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WTR2700599(6)
S TALBOT HILL [ ^O —� W-509 ll Construction Correnoondence SCHEDULE C SCHEDULL D SCHEDULE UNIT UNIT UNIT QUANTITY PRICE TOTAL QUANTITY PRICE TOTAL QUANTITY PRICE TOTAL i Trench Excavation Backfill and Compaction �640 LF E 10.00 S16,400.00 5,000 LF S 5.00 $ 25.000.00 5,100 LF 5.00 25,500.00 Imported Granular Material -- for Pipe Base, Pipe Zone, i and Trench Zone Backfill ( 1 .200 TONS 12.00 14.400.00 3,420 TONS .01 34.20 900 TONS 01 9.QD Foundation Stabilization I 12 TONS .01 .12 24 TONS .01 .24 36 TONS O1 .36 Asphalt Corc•ete Pavement 1 ,060 SY 10.00 10,600.00 1 ,50C SY .01 15.00 400 .01 4.00 Gravel Surfacing 750 SY .01 7.50 4,300 SY .01 d;.00 I 4,Sg0 J .01 45.00 16" Pipe and Fittings 5,000 LF 24.00 120,000.00 4,435 LF - W.* 106.440.00 'installation of City furnished , 1 16" pipe 665 LF 4.00 2,660.00 ( Blowoff Assemblies 2 EA 500.00 11000.00 E ! Connections to Existing I Pipelines 2 EA 300.00 600.00 3 EA 800.00 2,400.00 i t EA 800.00 3,200.00' a Test Stations 4 EA 800.00 3.200.00 2 EA 1 ,000.00 2,000.00 J 3 EA 1 ,000.00 3,000.00 ! Service Connection -T-- -- - Transfers _ 15 EA 210.00 3,150.00 ! B EA 210.00 1 ,680.00 Fire Hydrant Assemblies 3 EA 1 ,000.00 3,000.00 7 EA 1,000.00 7,000.00 Air-Vac Release Valve (2") 1 EA i,000.00 1 ,000.00 ' 4" Tapping Tee and Tapping Valve ) 1 EA 1 ,100.00 1 ,100.00i 16" Butterfly Valve (See Note 2) 1 EA 3,000.00 3,000.00 3 EA 2,000.00 6,000.001 Installation of City Furnished 16" Butterfly Valve 2 EA 800.00 1 ,600.00 TOTAL (exludina sales tax) 98,507.00 161 ,232.00 159,238.36 ( 1 . Concrete surface restoration for driveways yet to be determined. 2. Schedule C and 0 with Chamber. Schedule 3 without Valve Chamber. i t i SCHEDULE C SCHEDULE D SCHEDULE J t UNiT UNIT UNIT ( QUANTITY PRICE TOTAL QUANTITY PRICE TOTA` QUANTITY PRICE TOTAL Trench Excavation Backfill f j and Compaction 1 ,640 LF S 10.00 S16,400.00 j 5,000 LF S 5.00 $ 25,OD0.00 5,100 LF Imported Granular Material -for Pice Base, Pipe Zpne, and Trench Zone Backfill 1 ,200 TONS 12.00 14,400.00 I 3,420 TONS 01 :4.20 900 TONS Foundation Stabilization I 12 TONS .01 -— .12 � 24 TONS .01 .24 1 i 1 .06c Asphalt Concrete Pavement - SY 10.00 10,600.00 j 11500 SY .01 15.00 400 SYI Gravel Surfacing 750 Sy .01 7.50 I 4,30C SY .01 v3 16" Pipe and Fittings .00 4l,500 Sy I 5,000 LF 24.00 120.000.00 i 4,435 LF 1F+,5 $ a ion o rty urnis e 1 i e i ! .4" Pipe and Fittings 665 LF BlOwoff Assemblies 1 205 LF I 2 EA 500.00 1,000.00 Conrections to Existing -- Pipelines 2 EA 3CO.00 600.00 3 EA 800.00 2,400.00 ! 4 EA Test Stations 4 EA 800.60 3.200.00 2 EA 1.000.00 2,000.00 3 EA Service Connection — — -- — —-- t------- i Transfers I 15 EA 210.00 3,150.00 8 EA 1 Fire Hvdrart Assemblies ------ I 3 EA 1.000.00 3,000.00 I 7 EA ( Air-Vac Release valve (r) —— —_-- I 4 Tapping Tee and — Tapping Valve 1 EA St;l90 16" Butterfly Valve (See Note 2) 1 EA 3,D00.00 3,)00.00 5 EA Installation of City Furnished 161. Butterfly Valve 1 2 EA l T_OTRL (exluding sales tax` -- I . Concrete surface restoration for driveways yet to be determined. c�a�y,�ln r and r! wt•� C :(hedule J without Valve Chamber. *1 un4 Ain FA I -� k�5 w�� ,�.,� i - i ,r :v i 0=.w�, -- ,_. - - �,.�, ., ten..,».e. �......,�...-�v M iNwc�r,ou to i off, Ft�a '/(Ks f».ioy ., .x; SUBJECT71�9Lc�,B�-_-oJ_.,1L�/J`- /�/^^��---pp---- ;�,� /� •tE Z�/� O/ PROJEL� NO QrA"66 �Ear^_tUD/NCa tC0775 7ERGM1eE — TALBOT NIL( Hcjme-4 357.85,,t.,d, �- G� Y r' �,732 i98 -Ivy z_ /Sg ss TA dT N/Zz 11On,7�� � K 554,5i'8 # z = /2.64ale-i2a. 1)6;' <l I t 3CO7773 7 76 /!� 5- /1c7/Z �Gf Za /3��GZC/If'�< 112017 �t E/ 325 7YPe f DO Ti(JGE WA7?�!--e 3000 . /SO 3' /z , Art, l TALBOT HILL PIPELINES SUMMARY OF EXTENDED TOTALS FOR SCHEDULES A THROUGH I SUM OF EXTENDED TOTALS FOR SCHEDULE A Estimated Sales Tax 8. ...... . . . . . .. SUM OF EXTENDED TOTALS FOR SCHEDULE B 00 Estimated Salas Tax 5. .. .. . .. . . .. . . 00 SUM OF EXTENDED TOTALS FOP SCHEDULE C Estimated Sales Tax 8. . . . . . . . .. .. . . 60� SUM OF EXTENDED TOTALS FOP SCHEDULE D 5�16��23��44��� Estimated Sales Tax I. . . . .... . .. . .. ;?,,, SUM OF EXTENDED TOTALS FOP SCHEDULE E Estimated Sales Tex a. . . . . . ... . . . . . SUM OF EXTENDED TOTALS FOR SCHEDULE F .00 Estimated Sales Tex 6.. . .. . . . . . . ... SUM OF EXTENDED TOTALS FOP SCHEDULE G Estimated Sales Tax I. .. . . ... . . . . . . - 00,,. SUM OF EXTENDED TOTALS FOP SCHEDULE H e Estimated Sales Tax I. . . .... . . . .. . . SUM OF EXTENDED TOTALS FOP SCHEDULE I 8..�1. ....2... F ).Do E Estimated Sales Tax 2. . ... . ... .. . . . e SUM 0/ EXTENDED TOTAL6 FOR SCHEDULES A 7HP000H I f.... .. .. ...582,759.70... Sum o2 Estimated Sales Taxes I. .;;j469;0� .. .I it �G 7L 0.00 I�t�A�.�wsJ / p>I. 7:w1 .••• G 4Ji•G.x.L 313 `" 85 ilk ass s', ice,Bl 14114 —i SUBJECT _c, ! -/Ry��►_,( • __ By _�+,L I /'a —_DATE _ fit z%l r.�<lJi�_.►Et� —l/SS SHEET NO. —_ MOJECTNO._= �µ(je.L-!.L a.►4......�L. j'do`�• . .�.. �!a•'1..ss. ^.s{ .Ec.,...GG 46 � o� fa...— Ga- A.b's.._......4 "'�ryh��' eyyyyy { t rZO.Or �•.�/�•�4�'�t. z--1��r22.0 t�v {{{ 36•00- Zoo -- f r r..-e. lee.. .i�.�..at. 'i3Y.ao VdA - 4�f t— WEJECT_ 4 C( Cf i✓TT'O^l. _. ._____ AV /E�`., _DATE_�.r..�lE1A Fr, I SHEET No._LV_. ^f PROJECT No. SIG.'W_sczj-_ ,�L1t4t,4[,c(,,, lLG�. CD: f. �u p �C.'� � t211 p` /+Grn .Li�iu i�•..L2,',, rJCJ(EeG.ft� 15r� d �ao�+ L Go:t F JZ" Sac /cf,fS'/No 1&.25 .27.24 • L /2" (-� /2' �7oG '►2,571.St y�i,S3 � � s "` '^C`�A' ' c 1 lnj� t •02`M[...�• u,,•i� L % c i.1�5. tip' oo GG IL o.� � u+s•: �!�/ a.-u.�(6.... Lam.� - 6 31 .16 WlIECr_SSGt..__ Za7N__—_ BYOAT[, Fawl _ — SHEET NO._-1— o/ _ of_�---_.. �f M10JFM NO..�y�J/�Gy (A,,,, K. 1 Cvofi Xµ�..:Sj r 4fla /S�.i .wf Sojcµc��j/,•.. 2; a :_t</ It n L /yti'w 1 t � <,� hw� ilw�. _ " l• lyc. .S�-/•/ .N.�'.a�{f ,-• If ay,. . Vr =sR eai s a /8izss �3 �27f,�/ ► 94, GL L arr ftLoc*7'bJ- Ti A+LtA� lja..4t..•,r�fl.a�i i W DA SUBJECT—rQ,�,j_ rJ _511_. —.-- By SHE£r No. -- �ir�iu� TOTAL FpeJ7iGcr r /ZOO TofA(� Corr : � 32J48D./9 /ice /%c.i� ♦ f•[�• /•:� Cocr �K i'oer Js �2.724 q/(o c..L.:, ea ozo . . f [�Jr H11ecs�vr-. 10 "lie" t .� : , f 2.G�i19 SUSJECT_ Cots !' o[!n_!1'e,� -.----- ---- - nY� L C+(�`_'y'rJ _. DATEF 1s'N. <.;� , t ul — y t— ''T - _ _/�� _ _ _ _ SHEET No. . _ Z _ of L_ I _ _XC -1'L�_ -.. .___ PROJECT NO. Thr,4i-- Co_ r :.= ! Ef(.,O`/9.70 jcci� r �a t /• ,) C '70. 7-7 Sfic. �1 F c� fo kfh/ R!/e.-A av7., � - { +Ir C•..C,. ..a.� e (,,,7 Allcrn l,t• Ta cJ r..a•l,,�yse I.f. 61 t.a,. ( .t,.c.. SUBJECTf_ e, 46:, DATE • _ _. _. ._ ` _.. —pr_ _/. _ _ SHEET NO. �• 'o,/ IAOJECT NO._ ..SC_/ W, __— TeTnt F'eofa..�t • /bJiO 1eT HL CG.1 a � "�L �i79.F.: r/� Y•a+•i • „n,l,. /•-y� COS7- Ft ner Oroa �Z .'hl. /O• "S$- ,� ��" /17 �� 6(le tn. 7{ Fps eIZ"i .•rr t �. / U% zo4 /11 r� �i Sty / ♦ G.�eC2 rL /a •O/ .:r.-�' '/L �r y.+./.� Ad ti.-yl roc- `_A eY � rw� � 6.-:caw.( ,•irul�{ roao'+ �K•1.:�,= f�/S,d2o. %4 ,.,� pp rz"d t3G.00/�. yz •�.,b.00/{'� it zzo'/ 3G.00 x aq o' a 4i ova!! A� 40 T.raG �d :EJ q_ 4 1y.07 = /S1/St797 T.ra fie Cosy f}//oca riery _GC>'Y�_ �W�. _•r'.. ._ . Y"^I `"1_ _ DATE H,k �IHIL!_ RojecT N 7 : '7 . o L_ i JG,C<j�� ,� a�fo (y8�o.• '3� :�r,:.�:. mac:>.! . I��9�f. `��, % i��' �f`r<; _ �•IF,Fy.bc 206,E h: '13r :.� / t7 - j3s2.o'� - ��7/�•� C.i c C 4l GY... E 32 cc tt ;/? i• wlfJ.)0/f 7�� K !bG ' � G = j7GG _� s r .? . •TQnt.iAw.f L�.a. r 'Y1,239.//• 4 /o p,.rest,s. (A i f.t P.at—ji—oR—R—s�.K.'0&17 S1070.0 June 11, 1981 Renton Construction Cocpany 10601 Rustic Road South Seattle, Washington ATTENMON: Mr, Bruce Gould SUBJECT: Thrust Blocking Design Dear Bruce: We ha-e completed our design of the thrust block required to restrain the 22� degree bend at station-I + 77 of the Talbot Hill pipeline, Schedule E, for the City of Renton. The thrust block is detailed in the attached drawing and the attached -opv of our desicn computations, The proposed thrust block will restrain a 300 psi test pressure for pipe acceptance and a maximum flow of 4,000 gam with a 70 percent factor of safety. Please notice that we have assumed the sail in the trench to be sand and gavel with a minimum safe compressive strength of 3,000 psi. If soil conditions are different than this, the proper allowances must be made to the size of the bearing area for th; 'hrust block. The sides of the thrust L-ock must be formed with plwogd to eliminate sty "cantilever" effect and the subsequent cracking of the concrete. The concrete must be a. "ready mix" with a minimum 26-aay compressive strength of 3,000 psi. The bottom and thrust bearing area cf the block moat be poured against undisturbed soil. If you have any questions or comments regarding the concrete thrust black. please call. Sincerely, RH2 ENGINEERING. P.S, ._. .. .._.._. _ Richard H. Harbert, P.E. RUM:Ird . Attachrrnis , Iw�•wl>AI PROJECT 1AFNIORANDUM r$ At A Fn0`.1. SI;ILLING, HELLS,CFI RISTIANSFN, 19OE1[;RTSON, INC. Consulting St, 'aural and Cwil Enginoars 1215 Fourth Avenue, Sure 2200 Seattle. Washirglon 98161 (20G) 292-1200 DAI E. July 10, 1981 r TO Almeter L finley, Architects t 701 Welch Road, Suite 1128 Palo Alto, California %304 •� Arrw. Mr. Ray Almeter .. „ sueatcr VALLEY GENERAL HOSPITAL RE Water Distribution received a telecon from Ron Olson who had two questions as follows: 1. Has the second phase of the water distribution line been completed? I called Mark Nelson and he answered that they are about 70% complete but are stopped now because of power relocation and equipment. They plan to resume work on the water line sometime in September I called Ron Olson back and gave him this answer and also told hio :nat if he needed further information that he could call Mark Nelson directly. 2. Have we informed the owner about the City of Renton increasing the water pressure approximately 70 lbs. per square inch in the existing water line? He said that the hospital may want to add pressure reducing valves on the domestic supply line within the hospital. We called Chuck Spurgeon to inform him of the city's plans for increasing the water line pressure and relayed the message that water reducing valves may be required. Since t1'ly, Ket ogers . KRR/mrh cc: Chuck Spurgeon, Spurgeon L Associates Ron Olson, Renton Department of Public Works Mark Mcison, Centur., Construction OF RF �f o OFFICE OF THE CITY ATTORNEY RENTON,WASHINGTON V � Z •Osr prntt•ow Ua .oc n.a w[nu•wi o,nG • 4mon.w.wnwra. a•oas »spr� 9 b LAW RENC:E 7-WARREN, or.♦rrwn[. DANIEL KELLOGG, ssisr.nr cn..rTo l -o0,9,TED SEpt Es/B�"P July 10, 19$1 SUSAN R. IRWIN, asis v.wr cn.nrp•,asr Mr. Melvin L. Kleweno, Jr. Curran, K.leweno, Johnson & Curran Attorneys at Law P. 0. Box 1126 Kent, Washington 98031 Re: Renton Construction - Talbot Hill Pipeline Dear Mel: Your letter of June 23, 1981 has been referred to my office for response. I suppose the City wants an attorney' to respond since the letter was from your law firm. As yc,u probably well know, all cities are suffering a budgetary crouch, particularly since the Republican adminis- tration in Washington D.C. has cut back severely on funds available to the cities. Manpouer is at a premium and must be allocated in the most efficient manner possible. The City does not have enough manpower available to allocate one full time inspector to this job. The City believes that it has cooperated fully with Renton Construction Company. However, maybe the problem is one of communication. If Renton Construction can indicate ahead of time when it is anticipated that an inspector will be needed, the City will use its best efforts to see that that inspector is available. This does not guarantee that the inspector will be there but only that the City's best efforts will be used. The more warning that can be given to the City, the better able the City will be to respond. I think such a method of proceeding is anticipated by paragraph .1o. 25 of the contract specifications. If your client has any specific recommendations that it would make to facilitate cooperation between it and the City, pleas feel free to direct further correspondence to :ite Utility Engineering Department. Very truly yours, LJW:nd Lawrence J. Warren CC: Richard Houghton Ron Olsen 'rl .. WIN Utility engineering Uep&rtmennt June 23, 1981 Page 2 jab, they will have no course but to bring the matter to the attention of all of the City officials, including the Mayor and Couw'1, and also file a claim for additional oampensation with the City. Bruce and his organization feel that ' with full cooperation from all parties that this can be precluded. lhankirg you in advance for your kind courtesy and cooperation in this matter, we remain, s taery truly yours, CMU M7/ tg^TW, imam i CdAUM M61vin L. Kleusnb, Jr. MLH/1s cc: Brune Wald / LA1N OiI1C[• Carrel,Kkgeno,Jo6eon f Carron ill �V LV[N/t SOVTN too)1[L[/MOML! CM/1NL[[ IKiGw CV[wfN e0{i",.cc [Oa --do (tool!IWS-A Y .[LW" L�fLLMtNO.J[. litnwtw L.Joww{ow V�I. 9e0-A rtwwtwet L.gales Jtrrwn c.L Mfort W.OfVis/! jww 23, 1981 Utility Engineering pepaitJ°ent City of Penton Renton City Hall 200 Mill Street Renton, W1 98055 Attention: Ron Olsen Vie: Penton Construction - Talbot Kill Pipeline Dear Mr. Olsen: This is to advise that we are attorneys representing Penton Construction. Bruce Gould has consulted us concerning the Talbot Hill Pipeline job captioned above. Bruce's concern at this point is twofold: 1) having to do with his Om4any's cast in the job and 2) the cooperation with and from the responsible officials at the City of Renton- As you know, in this tight eoanaiy, the jabs are bid by the contractors on a close basis. Bruce tells me also that the City of Penton, in engineering and letting the project, was working on a tight budget. Bruce has reviewed with me sane events which have occurred in the pest which have cost his canny delays ,,filch equate to dollars lost on the job. At this point, he has not translated these delays into a dollar loss figure. However, he does keep a diary on the job and has chronicled met of the delays which have occurred. Bruce further indicates that he is apprOhcimately half way through with the lob. The point Of this letter is to k for the full cooperation of your department of the y and the other departments of Penton that are involved with this particular job. By full cooperation, we would ask that you and your people be responsive to the requests Of Penton Construction so that there are rot inordinate delays in scheduling of the oonstructim; in inspections; and in any other facets of the jrb which require cooperation and soce task to be performed by the various departments of the City of Renton. Bruce and ibis caqunri' are very desirous that this matter be carried forward in a spirit th s letterafs to between themselves and the City, and, again, the purposejob with the ask your and your people's full cooperation in accomplishing this j least amount of additional expense possible. At this point, Penton Construction wants to keep the matter within your Particular However, if Renton Construction feels that they are not receiving the ation necessary and that it is costing them additional dollars on the Page 1 sb. Transfer the following accounts within the 1975 Water and Sewer Construction Fund as follows: 415/000/15.534.30.65(06) Telemetering Upgrade $ 50,000.00 (09) S.W. 43rd/Talbot Res. 121.169.60 (11) 21" Wells 142/2nd - Burnett 34,280.70 (13) Talbot Hill Wtr Sys Improvement 13,136.66 (14) 24" 2nd d Burnett/Rol Hills 10,000.00 (17) Steel Main Replacement 50,OD0.00 (18) West Hills Res. b Study 10,000.00 (19) Sanitary Sewer Rehabilitation _50,000.00 TOTAL $338,586.96 Also appropriate funds from: 415/000/00.501 .00.00(00) Ending Fund Balance $183_139.00 To the following account: 415/000/15.534.30.65(20) Water Systems Improvements/ Hospita TOTAL $521 ,825.96 For use By City Clerk's Office Only AGENDA ITEM RENTON CITY COUNCIL MEETING varar.v.rsvr......v.a.rarrr..o va . ....ar........o.w....... . SUBMITTING Dept./Div./8d./Comm. Public Works DepartTsent For Agenda Of June R, 1981 Meeting Date Staff Contact gim t Name Agenda Status: t , SUBJECT: Transfer of funds within 1975 We ter Consent E Public Nearing and ewer Construction Fund to Water Svetesu Correspondence Iwprovesents/Hospital Account. Ordinance/Resolution I Did Business Exhibits: (Legal De sc r. , Maps, Etc.)Attach New Business - Study Session A. See attached sheet. Other B. tpproval : C. _ Legal pep[. Yes E No_ N/A_ COUNCIL ACTION RECOMMENDED: Referral to Ways and Finance Dept. Yeses Nov N/A— Means Cossitcee for proper resolution. Other Clearance FISCAL IMPACT: Amount Appropriation- Expenditure Required $521,825.96 Budgeted 5521,825.96 Transfer Required $521,825.96 SUMMARY (Background information, prior action and effect cf implementation) (Attach additional pages if necessary.) - (See Attached Sheet) PARTIES OF RECORD/INTERESTED CITIZENS TO BE CONTACTED: 4 ;, f X SUBMIT THIS COPY TO_CITY C.LEPN BY NOON ON THURSDAY WITH DOCUMENTATION. } EXHIBIT "A" RESOLUTION N0. 2I07 TRANSFER FROM EXISTING ACCOUNTS IN 1975 WATER & SEWER CONSTRUCTION PROJECTS AND FROM ENDING FUND BALANCE TO WATER SYSTEM IMPROVEMENTS/HOSPITAL PROJECT: TRANSFER FROM: 1975 WATER & SEWER CONSTRUCTION FUND EXPENDITURE ACCOUNTS: a/c 415/000/15.534.30.65.06 ------------- S 50,000.00 (Telemetering Upgrade) a/c 415/000/15.534,30.65.09 ------------- 121,169.60 (S.W. 43rd/Talbot Reservoirl a/c 415/000/15.534.30.65.11 ------------- 34,280.70 (24" Wells 1 & 2/2nd - Burnett) a/c 415/000/15.534.30.65. 13 ------------- 13,136.66 (Talbot Hill Water System Improvmt,) a/c 415/000/15.534.30.65.14 ------------- 10,000.00 (24" 2nd & Burnett/Rolling Hills) a/c 415/000/15.534.30.65.17 ------------- 50,000.00 (Steel Main Replacement) a/c 415/000/15.534.30.65.18 ------------- 10.000.00 (West Hill Reservoir & Study) a/c 415/000/15,534.30.65.19 ------------- 50,000.00 (Sanitary Sewer Rahabilitation) a/c 415/000/00.501 .00.00.00 ------------- 183,239.00 (Ending Fund Balance) $521 825.9¢ TRANSFER UNTO: 1975 WATER & SEWER CONSTRUCTION FUND: a/c 415/000/15,534.30.65.20 ----------------- E521�825 (Water System Improvements/Hospital) I CITY OF R,N10N, WASHINGTON RESOLUTION N0. 240? WHEREAS it is necessary and advisable to transfer the below specified funds and such transfer being necessary and in the nublic interest and for the Public benefit , NOW THEREFORE THE CITY COIJJ:CIL OF TILE CITY OF F£4JTON, WASHINGTON, DO RESOLVE AS FOLLOWS: f Finance is hereby authorized SECTION I: The Director o e the following transfer: and directed to mak See Exhibit "A" attached hereto and made a part hereof as if fully set forth herein. PASSED BY THE. CITY COUNCIL this 15thday of June, 1981. e ores , ty er , APPROVED BY THE MAYOR this 15th day of June, 1981. Mayor Ba�re'q, innoc. Approved as to form: xriirne•i FOR RELEASE: Immediately 1 Early in April, the city of Renton will beiin construction of approxi- mately 16,000 feet of water transmission pipeline along Talbot Hill Road. Construction should be completed in August 1981. During the construction Period, traffic congestion will be encountered along Talbot Hill Road beginning at S. 19th Street and extending to S.W. 43rd Street. There also will be som- disruption along S.W. 43rd Street and S. 177th Stzeet, }n the Scotts Terrace subdivision. ,t The water system improvements are aimed at increasing the syst-m's reliability. The aging Springbrook transmission line along Talbot Hill Road, which will be replaced by the new pipeline, was constructed in 1927. In addition to the pipeline improvements, a booster pump station is being constructed north of 43rd Street, just west of SR 167. This pump station, along with the pipeline improvements, will provide higher fire flows and domestic pressure. The cost to construct these improvements is $890,000. 000 / INDIVKXUAL SERVICE PRESSURE REDUCING VALVE FOR 3/4'A 1'SERVICE M4'SHOWN) FUNCTM INSTALLATION / THE FUNCTION OF A PRESSURE REWCNG VALVE 6 TO REDUCE THE PRESSURE REDl1CNG VALVE SHALL BE LOCATED ON THE NOW WATER PRESSURES N THE SERVICE CONNECTION TO AN CU6TOMER'S PROPERTY'DOWNSTREA/!OF THE£ITEA ACCEPTABLE RANGE OF 85 TO TS PSI INSTALLATION OF A PRESSURE BOX RESPONSIBUTY FOR PROPER NSTALLATIOI OPEPATIG, REDl1CNG VALVE IS REQUIRED WHERE THE SERVICE CONNECTION AND MAINTENANCE OF THE VALVE SMALL BE ASSU.®BY THE CUSTOMER TREE POSSIBLE CONFIGURATIONS FOR TO THE U EXCEEDS S SO 914G CO PER SQUARE INCH N ACCORDANCE INSTALLATION OF THE VALVE ARE SHOWN BELOW A TO THE UNIFORM PLUMBING CODE BLLDNO DEPARTMENT PLU BW PERMIT 6 REO1•BED PAM I TO INSTALLATION. LOCAL SUPPL ERS _— INSIDE HOUSE -PREFERRED CONFIGURATION 13 FOWLER, 10 7103 2MI HARDWARE.NC. 131/0 9E 301P ]10 B.2Po BELLEVUE.WA REMGN WA 748-9400 235-3593 rs 2. ,6• SEARS ROEBUCK A CO. THE UNION M E JOHT,INC. RE S.W SUNSET BLYD- 351 UNION N.E. y RENTON,WA 228-32RENTOM,WA L1L__ �.`yLL-/'_"__1 228-2J23 22B-3204 � yJ FLOW f ITEM A 1 900 GALVANRED STEEL ELBOW 4 EA. OL=FOUNDATION 2 3/4'PACKING JOINT COUPL04G WIMALE IRON PRE 2 EA. THREAD FOR COPPER PPE SERVICE FORD C84-33 OR EOUIVALENT FOR GALVAN090 PPE SERVICE FORD CBS-33 OR EQUIVALENT r - e •.re„ 3 PRESSURE REDUCING VALVE WISTRANER- 3/4' 1 EA, � WITH UNION COWLINGS AT INLET AND OUTLET, - EOVAL TO:WIKENS#800.WATTS OUSB OR SEARS 042A I789 '• 2 10 3 iG 8 104, /Y 1 3/1'CLOSE UNION-BRASS(M N q 1 EA. Y —'r'��, - S W4'BRASS VALVE VARIABLE FLOW - / F_ W 8 12"STANDARD METER BOX W/SOLD COVER 1 EA. ~— CONCRETE. TI 114 a 28 5/8 INSIDE DIMENSIONS. EQUAL TO FOG TITS METER SEAL CO 02 TO BROOKS METER 4 INSIDE DIMENSIONS,EQUAL ADJACENT TO WATER METER T 3W QALVANCL,' CTEEL PPE.THREADED LENGTH VARIABLE ' AS REOUNEO S 3/4'• 114".3/4'$TD. BRASS TEE 1 EA. ��. ��� i6/ /B• S I I4'PETCOCK(M%F) 'EA- T 61 /0 3/4'BRASS NIPPLE VARIABLE �{ i 4 1/ I ty r 1y OQ �'f: 2 ..-/Y FLOW loll 'r2l WATER STANDARD DETAIL CITY OF RENTON DEPARTMENT OF PUBLIC WORKS .Iuly 6, 1981 Page 2 of 2 No. There are two locations preferred outside the house and one inside the house as specified on the attached standard detail for a pressure reducing valve. Which one of the three (3) locations you choose should be based on two considerations: 1. Accessibility and location of your waterline for ease of installation and maintenance of the pressure reducer. 