPH Policy specifically mentions two transport pathways: (1) soil-to-ground water and (2) soil to indoor air confined space. An evaluation of the soil-to-ground water pathway 'determines what petroleum concentrations in soil may be left in place while being protective of G e o E n g i n e e r s C-4 File No. 0894-002-00/081198 ground water. Four methods of evaluating soil-to-ground water pathway are described in the 'Ecology Interim TPH Policy: Multiplying the applicable ground water cleanup level by 100 (this is the existing Method B approach; e.g. the Method A.drinking water concentration of 1 mg/1 would equate to a soil cleanup level of 100 mg/kg). Soil/pore water partitioning (Raoult's Law) and ground water mixing. This approach was selected to evaluate the soil-to-ground water pathway at this site. Empirical Demonstration. In this approach, soil is collected from the area of suspected hydrocarbon release and submitted to the laboratory for leach testing. Leach testing basically consists of saturating a column of soil with water, collecting the leachate from the base of the column and analyzing the leachate for the chemicals of concern. After applying a dilution factor, the resultant concentrations compared to ground water cleanup levels. 'LUST Matrix. The Interim TPH Policy allows the use of Ecology's Method B LUST Matrix dated October 30, 1992. The LUST Matrix is used to calculate a petroleum-contaminated soil cleanup level that is protective of ground water by evaluating five site specific parameters; ground water depth,rainfall, soil type, receptor distance and contaminated soil area. Specific methods for evaluating the soil to indoor air confined space pathway are not addressed in the Interim TPH Policy. -J G e o E n g i n e e r s C-5 File No. 0894-002-00/081198 TABLE C-1 RESIDENTIAL HAZARD INDEX AND - CARCINOGENIC RISK FOR DIRECT CONTACT SAMPLE AS-1-13.5 EPH SITE NAME CITY,WASHINGTON Residential Detected Soil Compound Concentration' (mg/kg) ORfD Factor Multiplier HQ Total eliphatics 1344.9 0.06 1.25E-05 2.08E-04 0.28 Total aromatics 250.5 0.03 See Below See Below See Below - Benzene 0.025 NA NA NA NA Ethyllienzene 0.025 0.1 1.25E-05 1.25E-04 0.00 Toluene 0.025 0.2 1.25E-05 6.25E-05 1.56E-06 Xylenes 0.05 2 1.25E-05 6.25E-06 3.13E-07 Total aromatic+B-E-X 250.5 0.03 1.25E-05 4.17E-04 0.10 Hazard Index .... 0.38 .. elect COttCeTltrx'ti06:01080E;iSQ td :Dr:::f ch5tii4Oie ie 11'' ;V'I.....% ..... 0.. .d ...:::::::::::::.;••:::•::.::•:.;;;.:.;:.;:.: ..........:.� .... ............................................:.::.1:��;".�,:�tlt.,� ,:i::Xi�.•S:�S;;�ib�;:dei��iteYt..�::::i>:;:;::i;i:::::::::%:::::;::i:;::::i:::i::i: �• . .. 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I{7lFt ......................................................................................... �> gEaE.rsferenca�os�•• ..:�i:{YCFv::.�.Y'.C:�Gi::iy( :;'�i:y::;:�:�ii':ii:?•i::;::'i?i:4i}ji:j:� i{':'':••y::;:;:;:};:�;:?�'.��r��%��jY:{;i{:;{3:j::;i'.:-i:}}•{••�'�•j}:iiii•>::iii:j:•iiiii:�iti:i:;i'�'��?��:tii:•:•iiiii:�:�i:�i�•��:•'L•}iiiiiii:?;.�iii:�{•is4:•iiii:Li�i:��?��•�•�•:;:j!j:::��:��:: ri { I I Detected Soil Concentration OCPF(kg- ,Carcinogens (mg/kg) day/mg) Risk Benzene 0.050 0.029 1.45E-09 CPAHs• 0.005 7.3 3.65E-08 Total Ris k 3.80E-0 • 8 ::-'The sl�t+t a€�eta d o� (rats s:> ;tt :ses►ei�carcEaogar a pvlynt ar romatfrE >> >` .:...::....:...:....fc;:sc3rn:at.benz..n..nsfc;a»d.N.�l;nsfc...::.:..;:..:..;.:::.:;_::..:;.;•::::::.:;. :..::.:.::....;.:;:;:•::.>:•;:;>::<::<:::> P:\unocal\cleanuplevelas-1 eph.XLS\HQ-Hazard Index&Care.Risk I ! 1 . •• • • . . . • TABLE C-2 COMPARISON OF VPH/EPH DATA, HAZARD INDICES AND 1 RESULTING MTCA METHOD B CLEANUP LEVEL CALCULATIONS OPLC, MAPLEWOOD NEIGHBORHOOD RENTON, WASHINGTON Sample Name AS-1-13.5 MW-43-12 Description VPH/EPH WTPH VPH/EPH WTPH Total Aliphatics(mg/kg) 1,604 1,378 Total Aromatics(mg/kg) 515 242 ..,..... . TPH(sum of aliphatics and aromatics by ITPH Methods) ...„.! !!.! (mg/kg) 2,119 1,629 TPH(sum of gasoline and diesel hydrocarbons by WTPH . . Methods)(mg/kg) ........... 1,890 1,627 Hazard Index(based on ITPH testing of sample) 0.55 0.39 MTCA Method B Cleanup Level for TPH(mg/kg) 3,823 4,117 Notes _ . • • VPH/EPH=total aliphatics sum and total • !. ..-!!!!! ' - aromatics sum for a8frachops;:for fractions quantified by bOth'::MethOdSi.the highestdbhcentratIdnii*aueed WTPH=sum of gasoline-and diesel-range hydrocarbon by Ecology WTPH-G and WTPH-D P:\000to099\0894002\finals\0894002t c-2.xls • • • • • TABLE C-3 • MTCA METHOD B SOIL CLEANUP LEVEL CALCULATION BASED ON RESIDENTIAL DIRECT CONTACT EPH DATA FOR AS-1-13.5 SITE NAME r CITY, WASHINGTON Soil Residential I, Conc. -7:ompound (mg/kg) ORfD Factor Multiplier HQ otal aliphatic 3,462 0.06 1.25E-05 2.08E-04 0.72 (Total aromatic 645 0.03 See Below See Below See Below ;enzene I 0.064 NA NA NA NA thylbenzene 0.064 0.1 1.25E-05 1.25E-04 0.00 Ii oluene 0.064 0.2 1.25E-05 6.25E-05 0.00 Yylenes I0.129 2 1.25E-05 6.25E-06 0.00 otal aromatic+B-E-X 645 0.03 1.25E-05 4.17E-04 0.27 -:lazard Index :x`<<: <:>`> ; > ::.>;:.;:.;:;;:.:;:,>:::<:<.:::<:<<:< > :<<: 1 ,ITCA Method B Cleanup level for TPH I 4,107 6 ahti .fed�t:islFe"f..Hco`."`e``"`he ntr�fiois >» >: >:» :> >: :> : :::: .................................................... .. ...............P••.......................... . um.of.atr hatresndarotnst�cs hich:«>:: : :'''; ::::::?::<::: :�� :>:s :>s'.> escults.l a Hazaid:Index•ot 0 wtt'same ro ionsaf:ah tactic ,:arc ................. ... 99... f#. .. r# s ..mahc ��:and:9E't'Xasfhe:<:::.::::>::a::>::.:::>:'>:': :::.>:::.:.:::>::::>:::: :.>»:.::::::.: :::.:: sate:.::.pl::.r;;;:•:-...:i ` ,::::::::: : :ii::: :� :,::Ki::::::-•::%::i:::::: is ii:i:::::i:i:::i iiii �:> 'iiiiii: :n is : iii Gi:: i: :2:::: >':: : iiu .e:tested:-......................................:-..:.........:.:::..::.:::::::::itip.::ig.. .:::::.:::::::i$R:...::- .....:..... ....... ........... ............... .:..::: , • . �:. .:..:::..;.:...;.::;::,.:":::::( . rorarYon:: onceiitratten:=::::>:::>:::::''''. :::i :: :::»:.>::x:::::>:: .::r:>:•:::::.;:.: ..4.10 .�n ::.,::::..:_.::::,:::,:....TQ#.:C:.:ItAha,t�.�►.a.:h.n.:::.::.::..:.::..:.:::�.::::..:.............-.... . .-..:. .::......:::.:::.::::::..e4�3�3.::�::: :: :.:: ::.:::-::::::::::.- ... ......... --:..:;;.::::::..::..: :.:;.;.:,U'.#'.i7tc11�Cflti'Tat1�`#rBCtiLNi » :i::ii:ii>'>::::isi::: :i:>::>:::i:i::i::i::i' � .:: ;:.i:.:::.::.::.::.:�.;:.;;;.:.;,,...:::::.. ...:::::,..::.. :.:: ::Di:•�,:.• ::::+:; r;:''::,::;:;otio::::' i '?:"%:':= :: s : + ` 2: ? r:: t >% >' 'D `:; < : :: :: % is : ::i:> ' :, T�ztai benzene fraGboJi..::.:. : ...::::.;....::::::::::.::::.��.-� ... ..::....... .:: ..::.....:.....:... ,6.Totat:eth kie 'e:. .,.........:....::::.::.;:.;;;:::.;;: • •>;:.;>; s:.;;::.;;:.;:.: : :::.;:: ::: ... � :.:;;:.::.;:;•.,.. E{::::�:::::::::>::::.>::>::::: Tflta.t 1 .nefracti �..... .. ... :.::...::..:<:.0.00-.,6.:;;:: .:;:.;::::: :.:::.:;::;:.;:.;::.;:: ;::.::.;:.;:.:: .:;:>::::::::.;:•> a�.T4xal: ens•.f ac o:�-::::::.:::::.:::.:: ::..0.. ..�:.�. ::;::i.-:::.::-NiidTot'S[iirflmati +B:E tracttort::::::::::iii:i:::.::.:: ..::. ..:::::::::::...:::.:::::::;::.:.�;,•.,.:1 7i3..b. ..• . .,.:...,-.:*:i:�:..:.:: --.: ....... ... . .- ::.. ::::;;::::::<::<::::: :::::::::>:mg/J..::miHt ......s er:.icilo rat?.:. .:.;::::.;::: :::::;:.:..:::...: .......--......:-.::......... ..-.... ::::;Oi2fl3'=°orat:l'efeie cedose:::>;;:;:: :::::Far..tF7:= estta:;acto.`'' i 3 > ? `2::: : '' : : ::':: f'< ` ::';?:': :: `::':.:::: ii >:::::: :: ?::- ::::::. ;:: : ;. r C then t fa or :E iMt l 1 `iresi: :, :` ,f.,:E<E: < '>...„„„,„.„ i s:i: :::,„ i i 7ii i:.:::::r?:i:: :i:: :: :„.:::::::::'::i :ji :::j ` j :nisi :::::::::::::::::; tt�paer �actor!(3RfD ...:.:............ i?HC1:::=1 >::>;•;q.;:otie'E:::oi iiiig.;::::> rati::r >::;;.:; _:ctor)::":f >' ?: < < <' >i« <> «::i:::': > > <.:: ':c`# . .azard uotren sotteanceruraho>3:m . factor Rfn ............................... K.K .... ... .. :::: :.:::.: :. .. to . . rol.um:h dr..carb.ns.>:>.>>;< ::>:::;: > :<::<«< <:::;::>:�::> _>«:: «::<�::>:>::<«;:::<=< :::>::>::::<::::>:<<:;r::�: 1 TABLE C-4 • PROJECTED TPH CONCENTRATION IN GROUND WATER • SOIL-TO-GROUND WATER PARTITIONING USING RAOULT'S LAW VPH AND EPH DATA FOR SAMPLE AS-1-13.5 OPLC, MAPLEWOOD NEIGHBORHOOD RENTON-WASHINGl ON - • Effective Concentration2 %of Solubility CgWtr Fraction (mg/kg) Mixture MW(g/mol) mMoles X S(mg/I) (mg/I) DF (mg/I) Aliphatics EC 5-6(5.5) 0 0.00% el 0.0000 0.00 28 0.00000 20 0.0000 EC>6-8(7.0) 112 6.24% 100 0.0011 0.11 4.2 0.47052 20 0.0235 EC>8-10(9.0) 114 6.35% 130 0.0009 0.09 0.33 0.02895 20 0.0014 EC>10-12(11.0) 240 13.37% 160 0.0015 0.15 0.026 0.00390 20 0.0002 EC>12-16(14.0) 668 37.20% 200 0.0033 0.33 0.00059 0.00020 20 0.0000 EC>16-21(19.0) 365 20.33% 270 0.0014 0.14 0.000001 0.00000 20 0.0000 TOTAL ALIPHATICS 1499 83.49% Aromatics Benzene(6.5). 0 0.00% 78 0.0000 0.00 1780 0.00000 20 0.0000 Toluene(7.6) 0 0.00% 92 0.0000 0.00 520 0.00000 20 0.0000 EC>8-10(9.0) 0 0.00% 120 0.0000 0.00 65 0.00000 20 0.0000 EC>10-12(11.0) 18.2 1.01% 130 0.0001 0.01 25 0.35009 20 0.0175 EC>12-16(14.0) 161 8.97% 150 0.0011 0.11 5.8 0.62269 20 0.0311 EC>16-21(19.0) 97.2 5.41% 190 0.0005 0.05 0.51 0.02610 20 0.0013 EC>21-34(28.0) 20.1 1.12% 240 0.0001 0.01 0.0066 0.00006 20 0.0000 TOTAL AROMATICS 297 16.51% TOTAL PRODUCT 9 0 17 5.50 00.1 000/ 0.0100 0 1. 0 I : 0.0751 Notes 1Chemical analyses by North..Creek Analytical Laboratory reports m Appendix'.: �Tlie highest concentration for each fraction detected by either VPH or EPH Fractions not detected are assumed as zero for tFie purposes of this calculation.. let e : . - XE C y=mole fir aactinon c ar beon ra • - : :..:... , ::MW=:molecular,weight .. ' ::>' �::_ . ,.,;';mMoOili i: >.S=solubili bF=dilution, actor dwater.(projeced) ,,.::::.....::.:C ,;=concentratoningroun ::: k mill ram r.kdo m .: ::::.:m emoleglmot gramp :::...... ••mg/I_=milligrams per.liter;;;:l P:\0894002\Itphdata.xls\Table C-3 > _ , ' \; r'-, \ —/ c - , i , — — \. - — I. / , •1 , 1 I / • /C / �\ I l ., 1 1 /; ,/ I.\; / / I _ 1 ' --.) I H . I t , \ / I \ ._ ' \ 1 _ • I 1- 1 \ t K. '"t — K . ,.' 1 \ ` / j / i ` / I \ \ ) • :\ . H ` - ) • \' •J \ , 1 }• ' .1 It J . . . 1 \ ' . / ' - ' f — ,\ /' - \ / , 1 , / i , \ ( f ) `\ i ' ' - ' (. • / ' 1 ' -, 1. , 7 SI / / I \.\.— i. N 1 ) -\ \ "l\' • y t \ ,\ \ . \, ( ) , i i < -I. I, '- , ' / , - - ,� •1� , , _ / I 1 .I' r' 1 , , 7 / I. i \ 5 I 1 \ . \ , - \ /, '1 ' / b I 1 \ ' 17 • 1 _ is . / \'l \v \ j . / - ` „ r , 1'VI i I 1` ,) , . , _.y `�/ 1? h ,i i 1 L . ) \i 5, I ! j / • ; \_ 1 - 1 j i 1 I i' /I 1 /� ., 1 . '< ii • , \ \\ / - ,I `f 1 / / \1 ,'i / (; ;/ / . li.'l ' .i • 7,, /�a-XION3dd_ t�'`1 `)" , I ` ., i ( i I i / 1 . ' I Iri / - ' ' \ 1 1 / 1 1 ,!, , — " ' / ( ' 1 ' ' 1 \ i \-- -,K )`\ t i / I V . / \`-- `,/' \ / ) / i ' / .I. 't i 1 1 i I • 1 • 1 _\ i 1— ,1 , li/ , / i i"/ i ' ' \ j, , - I ' J. •_)rl/ - \ i,' ' . k. i \ _, . ' ' ., • i .. ' \• ' • • - \t \ / — ,- IJ— - I J I 1 \ 1, i I y\ \11 \ 1 ; ' ' , \ 1 — / 1I 1. / / I, y .I - ' " -- ; ` , .