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Once material has been transferred across the river to the Chambers Processing and Stockpiling <br />area, the material will be processed by a portable crushing and screening plant. The material <br />will then be sold as aggregate or processed into asphalt or cement and then sold. <br />For jobs along the I-70 corridor to the east, an alternative crushing and stockpiling plan will <br />occur. A portable plant will be brought into a dewatered pit bottom. Gravel will be directly <br />loaded into the plant. The crushed gravel will then be stockpiled on the pit bottom. Depending <br />on the job, a portab]e asphalt or cement plant will be brought into the pit to supply demand. <br />If any "reportable quantity" of hazardous material or waste is released into the environment, the <br />operator will notify staff of the Colorado Division of Minerals and Geology as well as all other <br />appropriate local, state and federal agencies. This is more completely described by an excerpt <br />from the February 8, 2002 DMG memorandum regarding Minerals Program Notification of <br />Toxic or Hazazdous Materials Spills at Mine Sites." <br />"A reportable spill is a spill of any toxic or hazardous substance (including spills of petroleum <br />products) within the permit area reportable to any Division of the Colorado Department of <br />Public Health and the Environment, the national Response Center, the Colorado Emergency <br />Planning Committee, or the State Oil Inspector. The operator shall notify the Office of a <br />reportable spill within the permit azea using the same timeframe required by the permit, <br />license, notice, Act, Rule or Regulation governing the reporting of the spill to the appropriate <br />agency. Notice of a reportable spill shall be Faxed to: Minerals Program Supervisor, Division <br />of Minerals and Geology, FAX (303) 832-8106. The FAX shall include a ca]]-back number of <br />a responsible company official for the DMG staff to use as a contact." <br />No explosives will be used on this site for the purpose of mining or processing. No chemicals <br />will be used in the gravel processing. <br />Production Rates <br />The site's production volumes and rates can be seen below. An annual expected average and <br />maximum rate are shown. The life expectancy of the pit is based on the average rate. <br />Construction Materials Annual Production <br />Use Max Rater) Average Rate(t) Reject Rate(%) Raw Material(t) <br />Asphalt 200,000 35,000 10% 38,500 <br />Aggregate 210,000 190,000 0% 190,000 <br />Concrete Aggregate 100,000 75,000 10% 82,500 <br /> 510,000 300,000 4% 311,000 <br />4/26/04 Page D-5 <br />