2. Age and condition of existing water service line from water meter to house. It is probably less expensive to install a pressure reducer inside than out- side. However, it should be understood that your existing water service line, from meter to house, will have to withstand an additional 67 lbs of water pressure if pressure reducer valve is installed inside or at the foundation of the house. It is estimated by our office that your new pressure will be and that you be required to install a pressure reducer. If you are required to install a pressure reducer, please contact this office so we can make a permanent record of your installation. If you have any questions or problems concerning the above, please call Arlene Haight at 235-2631 or myself at the same number. Very truly yours, Ronald L. Olsen Lead Engineering Specialist :ckd Attachment a OF Re 40 ° PUBLIC WORKS DEPARTMENT z _ DESIGN/UTILITY ENGINEERING 235-2631 00 MUNICIPAL BUILDING 2Do MILL AVP. SO. RENTON,WASK 9OD55 9$v�rS0 SEo�F'M�P,o. BARBARA Y. SHINPOCH July 6, :981 MAYOR I Dear Customer: As you are probably aware, the City of Renton Utility Department is installing a new water main in Talbot Road South. This new watermaln will replace the 50-year old, low pressure, 20" steel water-ma In which was designed as a low pressure transmission line from Springbrook Springs to the Talbot Hill Reservoir. The new 12" ductile iron main Ls designed specifically to serve the high aru low areas of Talbot Hill with far better fire flow capacity or more water to fight a fire with. This design required an increase of the water pressure in the system by 67 lbs./sq.in. (Pounds per square inch) . This increase will be a blessing to some who now have only 22 lbs./sq.in. pressure but to others it will be substantially more pressure than they will need. The caximum pressure a home should have inside is 80 lbs./sq.in. per the Uniform Building Code. If your existing pressure plus 67 lbs./sq.in. is greater than 80 lbs./sq.in., you will have to install a pressure reducer in your water service line. This pressure reducer will protect your piping, gaskets on your faucets, dish washer, washing machine, and especially your hot water tank that should have a pressure relief valve set at 150 lbs./sq.in. The City does not guarantee the pressure it will supply to your residence. Pressure varies with each residence based on the elevation that the home is built at. The installation of a pressure reducer, if needed, will be at your expense and should be Installed within 30 days from receipt of this letter. The pressure reducer can be installed by a plumber or can be installed by yourself. A Building Department permit will be required, the fee for this permit will be a minimum of $7.50 per installation. This fee Is to partially cover the cost of inspection of tae installation. Attached to this letter is a specification for the installation of this pressure reducer. This pressure reducer can be installed inside or outside your house as your needs require. par@ sd s•, Y � v • � rr I . C_. 0 �� c Co r �) 0 17 F iJ it c 6T fruu N I Un I Z n 1 1 1 N \/ I r � •u Q .y r1G PICCz �R y l - ].OPI — Cn 7VID co 1irlr c PI , 4 r 9 I � _ i rig ----------------- Z ` LI z f+E Ullin S�r�1J , - w �y t O 11 Q i Fq - ntit _ =t] f� IV 2 (AZ ° 01� I i 7 i. 7 I i i I I I ;. !�^,C'.C.>!J�?J✓_ G: 'h���E V+v„•,`C`..._11„" ..�.....�. TloW L.G =ia.'..0•.r'..G��. rZ _ , ':-lea •_> N�� _ �.:% 1 -. _ _ ,— — F a,_ 1 Y f S 7. 1 L LI i ) 14) 1 j' a7 11) Ilk li 0 Ji It 0 K 1 s i s z i a _ _ ✓rtv r,*• ... � ... —i is __ -etc-:- �f, ' . 1 c �n 1 r fifi i .i1ry � xi'FT� _.. AAiH4M1 >1 . � �#�•, � � ..� �r�i Si�',.4 ' &}" '"'�..inY¢�.�Jia ,� ;; ,, ,� ��I :; I z y �� . , ,lI c1 _, �, � � �i li n l � I d S J "i �� l yi I. G � , - ., I .o , � �� �; ��� �� .1 d '_� �' � , � � } tl I ., �i i _ � �� ICI �, � ,� I l 1 �� n I u a II >< � � � i I I iM t� .. V'V r j �i A a a I Hill I Ili � � C ♦ 67, tn �7 v .R x ` Yi 'z a 113 2 L J! r � j •9 it o n 0- r ,1 U d) I i i a ¥ a Ritp ƒ § $ � / 0 2 w a m f G 4 \ } • } 14 ') ; " I ~! u 4 � f 3 ! u £ 9 { l © [ � ) � & \ n , \ [ , @ . F a.Q �1 !'� 4 � I � a UI !Y i I I fl d � n J g. iy J D I el 1 ( I h to t VI I ■ E q M . _ M ,• •, . N t ,,tty�� '. ,• r a N L _. ______r.�..- • • • Y ___---' � • 7AL80T WILL ! • TALBOT 04ILL PARK C ELEMENTAW (�'� �-,� • ! SCHOOL , DY II r»» t —� '• rAa • ' • _ ��Ar "��� Y � + • • � 1 N -- t s _ -T- • �r �w •• Y�' s: k v a ' A _ •• p lT/ IL r pe`F •� 1 '.T A A A •• Y � .. "vim 1,' - 1 ' • e • � •,(�� �A � v ✓ � , r ,o V , ( ♦ t• • n 1 I� 1•l.+A y,1 YiI ..Y'N..M k I gyp. r *i¢ _ � I i s . I 111 •• f City of Renton Key 21, 1981 Page Two A final consideration is that of system operation and how that affects hydraulic behavior in the system. Currently, the level in the Talbot Hill reservoir is reflected at the springs only when the reservoir is full. However, with today's demand level, the springs do not have sufficient capacity to refill the reservoir unless the wells in the downtown area are allowed to override the springs. Stated differently, the wells are hydrauli- cally closer to the Talbot Hill reservoir and can, th. refore, affect the springs flow rate. The solution used today is that of selecting operational limits for the wells such that they do not dominate the springs supply rate to the system. These reasons have resulted in the conclusion that the existing 20-inch diameter transmission pipeline from SW 43rd Street to Springbrook Springs should be replaced with a 16-inch diameter pipeline. Please contact we If you desire further information regarding this recommendation. Sincerely, RH2,IPCINEERING, P.S. 4�&VAW". y Richard H. Harbert, P.E. RHH:lyd tiE .. s Engineering S1D53.0 May 21, 1981 City of Renton Public Works Department 200 Mill Avenue South Renton, Washington 98055 ATTENTION: Mr. Ron Olsen SUBJECT. Springbrook Road Transmission Pipeline Replacement Dear Ron: An examination cf the size pipe necessary to replace the. existing 20-inch diameter pipeline in Springbrook Road has been accomplished. Current and future operation of the existing system have been considered, as well as conditions which existed during development of the otiginal 20-inch diameter pipeline. The result was that the existing 20-inch diameter pipeline should be replaced with a 16-inch diameter ductile iron pipeline. Tte remainder of thie letter ducuments reasons for this result. The original sizing of the 20-inch diameter pipeline was based on demands which were substantially less than exist today. Consequently, most of the 1,200 gallon per minute capacity from Springbrook Springs had to be trans- mitted to the Talbot Hill reservoir. Current demand levels are su,h that a good deal of the spring's capacity will be -onsumed in the system prior to going into the reservoir. A second major difference between design conditions for the original 20-inch pipelinz and today's operation is that the part of the City's water system in the industrial area was not developed until the last ten years. Today, the mayor north-south transmission is provided by the grid of pipes in the indus- trial area, which is the hydraulic equivalent of a 24-inch diameter pipeline from SW 19th Street to SW 43rd Street. This factor allows a smaller pipeline as a replacement for the 20-inch diameter pipeline from SW 43rd Street to Springbrook Springs. 300- 120th Avenue N E Suite 219. Bel*vue. Wa 98M 12081 451 OS85 RENTON CONSTRUCT/ON CO) P�NY�2 City of Renton Public "forks Department D-siCn/'tilityy 3ngineering -acipal 2uilding Renton, WA 95055 Attentions P.onald I.. Chen The following is our proposal for rock excavation for the Talbot Nill Pipeline Project 1.1-5991 We have ficured the excavating and backfill by the cubic yard plus a lump sum for crossing Seattle's 60" watermain. The extent of rock is -unknown but appears to be linited to Station 11+00 - Station 15+00, but there nay be more rock south of Station 15+00. The only difficulty with a cubic yard bid is we must insist on considerable latitude retarding width of the ditch. We found, when excavating for Schedule A, that the top 5 to 6 feet of the ditch was fractured rock that raveled when dug, creating an extremely wide ditch. The rock below 6 feet was so hard we were unable to dig without the use of a backhoe- ,nounted hy!raulic rapid-ram hammer. We do of feel that ti-e -material is suitable for backfill, but if mixed with 501 rrranular material it could be used to 3' of finish grade, then bank run gravel could be used for top 31 . This would require approx.mately 1600 cubic yards of Imported material for the 400 foot run. Due to expenses such as moves, 'asuranc-, shoring and the method used in bidding, these costs are in addition to all bid items. It must be understood that this price is based on bein;; able to excavate without blasting. If blasting is required, and if allowed in the area, there would be additional costs. It would be necessary to close the street to thru traffic for the duration cf the schedule. Estimated quantity of rock to be removed ,000 cubic yards 0 $49.23 per yard 98,46o.00 Lump sum to cross Seattle's 60" ''Watermain o 213r;-0 Tax 6 12G.84 h 9iI"';38'�3L 10601 Rustic Rnad South / Spa,ve Washtnotnn Q8178 / Phnme 772.?0FK City of Renton Page 2 April 24, 1981 513613.A9 The table below summarizes the costs to excavate for the portion of pipeline in the rock. The quantities were es- timated from the following assumptions: average depth of rock is 17 feet, side slopes of 4 vertical on 1 horizontal, e and 400 lineal feet of rock excavation. ■ COST SUMMARY Cubic Yard Type of Cost Per Per Coat Per Total Excavation Cubic Yard lineal Foot Lineal Foot Cost Glacial till, backhoe $2 to $3 5 $10 to $15 $4,000 to $6,000 Rock, rippable with backhoe $4 to $9 5 $20 to $45 s8,000 to $18,000 Rock, jackhammer and excavation $12 to $30 5 $60 to $150 $24,000 to $60,000 The above costs represent our estimate of the actual cost to perform the work and are not necessarily comparable to con- tracted work and costs. Typically, contractors tend to un- balance bids, and the cost proposed for one item of work does not always reflect the true cost. A negotiated change order should be based on the difference between excavation in glacial till versus the actual conditions encountered. The wide range of costs is due to the uncertaint.es in the production rates. To reduce the range in cost, we recommen ' excavating rwo test pits at approximately stations 12+00 and 13+50 to determine the most feasible method of excavation and to quantify the production rates. Please call Jim Butt or us if you would like to proceed with the test pits. Sincerely, ` Arthur J. O'Brien Geotechnical Engineer Prank W. Pita, P.E., P.G. Geotechnical Department Manager kcn h> f SHILL EXHIBIT "C~ engineers planners economists scientists April 24, 1981 S13613.A9 City of Penton ■ Public Works Department r Municipal Building 200 Mill Avenue South Renton, Washington 98055 Attention: Mr. Ron Olson Gentlemen: This letter summarizes the alternatives and associated costs regarding the rock excavation for Schedule C of the Talbot Bill pipelines. Four alternatives were considered for the excavation: (1) drilling and blasting, (2) tunneling, (3) ripping with backhoe, and (4) backhoe-mounted jackhammer and excavation. Drilling and blasting were not considered because of the danger associated with blasting adjacent to the existing gas main. Past experience indicates that tunneling is a very costly alternative. The cost to mobilize a tunnel-boring machine to tunnel 500 feet makes this alternative prohibitive. The third alternative assumes that the rock can be ripped with the size of backhoe required to dig a 25-foot trench. Our experience indicates that equipment such as a Caterpil- lar 535 or equivalent will be required for this type of trench. Typically, excavation of glacial soils with the above- mentioned equipment will cost $2 to $3 per cubic yard. When ripping rock with a backhoe, the production rate decreases and therefore will double or triple these costs. our esti- mate of the cost to rip and excavate the rock is $4 to $9 per cubic yard. The fourth alternative assumes that the cock is not rippable with a backhoe but can be broken up wit.. a backhoe-mounted pneumatic jackhammer. The broken material would be excavated with an additional backhoe such as the Caterpillar 535. This alternative is the costliest because two pieces of equip- ment are required and the production rate is further decreased. Our est:mato of the cost to excavate the rock by this method is approximately $12 to $30 per cubic yard. 10'IIIf eNK, Jim Butt Page 2 April 15, 1981 513631.A9 24-inch water line. One of our geotechaical staff should be present during the excavation. If the test pit is not excavated or if the results of• test pit indicate that the sandstone can.iot the be ri following options are available: pped, the 1. Plan on drilling and blasting from :ta 10+30 to Sta 15+50. This will be a difficult operation tecause of the other utilities in place. Blasting adjacent to the 16-inch gas main is very dangerous. 2. Reroute the 24-inch line to avoid this rock outcrop on the top of the hill. 3. Abandon this line and use the funds to construct or repair other lines. 4. Provide other hydraulic solutions s'3 that the 21-inch invert can be maintained at a grade along the top of the rock (pump station, siphon, etc. ) . EXHINT " $" Gi2MEHIu MEMORANDUM TO: Jim Butt FROM: Art O'Brien DATE: April 15, 1981 ■ SUBJECT: Talbot Road Pipelines ■ PROJECT: 513631.A9 I spent approximately 4 hours on the site inspecting the drilling operation. I arrived on the site after two holes had been drilled and during the progress of the third. I inspected holes B-4, B-5, and B-6. A truck-mounted hollow stem auger was used to bore these holes. No samples other than grab samples from the auger were taken. Most of the information about material type and consistency came from the driller and hin interpretation of how the rig responds. okf.. � The contractor (Bruce) , city inspector (Bill , and the drilling crew were present during the drilling. The results of this investigation are shown on the attached figure. Conclusions follow: 1. The top of rock is fairly well defined by the six borings. 2. From discussions with the contractor, the tan sandstone encountered in the bottom of B-1 is not rippable with a backhoe. 3. The other holes indicate that the gray sandstone appears rippable, but it may become too hard to rip in some places. 4. All of the borings indicate the variability in consis- tency of the sandstone. Some areas may be rippable with a large backhoe and pneumatic point; other areas may not. To further assess the practicability of ripping the sand- stone, I recommend excavating one or two test pits at approxi- mately Ste 12+00 and 13+50. The equipment used for the test pits must be the same as that intended for excavation of the �F: ter—• A \ rA i t� Zq 7< �' v-•C:T/T frAI17f� T yA° c'�<. 9:ATroN _" __ _ _. \ •. -OLXf11I� IY•�,� SS. LL R1W _ .•e c _e 2 '� f rHFUULE B S TALBOT ROAD " I"' - V_� NM l rlypf•,y./T ASSv .,{^1R /•J�S.7 _' 1T4 /JrQ,S .f•1/ S J • MTi3 7+3ZT�iFfMiT-- C/Tf W/ 90/I T�R • 6sO A.L� cS3V/.AB�T ]O Ew'9T 4"W W/ - AA31 /N 4PCMC6 /7tlM tiE (:a✓ 1C . t-O•I .KLiLCG!!•M•MJ/ \ Gf( sL3r • wwTEv !YA/Cff .:GtvGT2uC>0'v OI• '1'w [-4•f9'mFi.'OS(MJ•Mil OULE O RILNLICY/ IwST IOW /1fOGE6Q9. xeEM * l T 4-4•N/R1rCC3 go T05TA /5•/O R. /-4" +aG IMJ.MJf as a.rp :O•Lb I.qj 1rW :f•� /•Ki7 I¢Ci' 1 I 1 Y• 'F•l0 St..O.M f• 4.0 ftl OI• STL 6a1 3 f f.5 &I ■-f B-Y V. OA 41 t IE 12 W SCHEDULE A., -XI _ gems 1 oKtl'MNE IL11u rw Am"o/ l..- ..'.. ` Exi T wMwar 6 s•�cc*a 11•W ` •' 6� sW iu fwlMlrft .. _ l ;n�` O5 ] STR rJ'Ct7 rfw M.A3J I ROFI EXHIBIT A W-ffl"m CIiY 0E Hf"TO" SCHEDULES• B f C r�fHnaroe TALBOT ROAD PIPELINcS STA 3 t 20 TO 15.DD D11F` I1l1pT NRl I�IE\N9ff ff SC.IFWIf{I fX11WGM i A• 7. AA d� F A f TO: Charles Shane, Chairman and Members of the Utilities Committee June 2, 1981 Page 4 �f 4 Revised June 5, 1981 The actual contract change for the above recommendations would be as follows: Present Contract Amount $614,228.72 Change Order !1 (Soil Borings) 1,710.11 Change Order I2 (Rock Excavation) 2,363.59 Total Contract to Date $618,302.42 Less Schedule "C" and "D" (273.766.02) Estimate of Additional 12" Main 18.000.00 Estimate of Additional 16" Main 184,000.O0 Estimated Amount Altered Contract $546,536.40 It is important that we resolve this matter to provide the contractor with authorization to proceed as socn as possible. We will be available to provide any additional information you may need in your review and approval of our recommendation. It to the recommendation of the Public Works Department that the report be approved by the Utility Committee and that the committee recommend approval by the City Council. Ronald L. Olsen Lead Engineering Specialist i f :Richard C. Ho on Acting Public Works Srector :ckd Attachments A - H cc: Mayor City Attorney TO: Charles Shane, Chairman and Members of the Utilities Committee June 2, 1981 Page 3 of 4 It is recommened that Schedules "C" (the 24" watermain) and schedule "D" (the 16" watermain) be deleted from contract CAG 019-P1. The present contract amount of CAG 019-81 s $614,228.72. By deleting Schedules "C" and "D", the contract amount would be reduced by $273,766.02 or approximately 45%. This much of a contract reduction would undoubtedly require some sort of a penalty payment by the City to the contractor. In lieu of this penalty payment to the contractor, it was determined that one other project very much in need an" very similar in nature might be substituted. This project is the replacement of the 20" steel main South of S.W. 43rd Street to Springbrook Springs Reservoir in Talbot Road South. This was a proposed project in the 1975 Bond Issue as well, as a primary project In the recently proposed bond issue. It has been determined by RH2 Engineering that this transmission line should be replaced with a 16" watermain at a depth of 4 feet which is iden�ical to Schedule "D" of CAG 019-81, and a similar length. See attached letter, EXHIBIT "E", dated May 21, 1981, from RH2 Engineering. Renton Construction was asked if they would be willing to substitute this installation in lieu of a penalty payment. They agreed that they would be willing to install th, 16" main South of S.W. 43rd Street at the same unit prices as in the existing contract for bid Schedule "D" for 16" watermain. It is therefore further recommended that the City authorize Renton Construction to install or replace the existing 20" steel main with a 16" ductile iron watermain from approximately 400 feet South of S.W. 43rd Street to Springbrook Springs Reservoir. This would eliminate the last of the old leaky 20" steel main from our system. It is also recommended that the existing 20-inch steel watermain in Talbot Road South from the Talbot Hill Reservoir to South 177th Street be abandoned in place. The entire area will be served by the newly created 350 foot pressure zone. This will require some additional 12" watermain to be installed as well as requiring some of the residents to install individual pressure reducers in their 3/4" service lines. Attached is EXHIBIT "F" which is a map showing portions to be deleted from the original contract. EXHIBIT "G" is a map showing additional 12" watermain required in the 350 foot pressure zone so that the 20" steel main can be abandoned in place. Ai,d finally, EXHIBIT "H" is a map showing where the proposed substitute 16" main can be installed. It shout , also be noted that the survey work for the proposed substitute main install ton has already been completed. Also some additional engineering costs 1 approximately $10,000 will be required to complete the construction plan, for the substitute portion. TO: Charles Shane, Chairman and Members of the Utilities Committee June 2, 1981 Page 2 of 4 Thus any rock excavation required would have to be negotiated with the contractor as an extra cost item. To determine the extent of the rock formation, soil borings were taken. Attached is ERYIBIT "A" which is a map showing the results, i.e. the estimated formation of the encountered . �ck formation. It should be noted that the 60" Seattle transmission line is apparently perched on top of the rock formation, thus making blasting of the rock formation impossible. Also it should be noted that the close proximity cf the 16" Oly almostost impossiblele. mpic Pipeline transmission line to Seattle vatermaln makes excavation with very large equipment CH2M Hill had been contacted to observe the test borings and to make recom- mendations. Attached i^. EXHIBIT "B" which is a CH2M Hill interoffice memo from Art O'Brien to Jim Butt dated April 15, 1981. memo were as follows; The conclusions from this If the test pit 1s not excavated or if the results of the test pit indicate that the sandstone cannot be ripped, the following options zre available: I. Plan on drilling and blasting from Sta 10+30 to Sta 15+50. This will be a difficult operation because of the other utilities in place. Blasting adjacent to the 16" gas will is very dangerous. 2. Reroute the 24" line to avoid this rock outcrop on the top of the hill. 3. Abandon this line and use the funds to construct or repair other lines. 4. Provide other hydraulic solutions so that the 24" invert can be maintained at a grade along the top of the rock (Pvmp station, siphon, etc.). From the above alternatives, it was determined that further investigation should be done to establish what costs might be involved with drilling and blasting (if such a procedure ts, infact, possible). CH2M Hill was asked to prepare an est.mate as to what costs would he involved. EXHIBIT "C" is a copy of this e3timate dated April 24, 1981. The contractor, Renton Construction, was then asked to prepare a proposal for the required rock excavation. EXHIBIT "D" Is a copy of this proposal dated May 18, 1981. Based on t:,e estimate, the proposal, and the other alternatives to using Talbot Road as a route for this secondary transmission line and low pressure service line, the extra cost involved could be an additional $100,000 to $150,000. Based on these costs and the accompanying risks involved in this particular blasting operation, plus the lack of additioual funding, It is recommended by the Utility Engineering Department that Phase 2 be abandoned at the present time and that further studies be made as to alternate methods or routes to supply additional water to the valley floor (see option 83 above). OF R4. h Z PUBLIC WORKS DEPARTMENT DESIGN/UTILITY ENGINEERING 0 235-2631 MUNICIPAL BUILDING 200 MILL AVE.SO. Rf NTON.WASH,98055 9p vTfo SE vtE� BARBARA Y. SHINPOCH Tune 2, 19el MAYOR TO: CHARLES SHANE, CHAIRMAN AND MEMBERS OF THE UTILITIES COMMITTEE FROM: RICHARD C. HOUGHTON ACTING PUBLIC WORKS DIRECTOR .i SUBJECT: TALBOT HILL PIPELINES CAC 019-81 A major problem has been encountered during the construction of this project. This project is comprised of two phases of construction: Phase 1 was the construction of 12" watermains in Talbot Road and around the Valley General Hospital area to complete the newly created 350 foot pressure zone to serve the area wir-h adequate water pressure. Phase 2 was the replacement of tae old 20" steel transmission main from South 177th Street to the Talbot Hill Reservoir. This transmission main has been used only as a service main since last year. At that time, the City dlsconnecred it from the Talbot Hill Reservoir so that the new connection to the reservoir could be installed in conjunction with the new transmission main in South 19th Street from the reservoir to Lind Avenue South. The old 20" steel main was laid shallow and water could travel in only one direction from Springbrook Springs to the reservoir. In its new design, water could have traveled in both directions thus serving as a secondary transmission line to the Valley Industrial area as well as lower pressure service main serving some of the lower elevation areas on the west side of Talbot Road. This new transmission line was to be Installed as a 24" watermain from the Talbot Reservoir approximately 500 feet South of South 23rd Street at an average depth of 22 feet, and as a 16" water main from 500 feet South of South 23rd Street to South 177th Street at an average depth of 4 feet. The problem was encountered in the area of the a4" watermain at a bury of 22 feet of cover. While construction Phase 1, a large formation of rock or an outcropping of rock was encountered. During the review process of the plans, no indication of this rock formation was transmitted by any of the reviewers nor had there been any previous indicationb that it might have existed. 