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BIORETENTION SOIL MIX <br />PER SAN MATEO COUNTY <br />WATER POLLUTION PREVENTION <br />PROGRAM C.3 REGULATED <br />PROJECTS GUIDE APPENDIX K. <br />4" SOLID PVC <br />w SUBDRAIN PIPE <br />S=1% MIN <br />o � <br />� J I <br />Illi= <br />a <br />0 <br />� =1L <br />4" PERFORATED PVC PIPE <br />TO DIFFUSE STORM WATER <br />(HOLES FACE DOWN) <br />NOTES: <br />BUBBLE UP <br />5" SQUARE GRATE NDS <br />GRATE OR EQUAL <br />4" SOLID PVC <br />SUBDRAIN PIPE <br />i <br />PER SHEET GP -1 <br />INFILTRATION TRENCH <br />NOT TO SCALE <br />1. INFILTRATION TRENCH TO BE CONSTRUCTED PER <br />SAN MATEO COUNTYWIDE WATER POLLUTION <br />PREVENTION PROGRAM (SMCWPPP) C.3 REGULATED <br />PROJECT GUIDE SECTION 6.4. <br />2. APPROVED PLANTS FOR INFILTRATION TRENCH ARE <br />PER APPENDIX A OF THE SMCWPPP C.3 <br />REGULATED PROJECTS GUIDE. <br />3. CONTRACTOR TO RIP BOTTOM OF TRENCH. <br />PLANTING IN TRENCH AREA <br />PER NOTE 2, THIS SHEET. <br />NATIVE SOIL <br />1LE FILTER FABRIC <br />700 OR EQUIVALENT) <br />4" PERFORATED <br />PVC RISER <br />AGGREGATE ROCK LAYER <br />1.5 TO 2.5 DIAMETER <br />CAP 4° RISER PIPE AT <br />BOTTOM OF GRAVEL LAYER <br />BEDDING SAND <br />EXHIBIT B <br />1266 CONNECTICUT DRIVE <br />CITY OF REDWOOD CITY SAN MATEO COUNTY CALIFORNIA <br />DATE: DECEMBER 10, 2020 SCALE: NOT TO SCALE <br />PAGE2OF2 <br />SAN(926)866-0322 <br />SACRAMENTO (916)375-1877 <br />lNW ,CBANDG COM <br />CIVIL ENGINEERS • SURVEYORS • PLANNERS <br />F:13086-00MREDWOOD CITY11266 CONNECTICUT DRACAUIEXHIBITSOXB-EXHIBIT B_05M_1266 CONNED DGU I UR.UWG <br />ATNIAGR.2021.083ISF20A, LLC (1266 Connecticut Drive) (Page 10 of 13) <br />