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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 />CD <br />�`I11i <br />a <br />4" SOLID PVC <br />w <br />SUBDRAIN PIPE <br />Q <br />S=1% MINI' <br />z� <br />_! I I=1 11. <br />o <br />C <br />01 <br />r—III=II <br />< <br />x <br />o <br />I—I I I <br />w <br />BUBBLE UP <br />5" SQUARE GRATE NDS <br />GRATE OR EQUAL <br />4" SOLID PVC <br />SUBDRAIN PIPE <br />4" PERFORATED PVC PIPE <br />0-11iEl <br />1 - Tr -i`! -� =C� _- <br />1 11 <br />TO DIFFUSE STORM WATER I ISI l I 11 -i I I�I I i 111—f 11=I f I—III-1 ISI l I -I I E <br />(HOLES FACE DOWN) -I I I=I f =I 11I —I I I -I I—I 11Ei 1 ISI 11�=�1 I 1=Ji I i 111 <br />,III_ Ilf„ IIII1kI'`�'iiIIII1IIIIIIIIIIIIIIIIIIII'—'iI11IIf� ISI <br />PER SHEET GP -1 <br />INFILTRATION TRENCH <br />V -/I IV - <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 />PER NOTE 2, THIS SHEET. <br />NATIVE SOIL <br />�I GEOTEXTILE FILTER FABRIC <br />M(MIRAFI 700 OR EQUIVALENT) <br />I!� 4" PERFORATED <br />=1IIIII PVC RISER <br />I! AGGREGATE ROCK LAYER <br />=11 <br />I 1.5" TO 2.5" DIAMETER <br />11- <br />e-l�,Ej <br />CAP 4" RISER PIPE AT <br />BOTTOM OF GRAVEL LAYER <br />BEDDING SAND <br />EXHIBIT B <br />163 IRIS STREET <br />CITY OF REDWOOD CITY SAN MATEO COUNTY CALIFORNIA <br />DATE: APRIL 4, 2024 SCALE: NOT TO SCALE <br />PAGE 2 OF 2 <br />CbgSAN RAMON (925) 866-0322 <br />ROSEVILLE (916) 375-1877 <br />11 NNVW-CBANDG.COM <br />CIVIL ENGINEERS SURVEYORS • PLANNERS <br />R: 3085-0001REDWOOD CITY1163 IRIS STIACAMEXHIBITSIXB-EXHIBIT B_08M 163 IRIS ST.DWG <br />ATTY/AGR.2025.179/Norcal Home Builders (163 Iris St) (Page 13 of 16) <br />