'When the Talbot Hill Reservoir was constructed, soil borings were taken with no indication of a rork formation in the area. Last year when the new tie-in to the reservoir was s.ade and ..ne associated 24" main was installed at a bury of 22 feet of rove- in Talbot Road, no rock was encountered. Therefore, there being no indication that rock excavation may be required a "rock clause" was not included in the contract documents prepared by CH2M Hill. i City of Renton Page 2 *pril 24, 1981 513613.A9 The table below summarizes the costs to excavate for the portion of pipeline in the rock. The quantities were es- timated from the following assumptions: average depth of rock is 17 feet, side slopes of 4 vertical on 1 horizontal, and 400 lineal feet of rock excavation. COST SUMXARY Type of Cubic Yard Excavation Cost Per Per cost Per Total Cubic Yard Lineal Foot Lineal Foot ^_ Cost Glacial till, backhoe $2 to ;3 5 $10 to $15 $4,000 to $6,000 Rock, rippable with backhoe $4 to $9 5 $20 to $45 $8,000 to $18,000 Rock, jackhassaer and excavation o12 tc $30 5 $60 to $150 $24,000 to $60,000 The above costs represent our estimate of the actual cost to perform the work and are not necessarily comparable to con- tracted work and costs. Typically, contractors tend to un- balance bids, and the cost proposed for one item of work does not always reflect the true cost. A negotiated change order should be based on the difference between excavation in glacial ' ill versus the actual conditions encountered. The wide range of costs is due to the uncertainties in the prcduction rates. To reduce the ra'14e in cost, we re^ommend excavating two test pits at approximately stations 12+00 and 13+50 to determine the most feasible method of excavation and to quantify the production rates. Please call Jim Butt or us if you would lik-: to proceed with the test pits. Sincerely, Arthur J. O'Brien Geotechnical Engineer �` L /� r `, . Frank W. Pita, P.E., P.G. Geotechnical Department Manager kcn f� .'HILL EXHI&IT ~ » erpineers planners economists scientists April 2/, 1981 413613.A9 City of Renton a Public Works Department Municipal Building 200 Mill Avenue South Renton, Washington 98055 Attention: Mr. Ron Olson Gentlemen: This letter summarizes the alternatives and associated costa regarding the rock rxcavatio❑ fcr Schedule C of the Talbot Bill pipelines. Four alternatives were considered for the excavation: (1) drilling and blasting, (2; tunneling, (3) ripping with backhoe, and (4) backhoe- ounted jackhammer and excavation. Drilling and blasting we , 4� not considered because of the danger assoc ated with blasting adjacent to the existing gas main. Past experience indicates that tunneling is a very -nvtly alternative. The cost to mobilize a tunnel-boring machine to tunnel 500 feet makes this altecritive Prohibitive. The third alternative assumes that the rock can be ripped with the size of backhoe required to dig a 25••foot trench. Our experience indicates that equipment sucl: as a Caterpil- lar 535 or equivalent will be required for this type of trench. Typicrlly, excavation of glacial soils with the above- mentioned equipment gill cost $2 to $3 per cubic yard. W>'pp ng rock with a backhoe, the production rate decrea.:es and therefore will double or triple these costs, our esti- mate of the cost to rip and excavate the roof% is $4 to $9 per cubic yard. The fourth alternative assumes that the ro.•k is not rippable with a backhoe but can be broken up with a tackhoe-mounted pneumatic jackhammer. The broken material would be excavated with an additional backhoe such as the Caterpillar 535. This alternative is the costliest because two pieces of equip- ment are requi_ed and the production rate is further decreased. Our estimate of the coat to excavate the rock by thin method is approximately $12 to $30 ptr cubic yard. I"Id,os.. s� q" t Jim Butt Page 2 April 15, !981 513631.A9 24-inch water line. One of -ur geotechnical present during the excavatio. staff should be If the test pit is not excava. or if the results of • • test pit indicate that the sar: one cathe cannot be ripped,following options are available: the 1. Plan on drilling and This will be a blasting from sta 10+30 to sta 15.50. utiliti in pla difficult operation because of the other es ce. Blasting aC_acent to the 16-inch gas main is very dangerous. 2. Reroute the 24-inch line to avoid this rock outcrop on the top of the hill . 3. Abandon this lire and use the funds to construct or repair other lines. 4. Provide other hydraulic solutions so that the 24-inch invert can be maintained at a grade along the top of the rock (pump station, siphon, etc. ) . t • EXH15rT " 8" CH2MOHILL MEMORANDUM TO: Jim Butt FROM: Art O'Brien DATE: April 15, 1931 m SUBJECT: Talbot Road Pipelines s PROJECT: 513631.A9 I spent approximately 4 hours on the site inspecting the drilling operation. I arrived on the site after two holes lad b-en drilled and during the progress of the third. I inspected holes B-4, B-5, and B-6. A truck-mounted hollow stem auger was used to bore these holes. No samples other than grab samples from the auger were taken. Most of the information about material type and consistency came from the driller and his interpretation of how the rig responds. The contractor (Bruce) , city inspector (Bill CA14eTlY, and the drillinq crew were present during the drilling. The results of this investigation are shown on the attached figure. Conclusions follow: 1. The top of rock is fairly well defined by the six borings. 2. Prom discussions with the contractor, the tan sandstone encountered in the bottom of B-1 is not rippable with a backhoe. 3 The other holes indicate that the gray sandstone appears rippable, but it may become too hard to rip in some places. 4. All of the borings indicate the variability in consis- tency of the sandstone. Some areas may be rippable with a large backhoe and pneumatic point; other areas may not. To further assess the practicability of ripping the sand- stone, I rerommend excavating one or two test pits at approxi- mately Sta 12+00 and 13+50. The equipment used for the test pits must be the same as that intended for excavation of the 1`..m i T1i�r i�tD�e a-r w \` • ' W/ /!'wi//YG/ f rtrO /j'68 • K 6/D Itmft CL IU1N wh, S 3 L.PAE /� 5'A .3 D Y'•¢•.T S z s rAuOpr�o 4 y WygrAyT AS9 r .STAw�VZU !! e' VCF Y 17A I6 'O �c.A R ! K>7•T rMf I SA•f, C/TT W/{� r ro 6A'9> I'w w/ -/ :� /GfCEO /N Y..✓CE fI ••.w9- f nAT6l MLv:LII /:[NC'T4UCT,dJ Ot 'r'.y W /1'W +vO 4F[Na!"I N8T♦'ry /1fyC6LLffi, A Is G- f_+,/ A NOS CMJ.MJ) $TA /6•.ro R� I' . ff M •4' rlC MI.MJ/ /T• f CECh'iOLiLC AJ • -4'•• Off 1 f.m .dcu "7j r.ca /s•m /.Ko *Ao I i 1 i ,1 fif tlr)[ g[ wM mma f[►Mr N[ 4.0 •. rr ►1 Irw .q SC &CNEOULE A� •'w K ');iT/NN'I'IL �W ___ _W T-• MVT/•R. ar ..e. L6 C s[u rU[W a Waft s/< :•.fp .. 1 /.evT /sD.6r �65 J 'rA •1" 7 9-M N^J6 EXHIBIT :AD - W.50 viuxwTr,N !S• S A.�,f G TAllOT ROAD VtOELINE3 'f t uuo+Nu[ nn[w[s STA 3+20 TO 15+00 o•r..y CM[WlH A LNIIOUOM [I Cl• 7. �/ A�. TO: Charles Shane, Chairman and Members of the Utilities Committee June 2, 1981 Page 4 of 4 Revised June 5, 1981 The actual contract change for the above recommend.,tions would be as follows: Present Contract Amount $614.228.72 Change Order Al (Soil Borings) 1,710.11 Change Order A: (Rock Excavation) 2.363.59 Total Contract to Date $618.302.42 Leas Schedule "C" and "D" (273,766.02) Estimate of Additional 12" Main 18,000.00 ` Estimate of Additional 16" Main 184,000.00 Estimated Amount Altered Contract $546,536.40 It is important that we resolve this matter to provide the contractor with authorization to procead as soon as possible. We will be available to provide any additional information you may need in your review and approval of our recommendation. It is the recommendation of the Public Works Department that the report be approved by the Utility Committee and that the committee recommend approval by the City Council. RonalI L. Olsen Lead Engineering Specialist Richard . Hot ton Acting Public Works hector TZ :ckd .Attachments A - H cc: Mayor City Attorney _Y TO: Charles Shane, Chairman and Members o: the Utilities Committee June 2. 1981 Page 3 of 4 e It is recommend that Srhedules "C" (the 24" watermain) anc Schedule "D" (the 16" watermain) be deleted from contract CAG 019-81. The present contract amount of CAG 019-81 is $614,228.72. By deleting Schedules w "C" and "D", the contract amount would be reduced by $273.766.02 or approximately 45%. This much of a contract reduction would undoubtedly require some sort of a p.nalty payment by the City to the contractor. In lieu of this penalty payment to the contractor, it was determined that one other project very much in need and very similar in nature might be substituted. This project is the replacement of the 20" steel pain south of S.W. 43rd Street to Springbrook Springs Reservoir in Talbot Road South. This we$ a proposed project in the 1975 Bond Issue as veil as a primary project 1n the recently proposed bond issue. It has been determined by RH2 Engineering that this transmission line should be replaced with a 16" watermain at a depth of 4 feet which is identical to Schedule "D" of CAG 019-81. and a similar length. See attached letter, EXHIBIT "E", dated May 21, 1981. from RH2 Engineering. Renton Construction was asked if they would be willing to substitute this installation in lieu of a penalty payment. They agreed that they would be willing to install the 16" main South of S.W. 43rd Street at the same unit prices as in the existing contract for bid Schedule "D" for 16" watermain. It is therefore further recommended that the City authorize Renton Construction to install or replace thr .xisting 20" steel main with a 16" ductile iron watermain from approximately 400 feet South of S.W. 43rd Street to Springbrook Springs Reservoir. This would eliminate the last of the old leaky 20" steel main from our system. It is also recommended that the existing 20-inch steel watermain in Talbot Road South from the Talbot Hill Reservoir to South 177th Street be abandoned in place. The entire area will be served by the iewly created 350 foot pressure zone. This will. require some additional 12" watermain to be installed ss well as requiring some of the residents to install individual pressure reducers in their 3/4" service lines. Attached is EXHIBIT "P" whic;i is a map showing portions to be deleted from the original contract. EXHIBIT "G" is a map showing additional 12" watermain required in the 350 foot pressure zone so that the 20" steel main can be abandoned in place. And finally, EXHIBIT "H" is a map showing where the proposed substitute 16" main can be installed. It should also be noted that th• survey work for the proposed substibrte mair installation has already been completed. Also some additional engineering costs of approximately 510,0D0 will be required to complete the construction plans for the substitute portion. TO: Charles Shane, Chairman and Members of the Utilities Committee June 2, 1981 Page 2 of 4 Thus any rock excavation required would have to he negotiated with the c -tractor as an extra cost item. To determine the extent of the rock formation, soil borings were taken. Attached is EXHIBIT "A" which is a map showing the results, i.e. the estimated formation of the encountered rock formation. It should be noted that the 60" Seattle transmission line is apparently perched on top of the rock formation, thus making blasting of the rock formation impossible. Also it should be noted that the close proximity of the 16" Olympic Pipeline, transmission line to the Seattle 60" watermain makes excavation with very large equipment almost impossible. CH2M Hill had been contacted to observe the test borings and to make recom- mendations. Attached is EXHIBIT "B" which is a CH114 Hill interoffice memo from Art O'Brien to Jim. Butt dated April 15, 1981. The conclusions from this memo were as follows: If the test pit is not excavated or if the results of the test pit indicate that the sandstore cannot be ripped, the following options are available: 1. Plan on drilling and blasting from Sta 10+30 to Ste 15+50. :his will be a difficult operation because of the other utilities in place. Blasting adjacent to the 16" gas main is very dangerous. 2. Reroute the 24" line to avoid this rock outcrop on the top of the hill. 3. Abandon this line and use the funds to construct or repair other Ines. 4 ✓rovide other hydraulic solutions so that the 24" invert can be maintained at a grade along the top of the rock (pump station, siphon, etc.). From the above alternatives, it was determined that further investigation should be done to es' iblish what costs might be involved with drilling and blasting (if such a procedure is, infact, possible). CH2M Hill was asked to prepare an estimate as to what costs voula be involved. EXHIBIT "C" is a copy of this estimate dated April 24. 1981. The contractor, Renton Construction, was then asked o prepare a proposal for the required rock excavation. EXHIBIT "D" is a copy of this proposal datea May 18, 1981. Based on the estimate, the proposal, and the other alternatives to using Talbot Road as a route for this secondary transmission line and low pressure servics line, she extra cost involved could be an additional $100.000 to $150,000. Based on these costs and the accompanying risks involved in this particular blasting operation, plus the lack of additional fun&ng, it is recommended by the Utility Engineering Department that Phase 2 be abandoned at the present time and that further studies be made as t• alternate methods or routes to supply additional water to the valley floor (see option #3 above). 1 k /? -1 PUBLIC WORKS DEPARTMENT DESIGN/UTILITY ENGINEERING 9 a 200 M MUNICIPAL BUILDING 235-2631 0 t ILL AVE.SO. RENTON.WASH.oW.; 9�TFD SEVfE�. BARBARA Y. SHINPOCH MAYOR June 2, :981 ■ TO: CHARLES SHANE, CHAIRMAN AND MEMBERS OP THE UTILITIES COMMITTEE FROM: RICHARD C. HOUGHTON ACTIN(' PUBLIC WORKS DIRECTOR SUBJECT: TALBOT HILL PIPELINES CAC 019-81 A major problem has been encountered during the construction of this This project is comprised of two phases of construction: Phase 1 was the construction of project. Hospital area tolcompletewtermafns in Talbot Road and around the Valle the newly created 350 foot pressure coneyto serve General the area with adequate water pressure. Phase old 20" steel transmission 2 vas the replacement Talbot Hill Reservoir, main from South 1sed Street to the Talbot Hill This transmission rim ssion main has been used only as a service min since Last year. At that time, the City disconnected St from the Talbot Hill Reservoir so that the new connection to the reservoir could be Installed in con}unction with the new transmission main 1n South 19th Street from the reservoir to Lind Avenue South. The old 20" steel main wag laid shallow and water could travel in only one direction from Springbrook Springs to the reservoir. In its new defign, water could have traveled in both directions thus serving as a secondary transmission line to the Valley Industrial area as well as a lower pressure service main serving some of the lower elevation areas on the west side of Talbot Road, This new transmission Iine was to be installed as a 24" watermain from the Talbot Reservoir approximately 500 feet t an South Of vera gStreet tof fSouth 22 e177 and as a t are, average depth of 4 feet, 177th Str..et at an The problem was encountered In the area of the 24" wstermain at a bur) of 21 feet of cover. While construction Phase I, a large `ormation of rock or an outcropping of rock was encountered. During the rev8ew process of the Plans, no indication ..s this rock formation was tcansmitced by any of the reviewers nor had there been any previous indications that existed. When the Talbot Hill Reservoir was constructed, have might ht ha ha were taken with no indication of a rock formation in the area. nail 1t mi g Last year when the new tie-in to the reservoir was made and tee associated 24" main was installed at a bury of 22 feet of cover in Talbot Road, no rock was e:.roun[ered. Therefore, there being no indication that rock excavation may be required, a rock clause" was not included in the contract documents prepared by CH2M Hill. sT Lr � i s pF ll,c. AI T z PUBLIC WORKS DEPARTMENT DESIGN/UTILITY cNGINEERING 0 235-2631 O > MUNICIPAL BUILDING 200 MILL AVE. SO, RENTON,WASK 98M 9e r, C9 94>t.0 SECTE`�` BAREARA Y. SHINPOCH June 15, 1981 MAYOR • TO: MAYOR SHINPOCH FROM: DICK HOUGHTON SUBJECT: TALBOT HILL PIPELINE W-599 It is not a common practice to bore pipeline routes. Boring or drilling holes is an experelve procedure, approximately $350 per hole @ 20' c.epth. This price is based on time spent on boring until rock is encountered. (This price does not include geologist and rock samples) As you can see if ycu were to bore all routes every 50 feet, it would be expansive. Previous borings had been taken when the 5 mg. Talbot Hill Reservoir was con- structed with r.o rock being encountered. The recent tle-in to the Talbot Hill Reservoir on the west side and the associ- ated pipeline from the reservoir to Talbot Road and then north to South 19th St. was laid at the same proposed grade and no rock was encountered. Seattle Water Department reviewed the plans and no mer In of the rock outcropping was in their review. In short, there was no indication that rock might be encountered. Therefore, it was decided not to bore the pipeline route. It should also be noted that if rcck is not anticipated in the construction of Vie project, it in handled as an extra to the contract. If rock is anticipated in the construction of the project, there Is a rack item in the contract and the general excavation price is higher. Thus the City may pay a higher price even if rock is not encountered when bidding rock as an item. In either situation, any rock excavation required would have to be paid for. A contractor should not be expected to guess when bidding a contract whether rock will be encountered. I hope the above gives •,ou insight as to the "Whys" and "What Fors" on the rock problem. OF Reti J o THE CITY OF RENTON MUNICIPAL BUILDING 200 MILL AVE. SO. RENTON,WASH.90055 = $ BARBARA Y. SHINPOCH, MAYOR 00 ,. O4P ■ �rEO SEP1E 10 MEMORANDUM TO: Dick Houghton DATE: June 12, 1981 FROM: Mayor Shinpoch Dear Dick: Councilman Shane has suggested that the discovery of rock outcropping in the Talbot Hill project could have been anticipated if appropriate borings had been made. He presumes these tests weren't made ana alleges this is unprofessional and costly. Please provide me with ammunition in case he restates this on the Council floor Monday night. Barbara Shinpoch, Mayor iiYS:hh ■m fil ao6�•1 o��xa9� va Oni_c l 91 a, 1..IP 5 r ,.... C y ' \ 11�• 1 .. tl f tl r ts. war a I �� I 111--1 .��� T�.. •� r ♦ n a s I� s �� I '� t, I • jF 1 ; Y R� l • Yl • rr • •r �J I --••� t vAL EY GENERAL �HOS�'ITAL • '.f ' . �� �� • 1. ii 1 I S TALBOT HILL W-599 12 r.nNSTRIIfTMN CORRFSPONDENCF EXHjBrr " 8~ CHzM■HI!_L MEMORANDUM i TO: Jim Butt d FROM: Art O'Brien 4 • DATE: April 15, 1981 { SUBJECT: Talbot Road Pipelines PROJECT: S13631.A9 I spent approximately { hours on the site inspecting the drilling operation. I arrived on the site after two holes had been drilled and during the progress of the third. I inspected holes B-r, B-5, and B-6. A truck-mounted 1110110w stem auger was used to bore these holes. No samples other than -rab samples from the auger were taken. Most of the information about material type and consistency came from the dril,er and his interpretation of how the rig responds. The contractor (Br�ce) , cityins Af—" the drilling crew were present duringrthe 3drilling. and The results of this investigation are shown on the attached figure. Conclusions follow; 1. The top of rock is defined by the six borings. :airly well + 2. From discussions with the contractor, the tan sandstone encountered in the bottom Of B-1 is not rippable with a backhoe. 1, 3. The other holes indicate that the gray sandstone appears rippable, but it may become too hard to rip in some places. i 1. All of the borings indicate the variability in consis- tency of the sandstone. Some areas may be rippable with a large backhoe and pneumatic point; other areas may not. To further assess the -rac, tcability of ripping the sand- ' stone, I recommend excavating one or + , test pits at approxi- mately Sta 11+00 and 13-50. The equ nt used for the test pits must be the same as that inten<. .Or excavation of the TO: Charles Shane, Chairman and Members of the Utilities Committee June 2. 