✓f I \ APPENDIX D DESIGN CALCULATIONS FOR AIR SPARGING REMEDIAL OPTION MINIMUM AIR INJECTION PRESSURE Assumptions: • Base of sparge well situated at approximately 25 feet bgs, approximately 15 feet below static high water level(high seasonal ground water). • Pressure necessary to overcome static head of water at seasonal high ground water levels equals the minimum air injection pressure. Calculation: • Minimum air injection pressure(psi)= 15 ft H2O x 0.43 psi/ft H2O=6.5 psi RATE OF VOLATILES (TPH) GENERATION IN SOIL AND GROUND WATER Ground Water Assumptions: • Darcy's law is applicable to ground water flux through treatment zone: Q=kiA • Average hydraulic conductivity,k k=0.32 ft/min • Average hydraulic gradient, i,between block valve and Cedar River: i=0.0053 • Area of air sparging volatilization influence with 15 by 100 foot well spacing: (square feet)= 15 feet long x 15 feet deep=225 ft2 • Average contaminant concentration(gasoline and diesel-range hydrocarbons)in ground water in air sparging zone of influence(based on 1998 average concentrations detected in MW-38,MW-18,MW-19,MW-20 and MW-14): C= 5mg/1 Calculations: Ground water flux through air sparging zone of influence: Q=0.32 ft/min x 0.0053 x 225 ft2 x 1440 min/day x 7.48 gal/ft3 =4111 gal/day Contaminant volatilized per day from ground water: RGw=5 mg/1 x 572 gal/day x(8.14 x 10-6 lb-liter/mg/gal)=0.167lb/day Soil Assumptions: • Gasoline-range hydrocarbons in saturated soil are volatilized completely and- decrease linearly over the duration of system operation. The linear decay assumption is made only for the purposes of this calculation. The actual rate will simulate an exponential decay. • Air sparging zone of influence in soil is cylinder with radius of 15 feet and length of 15 feet. • Volume of soil volatilized by air sparging: V(cubic feet)=nr21 =7C x 152 x 15= 10,603 ft3 • Average in-place soil unit weight= 125 lb/ft3 G e o E n g i n e e r s D-1 File No. 0894-002-00/081198 • Estimated worst-case contaminant concentration(gasoline-range hydrocarbons) in saturated soil in air sparging zone of influence(based on average of concentrations detected in soil samples at AS-1 and MW-43. C= 1,000 mg/kg • Duration of operation= 10 years Calculations: Weight of soil within individual air sparging well zone of influence: W(lb) = 10,603 ft3 x 125 lb/ft3= 1,325,359 lb Contaminant volatilized per day from soil: Rs= 1000 mg/kg x 1,325,359 lb x 5 years x 1 yr/365 days x (1 x 10-6 mg/kg)= 18.16 lb/day Total Rate of Volatiles Generation per well: RsUM=RGW +Rs=0.167 lb/day+ 18.16 lb/day= 18.32 lb/day i Total RsuM for 19 wells= 18.32 lb per well per day x 19 wells=348 lb/day RATE OF VOLATILES (TPH) GENERATION IN SOIL AND GROUND WATER - See assumptions listed above for soil and ground water, modified as follows: • Ground Water: Average benzene concentration in ground water in air sparging zone of influence (based on average of concentrations detected in MW-38,MW-18,MW-19,MW-20 and MW-14): C= 0.050 mg/1 Calculations: Ground water flux through air sparging zone of influence Q=0.32 ft/min x 0.0053 x 225 ft2 x 1440 min/day x 7.48 gal/ft3 =4111 gal/day Contaminant volatilized per day from ground water Row=0.05 mg/1 x 572 gal/day x(8.14 x 10-6 lb-liter/mg/gal)= 0.002 lb/day Soil Assumptions: Benzene was not detected in soil samples. RsuM=Row +Rs= 0.002 lb/day per well x 19 wells=0.038 lb/day Total RsIM for 19 wells=0.002 lb per well per day x 19 wells=0.038 lb/day G e o E n g i n e e r s D-2 File No. 0894-002-00/081198 LUp►-a8 --13� elm,) . Geo .1111)�Engineers 'i'' LL� �� ' ` , 8410—154th Avenue NE --- Redmond,Washington 98052 LETTER OF TRANSMITTAL Telephone: (425)861-6000 Fax: (425)861-6050 To: Date: September 29, 1998 City of Renton 1055 Grady Way File: 0894-002-00 Renton,WA • Rega ding: OPLC Maplewood Remediation System We are sending: ® Attached ❑ Under Separate Cover Copies Date Description [Copies] Plan Set,including Detail F(cross-section) Application Fee for Temporary Use Permits Fee for Construction Permit These are transmitted as checked below: El For Your Use El As Requested V El Returned ❑ For Review and Comment El Other(see remarks) Remarks: Copy To: Sandy Conlan,OPLC Signed:, if a ana Carlisle,P.E. i, -.•, .1. - •;'-... : s';1 is-\ -I ..I. . .. 11-' '.''ki',-....y. .:• .;--'N./7 ky ,•••.•- -,•••`-- • -,-: -7.---- ,k3-: ' '.',...'-'1 i - --'• ^ .(''.1.,''.-,1''-\.--.-':.--,.• '.,•,11••;;••:1 t•:''). - '.:':• '.•:. '•'.-21 . , . .•;1 st . 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W.:'.-',..:'(?''I:,W:‘...i1-2..W. .!.., ."•e!.1./..,.; .,.'..fk','R.•-,....,• • - _ ‘..11.. i.:A.,f•..,Ii.•...„(..,1••• ..?1,,...,..; ,..,::_.... —( . 1.-- • - \. • • ` r CONTENTS Page No. DIVISION 1 -GENERAL REQUIREMENTS B-1 SECTION 01000: GENERAL REQUIREMENTS B-1 1.1 DESCRIPTION B-1 1.2 DEFINITIONS B-1 1.3 BIDDER'S REPRESENTATION AND OWNER'S DISCLAIMER B-2 1.4 BIDDING DOCUMENTS B-2 • 1.5 BIDDING PROCEDURE B-3 1.6 CONSIDERATION OF BIDS B-4 SECTION 00700-GENERAL CONDITIONS B-5 1.1 CONTRACTOR'S STATUS AND GENERAL RESPONSIBILITIES B-5 1.2 NOTICES AND COMMUNICATIONS B-5 SECTION 01110-SUMMARY OF WORK B-6 1.1 WORK UNDER THIS AGREEMENT B-6 1.2 CONTRACTOR REQUIREMENTS B-6 1.3 EXISTING UTILITIES B-11 1.4 SCHEDULE OF WORK B-11 1.5 INSPECTION B-12 1.6 TESTING B-12 1.7 SAFETY B-12 i DIVISION 2 SITE WORK B-14 SECTION 02300—SITE PREPARATION B-14 1.1 DESCRIPTION B-14 1.2 EXECUTION B-14 SECTION 02205—PERMITS B-15 1.1 DESCRIPTION B-15 SECTION 02300—PIPE TRENCH EXCAVATION AND BACKFILL B-16 1.1 DESCRIPTION B-16 1.2 MATERIALS B-16 1.3 EXECUTION B-16 1.4 TESTING B-1 g SECTION 02600—UNDERGROUND REMEDIATION PIPING B-19 1.1 DESCRIPTION B-19 • 1.2 MATERIALS B-19 1.3 EXECUTION B-19 1.4 TESTING B-20 SECTION 02522—WELLHEAD CONNECTIONS B-22 1.1 DESCRIPTION B-22 1.2 MATERIALS B-22 1.3 EXECUTION B-22 0 e o E n g i n e e r s i File No. 0894-002-00-1150 • t t i. .. CONTENTS (Continued) Page No. SECTION 02831 — EQUIPMENT ENCLOSURES B-24 1.1 DESCRIPTION B-24 1.2 EXECUTION B-24 DIVISION 15 MECHANICAL B-25 SECTION 15488—PIPING MANIFOLDS AND INSTRUMENTATION B-25 1.1 DESCRIPTION B-25 1.2 MATERIALS B-25 1.3 EXECUTION B-25 TABLES Table No. REMEDIATION WELL INVERT ELEVATIONS 1 G e o E n g i n e e rs ii File No. 0894-002-00-1150 t � 1 ' 1 ATTACHMENT B CONTRACT SPECIFICATIONS DIVISION 1 - GENERAL REQUIREMENTS SECTION 01000: GENERAL REQUIREMENTS ! 1.1 DESCRIPTION This section covers the instruction to bidders for the defined scope of work. Bids shall be submitted on Attachment C, the Bid Form; all requested additional information shall be attached to the Bid Form. 1.2 DEFINITIONS A. Agreement: The written contract between Owner and Contractor that covers the Work to be performed; other Contract Documents are attached to and made a part of the Agreement. I B. Bid: The offer or proposal of the Contractor submitted on the Bid Form setting forth the prices for the Work to be performed. C. Bidding Documents: The invitation to bid (Attachment A), Contract Specifications (Attachment B),Bid Form(Attachment C)and Contract Drawings(Attachment D). D. Contract Documents: The Contract Specifications (Attachment B) and Contract Drawings (Attachment D). E. Contract Drawings (Attachment D): Drawings 1 through 7, titled "Remediation System, Olympic Pipe Linc Company,Maplewood Neighborhood,Renton,Washington." F. Contract Specifications (Attachment B): The written technical descriptions of materials, equipment, construction systems, standards, and workmanship as applied to the Work and applicable administrative details. G. Contractor: The person, firm, or corporation with whom the Owner has entered into the Agreement. IH. Engineer: GeoEngineers, Inc., a Washington corporation, and its employees. The Engineer will be retained by the Owner to perform monitoring during the Work as a basis for assessing the Contractor's compliance with the Contract Documents. I. Laws and Regulations: Any and all applicable laws, regulations, ordinances, codes, and orders of any and all governmental bodies, agencies, authorities, and courts having • jurisdiction. J. Monitoring Wells: Existing or future wells using for monitoring unsaturated zone vapors or ground water. 4� K. Owner: Olympic Pipe Line Company(OPLC), a corporation, and its employees. X L. Remediation Wells: Air sparging or vapor extraction wells (2-inch-diameter)to be connected to the remediation system via remediation piping. GeoEngineers B-1 File No. 0894-002-00-1150 L • M. Remediation Piping: Air sparging or vapor extraction conveyance piping used between remediation wells and the equipment enclosures. N. Remediation System: The integrated assembly of components comprising the air sparging system,the vapor extraction system and vapor treatment unit. O. Work: The entire completed construction required to be furnished under these Contract Documents. Work includes and is the result of performing or furnishing labor, and furnishing and incorporating materials and equipment into the construction, and performing or furnishing services and furnishing documents, as required by the Contract Documents. 1.3 BIDDER'S REPRESENTATION AND OWNER'S DISCLAIMER A. The bidder, by making his Bid, represents that: 1. The bidder has read and understands the Bidding Documents and Bid is made in accordance therewith. 2. The bidder has become familiar with local conditions under which the Work is to be performed and has correlated the bidder's personal observations with the requirements of the Contract Documents. 3. The Bid is based upon the materials, labor, equipment and systems required by the Bidding Documents without exception. 4. The bidder is satisfied regarding the anticipated conditions at the Site,the requirements and accuracy of the Contract Documents,and terms of the Agreement. B. When subsurface reports, evaluations, boring data, or related opinions are provided by the Owner, bidders shall assume responsibility for any conclusions the bidder may draw from such data. Bidders may employ their own consultants to analyze available information, and shall be responsible for any conclusions drawn from that information. The Owner does not represent or warrant the accuracy of such data, reports, evaluations, or opinions, which are made available solely for the convenience of the bidders. 1.4 BIDDING DOCUMENTS A. Copies: 1. Prime Contractors may obtain from the Owner, one (1) set of the Bidding Documents. Bidding Documents will not be issued directly to sub-bidders or others. 2. Complete sets of Bidding Documents shall be used in preparing Bids; neither the Owner nor the Engineer assume any responsibility for errors or misinterpretations resulting from the use of incomplete sets of Bidding Documents. 3. In making copies of the Bidding Documents available on the above terms, the Owner and the Engineer do so only for the purposes of obtaining Bids on the Work and for detailing the scope of Work and do not confer a license or grant permission for any other use of the Bidding Documents. G e o E n g i n e e r s B-2 File No. 0894-002-00-1150 B. Product Substitutions: 1. Submittals for product substitution must be approved by Owner or Engineer before Bid acceptance. 2. The Bidder may propose alternates to materials and equipment specified in the Contract Documents. Alternates must be submitted on a separate sheet from the Bid Form and will be evaluated with the bids. C. Addenda: 1. Written addenda will be mailed, faxed, or delivered to all Contractors who received a complete set of Bidding Documents. 2. Copies of addenda will be made available for inspection wherever Bidding Documents are on file for that purpose. 3. Addenda will be issued in response to any written questions of clarification or information requested by Bidders. Bidders are requested to submit questions of clarification or information to GeoEngineers by fax or mail before September 18, 1998. 1.5 BIDDING PROCEDURE A. Submission of Bids 1. The Bid Form and requested information to accompany the bid shall be submitted to the following two people no later than September 21 at 5 pm: Dana Carlisle,P.E. Sandy Conlan GeoEngineers Olympic Pipe Line Company 8410 154th Ave N.E. P.O. Box 1800, 2319 Line Ave SW Redmond, Washington 98052 Renton,Washington 98057 (425) 861-6040 (425)227-5209 Fax: (425) 861-6050 (425)271-5320 2. Faxed bids will be accepted. However,the Bidder shall also mail or hand deliver the Bid Form and attachments to Olympic Pipe Line Company. Contractor selection and notification is expected to take place on or before September 25, 1998. 