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HomeMy WebLinkAboutSWP272082 • BAIMA A HOLMBERG INC. 5 ^4a PaR FILE DRAINAGE INFILTRATION SYSTEM TEMPORARY EROSION CONTROL For GREENWOOD CEMETERY crrV OF REWON Prepared By: D E C E I V E D BAIMA& HOLMBERG,INC } SEP 2 9 1992 Job No.785 001 BUILDING DIVISION Feburary 14, 1992 May 28, 1992 (Revised Tate) ,�er�iseaC 9�2d�'J2 5��PE y N'LiSy7� 1 ' It —Al a Na1.E EXPIRES 100 FRONT STREET SOUTH ISSAQUAH WASHINGTON • 98027-3817 • 2 139 0 • .roe 7f3S-�D� !'�/rani nn ( 'Pmr�Pl� BAIMA & HOLMBERG, INC. SHEET NO. OF 100 Front Street South CALCDUTED BY DATE ISSAQUAH, WASHINGTON 98027.3817 (206) 392-0250 CHECKED SV DATE SCALE �/Cc[ = 7 GlC7cs uJ/ crUiOGls = SIae - 6/7 8� P = 29 y0�66D Tavc/11mc i�s>� 3Oo � - ��cc���u/ T f (0 T = S 9, 56 rrlir/ f 5. �2 m.� = G5 28trii i0 96. Ci�S �/c,�1�Cg,�^r/J.7DGCJr ��. !✓��a�raPfr� C'am�cc�Cv- �✓ograM vnoouC SN9,Bkgb6kml NSIPNdGI®�irc.6:oan.Wa OO1.ro PArRgnF rou PRE 1dp41E5AE0 SPECIFY STORM OPTION : 1 S .C.S. TYPE-lA RAINFALL DISTRIBUTION ENTER : FREQ(YEAR) , DURATION(HOUR) , PRECIP( INCHES) 10 ,24 ,2.9 ---------------------------------------------------------------------- ******************** S.C.S . TYPE-lA DISTRIBUTION ******************** ********* 10-YEAR 24-HOUR STORM **** 2 .90" TOTAL PRECIP. ********* ---------------------------------------------------------------------- ENTER : A (PERV) , CN (PERV) , A ( IMPERV) , CN (IMPERV) , TC FOR BASIN NO. 1 7 .4 ,80 ,0 ,0,65 .28 DATA PRINT-OUT: AREA (ACRES) PERVIOUS IMPERVIOUS TC(MINUTES) A CN A CN 7 .4 7 .4 80 .0 .0 .0 65 .3 PEAK-Q(CFS) T-PEAK (HRS) VOL(CU-FT) .86 8 .17 31301 ENTER Cd :llpath7filenamel .ext ] FOR STORAGE OF COMPUTED HYDROGRAPH : 1080 P HYDROGRAPH DATA PRINT-OUT: T(HRS) Q(CFS) T(HRS) Q(CFS) T (HRS) Q (CFS) T(HRS) Q(CFS) .00 .00 6 .67 . 11 13 .33 .51 20 .00 .37 . 17 .00 6 .83 . 14 13 .50 .51 20 . 17 .37 .33 .00 7 .00 . 17 13 .67 .50 20 .33 .37 .50 .00 7 .17 .22 13 .83 .50 20 .50 .37 .67 .00 7 .33 .27 14 .00 .49 20.67 .37 .83 .00 7 .50 .38 14 . 17 .49 20 .83 .37 1 .00 .00 7 .67 .60 14 .33 .49 21 .00 .37 1 . 17 .00 7 .83 .80 14 .50 .49 21 . 17 .37 1 .33 .00 8.00 .86 14 .67 .48 21 .33 .37 1 .50 .00 8 . 17 .86 14 .83 .47 21 .50 .37 1 .67 .00 8 .33 .85 15 .00 .47 21 .67 .37 1 .83 .00 8 .50 .85 15 . 17 .46 21 .83 .37 2.00 .00 8 .67 .82 15 .33 .46 22.00 .37 2 . 17 .00 8 .83 .79 15 .50 .45 22 .17 .37 2 .33 .00 9 .00 .75 15 .67 .45 22.33 .37 2 .50 .00 9 . 17 .73 15 .83 .45 22 .50 .37 2 .67 .00 9 .33 .71 16 .00 .44 22 .67 .37 2 .83 .00 9 .50 .69 16. 17 .44 22 .83 .38 3 .00 .00 9 .67 .68 16.33 .44 23 .00 .38 3 .17 .00 9 .83 .67 16 .50 .44 23 . 17 .38 3 .33 .00 10.00 .66 16.67 .43 23 .33 .38 3 .50 .00 10. 17 .65 16 .83 .42 23 .50 .38 3 .67 .00 10 .33 .65 17 .00 .41 23 .67 .38 3 .83 .00 10.50 .65 17.17 .40 23 .83 .38 4 .00 .00 10 .67 .64 17 .33 .40 24.00 .35 4 . 17 .00 10.83 .62 17 .50 .39 24 . 17 .30 4 .33 .00 11 .00 .61 17 .67 .39 24 .33 .26 4 .50 .00 11 . 17 .60 17 .83 .38 24 .50 .22 4 .67 .00 11 .33 .59 18 .00 .38 24 .67 . 19 4 .83 .00 11 .50 .58 18 .17 .38 24 .83 .16 5 .00 .00 11 .67 .58 18.33 .37 25 .00 .14 5 . 17 .00 11 .83 .58 18 .50 .37 25 . 17 . 12 5 .33 .00 12 .00 .57 18.67 .37 25 .33 . 10 5 .50 .01 12 . 17 .57 18.83 .37 25 .50 .09 5 .67 .02 12 .33 .57 19.00 .37 25 .67 .08 5 .83 .03 12.50 .57 19. 17 .37 25 .83 .00 6 .00 .04 12 .67 .56 19 .33 .37 26.00 .00 6 . 17 .05 12 .83 .55 19.50 .37 26 . 17 .00 6 .33 .07 13 .00 .53 19 .67 .37 26 .33 .00 6 .50 .09 13 .17 .52 19.83 .37 26.50 .00 SPECIFY : C - CONTINUE, N - NEWSTORM , P - PRINT , S - STOP MI. TO INTERSTATE 90 \�)5AkF (Joins sheet 5) AmC ISSAQUAH 11 MI. 10' • + A,- •-i i5 w� IVA An s • Y F. A ' E? i ism ■■ ■ ?A s r 42a "1 % Ilr � .e. � it � � n�Ni_ i � �•� A � It r • OAAYIL "PIT • •L • # •• I i�'+'• •.�1�97�;' �' �M' • +. :j /q yam: �5(,�' � :F vC . 1� 2 i� •-.•.� l � r 1 r+� Q •` w••� Y � q` . �AmC .'SrXI. S .�, �y,� �C •.� «R Will • P I s • M h., .•� i .•fit 'tom I _ •' J Tel r Y• ..AN �L"�e•,, t M � •,• � 6 S 1 `G�"•, Y qq Y f � r t• r , I��;s . . . I . it E •�^ - _ - _ _ Ursic + ,, °`Air ` •92 ice•" � skallower or deeper over the compact substratum; ...",� `V ° "`1'Un ul aUUUt 19 indics. the lower part of the subsoil is olive-brown very gravelly and some areas are 5 to 10 percent very gravelly sandy loam. Fractured sandstone is at a depth of J Everett soils and sandy Indianola soils . about 38 inches. Runoff is medium, and the erosion hazard is Beausite soils are used for timber and pasture. moderate to severe. Some areas have been used for urban development. This soil is used for urban development. Ca- pabilitya unit IVc-2; woodland group 3d2. i5t > Beausite gravelly sandy loam 6 to 15 percent Arents, Everett material (An) .--lUis is a level s10 es (ReCJ .--Areas of this soil are 20 acres or to gently sloping, dark-brown gravelly or very more in size. Slopes are long and convex. gravelly sandy loam. It is very similar to Everett Representative profile of Beausite gravelly gravelly sandy loam (see Everett series) , but it sandy loam, 6 to 15 percent slopes, in woodland, has been disturbed and altered through urban de- 570 feet south and 800 feet east of the northwest velopment. Multicolored very gravelly coarse sand corner of sec. 29, T. 24 N., R. 6 E.: is at a depth of 8 to 40 inches. Areas are common- ly rectangular in shape, and range from I to 120 acres in size. 01--2 inches to 1/2 inch, undecomposed leaf litter.Representative profile of Arents, Everett mate- 02--1/2 inch to 00 black (IOYR 2/1) decomposedaf litter. rial, in a homesite, 440 feet west and 100 feet AI--O le le 6 inches, dark-brown IOYR 3 3 north of the center of sec. ]I, T. 24 N., R. 6 E.: ( / ) gravelly sandy loam, brown (IOYR 5/3) dry; weak, fine, 0 to 8 inches, dark-brown / )7.SYR 3 4 gravelly granular stnicture; soft, very friable, (sandy loam, brown (7.5YR 5/4) dry; massive; nonsticky, nonplastic; many roots; slightlyacid; clear, wav bounds soft, very friable, nonsticky, nonplastic; Y ry. 5 to 7 inches few roots; 30 percent gravel content; thick. 