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BUBBLE UP <br />2-4" COBBLES AROUND 5" SQUARE GRATE NDS <br />BUBBLE UP GRATE GRATE OR EQUAL <br />4" SOLID PVC PLANTING IN TRENCH AREA <br />BIORETENTION SOIL MIX SUBDRAIN PIPE PER NOTE 2, THIS SHEET. <br />PER SAN MATEO COUNTY <br />WATER POLLUTION PREVENTION 1 <br />PROGRAM C.3 REGULATED <br />PROJECTS GUIDE APPENDIX K. <br />A <br />I <br />Ilj �` 1fI1l111 NATIVE SOIL <br />Q 1.7d 1! <br />4" SOLID PVC_ I I I I 1 <br />w SUBDRAIN PIPE -III _ I!!II 1.GEOTEXTILE FILTER FABRIC <br />Q <br />S=1% MIN r j—f? (MIRAFI 700 OR EQUIVALENT) <br />w -111— i 1= ) t l=I I I I111 <br />P PERFORATED <br />Ln <br />J — _ VC RISER <br />-T=T -I 1 I. =1I ` AGGREGATE ROCK LAYER <br />1.5' TO 2.5" DIAMETER <br />7 I !' CAP 4" RISER PIPE AT <br />o I—I I =1 —I 11—III BOTTOM OF GRAVEL LAYER <br />:11 lam! 1I— <br />!-1 i 1= =111=11 I <br />�LTI=I <br />cm <br />4" PERFORATED PVC PIPET f 1111! — _ = BEDDING SAND <br />TO DIFFUSE STORM ATEf I II <br />1=1I <br />(HOLES FACE DOWN) l j I f 111—! 1�I C=��T=�(i I-1 11=1 f 1=��I !-3 I I—I I j-�I 1-1 I� <br />IL,jfl�illllll111''`�IIIIIIIIIl�lllllflil''"-`IIIMIIIl—!„ I+T�'' <br />PER SHEET GP -1 <br />INFILTRATION TRENCH <br />NOT TO SCALE <br />NOTES: <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 />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 />EXHIBIT B <br />1793 ROSEMARY LANE <br />CITY OF REDWOOD CITY SAN MATEO COUNTY CALIFORNIA <br />DATE: AUGUST 19, 2020 SCALE: NOT TO SCALE <br />PAGE 2 OF 2 <br />SAN RAMON (925) 666-0322 <br />cbgSACRAMENTO (916) 375-1677 <br />WWW CBANDG COM <br />CIVIL ENGINEERS • SURVEYORS • PLANNERS <br />F:13085-000\REDWOOD CITY11793 ROSEMARY LMACAMEXHIBITSIXB-EXHIBIT B_0&M.DWG <br />ATTY/AGR.2020.220/SF19G, LLC (1793 Rosemary Lane) (Page 10 of 14) <br />