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MOUNTAIN HOUSE <br /> SPECIFIC PLAN 1 CONSISTENCY FINDINGS <br /> Section Consist- Conditions <br /> Heading ency Finding of Fact and Evidence of of Approval <br /> 1 # Title Text Y/N/NA Compliance (COA) <br /> In Fieure 15.1, runoff from area WS drains by a gravity pipe <br /> system to an open channel along Patterson Pass Road. Runoff from <br /> areas WS6 and WS7 also drain directly to the open channel along <br /> Patterson Pass Road. This channel empties into retention basin Bl. <br /> Runoff from area WS2 drains by a gravity pipe system to retention <br /> basin B2. Storm runoff from area WS3 is collected by a gravity <br /> piping system which empties into retention basin B3. Basins Bl and <br /> B2 are temporary facilities used to provide BMP treatment and <br /> flood control Basins BI, B2 and B3 are emptied by pumps over a <br /> period of 24 hours. The point of terminal discharge for Basins Bl <br /> and B2 is Mountain House Creek and the combined pumping <br /> capacity for these basins is limited by the capacity of the three <br /> existing 36-inch culverts which pass under Byron Road. The point <br /> of terminal discharge for Basin B3 is the West Side Irrigation <br /> District Intake Canal which flows to Old River. These improvements are not required for <br /> Primary Storm Neighborhood F,and will be required as <br /> 283 15.1.4(6) Drain Collection N/A part of subsequent community phases. COA-94,96 <br /> Storm Improvements. The Specific Plan Area storm improvements <br /> shall be constructed as shown in Fieure 15.1: Storm Drainage <br /> Collection System. Best Management Practice(BMP)treatment <br /> processes referred to in this section are discussed in Section 15.1.7: <br /> Best Management Practices(BMP's). Actual size, locations and <br /> 15.1.4(6) Primary Storm configuration of improvements shall be determined during the <br /> 284 a Drain Collection design of the facilities prior to the approval of the first Final Map. Y See#274, 275,282 COA-94 <br /> Basins. Retention/detention basins shall be used for flood control <br /> and BMP treatment. Flows crossing under Byron Road shall be <br /> 15.1.4(6) Primary Storm controlled in detention basins south of Byron Road to a degree <br /> 285 b Drain Collection adequate to control 100-year flow rates. Y See9282 COA-94,97 <br /> 09/29/2000 SP-924(finaIFINDINGS) Page58 <br />