2016-02-03_PERMIT FILE - C1981038 (2)

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42.04 APPLICATION FOR PERMIT FOR SIIRFACE OR UNDERGROUND MINING ACTIVITIES -- _ MINIMUM REQUIREMENTS FOR INFORMATION ON ENVIRONMENTAL RESOIIRCES. 2.04.7 Hydrology Description. (1) (a) (i)(ii)(iii) and (iv) (Cont'd.) samplers (DH-70 and GR77-7) inoperative, but water level indicators remained functioning in DH-65, DH-60, DH-58, DH-69, DH 70, and GR-77-7. CWI believed that the functioning water level detection instruments portrayed seasonal fluc- tuations in static water levels. The areal extent of CWI groundwater investiga- tion is bounded by Terror Creek on the East, West Fork of Terror Creek on the North, Roat- cap Creek on the West, and the North Fork of the Gunnison River on the South, comprising approximately 5000 acres. Although several hydrological studies were conducted previously in anticipation of Lease C-37210, the present investigation began in Spring, 1983. Color air photographs purchased from Associated Surveys (which performed the fly overs on September 22, 1982, under Ch1LRD contract) at a scale of 1 inch to approximate- ly 1,000 feet were inspected for vegetative and geomorphologic indicators. Concurrently, a suitable base map depicting topography, roads, structures, etc., was enlarged to 1:12000 from U. S. G. S. 7 1/2 minute series and compiled. A preliminary map was developed in which the possibility of a hydrologic feature was to be substantiated in the field. In this fashion, every likely site for a pond, spring, etc., was identified. Subsequently, in order to verify the correct locations, search for additional features, characterize field param- eters (flow pH, temperature, and conductivi- ty), and ascertain beneficial use, CWI's tech- nical staff examined the area of study on foot, where surface ownership consent was ob- tained. Some of the features not visible from the air photographs were then located by stan- dard field mapping procedures. Colorado West- moreland Inc. believes this field program was comprehensive and thorough in terms of Revised 12/26/84 Revised 10/01/87 28