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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 />J iTi- <br />I— 4" SOLID PVC <br />w SUBDRAIN PIPE <br />S=1% MIN <br />-III; <br />< = <br />o ILII <br />-ILII <br />4" PERFORATED PVC PIPE <br />TO DIFFUSE STORM WATER <br />(HOLES FACE DOWN) <br />NOTES: <br />I <br />BUBBLE UP <br />5" SQUARE GRATE NDS <br />GRATE OR EQUAL <br />4" SOLID PVC <br />SUBDRAIN PIPE <br />Del <br />- <br />-11 I I I�I I I -III I I 1=III I I I I I I 1=11 EI <br />PER SHEET GP -1 <br />INFILTRATION TRENCH <br />NOT TO SCALE <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 />J. CONTRACTOR TO RIP BOTTOM OF TRENCH. <br />PLANTING IN TRENCH AREA <br />PER NOTE 2, THIS SHEET. <br />NATIVE SOIL <br />1LE FILTER FABRIC <br />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 />�i i I I A 18 IF <br />1244 WESTWOOD STREET <br />CITY OF REDWOOD CITY SAN MATEO COUNTY CALIFORNIA <br />DATE: SEPTEMBER 11, 2020 SCALE: NOT TO SCALE <br />PAGE20F2 <br />CbgSAN (925)866-1322 <br />SACRAMENTO <br />O (916) 3]5-18]] <br />�GD NDc CDM <br />CIVIL ENGINEERS • SURVEYORS • PLANNERS <br />F:13085-000\REDWOOD CITY91244 WESTWOOD STACADIEXHIBITSU(B-EXHIBIT B_08M_1244 WESTWOOD ST.DWG <br />ATTY/AGR.2021.029/SF20G, LLC (1244 Westwood St- STMMA) (Page 10 of 13) <br />