3. The Bid sent by mail or hand delivered, and any other documents required to be submitted with the Bid, shall be enclosed in a sealed envelope. The envelope shall be addressed to the two parties receiving the Bids and shall be identified with the project name,and the bidder's name and address. 4. The bidder shall assume full responsibility for timely delivery at the location designated for receipt of bids. B. Modification or Withdrawal of Bid A Bid may not be modified, withdrawn, or canceled by the bidder and each bidder so agrees by submitting a Bid. GeoEngineers B-3 File No. 0894-002-00-1150 1.6 CONSIDERATION OF BIDS A. Rejection of Bids: 1. The Owner shall have the right to reject any or all Bids and to reject any Bid determined to be not responsive. 2. The Owner shall have the right to reject any or all Bids when, in the Owner's judgment, it is in the Owner's best interest to do so. END OF SECTION 01000 G e o E n g i n e e r s B-4 File No. 0894-002-00-1150 ;SECTION 00700 - GENERAL CONDITIONS 1.1 CONTRACTOR'S STATUS AND GENERAL RESPONSIBILITIES A. Contractor is an independent Contractor for all purposes and is entitled to no compensation from the Owner other than that provided by this Agreement. Contractor shall inform the Owner of Contractor's federal Internal Revenue Service employer identification number. B. Contractor shall provide and pay for all labor,materials, equipment,utilities, and other goods or services necessary for full Agreement performance unless this Agreement specifically provides otherwise. Contractor shall supervise and direct Agreement performance using its best skill, and shall be responsible for selecting the means, and in some cases materials and methods, of Agreement performance. If, during or after the term of this Agreement, Contractor learns of any actual or potential defect in the goods or services provided under this Agreement, of any problem associated with the results of Agreement performance, or of any non-conformance with a provision of this Agreement or of federal, state, or local law, Contractor shall inform the Owner immediately in writing with a full description of the defect, problem, or non- conformance. C. The Contractor agrees to a one year warranty on materials and workmanship supplied by the Contractor. D. The contractor selected will contract directly with Olympic Pipe Line Company (OPLC) ("Owner") for this project. The contractor must comply with all contractual requirements including registration, licensing, insurance and bonding. Work performed under this Contract shall be conducted in accordance with the terms and conditions of Bidders blanket agreements or contracts with Owner,if such agreements have previously been established. E. This project constitutes an environmental remedial action as specified under Substitute House Bill (SHB) 2051, Chapter 308, Laws of 1998. A copy of the sales tax exemption eligibility certificate will be provided to the Contractor. F. The Contractor shall become familiar with all details of the Work, verify all dimensions in the field,and shall advise the Engineer of any discrepancy before performing the Work. 1.2 NOTICES AND.COMMUNICATIONS All notices and other communications concerning this Agreement shall be directed to Olympic Pipe Line Company. Notices and other communications may be delivered personally, or by regular, certified, or registered mail. END OF SECTION 00700 G e o E n g i n e e r s B-5 File No. 0894-002-00-1150 • SECTION 01110 -SUMMARY OF WORK 11.1 WORK UNDER THIS AGREEMENT A. This Work is being conducted by OPLC to remediate petroleum-impacted soil and ground water beneath a portion of the Maplewood residential neighborhood. The project shall be referenced as the Remediation System, OPLC Maplewood Neighborhood,Renton, Washington, 1 98058 ("Site"). The Site includes the block valve property (3524 Southeast 5th Street) and Maplewood Park(3400 Southeast 6th Street), both owned by the City of Renton. Additionally, remediation piping and/or remediation wells will be located beneath a portion of Southeast 5th Street and beneath the north sidewalk of Newport Avenue Southeast between 6th Avenue Southeast and Southeast 6th Street. These areas are also City of Renton rights-of-way. Two at- grade remediation equipment enclosures will be constructed: (1)the north enclosure next to the block valve site and(2)the south enclosure near the southwest corner of Maplewood Park. B. The Work includes the furnishing of all labor, materials, tools, equipment, services and incidentals to install remediation piping and aboveground remediation equipment and connect the piping to the appropriate remediation wells and aboveground remediation equipment. Remediation equipment will be provided by the Owner(list contained as Attachment E). IC: OPLC has assigned GeoEngineers, Inc. as the Engineer, whose responsibilities include intermittent monitoring of the Contractor's Work during installation. GeoEngineers will provide a senior technician to intermittently observe the Contractor's Work. D. Contractor's Work activities shall be tailored to minimize disruption to existing uses of the neighborhood and park. Particular attention should be used to protect the general public and to avoid disruption to normal park activities. Contractor shall use their best professional judgment,in consideration of the residential and park uses at the Site,to meet this specification. For example, it is expected that Contractor will conduct on-site work within normal business hours and that construction activities will not impede access to residential properties or to areas of the park outside of the construction zone. 1.2 CONTRACTOR REQUIREMENTS The Work includes,but is not limited to,the following. Bidder should refer to corresponding sections of the Contract Documents for additional requirements. The listing below is not presented in chronological order with respect to the Work schedule. A. Site Preparation 1. The Contractor's site superintendent and representatives of the Owner and GeoEngineers shall participate in a preconstruction meeting at the Site. The purpose of this meeting is to discuss construction staging issues,construction schedule, and site safety. 2. The Contractor shall prepare and follow a Site Safety Plan for their workers during on Site construction activities. A copy of this plan shall be provided to OPLC before the start of Work. GeoEngineers B-6 File No. 0894-002-00-1150 3. The Contractor shall mobilize all equipment and materials necessary to complete the job. 4. The Contractor shall establish a construction staging area at a location approved by the Owner or Engineer. 5. The Contractor shall remove existing sod and pavement in the proposed work areas (Drawing 3A). 6. Payment for Item A shall be lump sum for all items except clearing, which shall be based on lineal feet of trench in unpaved areas and lineal feet of trench in paved areas. B. Permits 1. The following permit applications have been submitted by GeoEngineers: City of Renton Environmental Review (SEPA), City of Renton Building Permit for construction of two treatment equipment enclosures, City of Renton Utilities Permit for construction within City rights-of-way, and PSAPCA(Puget Sound Air Pollution Control Agency)Notice of Construction for emissions from the vapor treatment unit. 2. The Contractor shall obtain all other necessary permits for remediation system piping and equipment installation, including electrical permits. 3. Before beginning the Work, the Contractor shall provide to OPLC and the Engineer a copy of all permits obtained by Contractor for this project. 4. Payment for Item B shall be lump sum., C. Trenching,Conveyance Piping Placement and Backfill 1. Approximately 1,095 lineal feet of piping trench will be excavated for this project (Drawing 3A). Trenching includes excavating by hand or machine a trench of the necessary dimensions to carry the specified piping. The base of the piping trench shall be the minimum depth to achieve the specified minimum pipe burial and invert elevations and to uncover VRS-1 piping as described below. Trenching is not expected to encounter petroleum-contaminated soil. 2. The Contractor shall take special precautions, as outlined further in these Contract Documents,to protect remediation piping trenches and existing underground utilities and piping. 3. The Contractor will be responsible for notifying GeoEngineers if underground utilities or structures prohibit locating the piping trenches as shown in Drawing 3A. GeoEngineers will assist the contractor in establishing alternate trenching locations. 4. Expose and check the integrity of existing 6-inch and 10-inch PVC conveyance piping (not perforated) associated with vapor recovery trench VRS-1 (Drawing 3B). Connect the three segments of 6-inch conveyance piping by manifold to the 10-inch conveyance piping. The Contractor shall not excavate to expose the 6-inch-diameter perforated piping for VRS-1. 5. Place underground remediation system piping (compressed air conveyance piping and vapor extraction piping) between the remediation wells and the equipment enclosures ,GeoEngineers B-7 File No. 0894-002-00-1150 (Drawing 3B). Place underground vapor extraction exhaust piping and control wiring from the south equipment enclosure to the north equipment enclosure. The piping will daylight inside the equipment-enclosures for manifolding and connection to remediation equipment. 6. The remediation piping beneath Southeast 5th Street shall be carried within a single load- spreading sleeve of PVC or other suitable material. The purpose of the sleeve is protect the underground remediation piping. 7. The Contractor shall place and compact backfill over the remediation piping to match the existing subgrades using noncontaminated on-site soil or import soil (Drawing 6B). Backfill for trenches located beneath paved areas shall meet City of Renton requirements. Backfilling will occur after pressure testing the piping and connecting the piping to the wellheads. 8. It is the Contractor's responsibility to restore the ground surface at the completion of trenching, pipe construction and backfilling. Restoration shall match the existing ground surfaces (grass, concrete sidewalk, paved road, as appropriate). If suitable, sod removed for trenching can be reused for restoration. Restoration shall meet City of Renton requirements. 9. Excess soil generated from trench excavation shall be transported by the'Contractor to OPLC's office in Renton. The soil shall be stockpiled at the OPLC facility, or as otherwise directed by OPLC. 10. Payment for Item C shall be per lineal feet of trench in unpaved areas and lineal feet of trench in paved areas. D. Wellhead Connection 1. Connect each air sparging and vapor extraction wellhead to the corresponding compressed air conveyance or vacuum pressure piping (Drawing 6B). The Contractor shall use tee-connections and an expandable cap for well access. Unglued slip-fittings shall not be used. 2. A check valve shall be installed at the air delivery T-connection at each air sparging wellhead to prevent backflow of air or water toward the sparging manifold. 3. The Contractor shall reuse or replace protective flush-grade monuments at each remediation well location. Threaded caps well caps shall be placed on all air sparging wells. 