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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 />_z <br />a =111- <br />Lv � I <br />BUBBLE UP <br />5" SQUARE GRATE NDS <br />GRATE OR EQUAL <br />4" SOLID PVC <br />SUBDRAIN PIPE <br />4" PERFORATED PVc PIPET III ° �- <br />TO DIFFUSE STORM WATER� I <br />(HOLES FACE DOWN) 1 .III <br />S I I �1 I I I I I l l—III IIs1 I � I I_-1 i t i I= <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 />RAFT 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 />3070 STERLING WAY <br />CITY OF REDWOOD CITY SAN MATEO COUNTY CALIFORNIA <br />DATE: AUGUST 2,2024 SCALE: NOT TOSCALE <br />PAGE 2 OF 2 <br />CbC� SAN RAMON (925)866-0322 <br />ROSEVILLE (916) 375-1877 <br />�w IeA�..1,M <br />CIVIL ENGINEERS - SURVEYORS • PLANNERS <br />F:\3085-0001REDWOOD CITYA3070 STERLING WAYIACAMEXHIBITSXB-EXHIBIT B_O&M_3070 STERLING WAY.DWG <br />ATTYIAGR.2025.181 ISF21 G, LLC (3070 Sterling Way) (Page 13 of 16) <br />