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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 />w Ii -i <br />-If1= <br />i=1 <br />4" SOLID PVC <br />LE SUBDRAIN PIPE <br />Q S=1% MIN <br />LTJ _rF <br />J <br />in <br />cy <br />=1 f 1= <br />Ed <br />I <br />?III <br />w <br />-I- <br />cy Ed <br />0-1 J I I- <br />4" PERFORATED PVC PIPE <br />TO DIFFUSE STORM WATER <br />(HOLES FACE DOWN) <br />VOTES: <br />BUBBLE UP <br />5" SQUARE GRATE NDS <br />GRATE OR EQUAL <br />4" SOLID PVC <br />SUBDRAIN PIPE <br />clj <br />IlTi�i���llll� IIS <br />PER SHEET GP -1 <br />INFILTRATION TRENCH <br />NOT TO SCALE <br />I. 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 />L 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 />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 />SAN RAMON (9) 866-0322 <br />cbg ISACRAMENTO (91616) 375-18771877 <br />VJW W.C[3ANDG. COM <br />CIVIL ENGINEERS • SURVEYORS • PLANNERS <br />F:13085-000\REDWOOD CITY1125 KING STIACADIEXHIBITSIXB-EXHIBIT B_0&M.DWG <br />ATTY/AGR.2020:258/SF19A, LLC (Page 10 of 14) <br />