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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 />=I I i, � I l I l—III 1.11=Ill= <br />o <br />z <br />4" SOLID PVC <br />L <br />SUBDRAIN PIPE -! <br />c,,, <br />a <br />S=1% MIN <br />CD <br />W <br />~ <br />� I I- <br />W <br />Ui <br />W <br />J <br />cn <br />cy <br />_ <br />-I I !—I I� <br />Lj <br />w <br />11 <br />lII-- <br />o <br />:1 �1-1 I <br />I—III- <br />cy <br />Li <br />=1 I �- <br />�1[I-ll, <br />4" PERFORATED PVC PIPE <br />TO DIFFUSE STORM WATER; J=I ! <br />(HOLES FACE DOWN) =illi <br />NOTES: <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 />3. CONTRACTOR TO RIP BOTTOM OF TRENCH. <br />PLANTING IN TRENCH AREA <br />PER NOTE 2, THIS SHEET. <br />!y! I !EES ! <br />E!IF,!i!_ <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 />EXHIBIT B <br />158 MYRTLE STREET <br />CITY OF REDWOOD CITY SAN MATEO COUNTY CALIFORNIA <br />DATE: FEBRUARY 2, 2021 SCALE: NOT TO SCALE <br />PAGE 2 OF 2 <br />SAN RAMON (925) 866-0322 <br />cbg SACRAMENTO (916) 375-1877 <br />N/WW,CBANDG,COM <br />CIVIL ENGINEERS • SURVEYORS • PLANNERS <br />F:13085-000\REDWOOD CITY1158 MYRTLE S-RACADIEXHIBITSIXB-EXHIBIT B 0&M 158 MYRTLE ST.DWG <br />ATTY/AGR.2021.043/SF21A, LLC (158 Myrtle STMMA) (Page 10 of 13) <br />