621--6 to 19 inches, dark yellowish-brown (10YR 4/4) slightly acid; clear, smooth boundary. 8 to 14 inches thick. gravelly sandy loam, light yellowish brown 8 to 60 inches, grayish-brown and light olive-brown (10YR 5/4) dry; massive; soft, very friable, (2.5Y 5/2 and 5/4) very gravelly coarse nonsticky, nonplastic; many roots; slightly acid; clear, irregular boundary, 10 to 15 sand, light gray and light yellowish brown g (2.SY 7/2 and 6/4) dry; single inches thick. g grain; loose, B22--19 to 38 inches, olive-brown (2.5Y 4/4) very nonsticky, nonplastic; few roots; SS percent gravelly sandy loam, light yellowish brown gravel and 10 percent cobblestone content; 5Y(2. 6 4 medium acid. / ) dry; massive; soft, very friable, nonsticky, nonplastic; comaon roots; medium The upper part of the soil ranges From dark acid; abrupt, irregular boundary, brown to olive brown and from gravelly sandy loam IIR--38 inches, fractured sandstone; medium acid. to very gravelly loamy sand. The substratum ranges.: from black to olive brown. The A horizon ranges from very dark grayish This soil is somewhat excessively drained. The brown to very dark brown and dark brown. The B effective rooting depth is 60 inches or more. horizon ranges from dark grayish brown to dark Permeability is rapid, and available water capacity yellowish brown and olive brown, it is gravelly is low. Runoff is slow, and the erosion hazard and very gravelly sandy loam and gravelly loam. is slight. , Depth to sandstone ranges from 20 to 40 inches. This soil is used for urban development. Ca- Some areas are up to 20 percent included Alder- pability Unit TVs-1; woodland group 3f3. wood soils, which have a consolidated substratum, and Ovall soils, which are underlain by andesite; some are up to 5 percent the wet Norma and Seattle Beausite Series soils; some are up to 5 percent Beausite soils that have a gravelly loam surface layer and subsoil; and The Beausite series is made up of well-drained some are up to 10 percent soils that are similar to soils that are underlain by sandstone at a depth Beausite soils, but are more than 40 inches deep of 20 to 40 inches . These soils formed in glacial over sandstone. deposits. They are rolling to very steep. Slopes Roots penetrate easily to bedrock and enter a are 6 to 75 percent. The vegetation is alder, fir, few cracks in the bedrock. Permeability is cedar, and associated brush and shrubs. The annual moderately rapid. Available water capacity is low. precipitation is 40 to 60 inches, and the mean Runoff is medium, and the hazard of erosion is annual temperature is about 50° F. The frost-free moderate. season ranges from 160 to 190 days. Elevation is This soil is used for timber and pasture and for 600 to 2,000 feet. urban development. Capability unit IVe-2; woodland In a representative profile, the surface layer group 3d2. and the upper part of the subsoil are dark-brown 11 b " KING COUNTY, WASHINGTON, SURFACE WATER DESIGN MANUAL FIGURE 3.31A HYDROLOGIC SOIL GROUP OF THE SOILS IN KING COUNTY SOIL GROUP HYDROLOGIC HYDROLOGIC GROUP* SOIL GROUP GROUP* Alderwood C Orcas Peat Aroma, Alderwood �Aa`erfm OrMl D Arents, Everett RWNW OvaA D BeausRe Bellingham C Plchuck C 8rlscd D Puget D Buckley D Puyallup B CoastalSeaches Vedada Renton B Edgewle Silt Loam D Riverwash D Edgewk k C Salal Variable Indianola A Sammamish C KAsep A Seattle Klaus C Shecar D Mixed Alluvial Land C SI Sit C NeAton Variable Snohomish D Newberg A Sultan C Nooksack B ran D Normal Sandy Loam p Urban Variable Woodinville D HYDROLOGIC SOIL GROUP CLASSIFICATIONS A -(Low rurtofl potentlal). Solis having high Infiltration rates, even when thoroughly wetted, and consisting chiefly f deep, weN-to-excesshrely drained sands or grs;a S. These soils have a high rate d water trensmisskxt. B. (Moderately low runoff potentlen. Sots having moderate infllratlon rates when thoroughly wetted, end corsfstirg chiefly d moderately fine to moderately coarse textures. These Bola have a moderate rate d water trI C. (Moderately high mnoR Potwtis't°. Sots having slow Infiltration rates when thoroughly wetted, and Rns Ir con1Oft T► "•�e arat d water downward ensm ssl«i mett d water. a aWa with moderately D. cMe Y h runoff�� Saole having very slow hnfitralfon rates when thoroughly wetted and consisting herd n a cl with ay h�awellkq�entW' Bola with a permanent high water table, sofa with e Pa y Myer at or near the stoface, and shaflow soils over ready Impervious meter l These sole have a very slow rate of water traramhsion. • From SCS. TR-ss, Second Edikx%Ju a 1gBs, Exhibit A-1. Revisions made from SCS, Sd Interpretation Record. Form 05. September 19 3.5.2-2 1/90 KING COUNTY, WASHINGTON, SURFACE WATER DESIGN MANUAL / TABLE 3.5.28 SCS WESTERN WASHINGTON RUNOFF CURVE NUMBERS 1 SCS WESTERN WASHINGTON RUNOFF CURVE NUMBERS (Pubushed by SCS In IM) Runoff curve numbers for selected agricultural, suburban and urban land use for Type to ralrMall distribution. 24-hour storm duration. CURVE NUMBERS BY LAND USE DESCRIPTION HYDROLOGIC SOIL GROUP A B C D Cultivated land.(1): winter condition 88 91 94 95 Mountain open areas: low growing txueh and grasslands T4 82 89 92 Meadow or pasture: 65 78 85 89 Wood or forest land: undisturbed 42 64 76 81 Wood or forest land: young second growth or brush 55 72 at _Be Orchard: with cover crop 81 88 92 94 Open spaces, tawny, parks. 