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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 />�- Ii -_I I <br />—� I I— <br />J <br />4" SOLID PVC <br />Eli SUBDRAIN PIPE <br />Mi <br />S=1% MIN <br />Q _ <br />�n <br />_I~ <br />J <br />L' QOf <br />Uj <br />—Ill <br />CY <br />�I <br />111- <br />I—� I <br />_tL <br />w <br />0 =L <br />cif <br />4" PERFORATED PVC PIPE I <br />TO DIFFUSE STORM WATER' I—II <br />(HOLES FACE DOWN) A I I= <br />PER SHEET GP -1 <br />BUBBLE UP <br />5" SQUARE GRATE NDS <br />GRATE OR EQUAL <br />4" SOLID PVC PLANTING IN TRENCH AREA <br />SUBDRAIN PIPE PER NOTE 2, THIS SHEET. <br />F <br />N <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 />flfi,�1-11�`. <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 />1128 MCKINLEY STREET <br />CITY OF REDWOOD CITY SAN MATEO COUNTY CALIFORNIA <br />DATE: AUGUST 24, 2020 SCALE: NOT TO SCALE <br />PAGE 2 OF 2 <br />SAN RAMON (925) 666-0322 <br />jCbgj SACRAMENTO (916) 375-1677 <br />W W W.CBANDG.COM <br />CIVIL ENGINEERS • SURVEYORS • PLANNERS <br />813085-0001REDWOOD CITY11128 MCKINLEY STIACAMEXHIBITSIXB-EXHIBIT B_0&M.DWG <br />ATTY/AGR.2020.224/SF19G, LLC (1128 McKinley Street) (Page 10 of 14) <br />