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VII. <br />/WATER QUALITY <br />A. Violate Regional Water Quality Control Board water quality <br />standards or waste discharge requirements? <br />E. 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 />I. Result in an increase in pollutant discharges to receiving <br />waters? <br />N. Tributary to an already impaired water body, as listed on <br />the Clean Water Act Section 303 (d) list. If so, can it <br />result in an increase in any pollutant of which the body is <br />already impaired? <br />O. Tributary to other environmentally sensitive areas? If so, <br />can it exacerbate already existing sensitive conditions? <br />P. Have a potentially significant environmental impact or <br />surface water quality to either marine, fresh or wetland <br />waters? <br />R. Cause or contribute to an exceedance of applicable surface <br />or groundwater receiving water quality objectives or <br />degradation of beneficial uses? <br />S. Impact aquatic, wetland or riparian habitat? <br />No Impact <br />The City of Santa Ana is included within four watersheds, San <br />Diego Creek, Santa Ana River, Talbert and Westminster. Each of <br />these watershed areas are under the jurisdiction of the Santa <br />Ana Regional Water Quality Control Board and subject to the <br />objectives, water quality standards and Best Management Practice <br />requirements established in the Santa Ana River Basin Plan and <br />Orange County Drainage Area Management Plan. <br />The City of Santa Ana does not contain any impaired water <br />bodies, as defined by Section 303 of the Clean Water Act. <br />However, the City does contain several drainage facilities that <br />convey surface water runoff into bodies of water that are <br />classified as impaired. <br />The primary source of potential adverse water quality impacts <br />within the City is from nuisance flows. Nuisance flows is <br />defined as runoff that occurs during periods that are not <br />usually associated with rainfall, and are most commonly produced <br />from landscaping irrigation, leaking pipes, and water used to <br />wash off surfaces tributary to the street. Since nuisance flows <br />usually originates in the street, they commonly contain many <br />7~5 <br />