Laserfiche WebLink
C. Substantially alter the existing drainage pattern of the site <br />or area, including through the alteration of the course of <br />stream or river, or substantially increase the rate or amount <br />of surface runoff in a manner, which would result in flooding <br />on or off-site? <br />D. Create or contribute runoff water which, would exceed the <br />capacity of existing or planned storm water drainage systems <br />or provide substantial additional sources of polluted run-off? <br />L. Result in increased impervious surfaces and associated runoff? <br />M. Create a significant adverse environmental impact to drainage <br />patterns due to changes in runoff flow rates or volumes. <br />No Impact <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 />Approval of the proposed general plan element amendments would <br />not increase existing rates of surface water in the City, in <br />that the proposed amendments would not introduce additional <br />amounts of impervious surfaces into the City or result in <br />changes to existing drainage patterns. Therefore, the approval <br />of the proposed general plan element amendments would not result <br />in significant drainage impacts. <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 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 />H. Place within a 100-year floodplain structures which would <br />impede or redirect flood flows? <br />13 <br />75C-51 <br />