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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. y <br />0 <br />4" SOLID PVC <br />Lz SUBDRAIN PIPE <br />Q S=1% MIN <br />w =111W <br />o F- <br />-T <br />cy Ed <br />-I I I- <br />o I=1 <br />illl� <br />=1II. <br />4" PERFORATED PVC PIPE <br />TO DIFFUSE STORM WATER <br />(HOLES FACE DOWN) <br />=1 I -III -I l I -I I i.�T�l 11-I <br />III„il_I�III�If �flll�llll�lil� <br />PER SHEET GP -1 <br />BUBBLE UP <br />5" SQUARE GRATE NDS <br />GRATE OR EQUAL <br />4" SOLID PVC <br />SUBDRAIN PIPE <br />In <br />INFILTRATION TRENCH <br />NOT TO SCALE <br />NOTES: <br />, <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 />GEOTEXTILE 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 />EXHIBIT B <br />153 MYRTLE STREET <br />CITY OF REDWOOD CITY SAN MATEO COUNTY CALIFORNIA <br />DATE: SEPTEMBER 4, 2020 SCALE: NOT TO SCALE <br />PAGE 2 OF 2 <br />b SAN SACRAMENTO <br />(925) 375-0322 <br />1877 <br />4r SACRAMENTO (916) 375-1877 <br />W W W.CBANDG.COM <br />CIVIL ENGINEERS • SURVEYORS • PLANNERS <br />FM085-000kREDWOOD CITY1153 MYRTLE STIACADIEXHIBITSIXB-EXHIBIT B 0&M.DWG <br />ATTY/AGR 2020.210/SF19G, LLC (153 Myrtle St) (Page 10 of 14) <br />