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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 />LLJ 1=1 <br />=III= <br />CD <br />Iii <br />1--- 4" SOLID PVC <br />LE SUBDRAIN PIPE <br />Q S=1% MIN <br />LoQf <br />i <br />Ln <br />Q <br />� J _ <br />iI I <br />CD =D <br />cy <br />cif <br />�I �Of <br />l� <br />LLJ <br />Cy I_=1 <br />4" PERFORATED PVC PIPE <br />TO DIFFUSE STORM WATER <br />(HOLES FACE DOWN) <br />NOTES: <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 />X J <br />' <br />-Ill- <br />-I�I— <br />i� 11=1 I IY 411 I I�� I i=l 1 I =1TII I I—III i I I—I 1 I <br />111=I 11=1 I I-11 <br />-,, Ifni,Ili,�If1I111i�1i,IfiiILlllllfilfll„III,. I�1 <br />PER SHEET GP -1 <br />INFILTRATION TRENCH <br />NOT TO SCALE <br />�. 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 />NATIVE SOIL <br />CEOTEXTILE 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 />2403 WHIPPLE AVENUE <br />CITY OF REDWOOD CITY SAN MATEO COUNTY CALIFORNIA <br />DATE; AUGUST 19, 2020 SCALE: NOT TO SCALE <br />PAGE 2 OF 2 <br />Cb <br />SAN (925) 866-0322 <br />SACRAMENTO (976) 375-18771877 <br />9 <br />WWW CBANOG COM <br />CIVIL ENGINEERS • SURVEYORS • PLANNERS <br />F:13085-000\REDWOOD CITY12403 WHIPPLE AVEIACADIEXHIBITSIXB-EXHIBIT B 0&M.DWG <br />ATTY/AGR.2020.223/SF19G, LLC (2403 Whipple Avenue) (Page 10 of 14) <br />