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6.A. - Page 53 of 69 <br />OVERFLOW <br />DRAIN <br />SEE NOTE 5 <br />(TYP) <br />STORM DRAIN PIPE <br />(SIZE PER PLAN) <br />SEE PLAN <br />CLEANOUT— <br />(CHRISTY FOB) <br />TOP OF BIORETENTION <br />BASIN <br />DEPTH VARIES, M <br />VARIES (6" MIN.) SEE PLAN <br />18" TREATMENT SOIL 4" SOLID PVG PIPE �✓: <br />INFILTRATION RATE <br />:5 TO 10 1N/HR <br />(SEE NOTE 1) c <br />12 -MIN CL <br />NATIVE OR IMPORTED FILL— <br />SCARIFIED AND COMPACTED <br />4" PERFORATED UNDERDRAIN <br />(SLOPE AT 0.5%MIN.) SEE <br />UTILITY PLAN FOR LOCATION OF <br />PIPE. <br />LONGITUDINAL SECTION <br />N.T.S. <br />BIORETENTION DETAIL LONGITUDINAL <br />N.T.S <br />NOTES <br />1. TREATMENT SOIL MIX SHALL MEET REQUIREMENTS AS SPECIFIED IN THE SAN MATEO COUNTYWIDE WATER POLLUTION <br />PREVENTION PROGRAM (SMCWPPP) C.3 STORMWATER HANDBOOK DATED 2014 IN APPENDIX K. <br />2. THE BIOTREATMENT SOIL MIX USED IN ALL BIORETENTION AREAS SHALL COMPLY WITH THE SPECIFICATIONS IN ATTACHMENT L <br />OF THE RWQCB MUNICIPAL REGIONAL PERMIT. IF THE BIOTREATMENT SOIL MIX SUPPLIER IS INCLUDED ON SMCWPPP'S <br />"BIOTREATMENT SOIL MIX SUPPLIER LIST" (SUPPLIER LIST), A BIOTREATMENT SOIL MIX SUPPLIER CERTIFICATION STATEMENT <br />(CERTIFICATION STATEMENT) SHALL BE COMPLETED BY THE SUPPLIER AND SUBMITTED TO THE CITY/PROJECT ENGINEER A <br />MINIMUM OF 14 DAYS PRIOR TO DELIVERY OF THE MATERIAL TO THE JOB SITE. IF THE BIOTREATMENT SOIL MIX SUPPLIER IS <br />NOT INCLUDED ON THE SUPPLIER LIST, A BIOTREATMENT SOILS MIX VERIFICATION CHECKLIST (VERIFICATION CHECKLIST) SHALL <br />BE COMPLETED BY THE SUPPLIER AND SUBMITTED TO THE CITY/PROJECT ENGINEER A MINIMUM OF 14 DAYS PRIOR TO <br />DELIVERY OF THE MATERIAL TO THE JOB SITE. COPIES OF THE SUPPLIER LIST, CERTIFICATION STATEMENT AND VERIFICATION <br />CHECKLIST CAN BE DOWNLOADED FROM THE COUNTYWIDE PROGRAM'S WEBSITE AT HTTP://FLOWSTOBAY.ORGfP-RIVATEND <br />3. PERMEABLE DRAIN ROCK SHALL BE CLASS II, PER CALTRANS STANDARD SECTION 68-1.025. THE MATERIAL SHALL BE WASHED <br />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 />1730 N. FIRST ST. Subject EXHIBIT B2 <br />SUITE 600 BIORETENTION BASIN DETAIL <br />SAN JOSE, CA 95112 Job No. 20166162 <br />408-467-9100IBKF By Date 06-25-19 Chkd. <br />El, ■=-'- 11Ptw � 4a8-467-9199 (FA4age 4 of 7 SHEET EX—B2 OF <br />REV: 07-25-19 DZ <br />57 <br />