1981 Page 4 of 4 The actual contract change for the above recommendations would be as follows: Present Contract Amount $614.228.72 Change Order k1 (Soil Borings) 1,710.11 r� Change Order N2 (Rock Excavation) 2,363.59 Total Contract to Date $618.302.42 Lees Schedule "C" and "D" (273.766.02) Estimate of Additional 12" Main 18.000.00 Estimate of Additional 16" Main 184,000.00 Estimated Amount Altered Contract $546.536.40 It is important that we resolve this matter, to provide the contractor with authorization to proceed as soon as possible. We will be available to provide any additional information you may need in you, review and approval of our recommendation. Rona d L. Olsen Lead Engineering specialist ,f J &/.f� Richard C. Acting Public Works Director - :ckd cc: Mayor City Attorney TO: Charles Shane, Chairman and Members of the Utilities Coml..ittee June 2, 1981 Page 3 of 4 It is recommened that Schedules "C" (the 24" watermain) and Schedule "D" (the 16" watermain) be deleted from contract CAG 019-81. • The present contract amount of CAG 019-81 is $614,228.72 By deleting Schedules "C" and "D", the contract amount would be reduced by $273,766.02 or approximately • 45%. This much of a contract reduction would undoubtedly require some sort of a penalty payment by the City to the contractor. In lieu of this penalty payment to the contractor, it was determined that one other project very mud, in need and very similar in nature might be substituted. This project is the replacement of the 20" steel rain South of S.W. 43rd Street to Springbrook Springs Rese^voir in Talbot Road South. This was a proposed project in the 1975 Bond Issue as well as a primary project in the recently proposed bond issue. It has been determined by RH2 Engineering that this transmission line should be replaced with a 16" watermain at a depth of feet which is identical to Schedule D" of CAG 019-81, and a similar length EXHIBIT "E", dated May 21, 1981, from R112 Engineering. Renton Construction was asked if they would be willing to substitute this installation in lieu of a penalty payment. They agreed that they wooly be willing to install the 16" main South of S.W. 43rd Street at the same unit prices as in the existing contract for bid Schedule "D" for 16" watermain. It is therefore further recommended that the City authorize Renton Construction to install or replace the existing 20" steel main with a 16" ductile iron watermair. from approximately 400 feet South of S.W. 43rd Street to Springbrook Springs Reservoir. This would eliminate the last of the old leaky 20" steel main from our system. It is also recommended that the existing 20-inch steel watermain in Talbot Road South from the Talbot Hill Reservoir to South 177th Street be abandoned in place. The entire area will be served by the newly created 350 foot pressure zone. This will require some additional 12" watermain to be installed as well as requiring some of the residents to install individual pressure reducers in their 3/4" service lines. Attached is EXHIBIT which is a map showing portions to be deleted from the original contract. EXHIBIT "G" is a map showing additional 12" watermain required in the 350 foot pressure zone so that the 20" steel main can be abandoned In place. And finally, EXHIBIT "H" is a map showing where the proposed substitute 16" main can be installed. It should also be noted that the survey work for the proposed substitute min installation has already been completed. Also som additional engineering costs of approximately S10,000 will be required to complete the construction plans for the substitute portion. TO: Charles Shane, Chairman and Members of the Utilities Comsdttee .rune 2, 1981 Page 2 of 4 Thus any rock excavation required would have to be negotiated with the contractor as an extra cost item. To deterclnp the extent of the rock formation, soil borings were taken. Is To is EXHIBIT "A" which is a map sl ,wing the results, i.e. the estimated formation of the encounter, rock format n. It shou V be noted that the 60" Seattle transmission line is apparently perched on top of the rock formation, thus making blasting of the rock formation impossible. Also it should be noted that the clove proximity of the 16" Olympic Pipeline transmission line to the Seattle 60" watermain makes excavation with very large equipment almost impossible S CH2M Hill had been contacted to observe the test borings and to make recom- mendations. Attached is EXHIBIT "B" which is a CH2M Hill interoffice memo from Art O'Brien to Jim Burt dated April 15, 1981. The conclusions from this memo were as follows: If the test pit is not excavated or if the results of the test pit indicate that the sandstone cannot be ripped, the following options are available: 1. Plan on drilling and blasting from Sta 10+30 to Sta 15+50. This t will be a difficult operation because of the other utilities in M8 place. Blasting adjacent to the 16" gas main is very dangerous. 2.. Reroute the 24" line to avoid this rock outcrop on the top of the hill. 3. Abandon this line and use the funds to construct or repair other lines. 4. ProvlGe other hydraulic solutions so that the 24" invert car. be maintained at a grade along the top of the rock (pump station, siphon, etc.). From the above alternatives, it was determined that further Investigation should be done to establish what costs might be involved with drilling and blasting (if such a procedure is, infact, possible). CH214 Hill was asked to prepare an estimate as to what costs woulo be involved, EXHIBIT "C" is a copy of this estimate dated April 24, 1981. The contractor, Renton Construction, was then asked to prepare a proposal for the required rock excavation. EXHIBIT "D" is a copy of this proposal dated May 1.8, 1981. Based on the estimate, the proposal, and the other alternatives to using Talbot Road as a route for this secondary cransmission line and low pressure service line, the extra cost involved could be an additional $100,000 to $150,000. Based ou these costs and the accompanying risks involved in this . -articular blasting operation, plus the lack of additional funding, is 1s r,,mmended by the Utility Engineering Department that Phase 2 be abandoned at the present time and that further studies be made as to alternate methods or routes to supply additional water to the valley floor (see option Y3 above). OF R4 PUBLIC WORKS DEPARTMENT n _ DESIGN/UTILITY ENGINEERING 0 235-2631 0 �� ���� MUNICI►AL BUILDING M AMLL AV[.90. RENTON,WASH.� 9'149. rEp SEpTE e BARBARA Y. SHINPOCH June 2, 1981 MAYOR 1 f T0: CHARLES SHANE, CHAIRMAN AND �> MEMBERS OF THE UTILITIES COMMITTEE FROM: RICHARD C. HOUGHTON ACTING "UBLIC WORKS DIRECTOR a y.. SUBJECT: TALBOT HIiL PIPELINES CAG 019-81 p ,s?r A major problem has been encountered during the construction of this ro ect. 14 P This project is comprised of two phases of construction: Phase I was the construction of 12" watermains in Talbot Road and around the Valley General. Hospital area to complete the newly created 350 foot pressure zone to serve the area with adequate water pressure. Faase 2 was the replacement of the old 20" steel transmission main from South 177th Street to the Talbot Hill Reservoir. This transmission main has been used only as a service main since last year. At that time, the City disconnected it from the Talbot Hill Reservoir so that the new connection to the reservoir could be ins,-sled in conjunction with the new transmission main in South 19th Street from the reservoir to Lind Avenue South. The old 20" steel main was laid shallow and water could travel in only one direction from Springbrook Springs to the reservoir. In its new design, water could have traveled in both directions thus serving as a secondary transmission line to the Valley Industrial area h4 as well as a lower pressure service main serving some of the lower elevation areas on the west side of Talbot Road. This new transmission line was to be installed as a 24" watermaln from the Talbot Reservoir approximately 500 feet South of South 23rd Street at an average depth of 22 feet, and as a 16" water main from 500 feet South of South 23rd Street to South 177th Street at an average depth of 4 feet. The problem was encountered in the area of the 24" watermaln at a bury of 22 feet of cover. While construction Phase I, a large formation of rock or an outcropping of rock was encountered. During the review process of the plans, no indication of this rock formation was transmitted by any of the reviewers nor had there been any previous indications that it might have existed. When the Talbot Hill Reservoir was constructed, soil borings were taken with no indication of a rock formation in the area. Last year when the new tie-in to the reservoir was made and the associated 24" main was installed at a bury of 22 feet of cover in Talbot Road, no rock was encountered. Therefore, there being no indication that rock excavation may be required, a "rock clause" was not included in the contract documents prepared by CHZM Hill. � wtPy� dip ts4u 0 00 OGPJ®G i 1 • �� � Y4LfY GlufNt ' NOM.I�I O rf ----- - 77T lN6SRMK s K > 1 �I � J a o —\�ow � o anows /�■• � •?iL:1�71111�, i / p q I I uj �•• v 1r11f50N1 'w.• WU3N39 A3 ^ � I / ♦ S a � • - I Iw w .♦ ` • I •r 1 F _ I o T Y M � ♦• 1 f f r i I = � 111 Iillllliii I i tl 1 .. ,,8111111111_ .IIIII I � IIIINIIIIUIi�dilu u I �7a'a0iav00vi �00 a SIP�� a� eb° o° oC0 o��ap� City of Renton May 21, 1981 Page Two I A final consideration is that of system operation and how that affects hydraulic behavior in the system. Currently, the level is the Talbot Hill reservoir is reflected at the springs only when the reservoir is full. However, with today's demand level, the springs do not have sufficient capacity to refill the raservoir unless the wells in the downtown area are allowed to override the springs. Stated differently, the wells are hydrauli- cally closer to the Talbot Hill reservoir and can, therefore, effect the springs flow rate . The solution used today is that 3f selecting operational limits For the wells such that they do not dominate the springs supply rate to the system. These reasons have resulted in the conclusion that the existing 20-inch diameter transmission pipeline from S4 43rd Street to Springbrook Springs should be replaced with a 16-inch diameter pipeline. Please contact me if you desire further information regarding this recommendation. Sincerely, RH2 NCINEER INC„ P.s. , �'al Richard H. Harbert, P.E. RHH:lyd EXHIBITOPIUM E Z Engineering S1053.0 May 21, 1981 • • City of Renton Public Works Department 200 Mill Avenue South Renton, Washington 98055 ATTENTION: Mr. Ron Olsen SSBJECT: Springbrook Road Transmission Pipeline Replacement D!ar Ron: An examination of the size pipe necessary to replace the existing 20-inch diameter pipeline in Springbrook Road has been accomplished. Current and future operation cf the existing system have been considered, as well as conditions which existed during development of the original 20-inch diameter pipeline. The result was that the existing 20-inch diameter pipeline should be replaced with a 16-inch diameter ductile Iron •lpelioe. The remainder of this letter documents reasons for this result. The original sizing of the 20-inch diameter pipeline was based on demands which were substantially less than exist today. Consequently, soar of the 1,200 gallon per minute capacity from Springbrook Springs had to be trans- mitted to the Talbot Hill reservoir. Current demand levels are such that a good deal of the spring's capacity will be consumed in the system prior to going into the reservoir. A second major difference between design conditions for the original 20-inch pipeline and today'■ operation !a that the part of the City's water system in the industrial area was not developed until the last ten years. Tiday, the major north-south transmission is provided by the grid of pipes in the indus- trial area, which is the hydraulic equivalent of a 24-inch diameter pipeline from SW 19th Street to SW 43rd Street. This factor allows a smaller pipeline as a replacement for the 20-inch diameter pipeline from SW 43rd Street to Springbrook Springs. 300- 1Mh Avenue N E Surte 219 Bellevue Ws 99005 (208) 4514)585 RENTON EXH)Bff ~V CONSTRUCT/ON COMP,M 131q' City of Renton Public Works Denartmen: Desian/:.'tility Zngineerinc `'uniLipal Duildino Renton NA 98055 Attentions P.orald 1. Chen ■ '-�0rC3.LI. 'he following is our propoaal for rock a cavation for the Talbot ;:ill Pipeline Project '9-599, We have fiTired the excavating and backfill by t' , cubic yard plus a lump sum for cr)ssing Seattle's 60" water.. lin. ?he extent of rock is unknown but appears to be limited to Station 11+00 - Station 15+00, but there ray be more rock south o_` Station 15+00. The only difficulty with a cubic yard bid is we must insist on considerable latitude regarding width of the ditch. We found, when excavating for Schedule A, that the top 5 to 6 feet of the ditch was fractured rock that raveled when dug, creating an extremely wide ditch. .he rock below 6 feet was so hard we were unable to dig without the use of a backhoe- mounted 15.,:raulic rapid-ran hammer. We do not feel that the material is suitable for backfill, but if misted with 50' ;ranular material it could be use: to 3' of finish grade, ti.e. bank run ravel could be used for top 3'. 7his would require approximately 1600 cubic yards of imported ^:aerial for the 400 foot run. 7ue to expenses suc!: as n0v�s, insurance, shoring and the method used in biddirg, these costs are in additin:' to all bid items. It must. be understood teat this price is based on bein=• able to exca *ate without blastin?. If blasting is required, and if allowed in the area, there would be additional costs. It would be necessary to close the street to thru traffic for the duration cf the schedule. Estimated quantity of rock to be removed 2,00' cubic yards P 349.23 per yard a 98,460.00 Lump sum to cross Seattle's 60" Watermain 15.000.0nn 113— , Tax 6,126.84 �119,556.R4 10801 Rus07 Rnad South / Seattle WashinOton 98178 1 Phme, T72.20Rr, TO: Charles Shane, Chairman and Members of the Utilities Committee June 2, 1981 Page 3 of 4 It is recommend that Schedules "C" (the 24" watermain) and Schedule "P' ;. 16" watermain) be deleted from contract CAG 019-81. The present contract amount of CAG 019-81 is $614,228.72. By deleting Schadulu- "C" and "0", the contract amount would be reduced by $273,766.02 or approximatel,: 45%. This much of a contract reduction would undoubtedly require some sort o° a penalty payment by the City to the contractor. In lieu of this penalty payment to the contracto., it was determined that one other project very much in need and very similar in nature might be substituted. This project is the replacement of the 20" steel main South of S.W. 43rd Street ' to Springbrook Springs Reservoir in Talbot Road South. This was a proposed project in the 1975 Bond Issue as well as a primary project in the recently proposed bond issue. ! It has been determined by RH2 Engineering that this transmission line should be replaced with a 16" watermain at a depth of 4 feet which is identical tc Schedule "D" of CAG 019-81, and a similar length. See attached letter, EXHIBIT "E", dated May 21, 1981. from RH2 Engineering. e Renton Construction was asked if they would be willing to substitute thl= I installation in lieu of a penalty payment. They agreed that they would be a willing to install the 16" main South of S.W. 43rd Street at the same unit } prices as in the existing contract for bid Schedule "D" for 16" watermain. It is therefore fur the ' ,recommended that the City authorize Renton Construction: to install or replace the existing 20" steel main with a 16" ductile iron watermain from approximately 400 feet South of S.W. 43rd Street to Springbrool• Springs Reservoir. This would eliminate the last of the old leaky 20" steel main from our system. It is also recommended that the existing 20-inch steel watermain in Talbot Road South from the Talbot Hill Reservoir to South 177th Street be abandoned in place. The entire area will be served by the newly created 350 foot pressure zone. This will require some additional 12" watermain to be installed as well as requiring some of the residents to install individual pressure reducers in their 3/4" service lines. Attached is EXHIBIT "i" which is a map showing portions to be deleted from the original contract. EXHIBI. "G" is a map showing additional 12" watermain required in the 350 'Oct. pressure zone so that the 20" steel main can be abandoned in place. And finally, EXHIBIT "H" is a map showing where the proposed substitute 16" main can be installed. It should also be noted that the survey work for the proposed substitute main installation has already been completed. Also some additional engineering costs of approximately $10.000 will be required to complete the construction plans for the substitute portion. TO: Charles Shane, Chairman and MemJers of the Utilities Committee June 2, 1981 Page 2 of 4 Thus any rock excavation required would have to be negotiated with the contractor as an extra cost item. To determine the extent of the rock formation, soil borings were taken. ■ ■ Attached is EXHIBIT "A" which is a map showing the results, i.e. the estimated formation of the encountered rock formation. It si ,uld be noted that the 60" Seattle transmission line is apparently perched on top of tha rock formation, thus making blasting of the rock formation impossible. Also it should be noted that the close proximity of the 16" Olympic Pipeline transmission —ne to the Seattle 60" watermain makes excavation with very large equipment almost impossible. CH2M Hill had been contacted to observe the test borings and to make recom- mendations. Attached is EXHIBIT "B" which is a CH2M Hill interoffice memo from Art O'Brien. to Jim Butt dated April 15, 1981. The conclusions from this memo were as follows: If the test pit is not excavated or if the results of the test pit indicate that tl,e sandstone cannot be ripped, the following options are available: 1. Plan on drilling and blasting from Sta 10+30 to Sta 15+50, This will be a difficult operation because o' the other utilities in place. Blasting adjacent to the 16" ga:, main is very dangerous. 2. Reroute the 24" line to avoid this rock outcrop on the top of the hill. 3. Abandon this line and use the funds to construct or repair other lines. 4. Provide other hydraulic solutions so that the 24" invert can be maintained at a grade along the top of the rock (pump station, siphon, etc.). From the above alternative:. . it was determined that further investigation should be done to establish what costs might be involve' with drilling and blasting (if such a procedure is, infact, possible). CH2M Hill was asked to prepare an estimate as to what costs would be involved. EXHIBIT "C" is a copy of this estimate dated April 24, 1981. The contractor, Renton Construction, was then asked to prepare a 9roposal for the required rock excavation. EXHIBIT "D" Is a copy of this proposal dated May 18, 1981. Based on the estimate, the proposal, and the other alternatives to using Tal` ,t Road as a route for this secondary transmission line and low pressure service line, the extra cost involved could be an additional $100,000 to $150,000. Based on these costs and the accompanying risks involved in this particular blasting operation, plus the lack of additional funding, it is recommended by the Utility Eng Leering Department that Phase 2 be abandoned at the present time and that further studies be made as to alternate methods or routes to supply additional water to the valley flour (see option N3 above). OF RP Q �•y z PUBLIC WORKS DEPARTMENT _ DESIGN/UTILITY ENGINEERING 0 235-2631 O Lk MUNICIPAL BUILDING 200 MILL AVE.SD. RENTUM.WASH. 98055 970 so P N>ep SEs1E BARBARA Y. SHINPOCH June 2, 1081 MAYOR TO: CHARLES SHANE, CHAIRMAN AND HEMEERS OF THE UTILITTES COMMITTEE FROM: RICHARD C. HOUGHTON ACTING PUBLIC WORKS DIRECTOR SUBJECT: TALBOT HILL PIPELINES CAG 019-R1 A major problem has been encountered during the construction of this project. This project is comprised of two phases of construction: Phase 1 was the construction of 12" watermains in Talbot Road and aro,md the Valley General Hospital area to complete the newly created 350 foot pressure zone to serve the area with adequate water pressure. Phase 2 was the replacement of the old 20" steel transmission main from Socth 177th Street to the Talbot Hill Reservoir. This transmission main has been used only as a service main since last year. At that time, the City disco, ected 1t from the Talbot Hill Reservoir so that the new connection to the reservoir could be installed in conjunction with the new transmission main in South 19th Street from the reservoir to Lind Avenue South. The old 20" steel main was laid shallow and water could travel in only one direction from Springbrook Springs to the reservoir. In its new design, water could have traveled in both directions thus serving as a secondary transmission line to the Valley Industrial area as well as a lower pressure service main serving some of the lower elevation areas on the west side of Talbot Road. This new transmission line was to be installed as a 24" watermain from the Talbot Reservoir approximately 500 feet South of South 23rd Street at an average depth of 22 feet, and as a 16" water main from 50P feet South of South 23rd Street to South 177th Street at an average depth of 4 feet. The problem was encountered in the area of the 24" watermain at a bury of 22 feet of cover. While construction Phase 1, a large formatir_, of rock or an outcropping of rock was encountered. During the review process of the plans, no indication of this rock formation was transmitted by any of the reviewers nor had there been any previous Indications that it might have existed. When the Talbot Hill Reservoir was constructed, soil borings were taken with no indication of a rock formation in the area. Last year when the new tie-in to the reservoir was made and the associated 24" main was installed at a bury of 22 feet of cover in Talbot Road, no rock was encountered. Therefore, there being no in/Icatlon that rock excavation may be required, a "rock clause" was not included In the contract documents prepared by CH2M Rill. yW LAv/1 /o Jos /vnW 2t4- 5zo 1 , �t y. ErsM pw.LOCk A"O AMC. 3Z3_ 4G13 — GRs 4 S O O �^yea "a`oC" •:. .���.� •• -Qoees �■ �i ill ��' o� R�q � aA r Y� r i II �it , 1 � I I ♦ � t n� y j' I� ' I '/.' • f� `••� sit• • N• a r III f • I- � }�' •/ YINrM I •�f 1 ♦ • • , • N.M�I�� f• Ff'1 ) I .• .. f .f p n u N S lilt� , r I v I • T --_'J �� I �� I r i I _ I V I � I 1 I h N Id E>r GFNENq ho OSPI Ty rn Y ----------� I jA- A.1 I y r • I ' �Y < . .Iw w J J aI e w •• • q i • u .. . TTT!�s ..Y. . • ..ana.r:.e I A Y'• Y u a �i� w YIYI t w �• w � + _ r • Y 4 n �u Y • w, Y Y • N y T w«Y a y � f wax gave na tomsr►i � I ------------- a r t 1 j w y N Cityof Renton Key 21, 1981 Page Two A final consideration is that of system operation and how that affects hydraulic behavior in the system, Currently, the level in the Talbot Hill reservoir is reflected at the springs only when the reservoir is full. However, with today'a demand level, the springs do not have sufficient Is capacity to refill the reservoir unless the weals in the downtown area are allowed to override the springs. Stated differently, the wells are hydrauli- ca11y closer to the Talbot Hill reservoir and can, therefore, affect the springs flow rate. The solution used today is that of selecting operational limits for the wells such that they do not dominate the springs Supply rate to the system. These reasons have resulted in the conclusion that the existing 20-inch diameter transmission pipeline from SW 43rd Street to Springbrook Springs should be replaced with a 16-inch diameter pipeline. Please contact me if you desire further information regarding this recommendation. Sincerely, ,RRH2 ;IGIINEEERRIINNG,, PP.,s. Richard H. Harbert, P.E. RHH:lyd R U IT E 2 n9�neering S1053.0 May 21, 1981 ■ City of Renton Public Works Department 200 Mill Avenue South Renton, Washington 98055 ATTENTION: Mr. Ron Olsen SUBJECT: Springbrook Road Transmission Pipeline Replacement Dear Ron: An examination of the size pipe necessary to replace the existing 20-inch diameter pipeline in Springbrook Road has been accomplished. Current and future operation of the existing system have been considered, as well as conditions which existed during development of the original 20-inch diameter pipeline. The result was that the existing 20-inch diameter pipeline should be replaced with a 16-inch diameter ductile iron pipeline. The remainder of this letter documents reasons for this result. The original sizing of tC � 20-inch diameter pipeline was based on demands which were substantially less than exist today. Consequently, most of the 1 200 gallon per minute capacity from Springbrook Springs had to be trans- mitted to the Talbot Hill reservoir. Current demand levels are such that a good deal of the spring's capacity will be consumed in the system prior to going into the reservoir. A second major difference between design conditions for the original 20-inch pipeline and today's operation is that the part of the City's water system in the industrial area was not developed until the last ten years. Today, the major north-south transmission is provided by the grid of pipes in the indus- trial area, which is the hydraulic equivalent of a 24-inch diameter pipeline from SW 19th Street to SW 43rd Street. This factor allows a smaller pipeline as a replacement for the 10-inch diameter pipeline from SW 43rd Street to Sptingbrook Springs. 