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iii iiiiiiiiiiiuiu <br />999 <br />RICHARD D. LAMM <br />Governor <br />Department of Natural Resources <br />1313 Sherman Street -Room B7 8 <br />Denver, Colorado 80203 <br />Administration (303) 839-3581 <br />Ground Water (303)839-3587 <br />June 16, 1980 <br />J. A. DANIELSON <br />State Engineer <br />~F>-', g <br />J u i 4 0 1990 <br />Colo. Dep?. ci i!atural °.esoerces <br />MEMORANDUM <br />TO: MINED LAND RECLAMATION BOARD, ATTN <br />JIM McARDLE <br />FROM: HAL D, SIMPSON, CHIEF, WATER MANAGEMENT BRANCH <br />SUBJECT: STATE DEPARTMENT OF HIGHWAYS - UNA PTT, GARFIELD COUNTY, <br />80-80, APPLICATION FOR MINING AND RECLAMATION PERMIT <br />As requested by your office, we have reviewed the application for a gravel <br />pit near Grand Valley. Until the following information is provided, we <br />cannot recommend approval of the application: <br />1, The applicant has failed to provide sufficient information <br />to support the statement on Exhibit G that "loss of water <br />due to evaporation from the lake surface will be approxi- <br />mately equal to the phreatophyte evapotranspiration currently <br />occurring from the existing vegetative cover", The type and <br />amount of plant cover within the mining area must be pro- <br />vided along with computations to support the statement as is <br />done by other professionals. <br />2. No evaluation was made of the impact of the dewatering of <br />the gravel pit on surrounding ditches and the Colorado River. <br />3, The applicant does not indicate whether water will be required <br />for dust control or gravel washing. Lf water will be required <br />for these purposes, we recommend that the Board be provided <br />with additional information wncerning the source and amount <br />of water required. <br />~~ ~ <br />Hal D. Simpson <br /> <br />OF CO<O <br />Rti = : ~ <br />9 <br />w~ ' O <br />• ~ cl o ~ <br /># '~r <br />~ X876 ~ <br />DIVISION OF WATER RESOURCES <br />HDS/RLS:mvf <br />