4. The Contractor shall secure the remediation well monuments with a concrete surface seal in accordance with applicable state regulations for resource protection wells (WAC 173- 160). 5. Payment for Item D shall be based on the number of individual wellhead connections. G e o E n g i n e e r s B-8 File No. 0894-002-00-1150 k E. Equipment Enclosures 1. Construct the north equipment enclosure and the south equipment enclosure. Equipment enclosure dimensions are shown in Drawing 3A. 2. The contractor shall take care to protect daylighted remediation system piping during construction of the surrounding equipment enclosures. 3. The contractor shall prepare the equipment enclosure floor slab subgrade and notify GeoEngineers before placing concrete. , 4. Each enclosure shall consist of a 4-inch-thick fibermesh concrete floor slab surrounded by an 8-foot-high chain-link enclosure with locking doors (Drawings 6A and 7). The sides of each enclosure shall be constructed with plastic sight-obscuring slats. 5. Locking double-gates will be installed on the south end of the south enclosure and the south or east sides of the north enclosure. 6. Payment for Item E shall be lump sum for each enclosure. F. Pipe Manifolds,Instrumentation and Plumbing 1. Construct air sparging and vapor extraction piping manifolds within each equipment enclosure(Drawing 6A). 2. Connect the VRS-1 piping to the vapor extraction manifold at the north equipment enclosure(Drawing 6A). 3. Construct the vapor treatment manifold at the north enclosure connecting the south and north vapor extraction systems' exhaust to the vapor treatment unit. 4. Supply and install instrumentation at the air sparging, vapor extraction and vapor treatment manifolds to provide for(1)monitoring and optimization of system airflow, air temperature and/or air pressure, and (2) regulation of airflow and air pressure to individual remediation wells. Schematics of the instrumentation and plumbing requirements are shown in Drawings 5, 6A, 6B and 7. 5. Payment for Item F shall be lump sum for each enclosure. G. Electrical,Natural Gas and Telephone Service Installation 1. Three phase 240V power supply is available at the north equipment enclosure location at the block valve. Three phase power will be available for the south enclosure location. PSE will be providing either 120/208V or 277/480V service for the south enclosure using primary distribution lines along the south side of Southeast 6th Street. 2. Per the conditions of an electrical permit to be obtained by the Contractor,the Contractor shall coordinate installation of the electrical power drop for the north and south equipment enclosures. Additionally, the contractor shall coordinate with Olympic Pipe Line Company with respect to available power adjacent to the block valve enclosure. The contractor shall be responsible for determining and providing any additional electrical features required by PSE. GeoEngineers B-9 File No. 0894-002-00-1150 3. The Contractor shall allow for inspection of electrical service in accordance with local requirements. The Contractor shall provide documentation of electrical inspection to OPLC. 4. The electrical service shall be in accordance with all applicable codes. 5. The contractor shall coordinate installation of telephone service necessary for operation of the autodialer to be located inside the north equipment enclosure. A service account for billing shall be established under the name of "Olympic Pipe Line Company, P.O. Box 1800, 2319 Lind Avenue Southwest, Renton, Washington 98057, attention Sandy Conlan." 6. The telephone service shall be in accordance with all applicable codes. 7. The contractor shall coordinate installation of natural gas service necessary for operation of the vapor treatment unit to be located inside the north equipment enclosure. A service account for billing shall be established under the name of"Olympic Pipe Line Company, P.O. Box 1800, 2319 Lind Avenue Southwest, Renton, Washington 98057, attention Sandy Conlan." 8. The natural gas service shall be in accordance with all applicable codes. 9. Payment for Item G shall be for each service provided(electrical,telephone, natural gas). H. Equipment Installation and Connection 1. The Contractor shall install remediation equipment provided by OPLC (Drawing 7). The list of remediation equipment is provided in Attachment E. 2. Connect power and natural gas service to appropriate equipment. 3. Connect air sparging pipe header at each manifold to the corresponding air sparging compressor. 4. Connect vapor extraction pipe header at each manifold (via condensate drum) to the corresponding vapor extraction blower. 5. Connect and install control panel. 6. Connect electrical supply from power drop to control panel at each equipment enclosure. 7. Connect telephone service at north equipment enclosure to north control panel. 8. Payment for Item H shall be lump sum for each enclosure. I. Leak Testing,System Testing And System Startup 1. The Contractor shall test all below-grade piping for leaks before and after backfilling piping trenches. 2. The Contractor shall test all system components to verify proper operation of equipment. The Contractor shall also test the autodialer system during initial system testing. During initial testing of the system the contractor shall simulate failure of each system component. The contractor shall verify that the system shuts off and the auto dialer notification message is sent. The remediation equipment supplier will be on-site during system testing to provide equipment support and coordination. G e o E n g i n e e rs B-1O File No. 0894-002-00-1150 3. The contractor shall notifyGeoEngineers when the system is completed and fullytested. g Y P A representative of GeoEngineers will be present for initial system startup. The contractor shall aid the representative of GeoEngineers with system adjustments and configuration to ensure the system will provide sustained operation for optimum system performance. 4. Payment for Item J shall be lump sum. J. Installation Documentation As-Builts , 1. The Contractor shall provide GeoEngineers with "AS-BUILT" drawings (accurately marked up copies of original drawings) within 30 days of the Contractor completing all on-site work. 2. Payment for this item shall be lump sum. 1.3 EXISTING UTILITIES A. The Contractor shall conduct a utility locate in accordance with RCW 19.122 to identify the locations of underground utilities prior to beginning Work at the Site. Not all underground utilities are indicated in Drawing 3A. The contractor shall take the necessary precautions to prevent damage to underground utilities and avoid disruption of utility service at the Site. The contractor is responsible for any utility repairs due to,damage caused by the contractor. B. Trenching will necessitate one crossing of OPLC's two side-by-side active fuel pipelines. The Contractor must notify Sandy Conlan of OPLC ([425]-227-5209) at least 48 hours in advance of any excavation over the fuel pipelines. C. The irrigation system at Maplewood Park shall be pot-holed by the Contractor to assess the location and depth of piping. Accommodations shall be made to avoid this piping and associated sprinkler boxes during trenching and placement of the remediation piping. If necessary, the Contractor shall remove and replace the irrigation piping. Protection or removal/replacement of the Maplewood Park irrigation piping shall be the contractor's responsibility. The Contractor is responsible for coordinating this Work with the City of Renton Parks Department. D. The Contractor shall pot-hole and/or expose the documented or marked utilities that will be crossed by the remediation piping, including water service and natural gas service to 3330 Southeast 6th Street, and water, gas and sewer mains at Southeast 5th Street. Remediation piping shall cross over existing utilities wherever possible. 1.4 SCHEDULE OF WORK The Contractor shall proceed with performance under the Agreement promptly upon receipt of the notice to proceed executed by the Owner. The Contractor shall continuously and diligently conduct the Work to complete on or before the time set forth in this section. Field activities are tentatively planned to begin on October 1, 1998 (pending applicable permits) and earthwork activities shall be completed on or before October 31, 1998. Due to equipment order lag-time, GeoEngineers B-11 File No. 0894-002-00-1150 equipment installation and startup may occur in November. The Contractor shall conduct all Site Work between 7:30 am and 5:00 pm Monday through Friday unless specifically agreed to'by OPLC. 1.5 INSPECTION • The Contractor shall be responsible for requesting and obtaining any and all inspections by jurisdictional authorities as required. 1.6 TESTING A. The Engineer,at their discretion,may direct where and when tests are to be performed and may also call for additional tests if, in the Engineer's opinion,conditions warrant additional testing. B. The Contractor is responsible at all times for quality control of the Work and for ensuring that all applicable provisions of the Contract Documents are met. C. The Engineer may perform tests at any time to check compliance with the Contract Documents. D. The Contractor shall be responsible for all tests by suppliers to ensure quality control of materials delivered to the project. 1.7 SAFETY A. The Contractor shall be responsible for work site safety. The Contractor shall provide adequate safeguards, safety devices,protective equipment and fencing and take any other needed actions, or as the Engineer may determine reasonably necessary, to protect the life, health and safety of the public and to protect property in connection with the performance of the Work covered by this Agreement. B. All Work will comply with the safety requirements of government agencies, including specific OSHA(Occupational Safety and Health Administration) and L&I (Washington State Department of Labor and Industries) requirements for operations at construction and hazardous waste sites. C. Contractor understands that Work consists of soil excavation that has a possibility of encountering hydrocarbon-impacted soils, and shall be, required to have workers trained in accordance with OSHA 29 CFR 1910.120 (2) and other applicable federal, state, and local guidelines. Before beginning site Work, the contractor shall submit to OPLC documentation that Contractor's on-site workers meet the OSHA training requirements. D. Pipe trench excavation activities shall be completed in accordance with all applicable local, state and federal requirements for excavation safety. Trenching shall be completed in a manner that will minimize disruption to residential and recreational uses at the Site. Trench spoils shall be temporarily placed in locations that will not disrupt use of existing Site facilities. E. All construction areas that might constitute a driving, pedestrian, or environmental hazard are to be safely secured when left unattended. G e o E n g i n e e r s B-12 File No. 0894-002-00-1150 F. All materials and supplies used shall be chemically compatible with petroleum hydrocarbon vapors. G. All areas of construction are to be left in a neat and orderly condition upon completion of the Contractor's Work and at the end of each work day. END OF SECTION 01110 G e o E n g i n e e r s B-13 File No. 0894-002-00-1150 DIVISION 2 SITE WORK SECTION 02300 — SITE PREPARATION 1.1 DESCRIPTION This section covers site preparation.clearing activities. Bidder is referred to the previously listed Summary of Work for incidental Site Preparation tasks to be performed. 