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- ii i i ii i ii i ~i iiii iii <br />999 <br />,t~' OF0~9 <br />~~ . " :, ~j DEPARTMENT OF NATURAL RESOURCES <br />/%1 , p ~ * David H. Getches, Executive Director <br />~~~ MlNED LAND RECLAMATlG1N D!ti <br />1876 DAVIDC. SHELTON, Director <br />Richard D Lamm <br />Governor <br />DATE: December 19, 1985 <br />T0: Gregg Squire <br />~~~ <br />FROM: Joel Sobol ,cam--=~ <br />RE: REYIEW OF EMPIRE ENERGY'S, 1984 HYDROLOGIC MONITORING REPORT, <br />PERMIT N0. C-044-81 <br />Empire Energy's 1984 Hydrologic Monitoring Report, received by MLRR on <br />April 22, 1985 has been reviewed. The Report is divided into two principal <br />parts; 1) ground water, and 2) surface water. Included in the report are a <br />discussion of unpredictive adverse impacts to the hydrologic system and the <br />compilation of monitoring data submitted to the Division on a quarterly <br />basis. The report is definitive and well organized. The discussion presented <br />below is a review and analysis of the information submitted on 1984 Hydrologic <br />Monitoring Report. Some changes have been recommended in the section of this <br />review referred to as comments and recommendations. <br />Ground Water Monitoring - Water Quantity <br />Trout Creek Sandstone <br />The Trout Creek Sandstone is the lowermost principal aquifer in this region <br />and Ties approximately 360 feet below the "F" coal seam, (No. 5 Mine). Refer <br />to figure III-I, mine permit. Empire Energy currently has two water supply <br />wells, the No. 5 and Okie Plaza, completed in the Trout Creek Sandstone. <br />Water quality is monitored on a quarterly basis in these wells. Presently, no <br />water level data from the Trout Creek Sandstone is submitted in Empire <br />Energy's Annual Hydrologic Report. <br />Middle Sandstone <br />The Middle Sandstone lies approximately 160 feet above the "F" coal seam and <br />approximately 230 feet below the Twenty-Mile Sandstone. Empire Energy has six <br />monitoring wells completed in the Middle Sandstone. in general, water levels <br />appear to be rising after 3 years of decline. Water level decline has <br />averaged approximately 25 feet per year in Wells TR-4, TR-7A and 81-01, <br />(Figures 3, 4 and 5 respectively - Hydrologic Report), from mid 1981 through <br />the first quarter 1984. Water levels have started to rise in the last quarter <br />1984. Since the beginning of 1984 there has been an upward trend in water <br />levels in We11s TR-7A and 81-01. In well 83-02, Figure 7, there has been an <br />upward trend in water levels through 1984 until the last quarter, Since then <br />water levels have dropped approximately l0 feet. Recent monitoring Wells. <br />83-01 and 83-03, Figures 6 and 8 respectively, have shown a steady rise ~n <br />~v~water levels through most of 1984. ~;-~~ <br />.. ML ~ ._c. :1l'' <br />= 423 Centennial Building. 1313 Sherman Street Denver, Colorado 80203 Tel. (303} 866-3567 <br />