300- 1201h Avenue N.E. Sude 219 Bellevue. We 98005 (206)451-0585 RENTON EXHIBITV CONSTRUCT/ON CO r'92W--G - ay 18, 1891 City of Renton Public 'Yorks Department Desi "uric paliaity cnbineering Renton WA 98055n' ■ Attention& n0nald 1. Clsen ■ The followin is our proposal for rock excavation for the Talbot Hill Pipeline Froject We have fired the excavating and backfill by the cubic yard Plus a lump sum for crossing Seattle's 60" watermain. The extent of rock is unknown but appears to be limited to Station I1+00 - Station 15+00, but there may be more rock south o_` Station 15.00. The only difficulty with a cubic yard bid is we must insist on considerable latitude regarding width of the ditch. we tfound, when excavating for Schedule A, that the top 5 to 6 feet of the ditch was fractured rock that raveled when dug, creating an extremely wide ditch. The rock below 6 feet was so hard we were una'le to dig without the use of a backhoe- mounted h iraulic rap!!-ram hammer. We do not feel that tr:e material is suitable for backfill, but if mixed with 50 > r,,'ranular material it could be use! to 3 of finish grade, then Sank run gravel could be used for top 39. ,his would require approximately 1600 cubic yards of Imported material for the 400 foot run. Due to eznenses such as moves, insurance, shoring and the method used in bidding, these costs are in addit;or. to all bid items. It mus+ be understood that this price is based on bein,r able to excavate without blasting. If blastinz is required, and if allowed in the area, there would be additional costsi It would be necessary 10 close the street to thru traffc for the duration cf the schedule. Estimated quantity of rock to be removed 2,000 cubic yards a ;49.23 per yard � 98,460.0o Lump sum to cross Seattle's 60" 'r/atermain 1155..00���� 00 Tax 113,�i33 6 126.84 19. 10601 Rustic Road South / Sra+n. WMhlratnn 99178 / phone 777.7089; City of Renton Page 2 April 24, 1981 S13613.A9 The table below summarizes the costs to excavate for the portion of pipeline in the rock. The quantities were es- rock tis 17ed ofeete sideoslom th peabofm4tverticaaverage on I hdepth tal, of ■ and 400 lineal feet of rock excavation. COST SUMMARY Type of Cubic Yard Cost Per Per Cost Per Excevetion cubic Yard Lineal Foot Lineal Poot Total Cost Glacial till, backhoe $2 to $3 5 $IO to $15 $4,000 to $6,000 Rock, rippable with backhoe $4 to $9 5 $20 to $45 $8,000 to $18,000 Rock, Jackhammer and excavation $12 to $30 5 $60 to $150 $24,000 to $60,000 The above costs represent our estimate of the actual cost to perform the work and are not necessarily comparable to con- tracted work and costs. Typically, contractors tend to un- balance bids, and the cost proposed for one item of work does not always reflect the true cost. A negotiated :hange order should be based on the difference between excavation in glacial till versus the actual conditions encountered. The wide range of costs is due to the uncertaintiesroduction rat in the the rne in cost, we recommend excavating twoes.testTpitsdateapproximately stations 12+00 and 13+50 to determine the most feasible method of excavation and to quantify the production rates. Please call Jim Butt or us the test pits. if you would like to proceed with S inc e rely, p� �Y Arthur J. O'Brien Gee000tte�chniiccal Engineer Prank W. Pita,��,�P.,. Geotechnical Department Manager kcn SHILL EXH151T "(« engineers planners economists scientists s April 24, 1981 513613.A9 • City of Renton ■ Public Works Department Municipal Building 200 Mill Avenue South Renton, Washington 98055 Attention; Mr. Ron Olson Gentlemen: This letter summarizes the alternatives and associated costs regarding the rock excavation for Schedule C of the Talbot Hill pipelines. Four alternatives were considered for the excavation: (1) drilling and blasting, (2) tunneling, (3) ripping with backhoe, and (4) backhoe-mounted jackhammer and excavation. Drilling and blasting were not considered because of the danger associated with blasting adjacent to the existing gas main. Past experience indicates that tunneling is a very costly alternative. The cost to mobilize a tunnel-boring machine to tunnel 500 feet makes this alternative prohibitive. The third alternative assumes that the rock can be ripped with the size of backhoe required to dig a 25-foot trench. Our experience indicates that equipment such as a Caterpil- lar 535 or equivalent will be required .Dr t.iis type of trench. Typically, excavation of glacial soils with the above- mentioned equipment will cost $2 to 3 par -ubic yard. When ripping rock with a backhoe, the prcr3;:c-ion rate decreases and therefore will double or triple these costs. Our esti- mate of the cost to rip and excavate the rock is $4 to $9 per cubic yard. The fourth alternative assu.,rea that the rock is not rippable with a backhoe but can be broken up with a backhoe-n.ounted pneumatic jackhammer. The broken material would be excavated with an additional backhoe such as the Caterpillar 535. This alternative is the costliest because two pieces of equio- ment are required and the production rate is further decreased. Our estimate of the cost to excavate the rock by this method is approximately $12 to $30 per cubic yard. Brame osK. a , Jim Butt Page 2 April 15, 1981 513631.A9 24-inch water line. One of our geotechnical present during the excavation. staff should be If the test it • • p � is not excavated or if the results of the teat pit indicate that the sandstone cannot be ripped, the following options are available: 1. Plan on drilling and blasting from Sta 10+30 to Sta 15+50. This will be a difficult operation because cf the other utilities in place. Blasting adjacent to the 16-inch gas main is very dangerous. 2. Reroute the 24-inch line to avoid this rock outcrop on the top of the hill. 3. Abandon this line and use the funds to construct or repair other lines. 4. Provide other hydraulic solutions so that the 24-inch invert can be maintained at a grade along the top of the rock (pump station, siphon, etc. ) . r _: '� f7 r• yt •i. T 11 5 M4. RES 1 tr 7r N An so 49 �' a • — Z7 ♦ \ 1 k. l // � l I11 p N, - zn+LR ax a+D e+ se •e 1 . - 14 It.. K ♦ . M�29 52M+'Gs • I 10 ��lf ,.', .� e♦ M �[1(��T 2t' s tr ,u se`� ,w '... 1 16 1`J . .- 'a�., ♦� ' ;'P a+ �• .,� a► .♦ av 17 IN i6 IIts a' J , A r rod,{ }•t,,N,yin 27 Tt. _ II! i t% i - . I/`� !� w'�•P —^T"� ,�''� rz.+„A�e sv '-�`.'i ye34-1 _ . av l `. •, .. . �, .n `�_y s;Yl �` DTP Pt f• V• " •M"•^R4c',, tom, •t rn 3v As Zvrr+r*o+r' t46y48 ° � Ln • 1 t I Is f •, ; t + r t h 4i y' # g . _ I 'N Gil 1 . . ( � _..,..._ _.. i `L:F.q •o'rf � f'C'*""`,ry x�. Nf�M I \r xx }t x'I is Tst.;y._. 141 o m O G Z r .} - x Z 3 a s r Al I v Y' L O p M •,� � o - .e N . o m sa oN � ii ... +�..._ o2N v —1 (� in 7� - -- i i Z � 0104 ILI Ao Af -- / ; . z . e.. ......... rn M �T r • '.a' __............� ........... ...............,.,...... 'i ST t •r ' :...................i t � a , i ILI niv Gam`a� � } 0-0000pe0� I � P i t `s t z �- p 1 , � I � t L.----_---- PC J ui a ni3 A3 Ai ivY)N89 1 41 I ' cl IwK • IL.yr 1 I I S �V r i r O tw MI M • II ..\- •� `s` I' {^ Ii 1 'I N I a • �I 1 w Ya • . 1 �� •' w 1. t � � r r n Nw u �• Y I i I r c\t JP U-M-AlIfft.MMLAW TALBOT -ILL Q� 4 iTALBOT HILL PARK ` o'�� ��emc�oope • catr� d�P 4� vOQQ ` ESP c �I :op� �n�• ©�o_, ems,��li � °e°0 �• � .�zo� �� oam�Sao amen O rr • City of Renton May 21, 1981 Page Two A final consideration is that of system operation and how that affects hydraulic behavior in the system. Currently, the level in the Talbot Bill reservoir is reflected at the springs only when the reservoir is full. However, with today's demand level, the springs do not have sufficient capacity to refill the reservoir unless the wells in the downtown area are allowed to override the springs. Stated differently, the wells are hydrauli- cally closer to the Talbot Hill reservoir and can, therefore, affect the springs flow rate. The solution used today is that of selecting operational limits for the wells such that they do not dominate the springs supply rate to the system. These reasons have resulted in the conclusion that the existing 20-inch diameter transmission pipeline from SW 43rd Street to Springbrook Springs should be replaced with a 16-inch diameter pipeline. Please contact me if you desire further information regarding this recommendation. Sincerely, RH2 GINEERINC, P.S. 4; AVA - Richard H. Harbert, P.E. RHH:lyd E*15IT ftMineewinu S1053.0 m May 21, 1981 City of Renton Public Works Department 200 Mill Avenue South Renton, Washington 98055 ATTENTION: Mr. Ron Olsen SUBJECT: Springbrook Road Transmission. Pipeline Replacement Dear Ron: An examination of the size pipe necessary to replace the existing 20-inch diameter pipeline in Springbrook Road has been accomplished. Current and future operation if the existing system have been considered, as well as conditions which existed during development of the original 20-inch diameter Pipeline. The result was that the existing 2, -inch diameter pipeline should be replaced with a 16-inch diameter ductile iron pipeline. The remainder of this letter documents reasons for this result. The original sizing of the 20-inch diameter pipeline was based on demands which were substantially less than exist today. Consequently, most of the 1,200 gallon per minute capacity from Springbrook Springs had to he trans- mitted to the Talbot Hill reservoir. Current demand levels are such that a good deal of the spring's capacity will be consumed in the system prior to going into the reservoir. A second major difference between design conditions for the original 20-inch pipeline and today's operation is that the part of the City'$ water system in the industrial area was not developed until the laet ten years. Today, the major north-south transmission is provided by the grid of pipet in the indus- trial area, which is the hydraulic equivalent of a 24-inch diameter pipeline from SW l9th Street to SW 43rd Street. This factor allows a smaller pipeline as a replacement for the 20-inch diameter pipeline from SW 43rd Street to Springbrook Springs. 300- 123th Avenue N E Suite 219. Be6evue. we 98005 (206) 45t-0586 RENTON CONSTRUCT/ON ^ COoP�4NY�2�(; City of Renton Public Works ✓eoartmen: Desigr./^ti] ityy engineering "unicipal 3uilding Renton, WA 98055 Attentions Ronald L. C1zen ':1OFC3A1 The following is our proposal for rock excavation for the Talbot 11111 Pipeline Project "1-599s We have fi:vred the excavating and backfill by the cubic yard plus a lump sum for crossing Seattle's 60" watermain. The extent of rock is unknown but appears to be limited to Station 11+00 - Station 15+00, but there ray be more rock south of Station 15-00. The only difficulty with a cubic yard bid is we must insist on considerable latitude regarding width of the ditch. We found, when excavating for Schedule A, that the top 5 to 6 feet of the ditch was fractured rock that raveled when dug, creating an extremely wide ditch. The rock below 6 feet was so hard um were unacle to dig without the use of a backhoe- mounted h.draulle rapid-ram hammer. we do not feel that the material is suitable for backfill, but if mixed with 501 granular material it could be used to 3' of finish grade, then bank run gravel could be used for top 30. This vwuld rewire approximately 1600 cubic yards of imported material for the 400 foot run. Due to a nenses such as mouse, insurance, shoring and the method used in bidding, these costs are in addition to all bid items. It must be understood that this price is based on beini; able to excavate without blasting. If blasting is required, and if allowed in the area, there would be additional costs. It would be necessary to close the street to thru traffic for the duration of the schedule. Estimate•z quantity of rock to be removed 2,000 cubic yards ? 349.23 per yard v 98,460.00 Lump ev,n to cross Seattle's 60" Watermain ��HQp�0 01,1�1 11j Tax o 126.84 9. 10601 Rlt%t,^ Rnad Smoh 7 S!a•t'! Wa%NMInn OA17R ' Phnnp 77� 1114u City of Renton Page 2 April 24, 1981 S13613.A9 The table below summarizes the costs to excavate for the portion of pipeline in the rock. The quantities were es- timated from the following assumptions: average depth of rock is 17 feet, side slopes of 4 vertical on 1 horizontal , and 400 lineal feet of rock excavation. COST SUMMARY Cubic Yard Type of roar Per Per Cost Per Total Excavation Cubic Yard Lineal Foot Lineal Foot cost Glacial till, backhoe $2 to $3 5 $10 to $15 $4,000 to $6,000 Rock, rippable with backhoe $4 to $9 5 $20 to $45 $8,000 to $18,000 Rock, Jackhammer and excavation $12 to $30 5 $60 to $150 $24,000 to $60,000 The above costs represent our estimate of the actual cost to perform the work and are not necessarily comparable to Con- tracted work and costs. Typically, contractors tend to un- balance bids, and the cost proposed for one item of work does not always reflect the true cost. A negotiated change order should be based on the difference between excavation in glacial till versus the actual conditions encountered. The wide range of costs is due to the uncertainties in the production rates. To reduce the range in cost, we recommend excavating two test pits at approximately stations 12+00 and 13+50 to determine the most feasible method of excavation and to quantify the production rates. Please call Jim Butt or us if you would like to proceed with the test pits. Sincerely, 7"') Arthur J. O'Brien Geotechnical Engineer V / Prank W. Pita, P.E., P.G. Geotechnical Department Manager kcn RHIL EXHIBIT d1C» engineers planners economists scientists April 24, 1981 513613.A9 ■ 0 City of Renton Public Works Department Municipal Building 200 Mill Avenue South Renton, Washington 98055 Attention: Mr. Ron Olson Gentlemen: This letter summarizes the alternatives and associated costs regarding the rock excavation for Schedule C of the Talbot Bill pipelines. Pour alternatives were considered for the excavation: (1) drilling and blasting, (2) tunneling, (3) ripping with backhoe, and (4) backhoe-mounted jackhammer and excavation. Drilling and blasting were not considered because of the danger associated with blasting adjacent to the existing gas main. Past experience indicates that tunneling is a very costly alternative. The cost to mobilize a tunnel-boring machine to tunnel 500 feet makes this alternative prohibitive. The third alternative assumes that the rock can be ripped with the size of backhoe. required to dig a 25-foot trench. Our experience indicates that equipment such as a Caterpil- lar 535 or equivalent will be required for this type of trench. Typically, excavation of glacial soils with the above- mentioned equipment will cost $2 to $3 per cubic yard. When ripping rock with a backhoe, the production rate decreases and therefore will double or triple these costs. Our esti- mate of the cost to rip and excavate the rock is $4 to S9 per cubic yard. The fourth alternative assumes that the rock is not rippable with a backhoe but can be broken up with a backhoe-mounted pneumatic jackhammer. The broken material would be excavated with an additional backhoe such as the Caterpillar 535. This alternative is the costliest because two pieces of equip- ment arc: required and the production rate is further decreased. our estimate of the cost to excavate the rock by this method is approximately $12 to $30 per cubic yard. Stan&,o"k, • t Jim Butt Page 2 April 3.5, 1981 513631.A9 24-inch water line. One of our geotechnical staff should be present during the excavation. ■ ■ If the test pit is nat excavated or if the results of the test pit indicate that the sandstone cannot be ripped, the following options are available , 1. Plan on drilling and blasting from Sta 10+30 to Sta 15+50. This will be a difficult operation because of the other utilities in place. Blasting adjacent to the 16-inch gas main is very dangerous. 2. Reroute the 24-inch line to avoid this rock outcrop on the top of the hill. 3. Abandon this line and use the funds to construct or repair other lines. 4. Provide other hydraulic solutions so that the 24-inch invert can be maintai.ned at a grade along the top of the rock 1pump station, siphon, etc. ) . EXHIBrT " 8" CH-11"■HILI MEMORANDUM TO: Jim Butt FROM: Art O'Brien DATE: April 15, 1981 SUBJECT: Talbot Road Pipelines PROJECT: 513631.A9 I spent approximately 4 hours on the site inspecting the drilling operation. I arrived on the site after two holes had been drilled and during the progress of the third. I inspected holes B-4, B-5, and B-6. A truck-mounted hollow stem auger was used to bore these holes. No samples other than grab samples from the auger were taken. Most of the information about material type and consistency came from the driller and his interpretation of how the rig responds. The contractor (Bruce) , city inspector (Bill , and the drilling crew were present during th.: drilling. The results of this investigation are shown on the attached figure. Conclusions follow: 1. The top of rock is fairly well defined by the six borings. 2. From discussions with the contractor, the tan sandstone encountered in the bottom of B-1 is not rippable with a backhoe. 3. The other holes indicate that the gray sandstone appears rippable, but it may become too hard to rip in some places. 4. All of the borings indicate the variability in cors'.s- tency of the sandstone. Some areas may be rippable with a large backhoe and pneumatic point; other areas may not. To further assess the practicability of ripping the sand- stone, I recommend excavating one or two test pits at approxi- mately Sta 12+00 and 13+50. The equipment used for the test Pits must be the same as that intended for excavation of the .. Charles Shane, Chairman and Members of the Utilities Committee June 2, 1981. Page 4 ihv art.ua_ crange for the above recommendations would be as follows: Present Contract .lcount $614.228.72 Change Order 01 (Soil borings) 1,710.11 Change Order 02 (Rock Excavation) 2,363.59 Total Contract to Date $618,302.42 Lees Schedule "C" and "D" (273.766.02) Estimate of Additional 12" Main 18,000.00 Estimate of Additional 16" Main 184,000.00 Estimated Amoun', Altered Contract $546,536.40 It is important that we resolve this matter, to provide the contractor with authorization to proceed as soon as possible. We will be available to provide any additional information you may need in your review and approval of our recommendation. Ronald L. tllsen Lead Engineering Specialist Richard C. Rouq t Acting Public Works Director :ekd cc: Mayor City Attorney RENTON CONSTRUCTION COMPANY, INC. ialhot 11 Pic,91'ines Schedules A tnrouwh T "ontract ''o, cAG 019-!' Alternate to concrete thrust block G!, 7f-7 and 11>,42 - Schedule }i if ? - onventional block per City of Re:i'.or: water ,tandard ,retail is used doduct .yg00.00. Eliminate concrete thrust block - 3t 19+4c Sct+2�,iule c di-'duct "250.00 r 1 (i Nr..v4d i J ?i ryp t �f„PF 1P - ti f 70601 Rustic Road South 1 Seattle, iNashinyton 98178 / Phone: 772-2085 {r��•w� �anMw + �,�L�a�.;�"� ;�o�r��� �cic�.a +"�r �§W�S"ram`;�� s � ". 1" ti r i a cl : s u d 4 I i C v M-xu.V r ,. p n ap 1 tg i 95 5 J ky"�e I P ➢ n +� r' # '. vt �` P '�`. ti� Jtr 4'g��t� , r�� 4 .I '♦ 6 I - �i r'�� I i , � n ^ k` � - t aaL � �.�.5.^ J� tn�t'�,Il> JId'trl J ft{p 'I 1 Fir. Ron olson Page 2 N.arch 23, 1981 513631.N2 Joe and I look forward to meeting with Xou and Bill on Y.arcl, 23 to discuss the specific details of Bill s responsibilities a■ pipeline inspector. ■ w Sincerely, Jame L. Butt 1• r :arch 23, 1981 s13631.A2 Mr. Ron Olai/n City of Renton N.unlcipal Building 200 hill Avenue South Renton, Washington 98055 Dear Rent This letter cxpresse�. ur general understanding of our re- sponsibilities during the construction phase of the Talbot Bill (350 foot Zone) pump station and Basi- cally, ,. improvements. CA2M HILL willprovide "Servic n"Services During g Construction" as defined in our existing engineering agreement for both the 'Pump Station" and "Pipelines" projects, but will provide •Inspection" services for the •Puma Stations only. Y specifically t:r. Bill Rullberg, will provide inspection services for the pipelines. Our project manager for Services During Construction of both projects and inspector for the pure station will be Mr. Joe Miller Joe has 10 years of experience In the design and construction of water system facilities and has design and field experience on past City of Renton projects with which you are familiar. The budgets we propose are as followas SDC, Pump Station $15,C-0 SDC, Pipelines $10,000 Inspection, Pump Station $21,000 The above budgets are based on work performed during 1981, a 6-sonth construction tire for the pump station, and a 6-month construction time for the pipelines. Both Renton. Construction and TEEM Ventures have indicated they plan shorter construction periods. This would result in reduced engineering services costs. Our basis of compensation will be salary cost times a multiplier plus expenses, according to the conditions of our existing agreement dated Marct. 