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Item No . 3 <br /> PC: 2-18-88 <br /> UP-88-20 <br /> Page 5 <br /> spill-over . In order to ensure containment of the material , a <br /> condition of approval is proposed which would add a perimeter <br /> concrete driveway and containment curb to the treatment slab . <br /> Process water will be pumped from an existing on-site irriga- <br /> tion well . No runoff from the decontamination operation is <br /> expected due to the controlled water spraying and mixing pro- <br /> cess. Storm runoff will be collected on-site and retained in a <br /> separate storm retention pond. <br /> In order to control the type and level of toxicity of each <br /> batch, samples will be tested regularly by a certified labora- <br /> tory and the results transmitted to the Local Health District <br /> and the State Department of Health Services . Treated soil will <br /> not be removed from the facility unless both agencies issue <br /> their clearance permits. <br /> ENVIRONMENTAL CONSIDERATIONS : <br /> An Initial Study was prepared on January 8 , 1988 , and no signifi- <br /> cant environmental effects were identified. On that basis , a <br /> proposed Negative Declaration has been prepared for the <br /> Commission ' s consideration. Major issues evaluated in the <br /> Initial Study were : ( 1 ) potential for spillage , ( 2 ) depth to <br /> groundwater , ( 3 ) haul routes , ( 4 ) air quality degradation, ( 5 ) <br /> noise generation, and ( 6) area resident safety. Proposed con- <br /> ditions of approval have reduced or eliminated these issues to <br /> insignificant levels. <br />