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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 <br />0 <br />z <br />Lu <br />¢ <br />Lu <br />lk�� <br />C>~ <br />wr <br />J <br />CV ¢ <br />Un or <br />w <br />0 <br />U-1 <br />o' <br />cr <br />w <br />F i l <br />4" SOLID PVC <br />SUBDRAIN PIPE <br />S=1% MINI <br />-III- <br />4" PERFORATED PVC PIPE' <br />TO DIFFUSE STORM WATER <br />(HOLES FACE DOWN) -tl <br />NOTES: <br />1 ;k� <br />BUBBLE UP <br />5" SQUARE GRATE NDS <br />GRATE OR EQUAL <br />4" SOLID PVC <br />SUBDRAIN PIPE <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 />1 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 />REVISED <br />EXHIBIT B <br />1793 ROSEMARY LANE <br />CITY OF REDWOOD CITY SAN MATEO COUNTY CALIFORNIA <br />DATE: MAY 17, 2021 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 1 W W W.CBANDG.COM <br />CIVIL ENGINEERS • SURVEYORS • PLANNERS <br />F:13085-000\REDWOOD CITY11793 ROSEMARY LNIACADIEXHIBITSIXB-EXHIBIT B O&M.DWG <br />ATTY/AGR.2021/Amend No. 1/SF19G, LLC (Page 5 of 9) <br />