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<br />common pollutants found in streets such as oil and grease and <br />sediment. Additionally, surface water runoff generated from the <br />project site during construction operations can be degraded <br />potentially resulting in adverse water quality impacts to <br />downstream receiving waters. <br /> <br />Approval of the proposed amendment to the single family <br />residential standards would not result in or increase the <br />potential for water quality impacts, in that the proposed <br />amendment would not involve any activities that would result in <br />long-term or short-term water quality impacts. However, single <br />family residential land uses developed under the amended <br />standards could result in long-term operation and short-term <br />construction related water quality impacts. Through the City's <br />development review process, single-family residential land uses <br />developed under the amended standards would be evaluated for <br />potential water quality impacts. <br /> <br />The amendments to correct, clarify and update residential front <br />yard fences, definitions, second dwellings units, laundromats, <br />vending machines, townhouses, specific development standards and <br />Specific Development No. 40 zone district would not result in <br />any significant water quality impacts. <br /> <br />B. Substantially deplete groundwater supplies or interfere <br />substantially with groundwater recharge such that there <br />would be a net deficit in aquifer volume or a lowering of <br />the local groundwater table level. <br /> <br />Q. <br /> <br />Have a potentially <br />groundwater quality? <br /> <br />significant <br /> <br />adverse <br /> <br />impact <br /> <br />on <br /> <br />No Impact <br /> <br />The City of Santa Ana receives 66% of its water from underground <br />water supplies. The underground water basin in the City ranges <br />from -50 feet to +40 feet, above sea level. <br /> <br />Approval of the proposed amendment to the single family <br />residential standards would not result in adverse impacts to <br />underground water supplies, in that the proposed amendment would <br />not involve any activities that would impact the underground <br />water basin. However, single-family residential land uses <br />developed under the amended standards could result in impacts to <br />the underground water basin. Through the City's development <br />review process, single-family residential land uses developed <br /> <br />75~6 <br />