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DEPARTMENT OF NATURAL RESOURCES <br />D Monl? Pascoe. Exec ulrve DnCei O~ <br /> <br />MINED LAND RECLAMATION DIVISION <br />DAVID C. SHELTON Director <br />Richartl D Lamm <br />Governor <br /> <br />DATE: November 22, 1982 <br />T0: Mike Long ~ / ~. ~ /~ <br />i ~ <br />FROM: Roy L. Cox, Hydrogeologist ' <br />RE: Reply to the Concerns of Gene Hamilton over Issue of the <br />Chimney Rock Permit <br />Chimney Rock Coal Company's Martinez Strip will not impact the quantity <br />or quality of ground and surface waters which supply Mr. Gene Hamilton's <br />well. This statement applies to areas to be permitted under the proposed <br />document (e.g. the existing pit and the Barren Ridge). The reasoning <br />which supports this statement is discussed below. <br />Mr. Gene Hamilton's property is located approximately one half mile east <br />of the Chimney Rock permit area (see attached map). The Hamilton well is <br />59 feet deep and draws water mainly from the Stollsteimer Creek alluvium <br />(e. g. gravels and sands). The Stollsteimer Creek alluvium has a very <br />high ability to transmit water (e.g. transmissivity of over 100,000 <br />gpd/f t. ). The alluvial ground water is quickly replenished by water <br />flowing in Stollsteimer Creek. <br />The Elow of ground water in the Stollsteimer Creek alluvium is Erom east <br />to west. Mr. Hamilton's well receives ground water which enters the <br />alluvium upstream of the well. The quantity and quality of ground water <br />which supplies Mr. Hamilton's well is therefore dependent on the amount <br />and quality of water in Stollsteimer Creek upstream of his well. For <br />the mine to effect Mr. Hamilton's well, the mine would have to effect the <br />quantity and quality of water upstream of the well. The mine is located <br />below the level of Mr. Hamilton's well and over one half mile <br />downstream. Any water which may become polluted by the mine will only <br />effect water quality in alluvial and bedrock aquifers directly adjacent <br />to the mine and downstream of the mine (e. g. water will not flow <br />upstream). <br />The "C" seam, the lowest seam to be mined, outcrops above the stream <br />channel and the alluvium of Stollsteimer Creek. The shales and <br />silts tones below the "C" seam currently prevent the movement of water <br />from the Pictured Cliffs sandstone aquifer. <br />423 Centennial Building, 1313 Sherrn an SIrPDI D~nvPr. Colorntln P02(1't ~~~I (ZU 31 Rfi6 3tif,7 <br />