1.2 EXECUTION A. The Contractor shall notify GeoEngineers at least 48 hours in advance of beginning clearing. B. Clearing shall include the removal of surface material of whatever nature in areas of proposed trenching and equipment enclosures. The limits of clearing are defined by the pipe trench and equipment enclosure dimensions (Drawing 3A). Excavation may be performed beyond the limit lines shown to suit construction methods, subject to approval by the Engineer. Contractor will saw cut asphalt concrete andportland cement concrete wherepresent along p trench alignment to the minimum dimensions necessary for trenching. In the case of trenching below the concrete sidewalk,the minimum number of sidewalk panels shall be removed in their entirety. D. All asphalt concrete and portland cement concrete pavement removed shall be separated from other materials and disposed of by the Contractor. All removed pavement shall be disposed of in an appropriate manner and documented accordingly. E. The Contractor shall remove and store sod in a manner to allow reuse of the sod during Site restoration. However, if the Contractor cannot accomplish this, the Contractor is responsible for restoration of appropriate areas with new sod. F. The Contractor is responsible for damage caused by the Contractor and shall repair or replace any damage at no additional expense to the Owner. G. The contractor will follow all applicable local, state and federal regulations and guidance for temporary erosion and sediment control measures, during excavation and backfilling activities. Storm drain collection features shall be.protected from sediment originating at the Site during construction. END OF SECTION 02200 [GeoEngineers B-14 File No. 0894-002-00-1150 SECTION 02205 — PERMITS 1.1 DESCRIPTION This section describes the Contractors requirements for acquisition of permits. A. OPLC will provide to the Contractor copies of permits or permit applications submitted by the Engineer. The contractor shall determine whether additional permits are necessary. B. The Contractor shall obtain all other necessary permits for remediation system piping and equipment installation, including electrical permits. C. Permits shall be obtained before beginning the corresponding Work. END OF SECTION 02205 G e o E n g i n e e r s B-15 File No. 0894-002-00-1150 I � O , l I SECTION 02300 — PIPE TRENCH EXCAVATION AND BACKFILL 1.1 DESCRIPTION This section covers excavation and backfill for underground remediation piping and g'' P P g remediation equipment service utilities as shown in the Contract Drawings and as specified herein. 1.2 MATERIALS A. Backfill and surface restoration requirements for rights-of-way shall be in strict accordance with City of Renton requirements. B. Native on-site soil may be suitable for reuse as structural fill provided it is free of organics or other deleterious materials,the maximum particle size of gravels or cobbles is approximately 4 inches, and the moisture content is within 2%of optimum based upon Modified ASTM D-1557 test procedure. The Engineer will evaluate suitability of on-site soils for use as backfill. C. Excavated materials that are impacted with hydrocarbons (as determined by the Engineer) or other contaminants shall not be used for backfill or other fill material. D. Before delivery of any material to be used in the Work,the Contractor shall advise the Engineer of the material source, shall furnish samples for testing if requested by the Engineer, and shall receive the Engineer's approval before using the materials from that source. The approval of any source of supply by the Engineer will not imply that all material from that source will be accepted. Should material from an approved source fail to maintain a quality meeting the requirements of the Contract Documents,that material will be rejected. 1.3 EXECUTION A. Excavation shall-be conducted by machine or by hand as appropriate to prevent damage to existing utilities. B. The method of excavation shall not weaken surrounding areas or damage existing structures. Existing utilities within or adjacent to open trenches shall be protected and supported as necessary to prevent settlement. Care should be taken to ensure that no damage occurs to existing utilities during trenching, pipe placement and backfilling. Any damage caused by the Contractor will be repaired by the Contractor at Contractor's sole expense. C. Trenching includes excavating by hand or machine a trench of the necessary dimensions to carry the specified piping. The base of the piping trench shall be the minimum dimension to achieve the specified minimum pipe'burial and invert elevations and to expose the VRS-1 piping. D. The Contractor shall remove and replace one section of chain-link fencing along the north end of Maplewood Park to enable trenching across the north end of the Park. E. Excavation in areas of the existing 6-inch- and 10-inch-diameter PVC vapor recovery piping associated with VRS-1 (Drawing 3B) shall expose the piping to allow visual observation by the Engineer. The Contractor shall connect the piping to the north vapor extraction system. The G e o E n g i n e e r s B-16 File No. 0894-002-00-1150 L Contractor shall reconnect the three 6-inch-diameter conveyance lines to the 10-inch-diameter conveyance line at the location of the removed manifold(Drawing 3A). F. Shoring, sheeting and bulkheading required to prevent caving,to restrict widths of slopes or to prevent disturbance detrimental to adjacent areas or to other parts of the contract Work shall be furnished,placed and later removed by the Contractor. G. Materials satisfactory for reuse as trench backfill shall be temporarily stockpiled and protected ' from the elements. The Contractor shall be responsible for maintaining backfill material in a condition suitable for backfilling trenches. Materials determined by the Engineer to be satisfactory for backfill shall be protected from mixing with unsatisfactory or contaminated material. H. Petroleum-contaminated soil is not expected to be encountered during trenching activities. Therefore, noncontaminated soil encountered during trenching may be used as backfill in the trenches. However, if contaminated soil is encountered during excavation, the contractor shall notify GeoEngineers' project manager immediately. Soil that the contractor suspects to be contaminated must be separated and stockpiled temporarily on site. Contaminated soil stockpiles shall be lined with minimum 12 mil plastic sheeting and bermed with straw bales. Stockpiles shall be covered with minimum 6 mil plastic sheeting during nonworking hours. The covers should be secured in such a manner that they will not be blown off by the wind. Disposal of contaminated soil stockpiles is not included in the remedial contractor's scope of work. I. Backfill shall be constructed to return the finish surface to original subgrade elevation, allowing for the surface restoration (sod, pavement, etc.). Grading shall conform to the original surface grade and slope or as otherwise directed by the Engineer. J. Backfill material shall be placed so that when compacted it forms a homogeneous mass free from lenses, pockets, streaks and layers of material differing substantially in texture and graduation from other fill material,unless directed by the Engineer. K. Backfill material shall be placed in even lifts not exceeding 10 inches in total thickness. L. Each lift shall be compacted to 90 percent of maximum dry density for backfill deeper than 2 feet below the finished grade and to 95 percent of maximum dry density for backfill within the upper 2 feet of finished grade. City of Renton specifications shall be followed if different from above requirement. M. Areas not adequately compacted, as directed by the Engineer, shall be compacted again as specified above. N. Care shall be taken to ensure that no damage occurs to piping during placement and backfill of pipes and trench sections. Any damage caused by the Contractor will be repaired by the Contractor at the Contractor's sole expense. O. Any soil left over after backfilling should be transported to a designated stockpile location at OPLC's office in Renton, Washington. GeoEngineers B-17 File No. 0894-002-00-1150 P. Finish grading and surfaces of excavations shall be the same as the existing grade at the Site before work commences under this scope of Work unless otherwise specified in the Contract Documents. .4 TESTING Tests shall be performed by the Engineer to monitor compliance with the Contract Specifications. The Contractor is responsible for compliance with these Contract Specifications. END OF SECTION 02300 Ali it I � G e o E n g i n e e r s B-18 File No. 0894-002-00-1150 SECTION 02600 UNDERGROUND REM EDIAT ION PIPING 1.1 DESCRIPTION This section covers the furnishing and installation of underground pipe and other incidental items as required for the below-grade remediation piping and telephone, electrical and natural gas service indicated on the Contract Drawings and specified herein. 1.2 MATERIALS A. PVC pipe and fittings shall be Schedule 40 or Schedule 80, unless otherwise shown, conforming to ASTM D-1785. B. Sweep elbows-shall be used wherever possible for PVC vapor extraction piping. C. PVC Cement: Conforming to ASTM F-493-80 and meeting PVC pipe manufacturers' recommendations. D. Standard galvanized steel piping shall be standard Schedule 40 galvanized steel, one-inch- inside-diameter,unless otherwise shown,conforming to ASTM A-53 Type E or F. Pipe fittings shall be malleable iron galvanized fittings, Schedule 40,conforming to ASTM A-197. 1.3 EXECUTION A. The Contractor shall conduct trenching and backfilling per the requirements of Section 2300. B. Piping must be cut, installed, cemented, and/or covered with backfill in accordance with the manufacturers' recommendations. All cut ends shall be reamed and deburred before to installation. C. Piping work shall not be covered or enclosed before it has been tested, inspected and approved. Work prematurely enclosed before Engineer's approval shall be reopened and all damaged work shall be restored at the sole expense of the Contractor. D. Installation of all piping must be completed by personnel experienced with the installation of the type of piping called for the Contract Documents. E. Interior of all piping shall be cleaned, dried and free of cutting oil before installation. F. Where electrical rigid nonmetallic conduit is used, threaded rigid metal conduit or threaded steel intermediate metal conduit shall be used for the last three feet of the underground run to emergence or to the point of connection to the above ground raceway. G. Care should be taken to ensure that no damage occurs-to the remediation piping or existing utilities during pipe placement. Any damage caused by the Contractor will be repaired by the Contractor at their sole expense. H. Contractor shall place compressed air conveyance piping (1-inch-diameter galvanized pipe) extending between the equipment enclosure and each air sparging well at a minimum of 18 inches below existing grade except beneath the roadway of Southeast 5th Street where piping shall be a minimum of 2 feet below the existing ground surface. G e o E n g i n e e r s B-19 File No. 0894-002-00-1150 LL' ' I. Piping from each air sparging well will daylight inside the equipment enclosure. The piping from each of the air sparging wells will be manifolded together above grade inside the equipment enclosure. Aboveground air sparging i in will comprisegalvanized pipe. g piping g P P�P Piping manifolds are discussed in Section 15488. J. Vacuum pressure conveyance piping extending between the equipment enclosure and each vapor extraction well will be installed a minimum of 18 inches below existing grade (except beneath the roadway of Southeast 5th Street where piping shall be a minimum of 2 feet below the existing ground surface) and will consist of 3-inch-diameter Schedule 40 PVC. Vacuum conveyance piping shall be sloped continuously down from the equipment enclosure to each vapor extraction wellhead (minimum lk percent slope). Vapor extraction piping will daylight inside the equipment enclosure. The piping from each of the vapor extraction wells will be manifolded together above grade inside the equipment enclosure (Drawing 6A). Additionally, the 10-inch-diameter PVC collection pipe from VRS-1 will be manifolded with the piping from the vapor extraction wells within the northern enclosure. Piping manifolds are discussed in Section 15488. 