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2-4" COBBLES AROUND <br />BUBBLE UP GRATE <br />BIORETENTION SOIL MIX <br />PER SAN MATEO COUNTY <br />WATER POLLUTION PREVENTION <br />PROGRAM C.3 REGULATED <br />PROJECTS GUIDE APPENDIX K. <br />loc <br />4" SOLID PVC <br />LJ SUBDRAIN PIPE <br />S=1% MIN <br />o <br />I ~ <br />C3 <br />LJ III <br />4" PERFORATED PVC PIPE <br />TO DIFFUSE STORM WATER <br />(HOLES FACE DOWN) <br />BUBBLE UP <br />5" SQUARE GRATE NDS <br />GRATE OR EQUAL <br />4" SOLID PVC <br />SUBDRAIN PIPE / <br />PER SHEET GP -1 <br />INFILTRATION TRENCH <br />NOT TO SCALE <br />NOTES: <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 />OTEXTILE FILTER FABRIC <br />IRAR 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 />259 KING STREET <br />CITY OF REDWOOD CITY SAN MATEO COUNTY CALIFORNIA <br />DATE: SEPTEMBER 22, 2020 SCALE: NOT TO SCALE <br />PAGE 2 OF 2 <br />Fcbg SAN MENT (925) 866-0322 <br />SACRAMENTO (9'16) 375-1877 <br />NNJW.C6 NOG.COM <br />CIVILENGINEERS - SURVEYORS - PLANNERS <br />F:13085-0001REDWOOD CITY09 KING STIACAMEXHIBITSIXB-EXHIBIT B_0&M_259 KING ST.DWG <br />ATN/AGR.2021.021/SF20G, LLC (Page 10 of 13) <br />