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<br />course of stream or river, or substantially increase the <br />rate or amount of surface runoff in a manner, which would <br />result in flooding on or off-site? <br />D. Create or contribute runoff water which would exceed the <br />capacity of existing or planned storm water drainage <br />systems or provide substantial additional sources of <br />polluted run-off? <br /> <br />L. Result in increased impervious surfaces and associated runoff? <br /> <br />M. Create a significant adverse environmental impact to drainage <br />patterns due to changes in runoff flow rates or volumes. <br /> <br />No Impact <br /> <br />The City of Santa Ana has a Master Plan of Drainage to guide the <br />construction of adequate drainage facilities in the City. The <br />facilities include a series of underground storm drain systems, <br />open storm drain systems, catch basins and natural drainages. A <br />significant drainage impact can occur when existing rates of <br />surface water runoff are increased and existing drainage <br />facilities are unable to accommodate the additional rates of <br />runoff. Existing rates of surface water runoff can increase <br />through the introduction of additional amounts of impervious <br />surfaces, or through changes to existing drainage patterns. <br /> <br />Approval of the proposed amendment to the Municipal Code to <br />establish a zoning ordinance for a Specific District and any <br />subsequent construction according to this zoning document would <br />not significantly alter existing drainage patterns or increase <br />existing rates of surface water runoff due to the project's <br />relatively small scale such as that determined by California <br />Environmental Quality Act Section 15303. The applicant shall <br />also pay the required National Pollutant Discharge Elimination <br />System (NPDES) fee as a mitigation measure, as well as Fish and <br />Water Conservation Plan (FWCP) fees as applicable. <br /> <br />F. Place housing within a 100-year floodplain, as mapped on a <br />federal Flood Hazard Boundary or Flood Insurance Rate Map <br />or other flood hazard delineation map? <br />G. Place within a 100-year floodplain structures which would <br />impede or redirect flood flows? <br />H. Place housing within a 100-year floodplain, as mapped on a <br />federal Flood Hazard Boundary or Flood Insurance Rate Map <br />or other flood hazard delineation map? <br /> <br />8qA-415 <br />