'K. The 4-inch-diameter vapor extraction exhaust piping from the south enclosure will be constructed at least 18 inches below existing grade and will daylight inside the north enclosure for a manifolded connection to the vapor treatment unit. L. The Contractor shall label each segment of daylighted remediation piping from remediation wells, VRS-1 or the south vapor extraction exhaust. The markings shall clearly indicate the use of any piping carried underground from the equipment enclosures. M. All remediation system underground piping beneath the roadway of Southeast 5th Street shall be contained within a load-spreading sleeve of PVC or equivalent to protect the piping from traffic loads. N. Control wiring extending between the southern and northern enclosures will be placed as specified by local codes. O. Plastic marking tape shall be used in piping trenches between the equipment enclosure and remediation wells. The tape shall be of a type specifically manufactured for marking and locating underground utilities. The plastic marking tape shall be manufactured with integral wires, foil backing or other means to enable detection by a metal detector when the tape is buried up to 3 feet deep. The metallic core of the tape shall be encased in a protective jacket or provided with other,means to protect it from corrosion. The Contractor shall place the marking tape directly above the pipe(s). 1.4 TESTING A. Piping shall be pressure tested to ensure proper installation and tightness. Testing of 1-inch- diameter steel pipe shall conform to applicable codes. All testing is the responsibility of the Contractor and any piping failing the tightness test shall be repaired or replaced by Contractor G e o E n g i n e e r s B-20 File No. 0894-002-00-1150 at no additional expense to the Owner. The Contractor shall notify the Engineer before the start of any tightness testing. Testing procedures, accuracy, and results shall be reviewed by the Engineer for approval. B. The contractor shall test all below-grade piping for leaks in the following manner: • Before connecting the piping to the wellhead and the manifold, securely seal each end of the pipe using a plug or packer. • Attach a pressure gauge and compressed air source to the pipe. • Apply a positive pressure of at least 25 psi. • Turn off the compressed air source and monitor the pressure gauge to confirm that the line maintains that a pressure for a minimum of 1 hour. C. After connecting the compressed air lines to the manifold, the contractor will test the full system by securely sealing each compressed air line at the wellhead, sealing the system, applying a pressure of at least 25 psi as described above, and confirming that the,system maintains that pressure for a minimum of 1 hour. END OF SECTION 02600 G e o E n g i n e e r s B-21 File No. 0894-002-00-1150 , SECTION 02522 —WELLHEAD CONNECTIONS 1.1 DESCRIPTION This section covers modification of the remediation wellheads to connect air sparging or vapor extraction piping. One air sparging well exists at this time (AS-1). The remaining air sparging and vapor extraction wells will be installed by a drilling contractor (retained by the Engineer)before the Contractor begins trench excavation for this project. 1.2 MATERIALS The Contractor will set or reset all remediation well monuments, supply and place the bentonite seal, and supply, set, and cure the concrete surrounding the well monuments. The Contractor shall provide 2-inch diameter Schedule 40 PVC risers and well caps for the wells. The Engineer will supply the well monuments. 1.3 EXECUTION A. The Contractor `shall remove each remediation (air sparging or vapor extraction) well monument where present, remove the bentonite as necessary to access the proposed invert location and cut the top 18 to 36 inches feet of the PVC well for the T-connection at the invert location(Table 1). Excavation of soil within one foot of the well casing shall be performed by hand. This is to prevent damage to the well casing. Wells damaged by the Contractor during construction under this Work scope shall be replaced by the Owner at the Contractor's expense. B. When excavating or working in the vicinity of remediation wells, the Contractor shall take all necessary precautions to prevent material from entering the well. The wells will be initially fitted with a locking well cap. The Contractor shall use these well caps or other suitable caps to protect material from entering the well. C. Upon cutting the well casing, the well cap shall be immediately replaced and locked or connected to the appropriate pipe connection. 'D. The contractor must make provisions during construction to ensure that wells cannot be accessed by unauthorized persons. E. After fitting the T-connection on the well, the Contractor shall place a 2-inch diameter Schedule 40 PVC riser on the well to approximately the original elevation. The Contractor shall replace the well cap(Drawing 6B). F. The Contractor shall reset the well monuments and concrete surface seal at slightly below the surrounding surface elevation for remediation wells in the grassed areas of Maplewood Park to allow and placement of sod over the remediation well monuments. Acquisition and placement of sod shall be the responsibility of the Contractor. G. To prevent surface water from ponding on top of the well monuments not located in grassed areas, the Contractor shall place the well monuments and finish the concrete surface seal at slightly above the surrounding surface elevation. G e o E n g i n e e r s B-22 File No. 0894-002-00-1150 t f H. The Contractor will connect each air sparging and vapor extraction wellhead to the corresponding compressed air conveyance or vacuum pressure piping. The Contractor shall use tee-connections and an expandable cap for well access (Drawing 6B). Unglued slip- fittings shall not be used. I. A 2-inch-diameter check valve shall be installed at the air delivery T-connection at each air sparging wellhead to prevent backflow of air or water toward the manifold(Drawing 6B). END OF SECTION 02522 G e o E n g i n e c r s B-23 FileNo. 0894-002-00-1150 c ' SECTION 02831 — EQUIPMENT ENCLOSURES 1.1 DESCRIPTION This section covers specifications for construction of the north and south equipment enclosures. 1.2 EXECUTION A. The Contractor shall construct the equipment enclosures at the approximate location shown in Drawing 3A. B. No modifications shall be made by the Contractor to the equipment enclosure dimensions or orientation without prior approval from the Engineer. C. The Contractor shall prepare the subgrade before placing the 4-inch-thick fibermesh concrete floor slab. Preparation shall include removal of existing sod and organic material and leveling and compacting the subgrade. Other measures may be necessary as'directed by the Engineer. D. The finish elevation of the floor slab shall be no more than 4 inches above the surrounding exterior grade. E. Concrete placement, finishing and curing shall be in accordance with applicable codes and standards for similar construction. F. The enclosure shall be surrounded with an 8-foot-high chain-link fence (Drawing 6A). The Contractor shall place sight-obscuring plastic slats within the chain-like fabric. The Contractor shall provide the Engineer with a product submittal of the plastic slats before installation. G. Installation of the equipment enclosures shall meet applicable requirements of the City of Renton building permit (to be obtained by OPLC and provided to the Contractor before construction). H. Chain-link fence construction shall be in accordance with industry standards for similar construction. I. Double gates shall be used on the south end of the south enclosure and the south or east end of the north enclosure. The gates shall allow for access and placement of remediation equipment inside the enclosure. Two 10-foot wide gates shall be used for the north enclosure and two 5-foot wide gates shall be used for the south enclosure. J. The Contractor shall place sturdy combination locks on the gates to prevent access by unauthorized persons. K. The Contactor shall orient equipment and piping within the enclosures in a manner that allows easy access around the enclosure for monitoring and manipulation of valves for system optimization. END OF SECTION 02831 G'e o E n g i n e e r s B-24 File No. 0894-002-00-1150 DIVISION 15 MECHANICAL , SECTION 15488 — PIPING MANIFOLDS AND INSTRUMENTATION 1.1 DESCRIPTION This section covers piping manifolds and instrumentation in the north and south equipment enclosures for the air sparging and vapor extraction systems and the vapor treatment unit inlet manifold. 1.2 MATERIALS The Contractor shall fabricate the piping manifolds. PVC pipe shall be used for the vapor extraction and vapor treatment unit manifolds. Galvanized steel shall be used for the air sparging aboveground piping. 1.3 . EXECUTION A. Before constructing pipe manifolds the Contractor shall submit to the Engineer an elevation drawing of each proposed piping manifold. The drawing shall specify the conveyance piping from each respective remediation well and the piping diameter and materials. B. The header from the south air sparging manifold will connect to the south air sparging compressor per manufacturer recommendations. The header from the north air sparging manifold will connect to the north air sparging compressor per manufacturer recommendations. C. The header from the south vapor extraction manifold will connect (via condensate drum) to the south vapor extraction blower system. The header from the north vapor extraction manifold will connect(via condensate drum)to the north vapor extraction blower system per manufacturer recommendations. D. Exhaust piping from the north and south vapor extraction systems will be manifolded together in the north equipment enclosure. The header from the vapor extraction exhaust piping manifold will connect to the vapor treatment unit per manufacturer recommendations. E. Instrumentation installed upstream from each air sparging manifold header will consist of the following(Drawings 5, 6a and 7): • A ball/globe valve to regulate system airflow. • A pressure gauge(0 to 25 psi)for measurement of full system air pressure. • A temperature gauge. F. Instrumentation installed on each individual air sparging line, downstream from the air sparging manifold header, will include the items listed below (Drawings 5, 6a and 7). The items are presented in the order in which they will be installed, beginning nearest to the header. • A ball/globe valve to regulate airflow and pressure. • A sight flow meter (0 to 10 scfin) for reading airflow rate in each individual air conveyance line. The Contractor shall propose an appropriate flow meter and provide the G e o E n g i n e e r s B-25 File No. 0894-002-00-1150 • y • a specification with their Bid. All flow meters must be installed at least 4 pipe diameters from the nearest pipe bend or fitting. G. Instrumentation installed upstream of the suction side vapor extraction header will consist of a gate valve for regulating airflow and a vacuum pressure gauge(Drawings 5, 6a and 7). H. A 3-inch-diameter gate valve and fitting for 1/4-inch-diameter tapped sample port will be • installed on each vapor extraction line downstream of the vapor extraction manifold header. The gate valve for the VRS-1 line to the manifold will consist of a 10-inch-diameter valve. I. Instrumentation installed upstream of the vapor treatment unit manifold header shall include a gall/globe valve and fitting for 1/4-inch diameter sample port(Drawings 5, 6a and 7). END OF SECTION 15488 • G e o E n g i n e e r s B-26 File No. 0894-002-00-1150 . -r ' • a Table 1 Vapor Extraction Wells Estimated Invert Elevations for Remediation Piping OPLC Remediation System, Maplewood Neighborhood Estimated Approximate Invert Distance From Invert Elevation at Elevation of Remediation Vapor Extraction Equipment Equipment Piping at Well (min. feet Well Enclosure (feet) Enclosure (feet bgs) bgs) VE-1 60 1.5 1.8 VE-2 25 1.5 1.6 VE-3 80 1.5 1.9 VE-4 110 1.5 2.1 VE-5 140 1.5 2.2 VE-6 235 1.5 2.7 VE-7 170 1.5 2.4 • VE-8 110 1.5 2.1 VE-9 160 1.5 2.3 VE-10 185 1.5 2.4 VE-11 155 1.5 2.3 VE-12 125 1.5 2.1 VE-13 100 1.5 2.0 VE-14 70 1.5 1.9 VE-15 40 1.5 1.7 VE-16 65 1.5 1.8 Notes: • Ground surface elevation is essentially flat for the purposes of estimated elevations. Assumes minimum 0.5 percent downward slope. Pipe installation shall slope continuously down to prevent moisture accumulation in low spots. • p/0894002/VEinvertelevations.xlsSheetl ATTACHMENT D REMEDIATION SYSTEM • OLYMPIC PIPE LINE COMPANY • .' Maplewood Neighborhood i Renton, WA • n SITE SYMBOLS MW-5 • MONITORING WELL —x x x— FENCE LINE INDEX OF DRA.WIN GS 4 SOIL BORING —1- I I RAILROAD TRACKS D0 SVE WELL R/W RIGHT OF WAY • NO. DESCRIPTION 0 AIR SPARGING WELL 64 64 EXISTING GROUND SURFACE ELEVATION s 1 DRAWING INDEX/SYMBOL & LEGEND SHEET 0 PROPOSED SVE WELL CONTOUR (FEET) (CITY OF RENTON DATUM) PROPOSED AS WELL "SITE" BOUNDARY 2- NEIGHBORHOOD DETAIL MAP -- 3 E OVERHEAD ELECTRIC LINE A SITE PLAN © POWER POLE 3B BELOW GRADE REMEDIATION PIPING LAYOUT • POWER POLE WITH TRANSFORMER —E — UNDERGROUND ELECTRIC LINE • • LIGHT POLE - --G- - GAS LINE • • 4 CONSTRUCTION SPECIFICATIONS T OVERHEAD TELEPHONE LINE ss SANITARY SEWER MANHOLE 5 PROCESS FLOW DIAGRAM CATCH BASIN —T— — 'UNDERGROUND TELEPHONE LINE . 6A CONSTRUCTION DETAILS - -w- - WATER LINE • 6B CONSTRUCTION DETAILS TREE/SHRUB — —ss— — SANITARY SEWER LINE 7 SCHEMATIC EQUIPMENT LAYOUT (PLAN VIEW) - FIXED PROTECTION POST -s- - STORM SEWER LINE O REMOVABLE PROTECTION POST PROCESS LINES ABOVE GRADE en�l BENCHMARK PROCESS LINES BELOW GRADE PROPOSED UNDERGROUND VAULT PROPOSED PIPING TRENCHES (ONE LINE TO EACH WELL UNLESS NOTED OTHERWISE) o SPRINKLER HEAD }--'—'---;'.-.u._, -- -EXISTING VAPOR- RECOVERY PIPING _ -_ _ Cl SPRINKLER CONTROL BOX op N OPLC PROJECT: REMEDIATION SYSTEM' TITLE: FACILITY: OLYMPIC PIPE LINE COMPANY DRAWING INDEX o Maplewood Neighborhood SYMBOL & LEGEND SHEET I t�� J �� Renton, WA o Geo�JEngineers 1 DATE: 9/01/98 SHEET 1 OF 9 DRAWING No. 1 1 • f m (N 0 Base of Valley Slope o) co o 35 SE 5TH ST .4 Z o LI CI Ili ❑ iln ❑ oo 0 ❑ oQ�� 11 23• 36• O / e �G1 O 28 O O lock Valve Site es�� Q O O 0 ❑ . O OLi 33 I.* rL0 , ee\\t\ -10E'Q' O .SF 6T O O O O ��,�� 32 '�6¢7. 0 yST * 6�t 1 AVE S O Q 0�zzer , 29 • O F O y‘Q� 34 O 43 - 04::::1 30 Q �F' Oi � �10 ,�S8 •.��:j'M q /, , •41 0 O ❑ 22• 12 1. I qp4F SP-1 T• • O SP-7 : o SP-„� 20 �O ? �/ O I I SP-6 SP �0 TP-5 '9 LISP-10 SP 9 14 SP- TRW-3 1 4F 6 8 \_s* p TP-6•QRW-1 �' ow YS 55- SP-4 • 17•Riverviewiii �� 15• 13 ot4- O Y 6 r Z 37 O ❑ �i Q----DI __ Park 3• � _ SP-8- SP-13 oa O SE ST ' RAILRO f� 4� 4 12: 9 ¢ ORW-2 VRS-2 16 TP-8 �Q\e*a O • W-4�2p 2-Shallow AD i�l n 24 ®21 O C' e 1_ a �� Maplewood fre 39 - Q4 Golf i_ ! I!„ Vw Course \ / � 0 . f pi,I *. *ii , S sF / R• J 6Tti ST G PW-12 . i / 69 i pti,0 ri EXPLANATION: '30 / �- , True )(F *, TP-1 -r - TEST PIT (APRIL 1998) 9k.P CrSP-1 SOIL PROBE (APRIL 1998) F\F`4,2,�% Site North ( **** 1 • MONITORING WELL (OLYMPIC PIPE LINE COMPANY) - - N AS-1 • AIR SPARGING WELLI #4 01 MW-36 37 O ABANDONED MONITORING WELL Base of Valley Slope 10 CI MONITORING WELL NOT LOCATED IN 1998 PW-12 01 CITY OF RENTON WELL MW-36 0 200 400 m RW-1 V ABANDONED RECOVERY WELL _ VRS-1 I I ABANDONED VAPOR RECOVERY SYSTEM SCALE IN FEET ® FORMER PRODUCT SEEP PROJECT: RLMEOIAIION SYSTEM TITLE: . • OPLC IACILIIY: OLYMPIC- I'IPL LINL COMPANY NEIGHBORHOOD • '•� Notes: 1. The locations of all features shown are approximate. Maplewood Neighborhood DETAIL MAP 0 2. TP-7 was situated in the same location as SP-11. /� Renton, WA U o Reference: Drawing entitled "Cedar River Recovery Area Plot Plan" by Olympic Pipe Line Company, 10/16/86. Geo ;Engineers 1 DATE: 9/01/98 SHEET 2 OF 9 DRAWING No. 2 2 4 x" r a • CD X N / \\\ .\\\s„,,..\.1.ID 0 1% NEWPORT AVE SE PLACE PIPING TRENCHES AND WELLS co BENEATH MIDDLE OF SIDEWAu<— O 4P• T \ \ , — '��1 \ SS s CUrb \\ \\�Ss (tyP) 1 4 \!y \LP i /01— (i») Fi 10 16'0 Ductile Iron Water Line /� -1 20 feet North of CenterMe 3425 , ./" `11 Concrete S. / V�I,• ` Wolkxay 524 1 0) \ % \ j /� Ca: 528 sidewalk{typJ 4 �� \ -13 3330 \ \, 1 3333 Concrete I /r Driveway 1 3429 , 3508 A -14 Concrete l A , 8'cha[nlink Lena MANIFOLD Driveway� a a ��eir1 foot diameter tree Cn Sprinkler bin with date 1 T 3 REMOVED ' \ i �t D' VE-8 A.-13 AS-12 I �_ = I.i ` ' — ��j I l r�� I l As-1=t' II•I -10 , Concrete 1A4-1' I VRS-, ` II Equipment�th� Playground /�1 4'chainlink fence 4I I lI 18 1 1 1 "g'' 1 I —N. — Enclosure , II I 1 5 II yE-4 I 0 ° t 2'high a I — 0 1 d AS-11 • — —0 •I �1 1 \ r fttdioameter tree wail \ - �- 1 , 1 A�� 3 diameter tree 1 V Concrete 1 17 I I 1 til Ii ,. VE-3 40 feet tell I o \l) 2 toot diameter tree • 1 N c illy 30 feet tell , 1 - I�•AS-1 Block Valve Endo re c 1 _i! I •i •38 = . 4 2o-Pipeline(OPLC)B'deep o 1 • �+ 2 foot dkuneter tree U o ` 01 — , II'to 1 i 45 feettaH116'Pipeline(OPLC)5.5'deep 1Or _` 1 - — �11t c N. , 1. `` �-Concrete slob Southern System I Added trenching t� Northam Systemconnect south A4-61 '' I I It rxL ` 2 foot diameter tree extraction ehauetptalI >�L 20�g;icy Chainlnk Fenea \ 1r30 feet tall north enclosure forI �� w �' 1cr vapor treatment. \ 0I I 1 i _ __ ` Sldexaik concrete(typ.) 1I -- hydrae, tNI \ Maplewood Park , Asphalt { �O! EqulpmantNEna repimurfa d 1 I True / tf) STORM DRAIN1 /'�� ' APPROX. DEEP — Ill\ — RIW — — — RA `� i \ i \ Reetroom Asphalt path `� + Site North TP-1 - \ SP 1 \i/ , , - - \ \ 30V SCALE 0IN FEET 15 30 Grose(typ.) co `I / \ J EXPLANATION: co SEE LEGEND Sc SYMBOL SHEET N DO o PROJECT: REMEDIATION SYSTEM TITLE: OPLC FACILITY: OLYMPIC PIPE UNE COMPANY SITE PLAN o Notes: 1. The locations of all features shown are approximate. Maplewood Neighborhood 0 2. Underground utilities to be verified by locate. Not all utilities are shown. �V. 6 ^0�� Renton, WA 0 Reference: Drawing entitled "Cedar River Recovery Area Plot Plan" by Olympic Pipe Line Company, 10/16/86. VG 440.Engineers 1 DATE: 9/01/98 SHEET 3 OF 9 DRAWING No. 3A c f J. . Mr 0 1 , 71111111111111, U LEGEND N O -- -- AR BAR p00 PVC CD 00WON EDIVC11C41 y6A•pDA.RCCO ,y 22•0 - (m BEIXF�ID ) it,i)ocs_ 6'OK PVC 1 W our EaFacno„PVC AND CONTROL PORNO • TO NORM EICLOSURE I L° 0 AS-7 /R '/� �•AS- !l • `1f NOTE NOTE: \ - - • AS— . ANES PING TO DAYLIGHT INTO PROKEN FOR GRAPHIC REN OSURE10N,TYP. PROPOSED PIPIN TO PLACED ADJACENT TO STING PI 1, -- -- -T3 1 nc __ BURIED I1 IFCLD ' I VE—5 •.� -- -- 3•AS-112 —� — - I r y4VE_8 AS-1 r ' VE—S ,111 AS-1 , VE-15 Ag.AS-1 ' 18 4:4 AS-11 nr m *AS-2 •17 ��--.iyyi��VE 3 I ! P - _'II-oAs-1 _= r r •38 • AS-5 •y o . l JK W-2 NO1E AS—S y' ALL PIPING TO DAYLIGHT INTO ENCLOSURE LINES BROKEN FOR GRAPHIC REPRESENTATION,TYP. 1)0 True + Site North / - 111111 30 0 15 30 SCALE IN FEET CO a) N 00 0 PROJECT: REMEDIATION SYSTEM TITLE: BELOW GRADE OPLC J FACILITY: OLYMPIC PIPE LINE COMPANY REMEDIATION o Maplewood Neighborhood PIPING LAYOUT 6 - w Q Renton, WA OE11leP.I'S 1 DATE: 9/01/98 SHEET 4 OF 9 DRAWING No. 3B I } , 1 .0 GENERAL REQUIREMENTS 3.0 PROCESS EQUIPMENT INSTALLATION 0 0 1 . Contractor shall locate all underground utilities before construction and 1 . Equipment shalt be placed in accordance with the Equipment Layout (Drawing - take necessary precautions to prevent damage to or disruption of 7) and the Process Flow Diagram (Drawing 5) coexisting underground utilities during construction. Contractor shall be 2. Contractor shall exercise due care to protect equipment from theft or responsible for any repairs necessary due to damage caused by the damage. contractor. 2. Contractor is to comply with all Federal, State and Local safety and environmental laws and ordinances. 4.0 FENCES AND GATES 3. Contractor is responsible for protecting the environment during construction 1 . Contractor shall install suitable 8-foot tall chain link enclosures with sight by protecting trees and shrubs, containing any run-on or run-off, controlling g dust, and containing any contamination caused by the contractor. obstructing slats. Standard enclosures shall be dimensioned as shown on The contractor shall dispose of any construction debris off site. Drawing 3A. 4. Specifications and notes supersede drawings-any conflict is to be brought 2. The entry doors shall be installed with a latch capable of being to the attention of GeoEngineers for resolution. secured with a padlock. 5. It is the contractor's responsibility to verify all dimensions and conditions before 3. GeoEngineers will post a sign noting emergency contact numbers for system starting work. GeoEngineers shall be notified of any discrepancy for resolution. operation. 6. Construction areas are to be clearly marked with cones, barricades, or other approved safety markers, as required by local codes, to restrict access - - to unauthorized persons and provide a safe work area. Open trenches shall be 5.0 PIPING AND VALVES fenced or covered daily. 7. The contractor shall warranty all materials and workmanship for a period of 1 . Installation details are provided in Drawings 6A and 6B Construction Details. one year. Defects shall be corrected at no cost to OPLC. 2. All piping and conduit shall be supported in accordance with local codes 8. Contractor shall provide GeoEngineers with "AS BUILT" drawings to prevent sagging or over-stressing of the pipe and connections. All piping (accurately marked up copies of original drawings) within 30 days of final shall be supported so that no load or stress is transferred to any equipment. system installation. 3. Process piping shall be pressure tested per contract specifications. 9. Contractor shall notify GeoEngineers 48 hours prior to the start of work. 4. Process piping inside the enclosure shall be labeled with corresponding well 10. Contractor, with the aid of GeoEngineers, shall coordinate construction activities numbers. to minimize disruption of existing residential and park uses. 5. Where piping is routed aboveground, inside enclosure, the piping shall be supported by unistrut and shall be per code. 6. Utility piping must be installed per code. 7. Valves shall be labeled for their use and shall be installed as shown in 2.0 SITE WORK detailed drawings. Earthwork for trenching 1. Existing landscape materials, grass or gravel are to be reused when possible and restored to original appearance at trench locations that are within landscaped, grassed or graveled areas. 