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ENVIRONMENTS INC. • <br />SUBURBAN BAND AND GRAY EL, C^ <br />TEMPORARY HUPPLY PLAN <br />JUNE 15, ZDO1 <br />• PAGE 4 <br />e) We have not calculated depletion timing since the pit is within 300 <br />feet of the river. <br />9) Industrial uses need 3,00 ac-ft/year (dust control on roads). The <br />concrete plant uses another 5.00 ac-ft/year, total 8,00 ac-ft/year. <br />10) Water retained in the gravel is 4$ by weight. <br />11) Lake surface evaporation is based on 25.00 acres ± of water surface <br />during reservoir construction. <br />CONCLUSION <br />This plan is quite simple it will require Suburban Sand and Gravel to: <br />1) Supply makeup water amounting to 24.14 ac-ft maximum during <br /> reservoir construction. <br />2) Deliver the water via the Burlington Ditch to the South Platte <br /> River in the months shown i n TABLE A Column 5. <br />3) The monthly accounting form has to be filled out at the end of each <br /> month and submitted to the Division 1 Engineer yearly. <br />4) Denver Water Board or its contractors will construct the liner that <br /> seals the reservoir. <br />I hope this information is adequate to resolve this permit and if you have <br />any questions please call me at the above number. <br />Sincerely, <br />ENVIRONMENT, INC. <br />~ i <br />Stevan L. O'Brian <br />President <br />enclosures <br />cc Suburban Sand and Gravel <br />files <br />