3, 1^80. V -s RENTON CONSTRUCTION COMPANY,JNC• ny 13, 1391 MITOnto- worts worts Le,: �e,.;1gn^tit ty �n _ . •er' ::_ureicipal Building Renton, WA 9007 Attention, Ronald 1. Cl."n ■ t The followin: is our proposal for rock excavation for the Talbot ..ill pipeline Project 1-399t We have figured the excavating and t,ackfill by the cubic yard plus a lump sum for crossing Seattle's 60 watermain. &SA'� fif , P ' The extent of rock is unknown but appears to be l.inited to Station 11+00 - Station 15+00, but there may be more rocFt}y�� i south of Station 15+00. *� he only difficulty with a cubic yard bid is we :rust insist on considerable latitude regarding width of the ditch. We r found, when excavating for Zchedule A, that the top 5 to 6 feet of the ditch was fractured rock that raveled when dug, creating an extremely wide ditch. :he rock. below 6 feet was so hard we were unable to die without the use of a backhoe mounted hydraulic rapid-ram hammer. * SHY, � We do not feel that the material is suitable for backfA 1, hu?a but if mixed with 50•% granular material it could be used to i' of fish trade, then bank run ravel could be used for r in top 3' . This would require approximately 1600 cubic ::ird; o. i imported material for the 400 foot run. Due to expenses such as mov^s, insurance, shoring a,.'l the method used in bidding, these costs are in addition to all bid items. It mist be understood that this price is based on bein;; able to excavate without blasting. If blasting is r:gaired, and if allowed in the area, there would be additio k: cost.. It would be necessary to c10se the street to thru traffic for the duration of the schedule. estimated quantity of rock to be removed e ov f 9b,lki0.00 2,000 cubic yards tW 3 Per card 00 + . Lump sum t0 cross Saattlr's 600 Vatermain 11�, Tax 10601 RiWic Road Smith / Seattle,Washinaton 98178 1 Phone: 772-2085 l City of Renton May 21, 1981 Page Two A final consideration is that of system operation and how that affects hydraulic behavior in the system. Currently, the level in the Talbot Hill reservoir is reflected at the springs only when the reservoir is full. However, with today's demand level, the springs do not have sufficient capacity to refill the reservoir unless the wells in the downtown area are allowed to override the springs. Stated differently, the wells are hydrauli- cally closer to the Talbot Hill reservoir and can, therefore, affect the • springs flow rate. The solution used today is that of selecting operational limits for the wells such that they do not domi.iate the springs supply rate to the system. These reasons have resulted in the conclusion that the existing 20-inch diameter transmission pipeline fr.am SW 43rd Street to Springbrook Springs should be replaced with a 16-inch diameter pipeline. Plcasn contact me if you desire further information regarding this recur rrion. Sincerely, RH2 NGINP.ERINC, P.S. Richard H. Harbert, P.E. RHH:lyd Engineering S1053.0 May 21, 1981 City of Renton Public Works Department 200 Kill Avenue South Renton, Washington 98055 ATTENTION: Mr. Ron Olsen SUBJECT: Springbrook Road Transmission Pipeline Replacement Dear Ron: An examination of the size pipe necessary to replace the existing 20-inch diameter pipeline in Springbrook Road has been accomplished. Current and future operation of the existing system have been considered, as well as conditions which existed during development of the original 20-inch diameter pipeline. The result was that the existing 20-inch diameter pipeline should be replaced with a 16-inch diameter ductile iron pipeline. The remainder of this letter documents reasons for this result. The original sizing of the 20-inch diameter pipeline was based un demands which were substantially less than exist today. Consequently, most of the 1,200 gallon per minute capacity from Springbrook Springs had to be trans- mitted to the Talbot Hill reservoir. Current demand levels are such that a good deal of the spring's capacity will be consumed in the system prior to going into the reservoir. A second major difference between design conditions for the original 20-inch pipeline and today's operation is that the part of the City's water system in the industrial area was not developed until the last ten years. Today, the major north-south transmission is provided by the grid of pipes in the indus- trial area, which is the hydraulic equivalent of a 24-inch diameter pipeline from SW 19th Street to SW 43rd Street. This factor allows a smaller pipeline as a replacement for the 20-inch diameter pipeline from SW 43rd Street to Soringbrook Springs. 300• 120th Avenue N.E. Suite 219. Bellevue. wa 98005 (206) 451-0585 n Mr. Ron Olson ° Page 2 May 13, 1981 S13631.A9 to the scope of services requested on specific tasks. The services will be provided as "UTMEx br KVICdS" ae dciijlud under the terms of our agreement. ■ ■ Inasmuch as this letter constitutes a change in and clarifies our responsibilities under the existing agreement, I am asking that you return a signed acknowledgment as an attach- ment to the agreement. Sincerely, James L. Hutt Acknowledged and agreed to by the City of Renton Director of Public Works Date: is CH2M ::HILL engineers planners economists scientists May 13, 1981 S13631.A9 111 ■ Mr. Ron Olson City of Renton Municipal Building 200 :Mill Avenue South Renton, Washington 98055 Dear Ron: Subject: Engineering Services - South Talbot Hill water Improvements Projects This letter is written to clarify, for the record, the level of our involvement in the construction phase of the Talbot Hill Pipelines Project, one of two projects in the South Talbot Hill area. The agreement between the City and CH2M HILL is written to provide for CH2M HILL's performing "services during construc- tion• (defined in Article l.C) and "on-site inspection services" (defined in Article 1.D) on the projects subject to prior specific authorization by t ,a City. Our letter dated March 23, 1981 (copy enclosed for reference), states that CH2M HILL will provide services during construc- tion for both the pump station and the pipelines but on-site inspection services for only the pump station. we would not be involved in any way in the inspection of the pipelines. Since early April, however, we have been acting under a verbal agreement that we will not provide either services during construction (S.D.C. ) or inspection services on the pipelines except as specifically requested on a task-by-task basis. We understand that the primary reason for the City (vs. CH2M HILL) to take on overall responsibility for S.D.C. and inspection is cost of our services. Under these circum- stances it is necessary, for the protection of both parties, that the degree of responsibility of each be defined. 9y taking the responsibility stated above, the City is responsible for the interpretations and implementation of the contract documents. Our responsibilities will be limited swx.Clow YA)114th Avenge 5 f 11+d1rw.• N',sp inlft+m'Nly1.1 21bN57` ++i �e Mr. Melvin L. Klewero, Jr. Page 2 October 9, 1981 Finally, you should be aware of. Section 35 of the General ■ Conditions of the Contract Documents. The Contract also has a duty to inspect the proposed project. The trout farm is immediately across the road from the entrance to Springbrook Springs and is readily visible. This should impart at least inquiry notice of the problem. Very truly yours, Lawrence J. Warren LJW:nd CC; Mayor Ron Olsen O F k,p� OFFICE OF THE CITY ATTORNEY • RENTON.WASHINGTON V �� � O rasr prrc[w,eta goo xw wcnu aunwnc • .enra+..ws..,wrp. s•oss xssaan Z � 0 •� b ��TFD SEPT � LAWRENCE I.October 9, I981 m a WARREN, crtv arro•r¢r PANIEL KELLOGG, •ssrc r�nr tnr nrp•rKr P SUSAN R IRWIN, •ssIar, r CITY.TT Y` � • ■ Curran, Kleweno, Johnson & Curran 213 Fourth Avenue South P. 0. Box 1126 Kent, Washington 98031 Attention: Mr. Melvin L. Kleweno, Jr. Re: 7,ilbot Road Project Dear Mr. Kleweno: This is in respinse to your letter of August 20, 1981, regarding Rentin Construction's work in the City's Springbrook Springs watersheJ. Your letter indica=ed that Mr, Bruce Gould, the Contractor, was unaware that any special care had to be taken concerning constructon methods as it might affect any downstream property owner. You should know that Mr. Gould met with the City's consultant, RH2 Engineering, at their offices on three occasions during the design to discuss the design and construction methods for: as exampled, 1) where to place the pipe, 2) how to make connections to the existing pipelines , 3) how to flush and sterilize the pipes, etc, The dates of these meetings were July 20, 1981, July 24, 1981 and July 28, 1981, all of which were prior to Mr. Gould starting construction on the work in Springbrook Springs , You further stated that any unusual precautions or steps will be an extra, which will be billed to the City. The unusual precautions or steps taken consisted of immedi tely restoring the a--Ea disturbed, which is generally accomplished after s satisfactory pressure and purity test are performed, There are some hay bales placed in the watershed to prevent siltation and also a jute retention net was placed on some areas. The hay bales and net do constitute unusual precautions and the City will consider a request for payment for the extra cost incurred, LAW orriec! Gvrran. K6eho,"nson 8 Carras J�xei •.euwwAx ale wv Avewue wuY.. eu[wwor[f CnARIC) Ic1[R CWN.N Itol *Whew( M(LVIM i.•l[W[NO Ja. w06Y O"aCE BO. iYw !T[LM[M L.JOMMaJM yy�� `r L I[Oal IY'iSil{ ,CI11(M([L.IVOND YVCl�.W�lawm gao5i JGIw(Y C.t WMl W.OAVi$1f August 20, 1981 City of Penton Utility Engineering Departmnt Renton City Hall 200 Mill Street Renton, WA 98055 Attention: Ron Olsen Re: Talbot Road Project Dear Mr. Olsen: we are correspording with you as attorneys for Renton Construction, Inc. As you know, Renton Construction is doing work on the above-referencec. project. Recently Renton Construction was doing work in the Springbrock Sprints water shed, Audi is owned by the City of Renton. As a result of the work which they were accomplishing, they received a oamplaint from Mr. Don Gallagher, who owns and operates Springbrook Trout Farm, whose operation apparently is dowc.3tream from a creek or overflow which runs from the City of Penton Springbrock Springs water shed. Mr. Bruce Could indicates that at the time Renton Construction went into the City of Renton property to do the work, they were unaware that any special care had to be taken conoerning construction methods as it might affect any downstream property owner. Mr. Gould indicates that he is in the process of meeting with officials from the City of Fenton to review the situation and, obviously, Renton Construction will take whatever steps are directed by the City to alleviate any problems to downstream owners with special problems. However, since this potential problem was not indicated or discussed at the: turn of the bidding process, any unusual precautions or steps whiff, must be taken at you.: direction by Fenton Construction and which add to the expense of the contract work will be an extra which will be billed to the City of Renton. Remo Construction, obviously, stands ready to do whatever is directed by the City of Renton in order to alleviate any problems with downstream owners, but they do feel that since this was not a part of the bidding process, any steps which cast extra money ,chic. are steps beyond ordinary construction methods should be compensated by the C: , ;:f Renton. Bruce and his company look for ..kd to continued cooperation with the City of Renton and a successful cc='l Luon of the job. Very truly wurs, Cw"R KUWENO, XIDOW4 CMWAN M�vin L. Klewenor Jr. MLK/la` .. , M rrt EXHIBIT "A" RESOLUTION NO. 2107 TRANSFER FROM EXISTING ACCOUNTS IN 1975 WATER A SEWER CONSTRUCTION PROJECTS AND FROM ENDING FUND BALANCE TO WATER SYSTEM IMPROVEMENTS/HOSPITAL PROJECT: TRANSFER FROM: 1975 WATER A SEWER CONSTRUCTION FUND EXPENDITURE ACCOUNTS: a/c 415/000/15.534.30.65.06 ------------- $ 50,000.00 (Telemetering Upgrade) a/c 415/000/15.534.30.65.09 ------------- 121 ,169.60 (S.W. 43rd/Talbot Reservoir) a/c 415/000/15.534.30.65.11 ------------- 34,280.70 w (24" Wells 1 A 2/2nd - Burnett) a/c 415/000/15.534.30.65.13 ------------ 13,136.66 (Talbot Hill Water System Improvmt.) a/c 415/000/15.534.30.65.14 ------------- 10,000.00 (24" 2nd A Burnett/Rolling Hills) a/c 415/000/15.534.30.65.17 ------------- 50,000.00 (Steel Main Replacement) a/c 415/000/15.534.30.65.16 ------------- 10,000.00 (West Hiil Reservoir A Study) a/c 415/000/15.534.30.65.19 ------------- 50,000.00 (Sanitary Sewer Rahabilitation) a/c 415/000/00.501 ,00.00.00 ------------- 183,239.00 (Ending Fund Balance) E521.825.% TRANSFER UNTO: 1975 WATER A SEWER CONSTRUCTION FUND: a/c 415/000/15-534.30.65.20 ----------------------------- E521i825_% (Water System Improvements/Hospital) J` V CITY OF REN1'ON, WASHINGTON RESOLUT7,0 NO. 2407 WHEREAS it is necessary r+nd .advisable to transfer the helov specified funds and such transfer being necessary and in the nublic interest and for the nul•1ic henefit, NOW THEREFORE THE CITY COUNCIL OF TEE CITY OF PENTON, WASHINGTON, DO RESOLVE AS FOLLOWS: SECTION I: The Director of Finance is hereby authorized and directed to make the folio-ing transfer: See Exhibit "A" attached hereto and made a part hereof as if fully sct forth herein. PASSED BY THE CITY COUNCIL this 15th day of June, 1981, e oree eaiT`I ity erl APPROVED BY THE MAYOR this ISth day of June, 1981. �v+►W .Ska I� Ear-Tara Y�Stiin-�nococh�. Mayor Approved as to form: 04. Lawrence T—T`9> Gity.lktorney FFxreE��1 .c ,ac.a eo T/at+'k ear AlGIQ ,B.I.o 6,,.ro.v . IrW OfY.'11MIb1 YP1 Yx1r MIO. 1T4 Y.II N1C. 'OlM YMI MIG MAL WII VNCi IOMt 41i1/�q_ 1pq 1 M. 1 ark AA::K. _ INt_ .M PIM AAeq PIPE _— __ a - - .._ - __. --_ -- -- -- — -- -• zias czAexl.Ezgtx;,q ;.E t CGICRCfE F4VFYl'M' .__ .�Q ✓! .._ _ __f- _4.' �' _ PAVOrI.r. SIOElA3YS i NY64 J.() _— _. ._ -- --- _ — �-- Eon ro s1t16'EIIIC enere.ara tox goomwumm txaxsrtas — lS 1AW -Exp1 Qk[.WyK c VALVE t-Excx unvuK ANG vuvE l'lx i TAdbE xuL P1PCL216A, ;rtOJ_d Id .gc+cr rlsu�1��A_�Hw��_— tawtt-cm a tmleoa, xAnEtV+'t: rLalruAr lo. IreE -- AQULGiION OF BIOS e:o.uw•uq s xtrw: .-_- warrwq-7NM@IE4PxP.Elm _ UY t PRICE ' • • v 9er Kl2 fg11Y ry4 e �pdi6oN — 'YJ•�—' uv,[a'. 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Llllvl IrtliL PIPa1SMBi werr�p IJ rnuww 'rtu. Btros0u11K A Irlblui t.__.._ nwn_ ctrr ar xorta_rwccurwnN cr MO wre_ 1®mart 18.. 1981 �prtr wilder-BJ I.AZ __.__. �nuiwx_�ubE$.a_ 3 r_._. TMWLATIM Of �105 L� ¢_J. 61WPr6 aeawrwx '(WN91ISrIa1 r10 UNIT"WE 1 t. t' 5 AIpTTO�f�M _ .I__ MtY�MA �! y.P!PIIICP 101M VMT tir:. IOILL 1Yf/IIfA 101Y W11lPJ M14 JMrt MCI fOTµ' - I'ZYGI-�..iJiL._YIIYi-116i'S8. CON All - _ __ .BLS &70 f6 ..F . [nt—/MT.iQYIelPJ v�EL 781Qk_. 7. Irb_. _— rmavmm WL- C===lATao¢ --- /tca. 3Y.__ .� .— 62.JQP _ S¢ 17f-�io _ JfPF43Yelfzxa -- - -or S3ysL. ` --1 r Pt-- f _ It- - - -- w—. irExceeve�Taxeier:: -_ ,¢e _ ter- _ -- �! [CMB A BYlyt'IM: PSPELIfIrb -_ �.. .t8'Y f/ygray 96a vx WNB tw TPNtSTfJB _ 41,90 — oSL 1'1I3S i YALVAma—. _— - j12 --- —_ � - _ iau.aaxzeuvc - -- assx ••eaw a FxYnmPa zorAoc ccwucrm. ermn eons zA9tGKW za vaanrtttsza. �AYf1l",•• vzw�.urs, w+�.r 111JIQ<P nna.,e.]IGJila A TWOLA P ureai -. JGOA wo wn—eawAnv xn._iv_ai .ww.cr 1w�!_8138ai•!sa —__ wuraw -- TAM LAnM Oi/ • __ I F J...w xW ll� :. _._. sa+,•tax AAH _ UMT MICA J 1 •a.yulsza_ s, arcuuE v:o.n.aa P!^a AL 'WIV {' IMN MIF FNiE 101M Nye IfE �OIM WF IW MfM MEf 101M uwr nm LF .. siC..r EEL.JP•IIiK.EiQfEll.Vera ._ 1 ,- �,,z,✓D_ � — --�ED _. -��a- __ ..... { ow. MT. FOE PAR. nsw gnrc EM;vlu. - 8¢O..Tax✓s `�. _y3 a O- ._-.-� -.CAW- --'Q'-. wWwomm— Ty— gavomw - — --- ---- Gy QQ�- r If a.a_o� - -- — -- - - - I k TM flu elPam, wcl,bn/Y rNCNcI.lu xvavttE A 4NCU01 l - avert crrr Q Imnal, 1pitllSBlM ` eCbm MPv 1�. 19N1 TONG WME S'fYll.'-1 fppip !mini, mKI iABU PrACE OF BIDS I no wrt _. _. TSSMII1bS2("'AID UNIT Pf.ICE „. ..xm...oP.—.____..__..._��._.—_ ... ✓r. ion sw v r-: w .IOR.R. rtr ws.rrroN urr uxr rRRa roru mIr INCI rmu ollr NMG r u rn rmu !rr rBel .o.0 .■ - SCKCPU!A C _ fA tsal[.stasu�&Rx[a____.— 1 _ZpdS.. _1Q,-- _!L•— - 16_ S — .rr _. _ zl-ucx sut 1uo riirng,_— .,.r-f .• •�+�'-G .._. CQ aIDw-.'4Q�En'lM.c r:m.crR _.At TMI rBuoc ana.BID)LIIO, IwIT.�La�f '.. BL1D>1M!>1R B TmuoW L v wi_cm a mn_rw wsx3N•+a_r_ r'—'� M011 L'1 i E .. P®BWNY 1B 1983 NBN1p sl�31 B] —_ «nrw Names• wsx3xcnv _.- TION OF N01 UNIT M W W+L_._._--.+- ^!+•`�� iwY+sMIS51JN/.tm UNIT ICE L_.J NO iAW4r P! �• ] Bl'LRIa VIYAMTUM .._ -�.—i._ L35 BVIi PSPELiIffS •P+1MN iMM 1N I l _ ITK NI. MK II/! I , IryC NY' IICA - 11M1 �.IIIC. tOfK I!2 1�0 Po.4 11wt IYR -- fil., w;I•nF W. 1.4-L _ w. ems. im gin oa@i.. t. rmrcn toec Edsaulu - iza -7tds "� � -1.N•�r'- ..�_ �'�� _lO.� ._.._. _ -. Aw wua=acnnsn isas:•ulas Ismcziaa------ _ SI t_ —"' . -_- -- - -sy. --- lk!4148" s . 'aLor biu,bnuim, npi_A KlS�{J_Oi—L3i�bA—A3_42_0Y-J--IE_M___I__ rOyffiayiA IOCMit»�ti fir b• 1916YI1101u TABULATION ONfI V BIMK wo M6MIssip, _ UNIT PRICE . .�.�. P [ 6u/A Ca rZf N Cmc6ELr0 ,oa0 4W " tvroa r n CerSfRue.hON Os A' iro seP+Pra+ _ _ - uPr wra mrr uPr PPp n»Ia YII.naw nPr rwr NlY. � urr -- -- UW i I 1pvs�5e . 3 34. MTm wpryls4 Y:O ___A.f, —4 1 rR. !IT. ICY VIM W E :u`M., a _ (� .. __ rr~ — M ••.•-�/ —� O dz dTLiLiYTlYI —� A& 7ZIO- .---.. •tQa _._�y� i twetcvasal _. _.__ j!— 77g666 a aancwu nBNM _—L/Aff imm 014. tJuavr xsu. . •roxR ma_ — 461POP, iE16P1N1011 PV W1f_l48M.'YIk llbr..l`X<1... _ MgYR NVM. S11. Y. S .11Z ___ .Of�nOI��.-_-----...�•� VIM MO rr.nsurav TRg4 __ 4WIRWM_T�fBYt_QI Am umff 11rV fYN rMP f� I } I e . t ___— nrrrau —_—_ 90- ___— a urBN BWI(.'( '�..sTiP>•E �__._____ —.�_,_ - i ` ��f — urr ux,tM[! mFY Yiit t!i WTY un lrrea _� f Nr4 Yyt Mr[1 tpry 3z3 r•,A 1r: xA n, r,w3 . i 10 rChi •I 3 �t i � ..>: ` i�- Ir PAvw T � � � I rtvA:r mre-w-re ; S<o y✓ y e - oco �,w,vcto+ MIMi _ �l0/p� A✓ i i.0on S __ 1 j.;70U >f �. OO v I',,, F iF :. r -riuG nFtvrCfi i L.4r sat ,�xvur.mwlicRt.Vt TlASAS11. � P I 6.` . . _• —' � - � _ _ i _ .L 3SQ_... SOc �,Tf7n zu t ! rcroiN3r+�s3m+iucs 2R. ✓.�oa .:too Pn� f /Y-o �y-Ixty ar! vuvT. . vuve acx ,i (,p Npp ..A or mxrsaem surau j _ - _ 1 I - rA3yvr..r. Iaasr.3wcs. wrw.-.nn3�amss a rmiwcs 3 cus ar Imrrw. ibws�a3 ...e.2,,.Ii lw dtt ISuyPi_�i,._1_59�___ rwoecT Mrr3lfi tl%4.i] IWAI. fiWilrL1CM _ TSI ATMII OF iNAt !o rnMAtq i. i. SaiYy___ ®!11lf10i rflYWSildl ilU UNIT ih110E L ! niv Yp rpw ra I �t I i EBEIreIrP - woElu _ /�.C. AU.i ¢o. fevv eec�ecro acwrNw min •C.i40 �LTJInT—r-�—`�—�__�f vwr vrr rlla'E Tru I�r lillH e/+'TiMLtflO✓ ce u• , Tory yI C'OT�-_nr� 1 fti - PuaN :�h-+x ILB oTAFFLI'J1T1pM1 ,':( Ty ds - t � I .AS!'W1Lr cu+cwrE vwTalPr. ✓ iT- j a0 .a.ryPAVLL s4wAC Inc _ aaD �✓ _ —. -_ _ `(I ' _ _ a 'k 3 v _ - _ RRTifNi;i r� FYISTIM. i I➢r 1'II;: y ___ xA ; � em.'li c cc.wE[Ty9tt.TPALL56As � - 6,J _— —^ - � _,YP�' 1 1 Pam• .:5:;`n-� t:.J o c „ �r Y•, - r �f'1'i£ 1'-JR4K1 va .x rt lz to l2 L JA _- iSQ �Ql2� i.3��i i r[' .. ,. •. a2 tlnp .,Svc, 3 OCC � r j ,S -- ca - - 1 •':i('+l]1BlD:]fA:. .J Pkl�f•. BSCOiA IOr:.L IA*ll^.":TD IN P � --�_�••Ua JP t�T9IDtL 9 rt'!d LropAaCf®. 9LI%1[A ib:.LL IMICA�t'x11PSLa. - aatlll'IRSLa. - ' TAYfrT B24 PIpq,Ilea• 1MOIR TIM_V'G®YIA A Sppp(•p I _ =�o nnrc.M8B_PII•Ai_ - aYBr QT!Q PlIOB gpyl +,It ai t a rJ ���-� rNEKI M!9 81%31.A] "�"'�--�--r—•w taGlTiol�rRtl� MYIHTgI (T�y� Mo rBETaATaw-'a. e aR+ue aEaB`rlyr lMaPdaaslCp AAO -- TABULATION Of BIDS Ytl!!L --" i S TAL8OT HILL N-599 13 CONSTRUCTION CORRESP' i IMF c , 1ellAw6.,e • Ot.CR G 1 � T.CC ; " J sir rflTC4 •! /Soo y r/ I �S ;�Y�NecE �PlJTueet�av .L a�oo �0.0 i i I �f y� i/.9[ ✓C GA/.1.`fd,!n s / 7/7 /7/7 1 �GI I � I TE'7/ Cfa✓ -ec i Fug- 1 OF RF OFFICE OF TIIE CITY ATTORNEY RENTON,WASHINGTON r� U its s} Z rom ar-cr so. as mo ft.,D fi • wrn,o «s.rwrry. ssoss ass.sus 0 LAWRENCE I WARREN, or+nroswe. DANIEL KELLOGG, ssas rwnr bry wtrowKr SUSAN R IRWIN, wtsnrwnr tnr wrTp l Ao.. sevTE V. July 10, 1981 Mr. Melvin L. Kleweno, Jr. Curran, Kleweno, Johnson & Curran Attorneys at Law P. 0. Box 1126 Kent, Washington 98031 Re: Renton Construction - Talbot Hill Pipeline Dear Mel: Your letter of June 23, 1981 has been referred to my office for response. I suppose the City wants an attorney to respond since the letter was from your law firm. As you probably well know, all cities are suffering a budgetary crunch, particularly since the Republican adminis- tration in Washington D.C. has cut back severely on funds available to the cities. Manpower is at a premium and must be allocated in the most efficient manner possible. The City does not have enough manpower available to allocate one full time inspector to this job. The City believe : that it has cooperated fully w`-th Renton Construction Company. However, maybe the problem is one of communication. if Renton Construction can indicate ahead of time when it is anticipated that an inspector will be needed, the City will use its best efforts to see Lhat that inspector is available. This does not guarantee that the inspector will be there but only that the City's best efforts will be used. The more warning that can be given to the City, the better able the City will be to respond. I think such a method of proceeding is anticipated by paragraph No. 25 of the contract specifications. If your client has any specific recommendations that it would make to facilitate cooperation between it and the City please feel free to direct further correspondence to the Utility Engineering Department. Very truly yours , Lawrence J. Warren LJW:nd CC: Richard Houghton Ron Olsen FUTURE GROUND LEVEL RESERVOIR SITE -� LL APPROX. 1,600 L F CI 52 WATERMAIN 9,bta p,JE.S r 't Er iz" i TAL60T RD. S. 4 I PROV I I PROP lz• t - - - - - ---- ---- - - G R L , INSTALL APPROX. 1,800 Lf 1 )J (TJ.) Cl 52 WATERMAIN Li )� )SED PUMP STATION SITE 3 EXHIBIT ~A" .Y, J w; NoN Project IC, INSTA of I " D.I. (TJ.) y ` ' E r k P1 TAL5O7 ROAD S. I � ; Project $ , INSTALL APPROX. 3,100 L.F i of 12" D.I. (T.J.) CL 52 WATERMAIN PIPOJ �_ "b' ...�*'*"�^"'"".S"a"••�.• ..,_...7 .7 77IIW�Ir [mow , Tf"b+aYi•Mn. � � • —————— Prop, Developer Extd 'W ensans Ex IZ W4tc )g1ms PH( ProP. Wateemo,n Extc*sionS d+ kny3 -�e �r � i.,r- 75h n-rv�I .ac S a gx k - i ' a 1 f yE Ron PROX . GASO l.f. of _ 16" U.I. J.) WATER MAIN i E EXHIBIT 1' 13 tun uw X Ln 1 J J m 16 'B�t TAl.80T IN5TALL AP CL. 51 I{{ FUTURE GROUND LEVEL RESER:OIR SITS Project 1 , INSTALL APPROX. 1,600 L.F of IZ" D.I. (TJ.) cl 52 WATERMAIN : w TALBOT ROAD s- F li.. ! _ 00000 ! I t f ! 1 �l +E t TALBOT RD. S. n n �{! ___ — .... I Peo - Project III , INSTALL APPROX. 3,100 Lf ! g I of 12" D-I. (T.J) Cl. S2 WATERMAIN i 1 — PROP i v 0 in a Project 1 . INSTALL APPROX. 1,800 L.F of Q, 1) I. (TJ) CI. 52 WATERMAIN Ji ——————— Prop Developer Extensions - ---- -�-- � Ez 12" Wgterm4in5 PKOr'�SED PUMP STATION SITE --� ----�� City Pro ;llatermo,H Extarsion5 EXHIBIT 'A' �. t TAL LL 5 M.G. 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TM "I"YIPELTM, i noa'-_t rn:s W'�1lLULLY 11 tNPOU'm I u�6wr '"ITY J XYLPg1, wiLtILR17� wr:r�.Ir�j- T"ULA Aw o.n EYJIptl�ld, 19iL._.._ waE<r Aw6we S1A41LdZ .ourwn rElmx„ wsxlF.-1wi ■Ml FO tW{ATM 6 J• 3}wMl Mp,IrTy..T1UN6N196IQ1.VD UAIIP PI11C( • IAv,ryr[rM�r Il6 1 -- - - OWE" fNe a . • ___. wxawTnw - _—_ _ +a urr rnrT rar rwa uarr ran Taro uYl.Mr4 Tutu Irr1y}E TpTµ - -- ..er ._tg.. _..— ,ghA PIPE N "�' wee xxxn;l. [aya ers- 3;° _Y•YG A' p'. -$ 9sR _. S- (.noo. •N J,t Y4` !q. STAEJLI9 T3M j •_ _•-i _.,._ —'.— M. — I �I N3N 'If E"0"-WTYGE fafi 1 — _ 3$alr _ 12 Z3D i�SQ wW? - say_ lvn�cnarc m exzrrxw LPPCI,TYe_ ..� -- Vie.,_ Q, �yLe_ 11"QQ__ xSo-p— Tao ,4 psvlc;:ePeIaYTEY TTwaraTe_.. LS -Lf LPG:_ Irl - _1.92_ L! 1 .7,R SO... 300 :e5170 qA zo t r'.N crTr,vuw ;vwvL Nrx -. _,Z EA y04 �00 _-y jp ,� .4tiQ— !'On 4100 y0v 'T3L(13 MILL VIVCLS A^ _ llruT d 'T� rwom:r 1 [ `A'IIFJL(PB 1PMliH I ClaaT.__C_IIY !T NLM_XAI. AJNIa'M_it r -_�L ri 11(M r! PEbPLAPY le. 1.)Y, ry:p1C1hWM 51 , S La(I1Tpy.jyIIy{. •�,.NLi.:'4a _ T ll IRT1E OF OM 1 t - - . wrAWurw A TEPRE -.. - ' IwxlRwTraN TfAl1`+Rla'+lrn AM URII TRICE e1'4lRMRT7IR'71P[ Ar.1 roan la ...r....e....-„-.: :.__:�..-+�.p....r.y..n:..::...:... .� ..-.�:...-...w+F.a.rr+•.�.t..-.:.:..�+e..t....-s-,n:a�:.-�,d.iv-:�,.:v�.._.:... .r__ - .._r- x•.r.1.:'.'