91:1f curses, cemeteries, landscaping. good condition: grass cover on 75% or more of the area 68 86 90 fair condition- grass cover on 50% to 75% of the area 77 85 90 92 Gravel roads and parking lots 76 85 89 9l Dirt roads and parking lots 72 82 87 91 Impervious surfaces. pavement, roofs. etc. 98 98 98 98 Open water bodies: lakes. wetlands. ponds. etc. too too too 100 Single Family Residential (2) Dwetlinp Linh/Gross Akre % Impervious (3) 1.0 DU/GA 15 Separate curve number 1.5 DU/GA 20 snail be selected2.0 DU/GA 25 2.5 DU/GA 30 for pervious and 3.0 DU/GA 34 Impervious portion 3.5 DU/GA of the she or basin 38 4.0 DU/GA 42 4.5 DU/GA 48 5.0 DU/GA 48 5.5 DU/GA 50 6.0 DU/GA 52 6.6 DU/GA 554 7-0 DU/GA so Planted unit developments, % impervious condominiums, apartments, must be computed commercial business and Industrial areas. (1) For a more detailed description of agricultural land use curve numbers refer to National Engineering Handbook, Section 4, Hydrology, Chapter 9, August 1972. (2) Aselmles roof and driveway rinof Is directed kilo street/storm system. (3) The remaining pervious areas pawn) are considered to be In good condklon for these curve numbers. 3.5.2-3 1/90 JDB BAIMA & HOLMBERG, INC. SHEET NO. OF 100 Front Street South CALCULATED BY. �Ld/ DATE ISSAQUAH, WASHINGTON 98027-3817 (206) 392.0250 CHECKED BY DATE SCALE �c><crmirl%rIa /il tillYClTIOI� >�a�c fir, T�/er il/ra/'aw � re 0/- i?/ - qr�c (-S'cc/C411ae e� re,001 -1hc reUCt9ii7rYlena'e6� In 111ra 9:� rate IISOCI� larGle�xig/7 iS e�'. v�diYi. Lacl �ua�Cli�rU� U l94rn GOsrc /2nv �I = D.86e�s/O. aae710<c �Pcr_ nq Lai�� >/N /r'e 61-e/77t�7 W/�i� Gl.Ssu/kicGe e,(�eC7/�✓e G1'rc�Ct., c��$ ,?r�cL7 ll fei�q�i) D� Sf�O. L i-. Z6�• d��L l` cfrcal'e r ��z Ar! Ac i-efa clrcCe.. r✓ 25�57.��� =� 7Ycn� �5„ Q.fc{iGeGt.7/G,_ ;_ //. . mcoucrm_i iWaa uan�m+�vw�®.:m,run.wa Dial.to aa nu,rou�ieoo-mmao Joe BAIMA & HOLMBERG, INC. SHEET NO, OF 100 Front Street South CALCULATED By �L DATE ISSAQUAH, WASHINGTON 98027-3817 (206) 392-0250 CHECKED BY DATE SCALE ----------------- EX,1-5T. 9'q4 JE. (Nt3ril E�spres} o 6 o �Df -._— Q �0 1n�i��rrit7Grl v ! � \ GG/�`rr�c fj 2.75 , ef � lee vc a cue a �c idG si -c_ Gt✓cats. Joe %tsb J01 ( i ifs �f ✓ I BAIMA & HOLMBERG, INC. SHEET NO OF 100 Front Street South CALCULATED BY DATE ISSAQUAH, WASHINGTON 98027-3817 (206) 392.0250 CHECKED BY DATE SCALE /�fS/ozg 7`le ?V'dcr✓ "'-Jo ljow) C�/jec7 _1 �pci✓ = 7Y � Lti =go �45. 7/- Wa C 7`O .lrl.,{1�7YCc y/®I?} /S Lo 11lxal GI/ 7�G iV 0.,2 3cir7 ,die 6ofidr� a✓cy� 7). dro -1-r.fn 47uILI1 7 e ,�yyr. h fo We-7erm✓ri e 71we anmurtw-t lSryb SMbl MtlhE0M1®airc,sidan.wxiouri.roue BpAF Nu maiaoo-m8J8o JOB / l-C/J It. '✓ BAIMA & HOLMBERG, INC. SHEET NO. OF 100 Front Street South CALCULATEDBv DATE ISSAQUAH, WASHINGTON 98027-3817 (206) 392-0250 CHECKED BY DATE SCALE /.65c�s � B, D �irs /tllCaS C I J G D,A? a. 3 Kr 8. 0 o 0. .3. ; �ir /08!✓? sce. € J/b"�irs = �/f/�scc., V= /U80 O.33 179 3 Ire �YDru c rav�c�P�� ir7� X ro 2,DU x ��Uf _ �a�8�i��,�� �i✓�.30% oro.s� , �r� ./�/OdiGCtGG I/Q�lliY/G d �SB�i�C311 3lS Q/cC[Xlr IG17 �G�(4!/rtr� =mcucrm4i ismbsn�aiasp ®aiz.G;o u 01ei.m0a,nwremLm uWMn SPECIFY STORM OPTION: 1 S .C.S. TYPE-IA RAINFALL DISTRIBUTION ENTER: FREQ(YEAR) , DURATION (HOUR) , PRECIP ( INCHES) 100 ,24 ,3 .9 ---------------------------------------------------------------------- ******************** S .C.S. TYPE-IA DISTRIBUTION ******************** ********* 100-YEAR 24-HOUR STORM **** 3 .90" TOTAL PRECIP . ********* ---------------------------------------------------------------------- ENTER : A (PERV) , CN (PERV) , A ( IMPERV) , CN( IMPERV) , TC FOR BASIN NO. 1 7 .4 ,80 ,0 ,0,65 .3 DATA PRINT-OUT: AREA (ACRES) PERVIOUS IMPERVIOUS TC(MINUTES) A CN A CN 7 .4 7.4 80.0 .0 .0 65 .3 PEAK-Q(CFS) T-PEAK(HRS) VOL(CU-FT) 1 .65 8.00 52071 ENTER 1d :1Cpath3filenamel .extJ FOR STORAGE OF COMPUTED HYDROGRAPH: 100YR P HYDROGRAPH DATA PRINT-OUT: T (HRS) Q(CFS) T(HRS) Q (CFS) T(HRS) Q(CFS) T(HRS) Q (CFS) .00 .00 6 .67 .33 13 .33 .82 20 .00 .56 . 17 .00 6 .83 .39 13 .50 .81 20 .17 .56 .33 .00 7 .00 .45 13 .67 .80 20.33 .56 .50 .00 7 . 17 .53 13 .83 .79 20.50 .56 .67 .00 7 .33 .64 14 .00 .78 20.67 .56 .83 .00 7 .50 .82 14 . 17 .77 20.83 .56 1 .00 .00 7 .67 1 .23__ 14 .33 .77 21 .00 .56 1 . 17 .00 7 .63 1 .57 14 .50 .76 21 . 17 .56 1 .33 .00 8 .00 1 .65 14 .67 .76 21 .33 .56 1 .50 .00 8 . 17 1 .64 14 .63 .74 21 .50 .56 1 .67 .00 8 .33 1 .60 15 .00 .73 21 .67 .56 1 .83 .00 8 .50 1 .57 15 . 17 .72 21 .83 .56 2 .00 .00 8 .67 1 .51 15 .33 .71 22.00 .56 2 .17 .00 8 .83 1 .43 15 .50 .70 22 . 17 .56 2.33 .00 9.00 1 .36 15 .67 .70 22 .33 .56 2 .50 .00 9. 17 1 .30 15 .83 .69 22 .50 .56 2 .67 .00 9 .33 1 .25 16.00 .69 22 .67 .56 2 .83 .00 9 .50 1 .21 16.17 .69 22 .83 .56 3 .00 .00 9 .67 1 .18 16 .33 .68 23 .00 .56 3 . 17 .00 9 .83 1 . 15 16.50 .68 23 . 17 .57 3 .33 .00 10 .00 1 . 13 16.67 .67 23 .33 .57 3 .50 .00 10 . 17 1 . 12 16 .83 .65 23 .50 .57 3 .67 .00 10 .33 1 .10 17 .00 .64 23 .67 .57 3 .83 .00 10.50 1 .09 17 . 17 .62 23 .83 .57 4 .00 .00 10 .67 1 .07 17 .33 .61 24 .00 .53 4 . 17 .00 10.83 1 .04 17 .50 .60 24 . 17 .45 4 .33 .00 11 .00 1 .01 17 .67 .59 24 .33 .39 4 .50 .01 11 . 17 .99 17 .83 .59 24 .50 .33 4 .67 .02 11 .33 .97 18 .00 .58 24 .67 .29 4 .83 .03 11 .50 .96 18. 17 .58 24 .83 .25 5 .00 .05 11 .67 .95 18.33 .57 25 .00 .21 5 .17 .07 11 .83 .94 18 .50 .57 25 . 17 . 18 5 .33 .09 12 .00 .93 18 .67 .57 25 .33 . 15 5 .50 . 11 12. 17 .92 18.83 .56 25 .50 .00 5 .67 . 13 12 .33 .92 19.00 .56 25 .67 .00 5 .83 . 16 12 .50 .92 19. 17 .56 25 .83 .00 6 .00 . 19 12.67 .90 19 .33 .56 26.00 .00 6 . 17 .22 12 .83 .88 19.50 .56 26 . 17 .00 6 .33 .26 13 .00 .85 19 .67 .56 26 .33 .00 6 .50 .29 13 . 