2. Excavate and stockpile soil encountered during trenching to required subgrade 6.0 ELECTRICAL elevations. 3. Backfill trenches with soil removed from the trenches after pipes have been pressure 1 . Contractor to provide electrical and equipment wiring drawings for permit purposes. tested. Hand tamp around pipes. Compact adequately to support surface material (landscaping, grass, gravel or pavement.) 4. Contractor shall notify GeoEngineers if contaminated soil is encountered during ' --- - NOTE-: -- - trenching activities. GeoEngineers will conduct soil sampling as necessary. 5. Place contaminated soil on plastic sheeting and cover in accordance with best Refer to contractor scope of work for project specific construction specifications. management practices. 6. Refer to contractor scope of work for details regarding protection of existing utilities during trenching. co N co Paving 1 . Existingpavement, where 0 PROJECT: REMEDIATION SYSTEM TITLE: present; is to be saw cut when removed to provide a OPLC CONSTRUCTION square vertical joint for repaving. FACIU1Y: OLYMPIC PIPE LINE COMPANY 0 2. Pavement shall be replaced with asphalt or concrete to match existing pavement / i� Maplewood Neighborhood SPECIFICATIONS thickness and strength. GeO Engineers Renton, WA 3. Pavement and base materials to conform with the City of Renton requirements. \ 1 DATE: g�01�98 SHEEP 5 OF 9 DRAWING No. 4 L r 1 , 7 AIR SPARGING SYSTEM w N 0 0 a) c o PRV • (TYPICAL AT MANIFOLD, Z] X ® O SEE DETAIL FIG.6A) AIR INLET/OUTLET SILENCER - 5 CLEAN OIL-FREE 111 P c AIR TO AIR S SPARGING WELLS • ATMOSPHERIC PARTICULATE AIR FILTER —. ClEffil SI HM ® _ AS/VE DESIGN PARAMETERS MOTOR STARTER TO ELECTRICAL OIL-LESS s SUPPLY AUTO REFER TO TEXT OF CONTRACTOR REQUIREMENTS COMPRESSOR CONTROL PANEL DIALER - NEMA 4) (NOTE 5) (NOTE 4) SCOPE OF WORK. PROGRAMMABLE TO EXTERNAL TIMER PHONE LINE CATOX EXHAUST VAPOR EXTRACTION SYSTEM I 0 NOTES: 1. ENCLOSURE WITH PROGRAMMABLE TIMER CONTROLS CATOX FOR "INDIVIDUAL ZONED" CONTROL OF SOLENOID. VAPOR PF TREATMENT 2. ALL ELECTRICAL EQUIPMENT AND WIRING SHALL MAKE-UP UNIT SUPPLEMENTAL FUEL BE IN UL APPROVED AND IN COMPLIANCE WITH NEC n Z AIR INLET (NOTE 3) (NATURAL GAS) AND LOCAL CODE REQUIREMENTS. FROM VAPOR EXTRACTION WELLS 1' (TYPICAL AT MANIFOLD) Q i 3. THE CATOX WILL BE LOCATED IN THE NORTHERN - (SEE DETAIL FIG.6A) 5 —0 9ENCLOSURE. VAPOR EXTRACTION SYSTEM EXHAUST FROM _rn,...HpH),(1 THE SOUTH SYSTEM WILL BE ROUTED VIA BELOWGRADE PIPING TO THE CATOX IN THE NORTHERN ENCLOSURE. o LAH SP (MANIFOLD NOT SHOWN.) AUTO o HLS VALVE o LLS VAPOR EXTRACTION BLOWER 4. A SINGLE AUTO DIALER WILL BE LOCATED IN THE t i IX' NORTHERN ENCLOSURE. THE AUTODIALER WILL BE LAH CONDENSATE CONNECTED, VIA BELOWGRADE CONTROL WIRING, TO d DRUM MOTOR STARTER THE CONTROL PANEL IN THE SOUTHERN ENCLOSURE. CONDENSATE CONDENSATE CONTROL PANEL " TRANSFER • BATCH (NEMA 4) 5. WITH HEAT EXCHANGER. - - PUMP - - TANK- - - , ,CAPPED 6. SAFETY SHUT OFF REQUIREMENTS FOR CONTROL '-W DRAIN PANEL CONNECTIONS ARE LISTED IN CONTRACTORS VALVE SCOPE OF WORK. LEGEND oo SI = SERVICE INDICATOR GAUGE LOM = LOW OIL MONITOR a) HM = HOUR METER APR = AIR PRESSURE REGULATOR —/0 = ON/OFF LIGHT/ START/ STOP AFR = AIR FLOW REGULATOR CV TG = TEMPERATURE GAUGE AFG = AIR FLOW GAUGE o —© = PRESSURE GAUGE �Q = GATE VALVE(2") PROJECT: REMEDIATION SYSTEM TITLE: —�jJ = VACUUM GAUGE Del = GLOBE VALVE(2") OPLC FACILITY: OLYMPIC PIPE LINE COMPANY PROCESS FLOW 3 PF = PARTICULATE FILTER(25 MICRON) -= 1/4" TAPPED SAMPLE PORT Maplewood Neighborhood DIAGRAM o SRV = SAFETY RELEASE VALVE v PS = PRESSURE SWITCH LAH = LEVEL ALARM HIGH ��A Renton, WA o PRV = PRESSURE RELIEF VALVE —0 HLLS = LOW LEVEL SWITCH Geo�0En eerS DATE: DRAWING No. —0 HLS = HIGH LEVEL SWITCH �4/ a`"' 19/01/98 SHEET 6 OF 9 5 A ` ..- • I N 1" GALVANIZED / 0-25 PSI o PIPE , /� AIR PRESSURE 11 o .4 GAUGE 3 0o 1" GALVANIZED ,• o TEE (TYPICAL) —\ 1" 90' TOP HINGE 5 — = GALVANIZED 180'SWING LINK FABRIC lENS10N WIRE PULL POIST STRETCHER BAR TRUSS RODS ELBOW (TYPICAL) • •�-. 1e t BRACE RAIL ••••••••1•••••••� ;..-.�••••••••••�•� •i •;•�•••••••••••��- •••••••• .I -i�•••••.•• 0 (0 CD t) '° i i � •AAA£AA�% -..4£AA££A. — _ •iiiiii!% --ttb •eiii!:''iA£A4II iiii`: • ii 1- GLOBEil - j I •...„. •:.,..... •......•..,� . ...-.❖.❖.❖.❖.❖,•S. ; I , ,\ VALVE (TYPICAL) v-�.w.NN. //�/f' . c N/�/1/ lir ., ABRIC BAND fi�� 1 �.`Yi 1 180'SIRING 1..11" ..::_a. I N. / IY ROUND SEC11LW 7 • SfLVAI I2-ROUND SECTION!/ :; NOTES.` '1,, 1.FENCE FABRIC SHALL BE SECURED TV CATE "`a W I 7 11. ® FORNE5 w/3 QI ?J NCEELONG SA ED( � FOR TYPES 4&6 L71AIN LINK FENCE INSTALLATIONS 2.SIGHT OBSCURING S ATS 70 BE INSTALLED BY CCNTRACTCINL 7 DOUBLE GATES SHALL BE USED AT BOTH ENCLOSURES 0-10 SCFM SIGHT (NORTH ENCLOSURE SHALL BE TWO 10'WIDE CATES AND WMEfER -0 -0 ��—G PSI AIR PRESSURE SOUTH ENCLOSURE SHALL BE TWO 5'WIDE GATES.) GAUGAUG E (TYPICAL) EQUIPMENT ENCLOSURE SCHEMATIC CHAIN LINK FENCE WITH DOUBLE GATE 1" HOSE r4,,,_ ( COUPLING 1" BLACK FLEX HOSE, I (TYPICAL) OR SIMILAR (TYPICAL) -- i - • (TO AIR SUPPLY LINES FOR AIR SPARGING WELLS) eel AIR SPARGING SYSTEM SCHEMATIC MANIFOLD DETAILS DETAIL A PVC TEE (TYPICAL)- Alk 90' P ELBOW c — — (T— YPICVCAL) X --") 3" PVC GATE VALVE Alk1/4" TAPPED SAMPLE PORT co (TYPICAL) V(TYPICAL) cb VAPOR EXTRACTION PIPING V—FROM WELLS AND VRS-1 N _ o ._� J� ,,� (NOTE—VRS-1 PIPING IS 10" DIA.) TITLE: VAPOR. EXTRACTION SYSTEM. SCHEMATIC MANIFOLD DETAILS OPLC PROJECT: OLYMPI PIPE SYSTEM' FACILITY: OLYMPIC LINE COMPANY CONSTRUCTION 0 LEGEND DETAIL B Maplewood Neighborhood DETAILS 0 - ' AIR FLOW DIRECTION Geo �0En eel's DATE: Renton. WA DRAWING No. \R/ C•"'a 1 9/01/98 SHEET 7 OF 9 6A C. u,,• • I REMOVABLE LOCKING CAP TO CHECK FLUSH GRADE OR SOD COVERED - . FLUSH GRADE OR SOD COVERED THREADED WELL CAP WATER LEVELS AND VACUUM BOLTED WELL MONUMENT (12' DIA.) • BOLTED WELL MONUMENT (12'DIA.) y TRENCH CROSS SECTION REFER TO DETAILS D & E + TRENCH CROSS SECTION REFER TO DETAILS D &E GROUND SURFAC GROUND SURFACE \\�i,\`i'``i/\`i,\`i'`\ij\`i'`\. - `,'\`{j\\jam`\ice\\i\\{ n' \�i'\`*\\i,``ij``i'``i'\`i``ij\`i'\\ii\`i'``i,\`I r-r `\`�'`\�'`\'�\`�'\`�``��`�\`�\` _ CV j i�\�j\/�`j�; \\ \�i\j�\i��\�i\i��\��\ji\Ai _ \\i��\\i\\i\\�\\i\\.\. co MONUMENT RESET IN CONCRETE OD MONUMENT SET IN CONCRETE . i 0 i - 1.5' MIN- 1'BRASS ti CHECK VALVE 2' DIA. SCH. 40 PVC WELL CASING AUGERED BOREHOLE •,'• f-AIR SUPPLY UNE . FROM MANIFOLD r--1 1' GALV.PIPE 13' '' AUGERED BOREHOLE —►3'0 SCH 40 PVC , .:• y TO VACUUM BLOWER 2' BENTONITE SEAL •::L • 2'DIA. SCH. 40 PVC - - NELL CASING(3'- 22.5') n.a' S. SCREENED INTERVAL.(VACUUM) u, 0.020 SLOT SIZE ' , •Y:' ANNULAR SPACE FILLED W1TH WATER TABLE �. _: MEDIUM GRAINED SAND APPROXIMATELY SEASONAL FUJCTUATON) t ADE t - ▪ t t t - .- p WATER TABLE ...... -- ....-.-..• t r APPROXIMATELY 9'-13' BELOW GRADE ' t ., •',• ' r r (OVER SEASONAL FLUCTUATION) CEMENT-BENTONITE GROUT :,• •r'"•' - 2'0 SCH 40 PVC CAP— _ t t j .r.- r r TYPICAL CROSS SECTION-NOT TO SCALE MIN.2' BENTONITE SEAL . • •• rANNULAR SPACE FILLED EXTRACTION WELLS �� - WITH SAND MAX 2'ABOVE SCREEN 2'SCH. 40 PVC CAP t -="==-a_ 2'SCREENED INTERVAL(sPARGE) Note: Depths shown will vary depending on geology 0.020'SLOT SIZE _ encountered at the time of drilling. Note: Depths shown will wry depending on soil conditions encountered at the time of drilling. TYPICAL CROSS SECTION-NOT TO SCALE AIR SPARGING WELLS NEW ASPHALT OR CONCRETE :n f+ �, • •r �;- "..�T '�•�• To MATCH EXISTING •*��ll�{` i�tf�;�� f� �-�fif�f`i'��.f i.!':f'��!tif�et'•-'•ia�.- _ _ f. ��f�!r :J:fifif�':f� frf��fasrefs=tf�ii*':l��l!fr�f�'ar�f`�{ i, LANDSCAPING, GRASS OR GRAVEL �.{.0.•�t•a.��_4i... !{� : LAYER (DEPTH VARIES) ...�.�.....�1gm'l._-•-uZ - _. iii0.11.10s11.11�� fPAVEMENT4CElE1 I =-11 I-11 I- —I —I-1 I I-11 I-III: 1 • � � � � � s:iil�i_.._.- oZ�..._,.. -�,II� I� �I —I I I — — "o•a'; d' d'- —!—►—!= ' '—III—-III—III �I(1a= I I EMI!I I I I-11 I-11 I-' I�—III—IIIIII- o � o��,+(/��o III—III—III—_I I 1.5' MIN '1-111-111—f1 I I I I E I —_ •` �11111—II ZC'C BASE ROCK �0 V2_-111—III—III_ i i.,�.� I III—III— BURIED PIPE MARKER (METAL) ,.5 MIN y--TK—a....n III—III—III—' NATIVE saL 1-I -1j I I III�_T II --111EI n� v `� '1-111-II _I. BURIED PIPE MARKER II `�,, +1r.. ! - AI DS GALVANIZED - - 111-I 11"�(Y 61 aQOL)42QoC) — — (METAL) -- -� =,.`�K—�— i AIR SUPPLY,ONES (TYPICAL) NATIVE SOIL — 61 1' GALV. AIR SUPPLY UNES SAND, PIT RUN OR / ..., i.� I • I3' SCH 40 PVC.VAPOR EXTRACTION ONES (TYP.) COMPACTED BACKFlLL I (TYPICAL) COMPACTED NATIVE �I b I I I I 3' SCH 40 PVC VACUUM UNE(TYP.) SOIL BACKFlLL - I 1 5�MIN. , I �,—, I ,IC LEGEND _ k-- VARIES 1.5' MIN. -----1 TRENCH CROSS SECTION - LANDSCAPED. GRASS AND GRAVEL AREAS 00 NOTES: 1.040. AIR FLOW PATH (THEORETICAL) 1. CITY OF RENTON STANDARD DETAIL SHOULD BE / Se DETAIL E-NOT TO SCALE FOLLOWED IF DIFFERENT THAN SECTION SHOWN. /4 1 SO 2. PVC PIPE SLEEVE SHALL BE USED BENEATH OPLC L C TITLE: ET F PROJECT: REMEDIATION SYSTEM CONSTRUCTION Do SOUTHEAST 5TH STREET. FACILITY: OLYMPIC PIPE LINE COMPANY 0 J • TRENCH CROSS SECTION - PAVED AREAS Maplewood Neighborhood DETAILS o Renton, WA cli DETAIL D-NOT TO SCALE Geo�JEngineers - 1 DATE: 9/01/98 SHEET 8 OF 9 DRAWING No. 6B 0 • evug p'N‘D 'T? 't GRASS C I ,U PLAuTE e.) ,i71 .1voxs Pe-oPC0.TX - \i o i1I!i / �I( , i' y(7/7.1 1 (G 1 / �'7 1/( 777/_/////ff/7,�%/1/ 1 c-oNGQE7C PA)EAA6•-iir 510.00i-LK I i r . .. -4,t -r- o d O. t'Ip 6 o i �. e I jc bC'� 1a7v � j oa0 C b{ N�TN r 1/ R\F5 1,SININ D:'v�aDe c,0CJ'� Road 176 8" SASE? ROOK oIt (,avhPAcre-D VARIES 2'MIN _---- suC.GRADE i lir , ., . ._ - gut.alED PIP& 1-1A121r52 • > Z in VA-CUUN\ LINE CTyP) _Jul _ fl taI" -At RIr� SO L1NL V+,eles 1v Mil Y C7Y P., 03 lie Liw CO = 0-- Cot?A-TED 5 Af.,ie-n L.L. U co WI ° TILE I Ro,l/ rq WItTEZ. LINE . VNsD\sTul'13e1D /VAT►vr So1L cr t Z,o N'Ee7 I 0 • No-feS • 1 up To ( VPGv'NI L1pes Ai.)[) S A.IR sPAuvg L/1NIJS ,_BuAJDLeb T06rarNbR \N SA-me PIPG I erp, WA.-cr (ire t^)\U bc- 1,c r'd lLr� Pofi-k led' b 4 r 0,\A-r-cct,'o., od rG.,c6;6_)s., P y, I v) I �J s—, c) a� C WO C 0 T44t L F S.ci� A-- ` =\«\ r •"Ii' -% . ' m o • 0 m a J * 4 Cs,at • o VAPOR EXTRACTION SYSTEM MANIFOLD (NOT ALL PIPES ARE SHOWN) o SEE DETAIL B FIGURE 6A MINIMUM 100 GALLON MOISTURE 8—FOOT HIGH CHAIN—LINK SEPARATOR DRUM ON VACUUM FENCE COMPOUND ON 4" —3" PVC SCH 40 WITH LOW AND HIGH LEVEL THICK CONCRETE PAD VACUUM.LINES SWITCH AND HIGH LEVEL FOUNDATION (TYP.) ALARM �� 0(� �O i, VRV ED : 0 1" AIR SPARGING POWER POLE LINES TO AIR SPARGING VACUUM 30 240V SERVICE WELLS (TYP.) BLOWER(S) n 0 0 CONDENSATE AIR SPARGING BATCH TANK CONDENSATE SYSTEM MANIFOLD 200 GALLON w/ A. TRANSFER PUMP tJ (NOT ALL PIPES HIGH LEVEL ALARM (-- ARE SHOWN) (SEE DETAIL DRAWING 6A) ilom 0-25 1 0 AIR PRESSUREPSISYSTEM GAUGE e N_ DOUBLE GATE cn PRESSURE RELEASE VALVE SEE DRAWING 6A w WITH SILENCER o Z TG _ y CATOX z a- VAPOR AIR COMPRESSOR TREATMENT O Q 11 OR BLOWER WITH 1 UNIT o HEAT EXCHANGER o w t 1" GALVANIZED IF NECESSARY - W PIPE OR SIMILAR 4 SP 4" THICK FIBERMESH -- 1" BALL/ CONCRETE PAD GLOBE VALVE1\ EXHAUST STACK NOTES: 1. THE CATOX WILL BE LOCATED IN THE NORTHERN ENCLOSURE. THE VAPOR EXTRACTION SYSTEM EXHAUST_FROM THE SOUTH SYSTEM WILL BE ROUTED VIA_BELOWGRADE_P_IP_IN.G TO THE CATOX IN THE NORTHERN_ENCLOSURE (MANIFOLD NOT LEGEND:- SHOWN.) 2. ACTUAL ORIENTATION OF COMPONENTS MAY VARY FROM SHOWN. illi FLOW DIRECTION TG = TEMPERATURE GAUGE 3. ELECTRICAL, NATURAL GAS AND CONTROL CONNECTIONS NOT SHOWN. co a SP = SAMPLING PORT , N PF = PARTICULATE FILTER 0 o VRV = VACUUM RELIEF VALVE PROJECT: REMEDIATION SYSTEM TITLE: (DILUTION GATE VALVE) OPLC SCHEMATIC FAciLm�: OLYMPIC PIPE LINE COMPANY AFG = AIR FLOW GAUGE - EQUIPMENT LAYOUT o o Maplewood Neighborhood Renton, WA PLAN VIEW Geo� ,Englneel'S 1 FATE: 9/01/98 SHEET 9 OF 9 DRAWING No. 7