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6.1.B. - Page 16 <br />VARIES <br />SEE PLAN <br />CLEANOUT— <br />(CHRISIY FOS) <br />8"DIAM. OVERFLOW DRAIN <br />TOP OF BIORETENTION <br />BASIN <br />DEPTH VARIES, <br />1 6" SEE PLAN <br />,18" TREATMENT SOIL <br />INFILTRATION RATE 5 T0'10- <br />%IN/HR (SEE NOTE 1)' <br />1 <br />r <br />LL Tl DRAIN ROCK <br />:;��- <br />1, 0 n <br />SEE NOTE 5--"7 <br />\ <br />NATIVE OR IMPORTED FILL— <br />STORM DRAIN PIPE SCARIFIED AND COMPACTED <br />(SIZE PER PLAN) <br />4" SOLID PVC PIPE <br />40 MIL NON—PERMEABLE <br />LINER ON SIDES (TYP.) <br />4' PERFORATED UNDERDRAIN <br />(SLOPE AT 0.5%MIN.) SEE <br />UTILITY PLAN FOR LOCATION OF <br />PIPE, <br />BIORETENTION SECTION (LONGITUDINAL) - <br />NITS <br />1. TREATMENT SOIL MIX SHALL MEET REQUIREMENTS AS SPECIFIED IN THE SANTA CLARA VALLEY URBAN RUNOFF <br />POLLU11ON PREVENTION PROGRAM C,3 STORMWATER HANDBOOK DATED 2016 IN APPENDIX C. <br />2. THE BIOTREATMENT SOIL MIX USED IN ALL BIORETENTION AREAS SHALL COMPLY WITH THE SPECIFICATIONS IN <br />ATTACHMENT L OF THE RWQCB MUNICIPAL REGIONAL PERMIT. IF THE BIOTREATMENT SOIL MIX SUPPLIER IS INCLUDED ON <br />SCVURPPP'S "BIOTREATMENT SOIL MIX SUPPLIER LIST" (SUPPLIER LIST), A BIOTREATMENT SOIL MIX SUPPLIER <br />CER11FICATION STATEMENT (CERTIFICATION STATEMENT) SHALL BE COMPLETED BY THE SUPPLIER AND SUBMITTED TO <br />THE CITY/PROJECT ENGINEER A MINIMUM OF 14 DAYS PRIOR TO DELIVERY OF THE MATERIAL TO THE JOB SITE. IF THE <br />BIOTREATMENT SOIL MIX SUPPLIER IS NOT INCLUDED ON THE SUPPLIER LIST, A BIOTREATMENT SOILS MIX VERIFICATION <br />CHECKLIST (VERIFICATION CHECKLIST) SHALL BE COMPLETED BY THE SUPPLIER AND SUBMITTED TO THE CITY/PROJECT <br />ENGINEER A MINIMUM OF 14 DAYS PRIOR TO DELIVERY OF THE MATERIAL TO THE JOB SITE. COPIES OF THE SUPPLIER <br />LIST, CERTIFICATION STATEMENT AND VERIFICATION CHECKLIST CAN BE DOWNLOADED FROM THE COUNTYWIDE <br />PROGRAM'S WEBSITE AT HTTP: //WWW.SCVURPPP—W2K.COM/ND__WP.SHTML <br />3. PERMEABLE DRAIN ROCK SHALL BE CLASS Il, PER CALTRANS STANDARD SECTION 68-1.025. THE MATERIAL SHALL BE <br />WASHED AND FREE FROM CLAY OR ORGANIC MATERIAL. <br />4. PERFORATED PIPE SHALL BE SOLVENT WELD PVC SDR 35 (OR APPROVED EQUAL) WITH PERFORATIONS FACED DOWN. <br />LOCATION OF THE PIPE VARIES, SEE PLAN. <br />5. FOR ANY LINER PENETRATIONS, RADIAL—CUT THE LINER FOR PIPE. MASTIC AND SEAL WITH PIPE CLAMP TO INSURE <br />WATER—TIGHT SEAL. <br />1. + <br />MR B R F IYOEAROS <br />1NGINRRIT�� <br />17-30 N. FIRST E M e Inc. <br />SA14 JOSE, CA 95112 www.bkf.com <br />EXHIBIT B2 <br />BIORETENTION BASIN DETAIL <br />Drawn: KH Checked: JM Approved: JM <br />Job No.: 20176020 Date: 3/23/2018 <br />