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~`co~o pC~iCii~r~.D <br />t,. ,• ,,,~., ~ a FL Q ~19; 7 <br />m 0 <br />~~~~ i <br />rnza ~„~~. ..art <br />D!Y!SlON OF WATER RESOURCES <br />Department of Natural Resources <br />1313 Sherman Street -Room 818 <br />Denver, Colorado 80203 <br />Administration (303) 6923581 <br />Ground Water (30316923587 <br />February 24, 1977 <br />h1r. Doug Tiefel <br />Boulder County Planning Department <br />P.0. Box 471 <br />Boulder, Colorado 80302 <br />C.J. KUIPER <br />State Engineer <br />III IIIIII III IIII III <br />Re: Western Paving Construction <br />Company Amendment #2 <br />Dear Mr. Tiefel: <br />This is to acknowledge receipt of information concerning a gravel <br />operation near Lyons. As requested by your office, we have reviewed <br />the t•fater study for the Weng Farm property. We have estimated from <br />published evaporation and precipitation data for 1954 that lake evaporation <br />could exceed the historic consumptive use by 50% during very dry years. <br />In order to prevent injury to prior water rights, we recommend the <br />applicant obtain additional evaporation replacement water or reduce the <br />size of the proposed lake surface. <br />The present ditch shares and arty additonal replacement water <_hould <br />be provided in a replacement plan acceptable to the St. Vrain and Left <br />Hand Water Conservancy District. All replacement water should be permanently <br />and irrevocably attached to the mined land through a covenant or oi:her legal <br />means. <br />I` These conditions are acceptable to the applicant and to Boulder <br />C;,,.~w; :re have no objections to the approval of the amended permit. <br />Very truly yours, <br />~, y ~ , ~~Sd"a~. <br />Dr. Jeris A. Danielson <br />Deputy State Eng(i~neer <br />By ~Lt~[1.~6. ~Ltn.A <br />Bruce E. DeBrine <br />Deputy State Engineer <br />JAD/SSH/pjl <br />cc: W. G. Wilkinson, Div. Eng. <br />