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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 />4" SOLID PVC <br />w SUBDRAIN PIPE <br />a S=1% MIN <br />n o <br />VIII <br />� IMI <br />BUBBLE UP <br />5" SQUARE GRATE NDS <br />GRATE OR EQUAL <br />4" SOLID PVC <br />SUBDRAIN PIPE <br />I=1II II <br />4" PERFORATED PVC PIPE (VIII T1=� <br />TO DIFFUSE STORM WATER=III ( I -I I� I —I 11-4 1 I—I I I—I 11—I I I— (- <br />(HOLES FACE DOWN)(=III=III— <br />II .III VIII VIII VIII VIII VIII VIII ILII ILII (III <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 />;EOTEXTILE FILTER FABRIC <br />MIRAFI 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 />2761 OHIO AVENUE <br />CITY OF REDWOOD CITY SAN MATEO COUNTY CALIFORNIA <br />DATE: AUGUST 17, 2021 SCALE: NOT TO SCALE <br />PAGE 2 OF 2 <br />FM065-0001REDWOOD CITY12761 OHIO AVEIACADIEXHIBITSIXB-EXHIBIT 8 0&M_2761 OHIO AVE.DWG <br />ATTY/AGR.2021.320/SF21A, LLC (Page 10 of 13) <br />SAN RAMON (925) 866-0322 <br />SACRAMENTO (916)375-1877 <br />YVWVJ,CBANOG.COM <br />CIVILENGINEERS <br />e SURVEYORS - PLANNERS <br />FM065-0001REDWOOD CITY12761 OHIO AVEIACADIEXHIBITSIXB-EXHIBIT 8 0&M_2761 OHIO AVE.DWG <br />ATTY/AGR.2021.320/SF21A, LLC (Page 10 of 13) <br />