17 .84 19 .83 .56 26 .50 .00 SPECIFY : C - CONTINUE , N - NEWSTORM , P - PRINT , S - STOP .roe r BAIMA & HOLMBERG, INC. SHEET NO. OF- 100 Front Street South CALCULATED By DATES T- ISSAQUAH, WASHINGTON 98027-3817 (206) 392-0250 CHECKED BY DATE SCALE i7nQ 1/7,�i1ra�©/J. /r<r1cf� /Q rc L� ��us /ri�G[Ta� Gf fYi'CGz ,�/�ri�®�✓cppcc�, �76T . 92 zcres �l�CteSc [1 /�7�cr6JiozC.S a✓tea = 0,22ac. � �v-95 Y = z9 yJs= 4. 2��G/erlsc grass) Zmc 7ra Dc1 sh«///� �irs0' 0.8 _ , Yo clOm.� �ortcenkacJ11 / �imc , /ra dc/ - SLia�l�ul o,w '7lcsT 20U .000 /.���. = �D• �D min f l SD m.n � YZ. ZOrn.i� qd c�s weme. mni�srge srni rs.i�rebeai®sz.elan.xm aun roae.wane tau rHa iammmeo SPECIFY STORM OPTION: 1 S .C. S. TYPE-lA RAINFALL DISTRIBUTION ENTER: FREQ(YEAR) , DURATION(HOUR) , PRECIP( INCHES ) 10 , 24 , 2 . 9 ---------------------------------------------------------------------- *****#************** S.C.S . TYPE-lA DISTRIBUTION *#****###*####***### ********# 10-YEAR 24-HOUR STORM **** 2. 90" TOTAL PRECIP. ######**# ---------------------------------------------------------------------- ENTER: A(PERV) , CN(PERV) , A( IMPERV) , CN( IMPERV) , TC FOR BASIN NO. 1 6. 6 , 80, . 22 , 98 , 42 . 2 DATA PRINT-OUT: AREA(ACRES ) PERVIOUS IMPERVIOUS TC(MINUTES ) A CN A CN 6 . 8 6 . 6 80.0 . 2 98 . 0 42 . 2 PEAK-Q(CFS ) T-PEAK(HRS) VOL(CU-FT) 1 .06 8.00 30078 ENTER [d: ] [path]filename[ .ext] FOR STORAGE OF COMPUTED HYDROGRAPH: P HYDROGRAPH DATA PRINT-OUT: P(HRS) Q(CFS ) MRS) Q(CFS ) MRS ) Q(CFS) T(HRS) Q(CFS ) . 00 . 00 6 . 50 . 13 13 .00 . 49 19. 50 . 34 . 17 . 00 6 . 67 . 16 13 . 17 . 47 19. 67 . 34 . 33 . 00 6.83 . 20 13 . 33 .47 19.83 . 34 . 50 .00 7 .00 . 24 13 . 50 .46 20. 00 . 34 . 67 . 00 7 . 17 . 29 13. 67 . 46 20. 17 . 34 . 83 . 00 7 . 33 . 36 13 .83 . 45 20 . 33 . 34 1 .00 .00 7 . 50 . 49 14 . 00 .45 20. 50 . 34 1 . 17 . 00 7 . 67 . 79 14 . 17 .45 20. 67 . 34 1 . 33 . 00 7 .83 1 . 03 14 . 33 . 45 20.83 . 34 1 . 50 .00 8.00 1 . 06 14 . 50 . 45 21 .00 . 34 1 . 67 .00 8. 17 1 . 02 14 . 67 . 44 21 . 17 . 35 1 .83 . 01 8 . 33 . 96 14 . 83 . 43 21 . 33 . 35 2 . 00 .01 8. 50 . 92 15 .00 . 43 21 . 50 . 35 2 . 17 .01 8. 67 . 87 15 . 17 .42 21 . 67 . 35 2 . 33 .01 8 . 83 . 79 15 . 33 .42 21 . 83 . 35 2 . 50 . 01 9. 00 . 74 15 . 50 .41 22 . 00 . 35 2 . 67 . 01 9. 17 . 70 15 . 67 .41 22 . 17 . 35 2 . 83 . 01 9 . 33 . 67 15 .83 .41 22 . 33 . 35 3 .00 .01 9 . 50 . 64 16 .00 .41 22 . 50 . 35 3 . 17 . 01 9 . 67 . 63 16 . 17 . 41 22. 67 . 35 3 . 33 .01 9.83 . 62 16 . 33 . 41 22.83 . 35 3 . 50 .02 10.00 . 61 16 . 50 . 41 23 .00 . 35 3 . 67 .02 10. 17 . 60 16 . 67 . 40 23 . 17 . 35 3 . 83 .02 10. 33 . 60 16.83 . 38 23 . 33 . 35 4 .00 . 02 10. 50 . 60 17 .00 . 37 23 . 50 . 35 4 . 17 . 02 10. 67 . 59 17 . 17 . 36 23 . 67 . 35 4 . 33 . 02 10. 83 . 57 17 . 33 . 36 23 . 83 . 36 4 . 50 . 02 11 . 00 . 56 17 . 50 . 35 24 . 00 . 32 4 . 67 .02 11 . 17 . 54 17. 67 . 35 24 . 17 . 25 4 . 83 . 02 11 . 33 . 54 17 . 83 . 34 24 . 33 . 20 5 . 00 .02 11 . 50 . 53 18 . 00 . 34 24 . 60 . 16 5 . 17 .03 11 . 67 . 53 18 . 17 . 34 24 . 67 . 12 5 . 33 .03 11 .83 . 53 18 . 33 . 34 24 .83 . 10 5 . 50 . 04 12 .00 . 53 18 . 50 . 34 25 . 00 .00 5 . 67 .05 12. 17 . 53 18 . 67 . 34 25 . 17 .00 5 . 83 . 06 12 . 33 . 53 18 .83 . 34 25 . 33 . 00 6 .00 . 08 12 . 50 . 53 19.00 . 34 25 . 50 . 00 6 . 17 . 10 12 . 67 . 52 19. 17 . 34 25 . 67 . 00 6. 33 . 11 12 . 83 . 50 19. 33 . 34 25 . 83 .00 WECIFY: C - CONTINUE, N - NEWSTORM, P - PRINT, S - STOP XIAK GRADE BRE F k ___ AK I TRIBUTARY AREA ■ /.02 ac E w/ pervious *ran ■ 0.8 aC / /�,• )Li ;l `} ~l: wpervious area ■Gt?2ac Q " '• �' : Uf -` ' ' Run-off coefficient ■ C•A�pm=Ups CA)imp-98 .7 Q` . �, ...• -�., ;�.7 r,i F` , � TOP OF SLOPE T Or SLOPE 3 iL ! ELEV. 242At EXISTING GRADE iL V; BREAM — W 5 o t w >1N �cLU o BAIMA & HOLMBERG, INC. SHEET NO. OF Or 100 Front Street South CALCULATED BY ELM DATE q Z!Z& — ISSAQUAH, WASHINGTON 98027-3817 (206) 392-0250 CHECKED BY DATE SCALE ,�cterira:iJ��i fig x�lYtt17an rfa/c = .m C� 11.7 eealiora �esf /'a�o f � / /c rf z�efic� ✓c �.f) �!C rCCOmmGe7wed >r� lmZA-rl rG/c, 6fScdiprC[c-v17 js O ; �= /D6s/0 00o7111sec, YG /„�.I/GM. -11 (c. .,(a CAP- a/ -t7 G r""Jr c � rcqu�ieor! ar�cc.// // 279, 0 .9✓c�c = // 0 127�,off - 3 5 . D ��- Pro�idcd '. �,se _777e Pfod>ded �layaT/oYJ ClicG� a �03�0,(/Z/>s rea fer fGrar, do '0-e lrcd circa. 67 %IObuLI PI.1�SrgY Shoe t03'I(Pap1Ml®s Irc.G[bn,MR.0191.1a PEn OMB[iQLLMF IdW2n-6'1Po dDe BAIMA & HOLMBERG, INC. SHEET NO. OF 100 Front Street South CALCULATED BY DATE T/z4/17z ISSAQUAH, WASHINGTON 98027.3817 (206) 392.0250 CHECKED BY DATE SCALE C,YI«lZ,ii7�. T�cf C'arx�c�L� �a• �OOyr ,1'�rm /o ��Yerrrlino�/1e ���itrrlour��a rurol�r We u�il/u�°e �/e same. �i�cr:cL as we d,oL ro�i.�dlic /Dora.- s>✓orirj Q 6 ��1 r su s r v /r= fr« Pcrviaats = 66ac �nnL'v= OD A� /ryi{Xrvlo" = Q. ZZ L,tI �oo � e39 Qu•- i"�c�sc ra 7<c ' q�u G � i n�li��c�`� i� o 2,/Zs 7LiG10 @/- 9Se�s 7.S' 'wi//u�o•- /OD�cgi dorm =7'Ox— mazer sa-i�sn,mi msi�vmq®®�.�m�.wm Nnr roaannu[iai ma immsm SPECIFY STORM OPTION: 1 S.C. S. TYPE-IA RAINFALL DISTRIBUTION ENTER: FREQ(YEAR) , DURATION(HOUR) , PRECIP( INCHES) 100, 24 , 3 . 9 ---------------------------------------------------------------------- ******************** S .C.S. TYPE-lA DISTRIBUTION ##*******#*#######** ********* 100-YEAR 24-HOUR STORM **** 3 . 90" TOTAL PRECIP. **#***### ---------------------------------------------------------------------- ENTER: A(PERV) , CN(PERV) , A( IMPERV) , CN( IMPERV) , TC FOR BASIN NO. 1 6 . 6,80 , . 22 , 98 , 42 . 2 DATA PRINT-OUT: AREA(ACRES) PERVIOUS IMPERVIOUS TC(MINUTES) A CN A CN 6.8 6 . 6 80 .0 . 2 98 . 0 42. 2 PEAK-Q(CFS) T-PEAK(HRS ) VOL(CU-FT) 1 . 95 8. 