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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 1 <br />PROJECTS GUIDE APPENDIX K. <br />—III=1 I I'—"III—I I 1=1 I i—I I • ' : • - :: `; : '• . ' <br />L=11! 1!=1! <br />�I =i 1 I -I f I� 11=1 I I -I I• <br />I I`I I I-1 11 <br />�—'IiJI�I— <br />=I I I=11 <br />4" SOLID PVC I <br />Lz SUBDRAIN PIPE = 1 <br />Q S=1% MINco <br />1i <br />=III- II <br />J_ <br />o. <br />:!Il--I� <br />LLJ <br />Q <br />III- <br />=IIS-��II <br />4" PERFORATED PVC PIPER <br />TO DIFFUSE STORM WATER = <br />(HOLES FACE DOWN)'----]' I <br />BUBBLE UP <br />5" SQUARE GRATE NDS <br />GRATE OR EQUAL <br />4" SOLID PVC <br />SUBDRAIN PIPE <br />I I'�I � i•"'"•I I I• --'`I 11-1 11—'I I r'—t ! I" -"'I I I'"'L� � <br />PER SHEET GP -1 <br />INFILTRATION TRENCH <br />NOT TO SCALE <br />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 />SEE NOTE 2, THIS SHEET, <br />I I,. -- <br />NATIVE SOIL <br />LI GEOTEXTILE FILTER FABRIC <br />rj <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 />751 RUBY STREET <br />CITY OF REDWOOD CITY SAN MATEO COUNTY CALIFORNIA <br />DATE: APRIL 30, 2021 SCALE: NOT TO SCALE <br />PAGE 2 OF 2 <br />c b SAN (925) 666-0322 <br />SACRAMENTO (916) 375-1877 <br />W W W.CBANDG.COM <br />CIVIL ENGINEERS • SURVEYORS • PLANNERS <br />F:13085-0001REDWOOD CITY1751 RUBY STIACAMEXHIBITSIXB-EXHIBIT B 0&M.DWG <br />ATTY/AGR.202 1 /Amend No. 1/SF20A, LLC (Page 5 of 9) <br />