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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 />-III= <br />I <br />4" SOLID PVC <br />w SUBDRAIN PIPE <br />Q S=1% MIN <br />�n ~ <br />,I; r <br />I ~ <br />�r <br />Or <br />w <br />3- VIII <br />0 <br />bi 1=1 <br />Or <br />bi <br />III <br />-1 I I - <br />BUBBLE UP <br />5" SQUARE GRATE NDS <br />GRATE OR EQUAL <br />4" SOLID PVC <br />SUBDRAIN PIPE <br />11III I gin _ <br />4" PERFORATED PVC PIPE=' I I I_ —_—_--_--_— <br />TO DIFFUSE STORM WATER I=III __ <br />III—III—III III I—I I I—III—III—I I E <br />(HOLES FACE DOWN) -III—I I —III—III_i i I=I I—i I—III—III—I I—i I—I <br />PER SHEET GP -1 <br />INFILTRATION TRENCH <br />NOT TO SCALE <br />I 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 />UI GEOTEXTILE FILTER FABRIC <br />I I (MIRAFI 700 OR EQUIVALENT) <br />III—� I1=` 4" PERFORATED <br />—III=III PVC RISER <br />I 1 -I I�—� AGGREGATE ROCK LAYER <br />III—III= 1.5" TO 2.5" DIAMETER <br />III = CAP 4" RISER PIPE AT <br />BOTTOM OF GRAVEL LAYER <br />BEDDING SAND <br />EXHIBIT B <br />125 KING STREET <br />CITY OF REDWOOD CITY SAN MATEO COUNTY CALIFORNIA <br />DATE: AUGUST 25, 2020 SCALE: NOT TO SCALE <br />PAGE 2 OF 2 <br />C b SAN SACRAMENTO <br />(916) 866-0322 <br />1877 <br />SACRAMENTO (916) 375-1877 <br />9 W W W.CBANDG.COM <br />CIVIL ENGINEERS • SURVEYORS • PLANNERS <br />F:13085-0001REDWOOD CITY1125 KING STIACAMEXHIBITSIXB-EXHIBIT B_0&M.DWG <br />ATTY/AGR.2020.258/SF19A, LLC (Page 10 of 14) <br />