00 49461 ENTER [d: ) [Path) Yilename[ .ext) FOR STORAGE OF COMPUTED HYDROGRAPH : P HYDROGRAPH DATA PRINT-OUT: T(HRS) Q(CFS) T(HRS) Q(CFS ) T(HRS ) Q(CFS) T(HRS ) Q(CFS) . 00 .00 6 . 50 . 35 13 . 00 . 76 19. 50 . 51 . 17 .00 6. 67 . 41 13 . 17 . 74 19. 67 . 51 . 33 . 00 6 . 83 .48 13 . 33 . 73 19.83 . 51 . 50 . 00 7 . 00 . 55 13 . 50 . 72 20.00 . 51 . 67 .00 7. 17 . 64 13 . 67 . 71 20. 17 . 51 . 83 .00 7 . 33 . 76 13 . 83 . 71 20 . 33 . 52 1 . 00 . 00 7. 50 1 .00 14 .00 . 70 20. 60 . 52 1 . 17 . 00 7 . 67 1 . 53 14 . 17 . 70 20. 67 . 52 1 . 33 . 01 7 .83 1 . 93 14 . 33 . 70 20. 83 . 52 1 . 50 . 01 8. 00 1 . 95 14 . 50 . 70 21 . 00 . 52 1 . 67 . 01 8 . 17 1 . 85 14 . 67 . 69 21 . 17 . 52 1 . 83 .01 8. 33 1 . 73 14 . 83 . 67 21 . 33 . 52 2.00 . 01 8 . 50 1 . 64 15 .00 . 66 21 . 50 . 52 2 . 17 . 01 8 . 67 1 . 52 15 . 17 . 65 21 . 67 . 52 2 . 33 .01 8 . 83 1 . 39 15 . 33 . 64 21 .83 . 52 2 . 50 . 02 9.00 1 . 28 15 . 50 . 64 22 .00 . 62 2. 67 . 02 9 . 17 1 . 20 15 . 67 . 63 22 . 17 . 52 2 . 83 . 02 9 . 33 1 . 14 15 .83 . 63 22 . 33 . 52 3 . 00 .02 9. 50 1 . 09 16 . 00 . 63 22 . 50 . 52 3 . 17 . 02 9. 67 1 . 06 16 . 17 . 63 22 . 67 . 52 3 . 33 .02 9.83 1 . 03 16. 33 . 63 22.83 . 53 3 . 50 . 02 10. 00 1 .01 16. 50 . 62 23 .00 . 53 3 . 67 .02 10. 17 1 . 00 16. 67 . 61 23 . 17 . 53 3 . 83 .03 10. 33 . 99 16 . 83 . 59 23 . 33 . 53 4 .00 . 03 10. 50 . 98 17 .00 . 57 23 . 50 . 53 4 . 17 . 03 10. 67 . 96 17. 17 . 56 23 . 67 . 53 4 . 33 . 03 10 . 83 . 93 17. 33 . 54 23 . 83 . 53 4 . 50 . 04 11 .00 . 90 17 . 50 . 64 24 . 00 . 47 4 . 67 . 06 11 . 17 . 88 17 . 67 . 53 24. 17 . 37 4 .83 . 08 11 . 33 . 86 17 . 83 . 52 24 . 33 . 29 5 .00 . 10 11 . 50 . 85 18 .00 . 52 24. 50 .23 5 . 17 . 12 11 . 67 .85 18. 17 . 52 24 . 67 . 18 5 . 33 . 14 11 .83 .84 18 . 33 . 52 24 . 83 . 00 5 . 50 . 16 12 .00 . 84 18 . 50 . 51 25 . 00 . 00 5 . 67 . 19 12 . 17 . 84 18. 67 . 51 25 . 17 .00 5 .83 . 23 12 . 33 .84 18.83 . 51 25 . 33 . 00 6 . 00 . 26 12. 50 .84 19. 00 . 51 25 . 50 .00 6 . 17 . 29 12 . 67 . 82 19. 17 . 51 25 . 67 . 00 6. 33 . 32 12 . 83 . 79 19. 33 . 51 25 .83 .00 PECIFY: C - CONTINUE, N - NEWSTORM, P - PRINT, S - STOP KING COUNTY, WASHINGTON, SURFACE WATER DESIGN MANUAL FIGURE 4.3.5G CRITICAL DEPTH OF FLOW FOR CIRCULAR CULVERTS 120 00O 114 OA9 106 2,000 102 Woo 90 64 0.90 500 r6 400 rz 300 0.60 O•7-6-- zoo 0.70 60 0.60 —54 —48 50 = 40 0.50 30 N f 42 a 20 0.40 � 36 a 10 `a 33 QA1 30 5 D 40.30 27 3 21 2 zl T 1 Note For all cross-sectional shapes, d.can be calculated by ago 16 trial and error knowing that the quantity (02T/gA3)=1.0 at critical depth. u EXAMPLE �Poo= /.9Sc�ls -- -- -- — -- -- D= gd D = 66 inches, Q = 100cfs ��D =o- 7-5- dc/D - Ratio = 0.50 I2 +r / d, = (0.50)(66 inches) = 33 inches + (12 inches/ft) �S do = 2.75 feet s'(eaclua � 4.3.5-15 1/90 7 8" PERF iPVC o a R=4.5' 8" PERF PVC PIPE OFF SET 8" PERF, PIPE FROM CENTERLINE OF 54" CATCH BASIN TO MAINTAIN 2.0' MIN. CLEARENCE BETWWEN RISERS AND ACCESS LADDER JOB -ov BAIMA & HOLMBERG, INC. SHEET NO, OF 100 Front Street South CALCULATED BV .-Q_i DATE_�� ISSAQUAH, WASHINGTON 98027.3817 (206) 392-0250 CHECKED BY DATE SCALE GLS/n¢ t'i/rrq �oun� �N�u✓�a�� �,(Jt��er �C.s�� �/�Qnu<c I: 0 n/n �y/ . ,-7a 17le Sc irn,-41 EJrD/Q;yc G a !?%yr7 crdw1ii1l. laC—x' zg Cd= /,Q � RSsumc rIo loarn� CoYcr� /.0 l A _/3� , i �"7 C kJ, sa /0, 36 �n s 0. 0 V"I - /D..��/ID. a5 2a7 2 �f 3 vxoaxraw.i IswaM sreeul mi�vm,al®o M.sue.K.amnr.roaKUAgIA mono imznmro JOB LIle BAIMA A HOLMBERG, INC. SHEET NO. OF 100 Front Street South CALCULATEDBv--cs DATE ISSAQUAH, WASHINGTON 98027.3817 (206) 392.0250 CHECKED BY DATE SCALE l /i FT, use f77u<T /o,7W 11 / trak/ 441 POorJGiT�G17s yD i urc auelinc crzrr! r/a e 1l, aI14y C?= ago / �o 35i6 $/d /660 O o09/�><�� ri��slr �rrz�c PonG�r7/�r�s�. C 660. 0 ' /� o _ /0./ O. Dow = a.76 /Yatc Z�ue >` e Om�ur� a 7o oc 6rou�t 0n�� >`�ic S i7Ei a /i j/ rU17ell deP(Iialer, vlll 6c urP�P. / 6/ o.651 Lo ym 0ig r �uii��/ cS�f/may 0/7 %rya- _ //0a d"y JOB ` - i P BAIMA & HOLMBERG, INC. SHEET NO. OF 100 Front Street South CALCULATED BY L/� DATE 5/2B ISSAQUAH, WASHINGTON 98027-3817 (206) 392-0250 CHECKED BY DATE SCALE c erir�inz<�� im�n iGn s 0� d ��lii�nn au/7 /'Xc rj!z)) Je/Vln �p��i QSSzfmc�: G 1 d �GRC�' �7Z 6 /2 0�>`. -5//x an - /03. 6 ? cu = /03.6/3 �6. 4� //7<17 L-3w > L 3(e o) G7dc/ 7/G,7GIl. Z• Odf ref Ire-d ddeP��i ;'erB D U/f z /s less17uir r� ui✓�lG '// /OD. D��Z; ? d � o� fiord 7� no�sr��i�i«� vGGot0.T1q-1194b3Ms)m I lhdit Irc..Gmbh ,01471.Ta bOx R✓JISM WE Id i}Sd ,rob-ZZ5-00/ 1�rPcaw,nod 6n,i'7'f BAIMA & HOLMBERG, INC. SHEET NO. OF 100 Front Street South CALCULATED BY DATE ISSAQUAH, WASHINGTON 98027.3817 � �—� (206) 392.0250 CHECKED BY DATE SCALE �O..GfCIL`I'M//j�/' ��je G7//Y1G/']J/OYJ�S /7C[G7�G4 Or, Ac ✓G 14/)-c4r 5L/�CtPG are we w/ �olac I-or, ':w „��u�c>l�fi�' CcP/r,q fJ�v'VSIde ull7d ><17e X)la/dc pl/i a O /�n✓I y> a/o�Jc w.// e uct/ /2' or/ Pl�el 7%C 001?d. (wt x (2wf2y� /oa.D�l Z a.,GL ul= /v oOf3 = /rlCrc (orc o scff�ry�oy,c i /2- —✓Z`Z � i/m(f WRen �)�I f''O resscs 2• d ,(eef frfou� /� s/� (��radc , �ea/va��Lo/u>< 6o�a/rra .-�iorJ vor�d n� Cls � G�O/J7)/J GteS/ QOv�s7YucT yO VD1 TzOr1 cJ ar) , �cr sk vaogcrx'-ilsspxsr.n�sm.r�v,mm®®s�.,amm.ww.oun ro aa„vxa�rou ma ianmmN JOB if15-U ram, reC'r (rem e r BAIMA & HOLMBERG, INC. SHEET NO. OF 100 Front Street South CALCULATED BY sz/f// DATE ISSAQUAH, WASHINGTON 98027-3817 (206) 392.0250 CHECKED BY DATE / 1 // SCALE i inch_ �cs2'in�ei�J �Gr�cL ( >�`lttse 'L� cr/r��e Tile C1✓CCC o,� �hi[-5��/s lGrr�cr ��1Cin ��Q�r�s !ir�� MalI /f� Peres/ C7 �cc�/rr�!/Q.�fPo�c[ u��ll he rc1ur;-c4 . ��5/1�Q. 15rne1 (aun7 u��C� c Gf�i��ci csrgh /�04aC0 N �%nt�i�>L� �..�cfinJP.if ' d�D✓'a4fc vo �uniC = Vs�� = Lsc� �[fovg- Tx /x L SX C V w P/� U ZJ = 0,.43 6 / 7°o J�oPc £ y OL.F ire 7� 1e �1 yB� C'V= Plz ~ / 3 rli >oo��� '�/ode ), Aed = </0-0)(0.37)('0.33)C / a)l/.3) _ / 62 rc Ls,,I -/ZiX- 4eLt vjlAeU = 6.bGG r147" /88. 