_`T� _ � � _ i '�� / '/ / v � � //T7 ' / t•! / / I • ` . /t'` r ---1 waJec'—_..-- --- -'---- 4V---- ———— oarE— — — AML ::; - - VNOJEGT NO — _ .y 3, instances where trenching or cutting i- permitted, backfilling In shall be done in accordance with Section 7-04.3(3) of the State Standard the Specifications and the road aofirmuandcpresentablee shall be rsurface evenestored at ewithast ethele-sting existing pa require remedial action sucacent as pavement is not achieved, the overlays may redoing of the restoration or overlaying the backfilled trench and adjacent +reas of the roadway•" ram «eol urtt� A G t u. /)Q/L kJ ! � i � CQ++✓/r !n-at.�' 3�+-eGF .rey�o�- -cam'a.° �s ow+� a�.�¢a'.s�`' t s f.�N,t Xit.t o+& w4W o^+t// �- zl,, 9Y-_- _. UA 7[ u ' NO .-. lf.newl / `filc Woi/c5 �Ogf^t f'oiy Qi'd.Ilan Alan sae Ae.. A16 � � •��.- h�.�r.�..�-.� �- Tom- ,� o°�� Or 71u, oLt OW u ulw. 7114 Cow.,, , ,Q�E} 64t am- ac.✓.a( e+�. Tnsp�far zu. ,tA , Acx� awr of dilb scoia t AG �y,e�.r+.., l#i' h, cul�a , ll it4oF.I.tr./ �;, .ro►wy� UtJ /7z3 9� 4 �r g4if�q'' v1_ City of Renton Page 2 April 24, 1981 513613.A9 Tne table below summarizes the costs to excavate for the portion of pipeline in the rock. ^'Se quantities were es- timated from the following assume ,ns- average Cepth of rock is 17 feet, side slopes of 4 ✓ertical on 1 horizontal, and 400 lineal feet of rock excavation. COST SUMMARY Cubic Yard Type of Cost Pe- Per Cost Per Total Fxcavation Cubic Yard _Lineal. Foot Lineal Foot Cost •;facial till, backhoe $2 to $3 5 $1'l to $15 $4,000 to $6,000 Rock, rippable with backhoe $4 to $9 5 $20 to $45 $8,000 to $18,000 Rock, jackha�er and excavation $12 to $30 5 $60 to $150 $24,000 to $60,000 The above costs represent 03]r estimate of the actual :.ost to perform the work and are not necessarily comparable to con- tracted work and costs. Typically, contractors tend to un- balance bids, and the cost proposed for one item of work does not always reflect the true cost. A negotiated change order should be based on the difference between excavation in glacial till versus the actual conditions encountered. The wide range of costs is due to the uncertainties in the production rates. To reduce the range in cost, we recommend excavating two test pits at approximaCely stations 12+00 and 13+50 to determine the most feasitle method of excavation and to quantify the production rates. Please call Jim Butt or us if you would like to proceed with the test pits. Sincerely, r Arthur J. O'Brien Geoot�echniccal Engineer Frank W. Pita, P.E., P.G. Geotechnical Department Manager kcn i CH2M ' ::HILL I�n�;n,f•g•r� p{annf'r� ec.onoml>tc SCIPIIUSh April 24, 1991 513613.A9 City of Renton Public works Department Municipal Building 200 Mill Avenue South Renton, Washington 98055 Attention: Mr. Ron Olson Gentlemen; This lettr regardingetheuroc 1 ed kexcavation alternatives forScheduledCaofothet costs Talbot Hill pipelines. Four alternatives were considered for the excavation: (1) drilling and blasting, (2) tunneling, 13' ripping with backhoe, and (4! backhoe-mounted jackhammer and excavation. Drilling and blasting were not considered because of the danger associated with blasting adjacent to the existing gas main. Past experience indicates that tunneling; is a very costly alternative. The cost to mobilize a tunnel boring machine to tunnel 500 feet makes this alternative prohibitive. The third alternative assumes that the rock can be ripped with the size of backhoe required to dig a 25-foot trench. Our il- experience indicates that equipment such as a Catofptrench. lar 535 or equivalent will be required for this type Typically, excavation of glacial soils wiChctthhecabove-yard. When mentioned equipment will cost $2 to $3 per ripping rock with a backhoe, the production rate decreases and therefore sill double or triple these costs. Our esti- mate of the cost to rip and excavate the rock is $4 to $9 per cubic yard. The fourth alternative assumes that the rock is not rippable with a backhoe but can be broken up with a backhoe-mounted pneumatic jackhammer. The broken material would be excavated with an additional backhoe such as the caterpillar 535. This alternative is the costliest because two pieces of equip- ment are required and the production rate is further decreased. our estimate of the cost to excavate the rock by this method is approximately $12 to $30 per cubic yard. §* a osk. 4 VJ41 nan M'*nue 51 W'ILrvw•.1ti'.1�11ngn rn•MI�1f l'MN 451'dl 0 Memorandum August 26, 1981 Page Two The conclusion was made that the grader should be used to regrade an area approximately 50 to 60 yards long at the portion of the road nearest the entrance gate to the dam. There were also some extra hay bails stack piled near the chlorination building. i a i 4 � ...i.i r, 1 s 1 M E M O R A N D U M TO: Ron Olsen FROM: Rick Harbert s DATE: August 26, 1981. SUBJECT: 51070.1 , Springbrook Dam Ron Olsen and I tied arrived at the Springbrook Dam site at 12:15 p.m. to review progress bf Renton Construction. We also inspected to see if the surface restoration had been accomplished in accordance with our instructions of last week. It was apparent that no additional work had been performed around the :. £ z chlorination building and that the trench for the bypass pipeline around the snuth side of the chlorination building was still intact and had not c" �,'`•. been disturbed. r Upon looking at the weir that the City uses for flow measurement, it was apparent that the hay bails that had been placed there were still functioning _ tp well and that a small pool was created on the upstream side of the weir. Some sediments have been trapped, tnd there appears to be some surface sudsing that has occured. Upon observing the pond., Ron and I discussed the appearance that the hay bails were plugging with leaves and some other material. We decided that the hay bails should be replaced. There was also some encroachment with fill near the edge of the upstream pond, and it was decided there be some rock placed along that encroachment. Upstream of the chlorination building, we walked the allignment where the pipe was laid and the surface was restored, and it was quite apparent that the surface was well compx-.ted. There were hay bails placed along the north side of the access road up to the dam in the ditch line. Three hay bails appeared to be working well. We inspected the jute netting that had been placed to stabilize the bank in the four places where we asked for jute. The western most portion nearest the chlorination building needed some additional jute. Overall, the jute looked fine, and in our opinion, it would restrain silt from Washington off the bank. The middle section appeared to completely cover the area where silts could run off. The center section of the jute needed to have some additional jute placed on it as well, although the majority was covered. The lot,, nearest the dam entrance had covered the area where there was a potential for silts and erosion. There was a fourth section within 30 feet of the gate to enter the springs. y M E M O R A N D U M TO: Ron Olsen FROM: Rick Harbert DATE: August 13, 1981 SUBJECT: Siltation in Springbrook Springs Ron Olsen called at 3:45 p.m. to explain that there was some silt that entered Springbrook Creek up near the chlorination building and that this silt had flowed down the creek into the Springbrook trout farm. N^ fish were killed but the owner of the trout farm called the county and notified them that if any further silt comes down the creek, they would be subject to another law suit. Ron then indicated that the county representatives either Ray Kummer or Chris Loutsus, had contacted Ron to let him know that the situation was as I just described it. Ron asked that I go to the site immediately and assess the situation. I arrived at the Springbrook site at 4:35 that afternoon and observed that no contractor's crew was working, and I proceeded to review the construction work. I noticed that a good deal of earth had beem moved upstream of the chlorination station and ar- und the station. I had observed that a ditch had been left open and had taken pictures to indicate the ditch condition. A very small amount of water was flowing out of the 6" PVC bypass that was a temporary line placed to temporarily bypass the chlorination station building. The water flow rate was estimated to be a quarter of a gallon per minute, and this water was not terribly silt laden. In fact, the soil that it was flowing through appeared to be rather compacted clay. I then proceeded to walk the entire alignment and noticed that at no other point did they even came close to the creek with the construction material, either excess excavation or construction debris. As a footnote, there was some additional earthwork done at the correction to the dam outlet pipeline where they first started laying pipe just outside the existing fence and valve casing out of the springs. The work did not encroach upon the stream, and, in fact, the stream was actually flowing through what appears to be approximately a 48 or 60 inch diameter corrugated metal pipe. The corrugated metal pipe extends approximately 40 feet to 50 feet beyond where the nearest encroachment of the stream was. Before leaving, I again checked the stream and it was quite apparent that it was flowing cleanly. I could see no visible evidence of any siltation. x x `,kr ,;7� 7,:; s rt- ii � � t `. ".(q ���. p.r�F4.: ,.',R. � ,e J�� .. - � r ' � � cya�✓cC • ot�eR Y G � i — T i See t !� 3 / � JF�✓ic4 [i�if _y j fJ .�4tF�eE RE�r>T�ir�>v 1 , >I 1 Ole. — I i � I . i , i i A A i ,.� eee[ ' .= Go°C Mc.t LLclfFd �z Ysi hj r/ f i � •j'i f1e MJ9 e t i y/ S/oo TAENcr+ F�:wv s Ba crF.c� ,f� j ?,llo0 i r� 9oe '' �M/ntst., rarer:� * �j 36 ri..� FO A[.VOA)rid-i /7A7l.r iAt IL Y r � rt I YSoo /Y S.rA✓Et Rt`r r•w+' +�' r < 7 LGj /L 0= /vJ7Acl Girj eiPF ! J!!JOL 1 d ~� j% C •NNlL�' To �♦ JYfr!•'f r!J r S rA 7: /oeo ` 3o�a't Ad �• /680 /e 1 SEA•✓ic.S TwANIflA ?Ic 7 NYD RANT A+:l^^!:/A� /ODO 7e" 1 '/A I /J oo /70' - 13 / /d Ba trlq FL / ✓AL ✓4 . ?121 j� 7 /•/ R /d �f VOL✓f, t/r YS YeP L Poo /NLtAIt tisd F/ sr/.V6 i I!I */(. ) T!^7r Co.vy/�cfianiJ /. •• I`�/�Q .�.f/O 7t00 17 '/z CL lAsiNG JrA /?? 7S rD lAJ6y!-ir. f /11jan4 rX d/re/,S Lam- 1Soo 2040i•/AY S'7A7�..7•v.ord '4dryuw •.�� Ace&= ?&OD } RENTON CONSTRUCTION COMPANY, INC. REN1,00 w2528H Public lCo Des ign/L`til.ity i rinr; 6'unicinal ''.uilding 200 :'ill Avenue 3cutr, Renton, WA 9S055 Attentions Ronald I.. Olen Re, Talbot i!Ill Pipeline Pro jeer W-599 Det+r 1 r. Ols*n, The rollowinig is our nroposal to bore test P.c1e . to explore for rock, ^00.00 ty 1 1?obili-ation and Je-mobilization t 9. Fo holes per Peet 9 Bore a*;prcximstely 5 P Standby or set-up on site per hour 150.00 yYq. Supervision or consulation per hour .150.00 x " Estimated Total Cost ^2 ircerely, Vim °�. ;u 10601 Rustic Road South / Seattie,Washington 98179 / Phone: 77Z "s5 .001 104000 It tuo llt',w 13 tW 14100 1S40D i ?= I• I I � i 1 ? Gtu�++d Sw:�taa Tc,p e4 ¢ucl� 1 B•le B-1 A•i q-I {3•S lit C- i Its -- - - - -- i i I "Prur,l� aloe,a Talbot' 'lecl• � I � 10' JeC{ ri S% wwl pi I` q.i 0 au 3 - OuetharAltn -c a>16 no> augi< �1cw 3 i 0 ' 3' 4a 1�� lu.,, we..K,trstl Sua,J,kc�•� �t letb' vtsq F�t+hk t.,t��`wvMt. �•j j �' Q•], U�4o1 O11K�Wr�aaq � I i I Ir " I �3 0 s' OK<�f.r�a�, •� S'4v ;5' TU+� Stw�A s\VNt 10' k 1� 4roy i t '. .t Sts�'• +W+ n i I (t ♦ O10 �4' Ovtrlxtdan '1 I4 40 'ti Cathy Frroe\a `wud:lcaa � r ' a•s 010 9' Oqtt% b(Q!N ' b I1.S (sY4y frlUi�lc Spw,a�o,w 1. 5 1J iy Tu • :.,N�ekwl+t ,`. 1(,•4024' �s[bwt FY��b�a. SWA&'A 9- I=� 11• q•� Oro lO' Ov« laavdw w.►y ho a IVyt< C. I4 40 16 Hz MEMOF9 '^NDUM From: A3b To: Io.Ic[I IOA2� Date : 4l�slsl no: Projoat No. to CIQ,,, OVA drlllwvy OMU 66-s4u Sk. lc+-s . 'HALL will he G d,(a�cuI} optcuku� "q- io +t&e ,:, Q1a.�c . Bla+1� oc��ace.+n� k� �Me Ib � has ►�oa„ �t vtry dnq�rcrvs , -tlnQ- .4" 111tc 1-I~is roc. ook crop m rVt ciP hill Eo uw�+1+c uL� c c r `r o lr (tnA" IL�dYaulZ soL%L t cs i0. �lnoE (0v, lot NAat4uw ca OA a o LvN JAA-6 k)p C P4►NP 51-C lVto61 ) Stpkot t '.� IfHILI AA E M O IR••^N D U M wt From: rt3U To: BUN /1 IO�ncq Tr loran Date : no: Project No. Bo4�ow, cl Ts-1 �s r`� ��P(�r,bl� Wi�in a bOc41~oc "M� o1'lner ticks ��\usk #lnp� �"vtt C� ap(�eocs ,�.Pp;�bl� tau} Ik ,�c„1 fatw+M� toc, rlp I'V% scwls plans, q, Acll OC baYnngS L"AI c li 'KAIL VOYUL10%lh 1vt coanStS�t ,, CC {-Lte sotkJLt, q . Sc, t_ Qrec,S W�O� 4,4 r�Pp;bl� W4tn 0. 1pYg2 Botl�incc w,ntl P�neuwtiak� �So.u.� � C1'��'r � �-u.�t� QuetS -{1nc. �ro.ckcat��u a4' r.ppvn9 - .� So�n�sLowt Z rV.oVAVA4V Gl, xcanLL p. {tsk �x� esk aPprox�ww4e�.1 Sk. i2tUo Somme a� awl �v11tvjv� W r n Kcu�o k�•4, c ; +Me, of l' W aka (wt¢.. OA*, oQ our gtc e�llnea S1oSej: s1nc�� . 64.. yasw+ ck"nkky 4A%e txcc0660xti, V AA&e os V%4 uco.Obl-exA 0'r lF -4-Ui rtsu(k of +t&#- 4-es} i} MAUL AU +Erin V9 fie. %MA Sk++xIL coVtv►o4 ac ripped , ('Int roltow,� Op}w,,,s evice ava��abie.: 4 MEMORANDUM 11<HILL' ��+ o`3c,F:,,, To: SIIN Guff From: wrnu Dolts: io.ncq c:C. -rim projoaa No. S13431.kl% SIB ttn4 Z S��w,l up�ro��ww,�clr.� 4 Inwrs aU �v.sp« � dr�llw,c� ape<G�rty n� 2 o.rrw(d 0-" .kite s�1e o,C4cc {wo lnolab twd btEv,. d��tlKci aM� duv,vy �Ine prc�rEss o F 1dn� -}i�t,rd. � �v�sp�.ked "vies 6-4� B-S� crA=1 8�0 4 kruc.l� „NIeS 4wllcx,l s�ew� payee W&S dc�e �In�Se ktiltis. Nn sy�pl�s 01Az vc d'ttioti. Mtsk oC kiAc �v.Coruwlw�, v�sc�} mcGvtvkcal �y�t yin D ccY�s�SGt,tc�� kvw �'�� r • �f cs;�r� , , � ti�s �r,lctpsk,i�uH of `� YOM) -(he cc �tts��o� I et� t�.spf��� Cool Catb«y) j o„nra eve ar,ll,«.t� LCew 4 �ln�- dr illwy. -{Ine. ces�.tls o C .}ti.<< tttueck�nk�w. C►xe skrwu. pV. {tas. p�}+�lntL� FlyitQ. Ca,ncl►ts�u+•s C.Ctlbua �1ne. do Bcr�S Z, frown��So.ndsWue w GneLtw��e-'red ��vr{�` �c Tv - IOiOo 11 rV0 13 tCb 14t 00 I I � I I � II n � Top e,4 P.a� i A-L g-IIr 1 `PtoRAv- ala.. Tti\baE I�a1. �� I I• I od I��a �u' Jett Suwwe ty s - I � q-1 o+i;?' Qoc';h�rd�h -ctwld +nuk au.yt< t�(.1ew 3 �� gel V 193 r�lC�bYfTIH 3 i� 4�1 I'�' u.o We..11�ertcl Sw�1,1�'•.a Il �c 26 �(ay 1�tJl'�:A 1 'I I ' Tovi Sw�d�lu��t. 1q' Fi. 2r 6roy ♦•�., �. s�.Ati1o(,� (r 6 0 040 It' OvtrlwrAcw •1 I! 4v zl ' «,.) F�, c\c Sa,4:iutr �'' �'� r I . g s o 1u 9 Otn�aCat�a ' 9 b 11 5 lsY4Y FY141+Ic SvuA•1yt,. Iz s +o llo Tv ' Su n�+�O1 It, I q•� Oto 15' Cv4LYbtl(6u4. W^ huad I(>%w t 14 4o 16 I Jim Butt Page 2 April 15, 1981 513631.A9 24-inch water line. One of our geotechnical staff should be present during the excavation. If the test pit is not excavated or if the results of the test pit indicate that the sandstone cannot be ripped, the following options are available: 1. Plan on drilling and blasting from Sta 10+30 to Sta 15+50. This will be a difficult operation because of the other utilities in place. Blasting adjacent to the 16-inch gas main is very dangerous. 2. Reroute the 24-inch line zo avoid this rock outcrop on the top of the hill. 3. Abandon this line and use the funds to construct or repair other lines. 4. Provide other hydraulic solutions so that the 24-inch invert can be maintained at a grade along the top of the rock (pump station, siphon, etc.) • w CH-MOHILL MEMORANDUM TO: Jim Butt FROM: Art O'Brien DATE: April 15, 1981 SUBJECT: Talbot Road Pipelines PROJE^T: S13631.A9 I spent approximately 4 hours on the site inspecting the drilling operation. I arrived on the site after two holes had been drilled and durino the progress of the third. I inspected holes B-4, B-5, a : B-6. A truck-mounted hollow stem auger was used to bore these holes. No samples other than grab samples from the auger were taken. Most of the information about material type and consistency came from the driller and his interpretation of how the rig responds. The contractor (Bruce) , city inspector (Bill Qalbevv, and the drilling crew were present during the drilling. The results Of this investigation are shown on the attached figure. conclusions follow: 1. The top of rock is fairly well defined by the six borings. 2. From discussions with the contractor, the tan sandstone encountered in the bottom of B-1 is not rippable with a backhoe. 3. The other rippable, buteitlmaycate becomeatoohhardatosripsinn pears some places. 4 . Ail of the borings indicate the variability in consis- tency of the sandstone. Some areas may be rippable with a large backhoe and pneumatic point; other areas may not. To further assess the practicability of ripping the sand- stone, I recommend excavating one or two test pits at approxi- mately Sta 12+00 and 13+50. The equipment used for the test pits must be the same as that intended for excavation of the .■ �� FROM: (WO HILT . INt . /A],, Con//�/GJ0�7/ CATE Ae� � PHI)JECT NO. �/-•��i�/. A' Z ZOO M.•.a.tl.'/7✓G e� SUBJErT II j Ron — /-c htt , Z'dt fry eUtti S d`0- I- 77`Cvf G`i`SG r vG C /IT C M"ts-f W/'K. 'rN,S� + -L7r,�.I[Z�tI✓l u/, �CQ/�'a.\. .�/1 �!�]f•/.f """� i testers b % ' t T`f�e. ,Lta,�G•x ,G C'XeCLI,^zL(J�'CS,.`.r f%} t.c...;j/.+l'.;,7- ° ; k�R. a f j 0 L dAA,t-t��-r C� ✓'t� 4� , 7p �Cl, �•�„�2. 7�� Ohl ; C4 n,X.+.•�- u.+i'f P /C uLl6b4r� . // �.✓� �IA�LnV '"i,LO �- i 4..e..1s �� �7 ✓!•�r �t-u✓l-4� ` 4 I . I t I ^,1 �I , -, N II -r,l .rw u , Fl�1 ntA •HI„ti 4%1�n �.�-. ...---._ -..__.._...... ...-.. _ -_. . _ .._..._ ... ..>.. __ mar..�•.e-e ' Yi�a�y i (('!!-!! wuecT_ RenlirlTti_____ _ ___--1MLL •�"!+i-�/1'�i/ler_ DATE�s/da Lurr �Ots[-------- moncT Pw..3/O' 0L'-6r!--- I I ; SOtJTh 30, 50/ i CAR.R ROAD rj. gYLiEWALK I O.'9 ' I G✓R3��r i is g�-gyp 9owEK (a AS / ,� 3°7EtEPNoaE 12 -OvozM &W-iAL) PROPo O a" WATeK ROAD - SfiCT/D�l i GvRB � 5/[aEwALK "] u6. jI Ii /a"_ss.__ - . .Iq k-lv ._ i 'b T. 23N, R. 5 E-, W.M. I� 11 fatoo rr Ai toot L M� h f 5m ?4•>t OG(/L95�7�AK 1tot r�tl ••�a� �/N/SRO✓ECT . .... � ° =s .....,_. REC f'A.M. 30900 _.......... . p CcAwr if .�. �R I/•H 1!K t . l of ��i i .i ant ... .. i 1w;.►e ,M o •t dc EIf.W �s 7 o � CN N' �' 1p,,,sr t aS-� All �. ANd^J ir°" `� of Jl M t it l7t l! H f NE4NE , .,,•oval �� ",, .``\ C''' tom"'/ ,/j��•,+� 1 teM AONSItO by O�wt wn •�7/ Non IMOTAIRM s0'OOR MMOwO \ �,Met toga�oo.f7 r/b/r ww•cw • �J .._..-O WON... _. �� VNnr Snrr' wic✓ 1. LJ. Lt. �L WAl4K- AIPI TH t gj t o l 5 i fir. r TAB /,�Y~� � � lr �► Mj " f yF -_ _YI^ram!^' � _. -' .,� •.__ , I w ST�4�O J WX INSTALL APPROXn L_F O.t.(T1.) C1.52 WATERMAtN'�• ! `D4v,6p.• Esttwaens 1 — P S TIo�1 `TTE 12' Pn�p. Wate•<•+ Ear !i l t+ EXHIBT A . ' r 4 i :"pril 16, 1960 S13n31. 32 Xing County Rend rnaincer 900 Ring County Administration 3uilding Seattle, Washington 98104 Attention: Mr. Paul Hooper Gortlemon: Subiact, Pipeline Alignment Along Carr Road We have researched the location of existing utilities in the Carr Road right-of-way. The utilities are located as shown on the enclosed sketches. We propose to le-Cate the 12-inch water line beneath tLe sidewalk. Phis location avoids having to secure a nireline easement adjacent to the south right-of- way and laving to perform earthwork that would set back the existing embankment, necauso of the time and expense of obtaining easuments we are submitting this preliminary pipe- line layout early in the .'esign effort for your review. At a later date the normal permit and review procedures will be :ollowcd. We will proceed ;with this alignment, unless you feel it warrants further consideration. Sincerely, lkp :nclo�uroc 1 ray _ r H U L- PIPE L C/ , IA) 599 d (2w a (riZ? m 'L�2 �44 . 34'Z Ya6 ,p;r Power 1'5--.2 5' 9 0' CIA gl AV �. e 3 P`iill�yJ clfr ��afe�I G'�9: 23Srr'�f PA;JL- L tiM t3E<t 7XRFFIc. fyV6l. Z;S -26zc^ C/l.�.. /S A T L !, -5 Pe "r 3s ;24 41 ,Peer .Lya.1 C'sis�,oE SRC 2S5�s� /Y!l.CE cJU�HS �R7/ZC CLd9'TLi'7C e"�5.+'""'3.Z'f�, A I CH2M r OHILL engineers planners economists scientists March 5, 1981 S13631.A2 City of Renton Department of Public Works Municipal Building 200 Mill Avenue South Renton, Washington 98055 Attention: Mr. Ron olsen, Utilities Engineer Subject: Talbot Hill pipelines f The proposal for the recently bid Talbot Hill pipelines contains an incorrect description for the 12-inch gate valves. It reads 012-inch Gate V.11ve and Valve Box" when it should read •12-inch Gaze Valve and Valve Chamb byrthe analysis of the bids for the pipeline, it was apparent nature of the bid prices that some bid the cost of a valve box, h .- low construct others the valve chamber.i theTcost ofbadvalve Rbax�n Followingion Company, apparently award of the contract, this inconsistency needs to br. resolved. We recommend the successful bidder be notified in writing that a valve as ,pecificat onschamber ,andrnot ae valve dbox asmc lledwn in tforhe pin ls and is the proposal. Sincerely, Joseph R. Miller lc ti sealk aNk, ISIMI 11Nh Awnu S t 141k•uw hmgtrm`IBIMW I06,45 IAlMNI 21 �e n � k ✓ N r'1, - y I r a r e' 4. am�. PUBLIC WORKS DEPARTMENT DESIGN/UTILITY ENGINEERING A 235-25'a MUNICIPAL BUILDING 200 MILL AVE.SO. RENTON,WASH.9805S P ED SEP'( BARBARA Y. SHINPOCH MAYOR March 13, 1981 TO: Charles Sha : Chairman ' Utilities Committee Mevibers 7, FkOM: Richard C. Houghton Acting Public Works Director SUBJECT: W-599, Talbot Hills Pipeline F y; Attached herewith is the copy of bid evaluation prepared by CH2M " 7 Hill with regard to the aforementioned bid. Also attached is a s -' copy of the bid tabulation. It is the recommendation of the Public Works Department that the City waive the informality of tt- Inbalarced bid and av,ard the contract to tt:e low bidder, Renter, Construction Co., in accord- ance with Cn2M Hill 's recommendations. The contract award would be for all schedules. This would amount to $582,759 JD oius 5.4% sales tax in the amount of $31,469.02 for a total contract award of $614,228.72. There are sufficient funds for this project in the 1975 Water and Sewer Construction Fund. RLO:jt Attachment Iry� 1 'k rt n A1� f � y f a. UTILITIES CO*.:TTEI ktfORT i „@, March 16, 191;1 F SUBJECT: BIDS FOR THE TALBOT HILL PIPELINES, .,-599 (Refer,"ed M h 2, 1981 ) The bid opening for the referenced prn,j ('t was held February 18, 198). The low bid was submitted by Renton Construction Company and was in the amount of $532,759.70, plus sales tax. It is the recommendation of the Utilities Committee that the City Council concur iu the attached report of the Public Works Department and waive the informality of the unbaianced bid and award the contract to the law bidder, Renton Construction Co. , and that all schedules be awarded for a Lontract award of $582,759.70. plus 5.4',. sales tax in the amount of $31,469.02, for a total contract award of $614,228.72. :y It is also recommended that the Mayor and City Clerk be authorised , = to sign the contract. f a r Cnarles Snare, Chairman y� t �ai�!Clymer, VcF-Chairnion � � � � t i "' �4 OF R"' Q OFFICE OF THE CITY ATTORNEY* RENTON.WASHINGTON z ""'■�`" ros,O '.Cff W.62, 1W 216"ENV BIPLOIN • WN+on.Wny.N TG M 51 ]ss."n Z F p LAW RENCF I.WARREN, c...•++oe»e• DANIEL KELLOGG, ssis.