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�i <br /> Any potentia(7\'idverse impacts to air qu�ty shall be miti- <br /> gated by Conditions of Approval as imposed by the San Joaquin <br /> County Air Pollution Control District in their Authority To <br /> Construct. No adverse environmental changes or impacts will <br /> occur. <br /> 1.4.3 Surface and Groundwater Quality; Hydrology <br /> All storm water is contained within the mine area and used <br /> r' in the processing of aggregates thereby reducing the amount of <br /> ground water required to supplement process water. No signifi- <br /> cant effects to surface and ground water quality have resulted <br /> r- from the existing operation. There are no perennial streams <br /> within the area. Mining will not directly disturb any ephemeral <br /> streams. Mining operations occur approximately 200 feet above <br /> the ground water table. <br /> 1.4.4 Biological Resources <br /> As discussed in the Biological Resources section (5.4) , <br /> various resources will be impacted by theJ <br /> ro 'ect. All of ' these <br /> P <br /> impacts are judged as less than significant. Generally speaking, <br /> a less than significant impact was determined because resource <br /> removal was not significant when compared to the regional re- <br /> source population and/or the impact was temporary and would be <br /> remediated by reclamation to the original land use, often contem- <br /> poraneously. <br /> 1.4.5 Noise <br /> Current noise levels are described in section 5. 5. It is <br /> r` readily concluded that current noise does not exceed those 'recom- <br /> mended levels for the site, and that in the absence of an expand- <br /> ed operation, no significant changes in current noise levels can <br /> be anticipated. <br /> i <br /> 1.4.6 Traffic and Transportation <br /> The possibility that the proposed project extension would <br /> have an adverse impact upon traffic and transportation was inves- <br /> j tigated in detail. <br /> KRC Aggregate, Inc. proposes to permit for an anticipated <br /> maximum over the life of the quarry for 160 haultrucks per day, <br /> f ; and an average of 75 haultrucks per day. j <br /> �. Analysis indicates that roadways serving the quarry are in <br /> good to excellent condition, suitable for significant truck <br /> traffic. No significant impacts or adverse environmental changes <br /> will result from the continued haultruck traffic. See Section <br /> 5.6 for additional details on this issue. <br /> fi <br /> 4 <br /> KRC Aggregate, Inc. <br /> z <br /> 3 - April 1, 1994 <br />