0 C'•fF -Ye�c��rc�/ PcnO Li YN-isnoe snens ASn rytl�®®M.,6Mm.Wa.010f.roUd AIOM 10LL HEF droffidtl0 . . JOB %rYJ-UU/ 'PP/J ul(J OF /G t— BAIMA & HOLMBERG, INC. SHEET NO. 100 Front Street South CALCULATED BY c5i-147 DATE 4 r ISSAQUAH, WASHINGTON 98027.3817 (206) 392.0250 CHECKED BY DATE SCALE 1�0 area lui �e CBBI/�3 = 62. 67 1 63 ' (hof us /7 67 ar 63 ' </CX�YC o �i/7�Pn.SlOr7s � SC'Gt'i.Y7Pnj 3TDYCl �Jc %� ,. al? udcli/J6r>al ✓caulr-ed- drI211/ a. 8 ( rauel P{ ro rs) 30 - Yy01500 o. Dig A �/l< grr)aan � /�l�/� ✓Gf n p�/ C'O P��i C ev�/i f Gt/G S G(i5 �e� . 7C = 5 00/6 0 /. 5i3� = -. 83 rnir7 /' br . = w�qr - Z '/�/_ ; -.6r 641 cia = 2. yy(sfr3) 0. 7595 079 VIIOWti}p1.113Mb 51n61 p3-I IPatleA�®aMc,f+M.Wl.OIQI IoONerRpM lOILiPEF Ib0.m-WEp • JOB—;6�3- fU%['' -!•/ BAIMA & HOLMBERG, INC. SHEET NO. OF 100 Front Street South CALCULATED BY DATE ISSAQUAH, WASHINGTON 98027-3817 (206) 392-0250 CHECKED BY DATE SCALE ���C�/� �G�i GFc� //✓cli . /7_< u�rcG� —�S'f7) = /25d�l�ia� �ssun�irj� �. �ra/t,�c�oicl' s=/�,pcd �>onrC' w/�.rls/pc /�lCrc �0✓ r GIi/Y7e/ Dior s O! �JGn�:is /701 ad ur7tG . /o �e%rn-�ir,e �/�c �mrnsior�s r�«c{�ec��or �je rc aired s�r�uee area- we will �90/ve Or •lti • �GviG����• �c�in���je /o c c�r7c/ fLic d= 5. 0 c� {�i� /P•z 11i a /hc fide, a c ��ua�il & f 30� X (zkl f 30 _ /3, Z 88 sic: Clad 6 cJ (66 -1s0) k (2(66)f.30) _ /6-/55'?,0 Leis wee a sma // `cd" urj// rvark =7 60 (2�'60) /.3r 500. O /3288 PPAOUGI NII ISFgb EAehlE�'IIE�1®wM[..Giobn.Ahv Ullrl iopEn RIpRF IOLL FREEI IOPYi5AB0 roe �T BAIMA & HOLMBERG, INC. SHEET NO. OF / q 100 Front Street South CALCULATED BY C7+-�/ DATE ISSAQUAH. WASHINGTON 98027-3817 (206) 392.0250 CHECKED BY DATE SCALE / /S -4 15 � c�C O/ Y�C d r4 ii»r 17 f Pan Or L = /50 ' , h)= y0' = S.0 /rii s� rack 612,r5- rucT �'c�7intnf�oncz, Cin ii7s�li// si/!✓f J�qb�� �e��c ; �ncc �prGjecf is ea"7)10 Cr17 <Sfrrb���c P90DOCt M I%go swM)M I(PO )®:krt.stoat Wn 01171 toOMNmxF ML ME I-0WP15M JOB l' a BAIMA & HOLMBERG, INC. SHEET NO, OF 10 Front Street South CALCULATED BY ISSAQUAH, WASHINGTON 98027-3817 DATE (206) 392-0250 CHECKED BY DATE '7�� SCALE � t�SLNi7/i74 �O/�/WGZ�7 c /DD�c /2fi /X 511'7 /i>i17irr7 u n) -. 1plflu/rc wiG11� O s0 % SS/� u/Aiic'�Z iS �lc�t�er 7f7<!/J 7/7G G�C1ua/�mo =;• TlJcr�,ldre �GtliG�e �ni��6�a�I is o A- / KIOWCi401-I ISNk Slixb tOf-hEMEI®.x h..GMdl lbq.01(il.faGM R1DIAlOLLVRH IdOb}3GN0 RZA AGRA Inc. NE 122nd Way • Suite 100 (formerly Rittenhouse Zeman&Associates, Inc.l Kirkland,WA 98034.6918 Engineering &Environmental Services (206)820-4669 FAX (206)821-3914 25 May 1992 W-8298 Baima & Holmberg, Inc. 1505 Northwest Gilman Boulevard, Suite 7 Issaquah, Washington 98027 Attention: Ms. Sherrie McKinnon Subject: Summary of Infiltration Test Results Greenwood Memorial Funeral Home Renton, Washington Gentlemen/Madames: In accordance with the request of Sherrie McKinnon of Baima & Holmberg, Inc., we are pleased to present the results of infiltration tests conducted at the above referenced property. Four infiltration tests were performed in general accordance with the procedures listed in section 4.5.2 of the King County Surface Water Design Manual, at the approximate locations shown on the attached Site Plan. This infiltration test procedure consists of driving a 6-inch-inner-diameter section of pipe into the soil at test elevation a depth of 6 inches. The pipes were filled with water and allowed to presoak for a period of 4 hours before running the test. Following the saturation period, the pipes were filled to the top and the time required for the water to fall every inch, down to 6 inches below the top of the pipe, was recorded. The rates for each inch were the averaged over 6 inches to estimate the maximum infiltration rate for each test run. This process was repeated three times for each infiltration test and the average of the three tests were used to compute the maximum infiltration rates. Infiltration test INF-2 was terminated without refilling the pipe after the presoak period, due to the slow infiltration rate observed at the test location. The following table summarizes the subsurface infiltration test results at each test location. AGRA Earth&Environmental Group Baima & Holmberg, Inc. W-8298 25 May 1992 Page 2 Infiltration Test Results Test No. Approximate Test Soil Texture Class Field Infiltration King County Max Elevation (it) (U.S.D.A.) Rate (In/Min) Infiltration Rate (In/Min) INF-1 340 1. Coarse sands 0.758 0.333 = 0.6103 M I� or cobbles �N INF-2 339 4. Sandy loam 0.016 0.017 INF-3 340 1. Coarse sands 6.50 0.333 or cobbles INF-4 340 1. Coarse sands 6.29 0.333 or cobbles Backhoe test pits were excavated immediately adjacent to the infiltration test locations, terminating at least 4 feet below the test elevation. Interpretive logs of the soils encountered in the test pits are enclosed with this letter. Approximate test pit and infiltration test elevations were obtained by interpolating between contours shown on a site plan provided to us prior to our exploration program, and sighting to test locations with a hand-held optical level. Test locations were obtained by pacing from existing site features shown on the above referenced plan. Test locations and elevations should be considered accurate to the degree implied by the methods used. CONCLUSIONS As can be seen in the table presented above, several of the infiltration rates as determined by the field tests significantly exceed the maximum rates presented in Table 4.51A of the King County Surface Water Design Manual for the nearest corresponding soil type. The manual