•Nr prr•+rosw[r -P- SUSAN R. IRWIN, •ssis .., cnr•r+d , O,ggTFO SF000P March 1�,, 1981 TO: Ron Olson, Utilities Engineer FROM: Lawrence J. Warren, City Attorney Dear Ron: This letter is to confirm a conversation y .1d I had on the phone the other day with respect to the bid evaluation for Talbot Hill pipeline. Specifically, you were inquiring whether or not the bidding forms and the bid documents were acceptable as to legal form. It is recogni�,--d that Renton Construction Company has an unbalanced bid in that it has under bid the imported trench backfill material, foundation stabilization, asphalt concrete pavement, gravel surfacing and sod. These items result in the bid being informal but still legal. I would suggest that you accept the Renton Construction Company bid if all other things appear appropriate and suggest to Renton Construction that they accept a smaller percentage of payment pending these final items of work. To illustrate, with an underbid series of items like this the contractor may certify that 95% of the dollar value of the work has been completed when only 75% of the actual work has been completed. If the contractor would agree to accept a lesser percentage payment then the City would be adequately protected. In any case, we would have the standard performance bond. This would avoid the problem that would occur if the contractor failed to perform the last several items of work, having collected on prior percentage payments leaving a very small amount of money in the bid to perform reasonably substantial amounts of work. Another contractor could, of course, bid these individual items much higher. If I can provide you with any further ass lance in _IU4.3 matter, please contact me. "" // ( w�tence J e rren Gt 4 l LJW:nd CC: Mayor ass � r Of /Q. "� z THE CITY OF RENTON B0 MI MUNICIPAL BUILDING 2LL AVE.SO. RENTON,WASH. 98055 n $. BARBARA Y. SHiNPOCH, MAYGR • DELORES A. MEAD G9,� fib' CITY CLERK • (206) 235-2500 9,TED SE►TE�� Marct 17, 1981 Renton Construction Co. , Inc. wb01 Rustic Pd. So. Seattle, WA 98178 ATTN: Mr. Bruce L. Govld, President RE: Call for Bids - Talbot Hill Pipelines ;i Dear Mr. Gould: The Renton City Council , at Its regular meeting of March 16, 1981 , has accepted your low bid on the above-captioned project in the total amount of $614,228.72. Undated performance bond and insurance certificate will need to be provided to Project Engineer, Ron Olson, Public Works Dept. for preparation of the contract documents along with proof of state and city licenses. If you have any further questions, please contact this office. Yours very truly, CITY OF RENTON Delores A. Mead, C.M.C. City Clerk DAM/st CITY OF RENTON, WASHINGTON PLANS FOR THE CONSTRUCTIONS OF THE s,s�z.s: TALBOT HILL PIPELINES SCHEDULES A THROUGH I Pf fi W,TEM WL LlY4e NfLL ,KING COUNTY LIMITS R'WItFA "SFWEI, PARn NE iC"[ttlE DNLfB _..L — M1.31_ 25A751.92 il(AI,13L.4b LAI, ,e�wlrEA r«m[ meoT HILL - eGMDNLE v —' - - 5 u _ SCHOOL 'u •i "• ,! 1 �1: W4ICM fE' Y1tFA` bl'L[OJLI f �� Q4 i 1p53C7.r/Z IY W.TEM N` I�S�NF, FA110 OENERG SC"E W E E N06RIi � DYN`E ;A`IK 111 I IY.I!'W( f N ATEA 'S,f�r� BCHfI _ f -Ir WATER WE eFI SEt SR PSI Axau EP N' EABT VAILFI PJ,L - EWTN T1lB01 NX1' �@ ,OMEN, PUMO STA}pN � 16r DINEIIp - - H LOCATION MAP GENERAL NOTES r IINDVE A.1 W EIDER OF Cn111 WAEA NFCEMSERY IOA 1N.r Y1X1MVYCOVET AND..WUAW OJUNFNT CNIERM E� CONEIR ABANDON REST K ILTC[AND ILW ENDS 0I OESI AVID ALL WATER NIELNIEE SNAIL PAVE CO AAJR LEGEND ABBREVIATIONS •11 ATAR"1=1 BE IARUF,E N YI GO.10 WE 1.1 W.,EA STAN Int O.fall TO FN NYDAAMTE 0"1"MFILME a 4M 0[IALL AI INf 1.00E 1.,FAl.W4.1.Id WE evn.WNOW In RAOSI;[ FORK OMOMO FOR .1101.1 VFAUY ALL.➢UTTL04 IP 4:WYfA'I'lVNf!.;w,t.I[ w[SSUFt IEbIIOAxD E IIOI16 WO CYl EACA UIILrII\O NOTIfY UIi11INS Of IYO1N M 41110 W ALYDA'J.Fit WHIZ THE WCAIC.I..ALI PROPOSED IUIEUNF WIT"STATIONING AC ASINALTK CONCRETE TIN ANE?THEY WILL Of10 LOCI'(TWA FWEO IwLL RCL IRCESNK MET A,,It DONE M INE MWEfNCE O iT PROPOSED.FLAFNVDAANI RSSV ASSEMBLY GENERAL FMOVIREMENTS f 'EKA,A In•ELM EnMLILIU)M EMAIL WCUA'FROM —A{— PROPOFEO VALVE ISO ELOW OFF + MO AOMMINCf 4OW.......I RAW"tV I'S"OF... INCONIFIC LYKC 1 M rpG TIRE 16IF LAID TO EIOAE NOi LESe [ CINIIP l"lE [.1,,MG U t11 R CO.AECI OF INK AIF4MY,rgM n 1. 4L[plNCt10.tO FEMTINO WY[R INIUHE W41 ON tNAXtFOOT IN SW fEFI CMI COAAUGA'FG NfTCL IIPf LOYIiETLAtL 40G1„OMb O1 ESIS1Np IRg:f[s'.NOWAREA CONIL"tO 81 In GWN.R.ALL MCCEWRY GCAVAh A FAI L-� .'MOFIWIEAN6II EAYII[IHF L'OMIMAC,OMS FEYON4 ".,I RE AND A-AEC[ISERY MATERIALS DOI INDICATES CNNN66M6MDIEMrb CONC CONCRETE WLR1 TO VEAMF EAE TRW AND Co.""LOGYWN EO A,TO AlIt"'LYO v In CONTRACTION AND BIIhI If ON N, -'=6IS WATEN AND VALVE AND ORE HY04I COIL IN O COUPLING ...�,DMN.OI O.nE*wuAC[Sal OENERAI FIND,To IgOF1C111pN W MIKE THE COMAFR WY.. AP•F.O`.V'F.1'WRITER A"'P CGtV CUI.VERI R 1''.f!Af MENTS YL!ftl14L("IM�IIpI011 COFFffT•iMS ARI N:I SaLA L' r_r FpN E' i I .{r.r<• fl;I fMF P. L Nr. l G RE EN! A" .. ..�. ....... .. ...••�. a I i' L ♦u. ..•ir •nl tJx.Mft RM OW DliERM . ♦ .1•.a r:lr., , Mr. Ron Olson Page 2 March 19, 1981 513631.A2 We propose to provide these services under the other Services provision of our existing agreement dated March 3, 1980. you may authorize this work by returning a signed ^opy of this letter as provided below. Sincerely, James L. Butt Author' ed by the City of Renton By_ �_ Date (� 3, 1951 _ kcn k 3{ CH2M SHILL engineers planners economists scientists March 19, 1981 S13631.A2 Mr. Ron Olson City of Renton Municipal Building 200 Mill Avenue South Renton, Washington 98055 Dear Ron: I have estimated the activities and budget for preparing a brief report that will determine the allocation of construc- tion costs to the benefitted properties. The activities are briefly described as follows: 1, Prepare a reproducible ownership map of the 350-foot pressure zone showing the pipelines to be constructed. 2 . Meet with you to develop cost allocation proption erty to be in general terms, and specifically assessed, utilizing the above map. 3. Calculate area and front footage of each parcel to be assessed. 4 . Estimate final total project cost tfof eafootageline 5 9 ment and distribute, by area and , unit costs developed from tasks 2 and 3 above. 5. Write draft letter report, incorporate your comments, and prepare final report- 1 estimate that the cost for these services would range from $1,500 to $3,000 depending on thenumber of parcels and method- ology upon which we finally agree. emb oaks iS0011MI1 Me,wr 5 E ye�bvue.WaJt�nytm%500� IiM/I5150(p CH2M ::HILL engineen planners economists scientists April 9, 1981 513631.A2 Mr. Ron Olsen, Utilities Engineer Department of Public Works 200 Mill Avenue _.. Renton, Washington 98055 Dear Ronz Subject: Talbot Rill Pipelines The purpose of this letter is to inform you of various field observations I made during construction Of the 12-inch water line on April 3 and 6. Approximate time spent observing was one hour. First, the contractor was using material and had material at the job site which had not been previously .Approved by the engineer. This is contrary to the specifications. Second, the contractor had at the job site a fire hydrant that was Wilt in 197.5 and had obviously been in outside storage for some time. Use of such material is contrary to the specifications. Third, the contractor was not filling in underneath the pipe prior to backfilling. This is contrary to the specifications. Fourth, the contractor was not compacting the pipe zone, but backfilling it loose. This is contrary to the specifications. Fifth, the contractor was not compacting the trench zone. Only compaction of the top one foot was occurring. This is contrary to the specifications. Sixth, the contractor backfilled over a freshly pour ad concrete thrust block. This is contrary to the specifications. The contractor is not doing the work as specified, and I wool find it very difficult to justify approval and full payment for such materials and workmanship. Sincerely, Jos h R. pla feeble plke 15(q ONh Avrnur 5 f ft-d�ryyr,Wa+h�npur+'MNYM 2UG/AS{-NllM) NING" 7 X 7 DIAMOND 45i8"LIFTING INSERTS PLATE DOOR COVER NO"76561 WT.1,125 LBS. O LOCK 4 UNISTRUTS 24"LONG it EACH SIDE) O cr 42' 0 r/ VAULT NO.76M2- WT 3.230 L8& i i � f f 4'4' 7K?GRATE VENT �. 7X 3'GRATE VENT J� .-0^ d' . SOLID COVER Y X Y DIAMOND J �,� \KATE ODOR COVER NO.76658 "•.5.�. ..��.^.�!/ r.p� COVER NO.Jg518 �",-• 'NT. 1,128 L85. Ki WT,850 LBB. COVER NO.7600 CO, R NO.70" WT,I'm I" Wt 0 L8A OPTIONAL COVERS ft R. ti•ZfxR.L. �01► to RENTQN CONCRETE PRODUCTS,INC. VAULT- 4'-0" X 4'-0" X 5'-V' V-0 80X 917 (206) 255 1521 RENTON.WASHINGTON 98056 Pop 32.0 3 r-rrr umNO nwERTE / \ _2'X r OIAINONO run coon COVER LSS, 6t Sr. 1,100.83, HINGES T OLOGt � I 1 A ONISTRUTS 74`LONG •�� / 0EACH SIDE) �)-7rx� r.7.77r sa- I VAULT NO. 'f." NR.�BA6 L0.0 f � o r_v I ra- ,�` �-7 X J'GRATE VENT 4W rr � i A a- a- �! 's COVER N0. 76647 WT. 1,356 L8E. .7 / r COVER.NO r 6EBt W).ER 4 L.7 COVER NO. M56 COVER NO. 7FS54 Wf. 1,057 LB3. R? 1,9001Q5. ^� OPTIONAL COVERS �.,1 J 1 y 1pp{Z �'10 I � VAULT_ RENTQN CONCRETE 8•• X 4'-8"X 6'-8 PRODUCTS,INC._ ^c i 0.6ux 917 I?OB)IL�i LCi11 !',( RENTQN,WASH10:GTON 98J55 PAP 35.0 RENTON CONSTRUCT/ON COMPANY, INC. "elbot ?'.ill _ - -..nedules H thro..e,h one c 1 o. :'he bid !ten for 12" a-Ate valve and vclve bux _"or -11I. schedules was apparently in error. As you have indicated that you want t valva chamber rather than a cast iron valve box, we can furnish and install valve chambers for the following cost tag" dia valve ch-riber per city ;specification 1,717.00 Ahern, to 77 4'B• x 4'9" x 5'6"- Renton Concrete Products vault 1,494.o0 Alternate ,#2 400" x 4'0" x !'6"-Renton Concrete Products vault 1,42°.00 azh Pl.ts a credit of w42.00 for cast iron val•,e boxes bid. vd u Aw y F �N�b1 10601 Rustic, Road South i Seattle,Washington 98178 / Phone 772.2086 i I I Mr. Ron Olsen Page 2 ae ember 9, 1980 Sl i0l .A9 Lnelose_^ is a set of pipeline drawings showing revisions that wore made in order to divide the work into schedules. T'.,e iallowinq is list of cost estimates for each sche3•ule. aowever, the costs are based on the job oeing constructed as a whole by January 1931 anu not c,y scnn-,ales as now contomplata..: . �:_he�ula A 73,00: Szhe-Jule C ^'C S:hn_iula u 317,JOa Sche.lale L S,oUG scheiule r 17.,,,�sJ 1 £ Schedule .. 11. , a sohe.i u l� ^Q , ,1 , Szhed_le ;7.uC": t I will call to 3C:13...11-z A to :i� .., ,s . , - i eii 1 r Sinceraly, 3 tl� Joseph Z. -4iller is Enclosures I �• I II Affidavit of Publication STATE OF WASHINGTON (` COUNTY OF KING ze' `r CRy OF MENTON CALL FOR BIDS TALBOT tgll PIPELINES ...._ _.. .o11*Z�.. Q�....... ............. ... ... .being first dulysworn nn SCFIFDULESA TiW-IUDN I Sealed A we be rp aath•defames and says that.sbs, athe......G11.*1�...Clarki:. of r�tvW one, 290 p m.local THV DAD.YRFCORD CHRONICLE,a newspaper publiahedslx(6)time,.a Crew. or• the tgln day of week, fhal"tit newsp,perlssiegalnewapaper and it is now and hes been February, I MI, at ttw City for more than six months prior to the date of publication referred to. Cents oakA and " be printed end pcblished in the Ellish language continually as c newsparr "W'd and puuxiy,#w in published four(U times a week In Kent.Ring Count Washington,and I is the 9rd Floorromeratwr anw and during all of said time was printed in an okice msimulned at the Room, Ramon Munmipsl aforesaid lace of publication of said newspaper.That the Daily Record tfuadkq. 200 Md Avenue Chronicle Rasbeen approvedasalegnlwwspaper by order of the Superior So_1h Court of the County in which it is pabliskq tawR.King County, Ttie wook.• on psda,nW under Ina rgrMael chap Washington That the annexed la a.. Q!11 for Bids `�'�W and retasinp appr ......_........_ ..... .. . .,_. ..._._ ... .. .. icnI� «. M6351 224-sId � I'll Of ie-not wag, pipe 7,000 feat(A 12-+nrh wNer as.I was published in regular Issues ro s plat 4°� I' four & a _... _. . .. ..... .. .._. . . . n,t•• sower One together t In supplement corm of said newspaper)once each Issue for a Perot t x; won'Moves, r,,,ta. a as- s$ Toe po' aua ears o,' .l The proglcl w t'nsW. nt„ of........ ....3........................... .. consecutive issues,commencing on the Sdwaa A Mra:yh I ea rrr✓e halt' tlabval v- ter .3Q.......dayof.. ....andendingthe ^WWad Documents Thecayroe tCertgtr: in ntfaq any a II M" ...1).dayof ......FebViUM.7..... 81..,bothdates and to weer any ad/aM in -clusive,and that such newspaper was regularly distributed to its sub IMormalse, writerswritersduring all of said period. That the foil amount of the fee Approved piano and s0edsOeoorhe and turrn 9I coming domwwa mq be charged for the (seagoing publication is the sum of g53r.2 which obMkwlMftPtdft VV*ft has been paid in full at therateof per fohoof one hundred words for the flmpsm.MolsepMpsRa- first asserted,and per folio of one h•m lred words for each subsequent nn MaYgpve aI/Mp fur a inaenlon. dep.Mg M$14.00 Soil ON ,t f Own 82.00 al"Idr powags, .� . .... nmaWd.ThSdepoMwsbe unundedepWtnYm of the Pkva arty spadkomowm in MiStClark............. ....... good o0ndkon — he tholy days after bid opal*v 'Ra rngkVO OW" VA# not be Subscribed and sworn wbefore methis _. . ......13.. _...... dayof refundod' . A oerWled Chock in but band In the amours of am(St F0brAurF 1981, Pemem of Its taw a m,ag of such bid must accompany each Otd rho CVS Fair Practice, Notary Puhbc m and far the tale of Washington, and Non-D scnmi nation residing at Kent,King County Polices"A"I "burn DOW"A.Mod City Clark —Passed by the to isiafnet,19.55.k now n as Sena to Silt 291,effective June 10 C0ihsJb tl`a uaryM 30. 91h. 1955. g Feb pry 6 M January lost Fehmgpy d and fj, fe,1 —Western Union Telegraph Corules for counting words andfigures, R6361 cdopi<d b tit y the newspapers of the Stute. V.P C.Passed aft, t•ra .sk�la t we w n� yri Dai s- 336 9UriNETT RENTON,WA 98055 PHONE 872.6660 ;J There is a t per cent interest per month charged On past due accounts. Date _ Description Charges .4 Credits tL —Balance Balance Fo•wa•d K� 1 W'C Ra++wd some Mo�611�» Affidavit of Publication CRY )I Renton Talbot Hill ►ipe:inas schedules AThroughl STATE OF WASHINGTON Out"of dill oWins, FM.le y—, aMt en„s"----- KING COUNTY— ;S. sealed hia.ill he ra<elyA ae- ta i:4,w m, leeal tlae oh W lith as of i ebra•y.ItI hat ue City krY. oHW tad Ill ea opened and rabatir read It, tell The undersigned, on oath states that he is an s•t'Macy Calfenaes faada.a•a- ton M wi:..I anllamr. aM y+n luthorized representative of The Daily Journal of Commerce. T "•a"atb• .rorm•4 .n- I daily newspaper, which newspaper is a legal newspaper he > ^•t I- lr M n•r mI.000trw. . "i '°`t"°•` If 360 eneral circulation and it is now and has been for more Pu-nl.hlor�n0 feet I i� Pi .,,1, ..1.. .e, .eat o hen six months prior to the date of publication hereinafter 10-!nc6 waUr DI«•r.Ha f« ?feted tit. published in the Er.elish language continuously t{-f•cb v,ter PIP. tied 1,114s a daily newspaper in Seattle, King County, Washington, feet or $•tech e..ar plea te- �� retb•r with -aIr«. nttinse, nd it is nftw and during all of said time was printed in an .ad aelddl•ted` •DADI„aa ia`q ffSce- maintained at the aforesaid lace of publication of •ITe 9ratA la P fully do A tbroarh L •a met• us newspaper. The Dail Journal of Commerce was on the fully rich." In the Coa<r«tY rwta >th day of June, 1941, approved as a legal newspaper by Tea fpty n«rree the rlrot to roYei an a.+/or .,l eta•na t. le Superior Court of Ring County. .d« her sa b. at+ inrore«II• "proved ,r.. aaA aPeeino.- The notice in the exact form annexed, was published in tV sad fr a of duntr.rtidan- lar issues of The Dail Journal of Commerce. which was t u mu be obtalnM t the g+' Y v Puollo wear. naa tmsnt orn« ,gularly distributed to its subscribers during the below at the Patitda YYninlyat Hu1IAlo` pi•, it r a do It of {thee each .all sf. it «yea Poeu.e u ated period. The annexed notice, a -. . mattes Tb• dop«it •lit M ram Media aPP. r.[ure of the err ,.---.._. ..._..___..pot-Lee-oE-Sid Ca11. . .. - f: `�,,�'g �� y and rpaelnoumo. to rood eoe- p '� ditto. wltnta It", days art« y ' it bid .".fall The m.utnr obarn .......... ... ._ ..._.. . . .., .... ... .tit not M raNedeA. 1. " +p" A rertlfl•d rbwY or 41d bond ..... ' Jr m en. amount of Rq IN «that is publUll'ed on -.PdtBillary._b.,...13.,...19d1....... nT the total amdnW o! •adh Did t x .uw>mo1 0 • n hid. ..... moat .._.._..�_____...�........._.— _ __.___ ..- _.. y . T►• tltY. Falrttcroa aIW „ , R". �yt, 'n tarn•psrr mlutloa Pellet«a41 ._-. --...._._._............_- .... •-. r'.. apply. _..._.-..—..._�._._...v.. .....—_......... DIiLOLtE6 A. Y11L, Clt Mark. ll MI«or p„biteatloe Ce the .. F�Erwtf ri,fl4 Paid 1.j„Odmm•r«. .✓S��r..... .. ..._ UQ!-el _.. ___.".... Supecrt and sworn to before me on _.._...._._.__...... yG/1"3�..19.A ......... .............. No lie��1. go" WOW n. ti .5 x, {�9 GJournal ofCommerce (Eetablthed 1993) a3 COLUMBIA ST. (206--622 a272) SEATTLE. WASH. 98104 Date--- City of Renton Office of City Clerk Municipal Building 200 Mill Avenue South Renton, Ws. 98055 ---------- - --- -- . . Notice of P-id Call 6821-B Wrtydzit' Talb,)t Hill Pipelines s r e r f 56 lines @ 90C per line 5O.1tO 56 lines @ 80C per line 44.80 �?5.20 Published February F , 13, 19A1 PI«axe include A•caunt Number with Pavment "^ . I I Ilf 1:11l flli. n.UCT: TALSOLMLL_PIPLLINE5_ --- - DID DATC: f:nb.- le, I, l III : $14.00 + $2.00 Postage I I , " 1 I,,,,, cmI, r«,(jce kuir.T. 2:n') v.M. DATE ——DAT�XmiS I.ATf CHI 0, NAME _- 1 A1U ISSUED RETURNED kf I wim U Construction Data Center Plan Center) ------ l-2 P.O. Box 3165 Seattle WA 98114 223-0320 United Inner-City qev. Fngnt�ea, inc. ------ 2-?-81 ------ - --- 1?0 23rd Avenue East__ __ -(f'1-An Center) Seattle WA 98102 - " 3?5-7633 - - . -- -- Idkima Plan Center• _ Vlan CenUr} P.O. Box P467 . . .. -•- --. Yakima WA 96`KI7 - I . . . . . . . . . . . . . . . . . . S rwayj�A.'.- ^�` r . . . . . . . . . . . . . . . . . . . . . . lt : Inlsut Inll I'ual ;r.l . 4 J lltull Lull'-11'gi 1.11111 L1i. . iFll.. . i t to WA 981/ss i� A, ,w-. Sub-4Dutr.u_tur; o` Chu SLatc 1,t 'del.. I Oil (•lt Avr•. Sv. "t, Ln Hoot WA 9n4IR .'.f If ',t•t'V it.e (u (F '14 1 t , -t-S1 . . 1'.l'. ISur 1)"/1 .tat I It• HA '181w) 6 r a Y. r, a r.tt 1,i : TALROT MILL PIP11 M`-, bIU li f1 : Fill). Ill, I't"1 : l $14.00 ♦ $2.00 Pw,tagi, T1ML: 7:ull i',19, M a OATI UATL PLANS DAit Clil1 NAMI 1' 'Aft Il k_LIURN_f.0 AI T 140111 r�kl on Cur:struction, Inc. s1L-UCl �'.13-81 _--Box 5789WA %031254 _ - -�� k rapt. *; . . . . . . . r,urk Coluccio Construction Company.\ G14•119 91,TN1 Lmpire Way South ':r'atCle WA 98118 h>e4: ! I ,v•xr,, Crmrr•aCtino, TnC- =1l,.fill %-If1-81 $ y 1 1',79 Dunbar Road tLnInN. Vernon WA. 98273 /1 4r°t-1101 filw.l.vrn Ot.ilit.;r•s Su- -Ay Co a1L•nil 2-10-81 . .._ ��.. nn.t.Ir, WA 98124 . Hind" Supply Co. 3i1,.LIU 1 1•. 0 . Au+ 945 0,11- WA 9An'11 M'u' SL4❑ a i i� PU) DATi : f,,h, 11' � R+LIt i : IAL Du7 HILL VIPCL11VL5 - - l IMI. 7 roll I' " - il, , � u•J orrnee- _ - rltU ! ';Ui•(H1 � : '.OU i'US Lass= - DATC DA7[ PLANS I-,rl t I(11UI It Ui - kLTUkN1.D - .--- 6.Uu ---- .L Al.ld- Company . . - yIS Empire -Way_ South - {\ aeattle WA vi4.00 Ryan Built Homes. Inc • 2=1Il-B1 p.0. Box 45_.._ Port Orchard WA 98366 - A76-5900 . . . In, Kiay County ( r lot Construrtio'm itu19 S•L• 128th tt nton WA 98u`i5 1 and cows truction Co vIw,rr 1 i cs� i nor-,il OElncry ,t � 4 r W. p lealrvi Fw Route r ' 9A290 '• "'-. t � k toy F 2-10-d . . . . r, Uu 1 Arr, hrlr• ct)nstructinn. lnc• - IA�'ll L valley Rd .I s nt. WA `11031 \ n',1 Al n .:r i sil-BISIr r k i.4 t t : TAI ROT HILL PIPET INES DID DATE: FPL: IR, 14tt1 s •mf,» n�.e it•u i IME:, --- 2:00 P.M. i $14.00 S2.00 Pa tdge T. ':% DAT[' — [,ATt—K.Vfs DATE CHILI" NAML _ r %.I:' lSSl1FD_ RETURNED _... KCF71NU111 ••>14.00 2_g_81 .0 if is Water y_ Works Suppl S0.• + inc . �. ,, ,�gt,�,•• :�. w 1 .0- Pox 3515_-- .nattle ,WA 99124 - - .......- . . ,03-0400 r10rto Construction Co• , ti ,%S Second Avenue S• - -� WA tA511 l > umn Cuntr ctorS . Iris • - - 'R4,14. 144th Av.! - S-E - vt, WA 98031 _. ��. H• Foal or, Ca- , Inc - �,,.I I vue WA 9Ann9 Mr. Ron Olsen Page 2 February 25, 1981 S13631 .A2 paid in full for the work once the pipe is in place, tested, and backfilled, there being little money left for surface restoration. Further, if imported material or foundation stabilization is required, the contractor may be reluctant to use it at his unit prices, increasing the potential for field disagreements over whether imported backfill is to be used. Renton Construction Company has previous experience with the construction of pipelines and has done pipeline work for the City. We have had first-hand experience in working with them during construction of the Talbot Hill Reservoir in 1977. Their work was acceptable and they completed it to the satisfaction of the City. Our evaluation of the bids has resulted in the following recommendations: 1. The City should decide whether to waive the informality of the proposal _y Renton Construction Company or to reject the three low bidders because of unbalanced proposals. 2. The city attorney should review the bidding forms in the bid document of the b::dder. 3. If the informality of the proposal submitted by Renton Construction Company is waived and the required bidding forms are completed to the city attorney's satisfaction, we recommend award of the contract to them. If further clarificati; s required, please contact me. Sincerely, Joseph R. Miller lc Enclosure b, W I HILL engineers planners er onorrnstt scientist,; February 25, 1981 S13631 .A2 City of Renton Department of Public Works Municipal Building 200 Mill Avenue South Renton, Washington 980.55 Attention: Mr. Ron Olsen, Utilities Engineer „ Gentlemen: subject: Bid Evaluation Talbot Hill Pipelines Eight bids for construction of the pipelines were received and opened by the city clerk at 2:00 p.m. , February 18, ti 1981 . Tabulation of bids is enclosed s °F Renton Construction Company has submitted the lowest extended total bid. The low bidder is aefined in the contract documents as the one who submits the lowest sum of extended totals for Schedules A through 1, even though all schedule, may not be awarded. The bidding forms required to be sir by the low bidder have not Leen reviewed by us, and the attorney should review them for conformance kith city pra ce. Renton Construction Company has submitted a proposal that is obviously unbalanced. Specifically, they have a unit price of one cent for imported trench backfill material, foundation stabilization, asphalt concrete pavement, gravel surfacing, and sod. The second low bidder Di Orio Construction Company, and third low bidder, Frank Coluccio Construction Company, have also submitted unbalanced proposals but only for the imported trench backfill material. The next higher bidders have all submitted balanced unit prices. The contract documents s,;ate that proposals that are obviously unbalanced sball be considered informal. Thus the City has the choice of either waiving this informality or nct accepting the proposal. Accepting an unbalanced proposal, such as the one submitted by Renton Construction, could cause potential difficulties. The contractor would he essentially 1 *Awe ONke 15M It;th Avrm,r S t PIII•• u ,W;sh,"t,rn 9wx4 r+v LL K LCI�EfC� I A'r ivi1