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ARROYO <br />LAGO <br />PROJECT SITE <br />A A <br />A A <br />BUSCH ROAD <br />EL <br /> <br />C <br />H <br />A <br />R <br />R <br />O <br /> <br />R <br />O <br />A <br />D <br />DMA 1 <br />B B <br />C1 <br />C1 <br />C2 <br />C2 <br />F:\3435-010\ACAD\TM\C5.2-ALT 2.DWG <br />JOB NO.: 3435-010 <br />VESTING TENTATIVE MAP <br />TRACT 8423 <br />OFFSITE GRADING AND DRAINAGE <br />PLAN AND STORMWATER <br />CONTROL PLAN <br />ARROYO LAGO <br />CITY OF PLEASANTON ALAMEDA COUNTY CALIFORNIA <br />SCALE: 1" = 100'DATE: JANUARY 2026 <br />3002001000 <br />CIVIL ENGINEERS SURVEYORS PLANNERS <br />SAN RAMON <br />WWW.CBANDG.COM <br />ROSEVILLE <br />(925) 866-0322 <br />(916) 788-4456 <br />SECTION A-A <br />SECTION B-B <br />DRAINAGE MANAGEMENT AREA SUMMARY <br />AREA ID IMPERVIOUS <br />AREA (SF) <br />PERVIOUS <br />AREA (SF) <br />EFFECTIVE <br />IMPERVIOUS <br />AREA (SF) <br />TREATMENT <br />AREA REQUIRED <br />(SF) <br />TREATMENT <br />AREA PROVIDED <br />(SF) <br />· <br />· <br />NOTES LEGEND <br />DMA 1 OF SHEETS <br />SHEET NO. <br />C5.2 <br />11 <br />SECTION C1-C1 <br />SECTION C2-C2 <br />LOW FLOW PUMP / DIVERSION STRUCTURE DETAIL <br />NOTES <br />Page 154 of 373