recommends that infiltration rates should not be significantly faster than those shown in Table 4.5.1A for the given soil texture class. Therefore, we recommend that an infiltration rate value no greater than 0.50 inches per minute be used for design of infiltration trenches in the area of our test locations INF-1, INF-3, and INF-4. The value of 0.017 inches per minute may be used for design of the infiltration trench in the area of our test location INF-2. L^ AGRA Earth&Environmental Group Baima & Holmberg, Inc. W-8P98 25 May 1992 Page 3 We appreciate the opportunity to be of service to you on this project, and would be pleased to conduct additional tests on this site N it becomes necessary at some future time. If you have any questions or require further information, please do not hesitate to call. Respectfully submitted, RZA AGRA, Inc. �7 A:Ze) SIN R. Jerry E. Peterson �7 SP g WAS Geological Engineer .` 2759 m msr q w SIONALE� Benjamin R. Weiss, P.E. exP:aEs 10121-)Z Senior Project Engineer -W z �, wnsyf�A� John E. Zipper, P.E. �� . Associate `:J;PInES 1 /2A1 93 Enclosure: Figure 1 - Site Location Map Figure 1a & lb - Site and Exploration Plan Test Pit Logs TP-1 through TP-5 Field Data Sheets cc: Evergreen Cemetery/David Combs L^ AGRA Earth&Environmental Group — CG. o=i > .Ern i �lnw tr � ! N `<y n 'r f S 2 LL C E n ET hi IE ST s < ME N 1E7 us n(n f •r t [Ir r EMSwG =y N : , 3� Iln3IT n > _ r ' 1- °•� E � ME IITn 3T ,<� �11 >� IOTN IL A k * ! 3 < ME . a pT r� Y = RECE- 0 80 160 "> pt" LM < ME SCALE IN FEET �$ _ —� - - Mf- - E - — — cr—a} Ell! G— Es °°• 9 '-; c::: j d ` 1a ME CT E �L 3 S1 ME 1 I fT "•7t ME &IH ME 7Tn ST ltH ME W z a > 7Tn _ w Ewa HE EjH O ME 7TN s'Ir T IfM Cr I E 2ME E > MEL � ST K a t S y f 1E. AV ME GG� R ' N TO IMP _ > } / enrav ST ' j rrcM f H Esr- PROPOSED MIAT fA-` r INFILTRATION TRENCH +AAM JUM ? C r SITE " c - -- --- - 16 / Iy Sm * / TP-4/I —� NF-4 LOCATION MAP I I :i F EGEND I ST PIT/INFILTRATION TEST NUMBER I MATE LOCATION I I I I Imo_ PRO GREENWOOD MEMORIAL FUNERAL HOME RENTON, WASHINGTON SITE & EXPLORATION PLAN 2 DRAWING BASED ON PLAN BY BAIMA & HOLMBERG.- FIGURE I R TEST PIT LOGS Depth (feet) Soil Classification W-8298 Test Pit TP-1 Approximate ground surface elevation: 344 feet 0.0 - 3.0 Loose, moist, tan grading to brown, moderately rooted, silty fine to medium SAND with trace to some gravel (Fill) 3.0 - 8.0 Medium dense,moist,tan-greywith rust mottling,mediumtocoarse sandyGRAVELwith trace cobbles and organics (roots) Test pit terminated at approximately 8 feet Moderate caving below 3 feet No seepage Adjacent to INF-1 Test Pk TP-2 Approximate ground surface elevation: 343 feet 0.0 - 8.0 Medium dense to dense, wet,light tan-grey top 1 foot, dark grey bottom 7 feet, silty fine to medium SAND with some gravel, trace coarse sand and organics, wood, plastic pipe (glacial till fill) Test pit terminated at approximately 8 feet No caving No seepage Adjacent to INF-2 Test Pit TP-3 Approximate ground surface elevation: 344 feet 0.0 - 5.0 Loose, damp top 1.5 feet grading to moist, light tan-grey, medium to coarse sandy GRAVEL 5.0 - 10.0 Loose, moist, grey, fine to coarse SAND with trace gravel Test pit terminated at approximately 10 feet Heavy caving throughout No seepage Adjacent to INF-3 W-8298 Test Pit Logs, Page 2 Deoth (feet) foil Classification Test Pit TP-4 Approximate ground surface elevation: 344 feet 0.0 - 3.0 Loose to medium dense, moist,grey,medium to coarse SAND with trace to some gravel 3.0 - 10.0 Loose, moist, grey, gravelly fine to coarse SAND, grading to sandy GRAVEL with depth Test pit terminated at approximately 10 feet Moderate caving throughout No seepage Adjacent to INF-4 Test Pit TP-5 Approximate ground surface elevation: 343 feet 0.0 - 8.0 Medium dense top 1 foot grading to loose, moist to wet, tan grading to grey, silty, gravelly fine to coarse SAND with trace cobbles, organics (branches and roots),asphalt chunks (Fill). Test pit terminated at approximately S feet Heavy caving below 1 foot No seepage Vicinity of INF-2 Date excavated: 20 May 1992 Logged by: JEP rt ;ucan" Ci o�0 C6Mc'TE,�'Y INFiLrQ�e��-7Es7s _ T�:s7• I Z 3 -- - _. 1 ' 27:/0 1 "13 5 I 120a6 I Zg; 3e 1 , 36:Zs i 2 45 sr. �— 1: 90l I 1; z5 : 36 1: 33 :30 1 : 41 : 36! — - „� (a i ) SO 39;551 : 42If : ($ 4 _ (a - - r� - �3I� Laas' ?' /�I.LfAliM.l 1}rt,W Yl �i 1. ./ f 1" I, I 1 rn��21?:F�• „e SA>vQ [ r, ■ NSQI M1tn i f l 9r.y To Or a +� LS �rcu 8� (�r�.ve � frece I' ��! YA",C( . � q � s — ��,t�P r`Al _ Li 4J ✓ i. .IoIm z> on 1 :;l _ IBC, �F1�ep •n^< V�S/7 r1��pp J /I M-. 1� i� ft, 'adiJ v-ts`•(3 �tau✓n ---�-- y 1i - -! ' ! � ' 00 If -7y p rc N r' --- — --_ _. 57s ' y2i4 vl .4Z , £ Sriz £ °5 :b).( f' oo1FZ ; L59' )2 :E -- y/zy O.: b/; £ ov: y ) .� �1 _._ . r -- o2 .ts, : bl .` shot £ e/•bl '.� OI! �1'•£-..°S = °N - -- _�. — -- ~ F — l I Via : :°ri� . •�_ _ -..- - - �.. Tan yr, (•<, IG j y/ IG CavYteawG S G'4.le If C l vvK5 CFi / t�H�e cs�6/er r— T��r hel&,v -1 F-br �jL�tl 3J 39106 -3( o a --- } a,I 31 ¢7lvol 3r4� a� 3tg4_o• !``- ',1 I 3i3R l0 3J44113',A7 ;05 r 2 3'3q ' LG : 3 ' 4o zer3' AIrr5' 10 : Ib !t 3 3'.ggJ2.6 ' ?: 4a ; ,u 3J42'Z3 ; 30 Z5 3 r3gr37'' 3)�{n: 44 3 AZ 7� 3$ 30 — - -- — — S 3 -3 97 3• 3i17 ; 40 ; 51, : 41 6 1 3 ;3q 5�' Alt: a5j j " 5o Sr15. 0o _ vy -rf4 e(_ -- 6( 3G " (9e�w Y�, rzr�, p_ -- (e- c¢ ,— rt `5 A-fV-0.wl _— h •) ` rJ �66&t j.�,r JSa• �—I`E unr }.. t J C �� 5rl't4j YI21,,I eq ult� � �\ - ,r` �n,raa,� �vsci aI—I1-1 ) ., .t RZA AGRA, Inc. Sui e51NE 00 122nd Way (formedyRittenhouseZeman&Assncetns, Inc J Kirkland, WA98034-6918 Engineering&Environmental Services (206)820-4669 FAX (206)821-3914 8 July 1992 W-5176 Baima - Holmberg 100 Front Street South Issaquah, Washington 98027-3817 Attention: Ms. Sherri McKinnon Subject: Scope of Work for Groundwater Monitoring Well Installation Greenwood Memorial Park Renton, Washington Dear Ms. McKinnon: In accordance with your request, RZA AGRA, Inc. is pleased to be of service to you in providing this scope of work for installing and sampling a groundwater monitoring well at the above mentioned site. This scope of work is based on our knowledge of the site conditions observed during previous work at the property and is intended to meet the requirements set forth in the City of Renton Plan Examiners Environmental Review Committee's item Number 5. The proposed boring would be located near the northwest corner of the site, as shown on the Site Plan, Figure 1. The groundwater monitoring well installation would consist of advancing boring to a depth of 35 to 40 feet below the ground surface by a environmental drilling firm under subcontract to RZA AGRA Inc. The boring would consist of advancing a 4-inch I.D. hollow-stem auger utilizing a truck-mounted drill rig- During the drilling process soil samples would be collected at an approximate depth interval of every 2 1/2 feet to 5 feet. The samples will be continuously logged by an experienced environmental geologist from our firm. The geologist will classify the subsurface materials, keep a detailed field log, and maintain custody of the recovered samples. Prior to initiating the boring, the drilling equipment and sampling tools will be cleaned, and sampling tools will be cleaned between sampling intervals After the boring is complete, a groundwater monitoring well would be installed in the boring. The monitoring well would consist of 2-inch inside diameter (I.D.) PVC with a slotted, 15-toot long well screen installed at a depth which intersects the groundwater table and allows for measurements of groundwater fluctuations. The screen would be surrounded by a silica sand filter pack and bentonite seals would be installed above the screened interval to prohibit surface water infiltration. At the surface, the well would be secured with a L, AGRA Earth&Environmental Group Baima - Holmberg W-5176 8 July 1992 Page 2 flush-mounted locking well cap clearly labeled "Monitoring Well"to avoid confusion with other utilities. The monitoring well would be purged, pumped or bailed for development, to provide a good hydrogeologic connection with the surrounding formation. After development, groundwater samples would be obtained from the installed monitoring well. Immediately prior to sampling, the well would be purged of approximately 3 to 5 well volumes of standing water in order to obtain a sample representative of the surrounding formation. Groundwater samples would be analyzed for total petroleum hydrocarbons by Ecology Method WTPH Method 418.1 modified, volatile organics by EPA method 8240, total and dissolved lead and chromium by EPA Method 7421, and turbidity. The findings of our well installation would be summarized in a written technical report presented to Greenwood Memorial Park and their agents. Our report would document the work performed and include the following: 1. The final boring log including the as-built diagram of the monitoring well; 2. A Site Location Map and a Site Plan with the monitoring well locations; 3. A summary table of analytical laboratory test results; 4. An interpretation of the findings of the study. RZA AGRA, Inc. is pleased to have the opportunity to be of continued service to you on this project. If you have any questions or if we may be of service to you please feel free to contact us. Respectfully submitted, RZA��A/�GRRAInc. WTyg U,I 4 Charles C. Cacek Envi ronmental Geologist David G. Cooper, P.G. Associate Environmental Geologist Enclosure: Figure 1, Site Plan L^ A G R A Earth&Environmental Group N 0 400 800 SCALE IN FEET N.E. 4th STREET (S.E.128th STREET) ui OFFICE PROJECT BOUNDARY znw z 111 -----, 1PB-1 Uj APPROXIMATE LIMITS OF GRAVEL PITS cc I OI I I I LLI — � I � � I Z MW-1 I / I LU I r MW-2 I LL— N.L.r 2nd STREET LEGEND PB 1 INDICATES PROPOSED BORING AND ® APPROXIMATE LOCATION MW-2 INDICATES MONITORING WELL NUMBER AND APPROXIMATE LOCATION RZA-AGRA W_ 1� GREENWOOD MEMORIAL PARK ENGINEERING&ENVIRONMENTAL SERVICES WD r�DESIGN GS KING COUNTY, WASHINGTON Sc � 11335 N.E. 122nd Way DRAWN DMW PROPOSED EXPLORATION PLAN Suite 100 DATE JUL 1992 Kirkland, Washington 98034-6918 SCALE NOTED FIGURE 1 Short Plat (SHPL# ) REQUEST FOR PROJECT# Prelim. Plat (PP# ) CAG# To: Technical Services Date 12 - 2 9- 9 2 WO# 8 -4 2.00 Green# 83611 From: Plan Review/Project Manager D a M r(/I G a reV Project Name G rlcnwob CGwrGf-6r)e Gr &,I&l PC — fi1( A,.J Je (70 dwAclns max) Description of Project: Ei If +WIa Pifis W;A CIlati Je; t , GonJfie" Ior " iu INe SX ,r1Lzm-r 7rW r"„C,4 I"'Gcer" {r,t 214-I„c(,C Spar., lihe- wk;(,h serve-r 'rlw aA .r')'m 4hn'!3 'iD '� Gi J"t. Circle Size of Waterline: 8" 10" 12" Circle One: New or Extension Circle Size of Sewerline: 8" 10" 12" Circle One: New or Extension Circle Size of Stormline: 12" 15" 18" /.r 24" Circle One: New or Extension Address or Street Name(s) 350 r I o p ro Avt. NE Dvlpr/Contractor/Owner/Cnslt ow v r - service- CorAVY,Ct *0" (70 dxa—a max) Check each discipline involved in Project I / Ltr Drwgg # of sheets per discipline (9 Trans-Storrs _�owig Cedar Rlyte Nsin ✓✓ 7 (Roadway/Drainege) (Off site improvementsxinclude basin name) — — (include TESC sheets) ❑ Transportation (Siypaliulion Chamcliution,Lighting) ❑ Wastewater (Sanitary Sewer Main)(include basin name) ❑ Water (Maim,Valves,Hydrants) (Include composite&Horimntal Ctrl Sheets) TS Use Only '! tstz k 4:v�' ! y -93 Approved by TSM Date: onns/misrA2-090.DOC/CD/bh