GENERAL44107 - Laserfiche WebLink

Home Browse Search

system. The resultant impact has not limited the use of the water along Trout Creek due to adequate dilution from this moderately sized stream. However, water quality impacts will probably continue and increase with new mining in the area. Ground water monitoring at the mine has been designed to detect these impacts if they become a problem. Water level impacts to regional alluvial and regional bedrock aquifers are not anticipated. However, it is expected that activities at the Edna mine may impact off-site ground water quality in bedrock and alluvial aquifers. The potentially affected rock aquifers are the Middle Coal group aquifers, composed of overburden aquifers from the Lennox, Wadge and Wolf Creek seams. Seneca II Mine The Seneca II strip mine is located on the plunging toe of the Tow Creek Anticline. A portion of the mine is in the Grassy Creek drainage and a portion is in the fish Creek drainage. The Grassy Creek portion has ground water which is tributary to the Hayden Syncline and Sand Wash Basin and is, thus, not hydrogeologically adjacent to the ground water study area. The Fish Creek portion, however, is hydrologically adjacent to the Twentymile Park Synclinal Basin. The Wadge and Wolf Creek seams are mined at the Seneca II Mine. Mining occurs on the steeply dipping northwestern flank of the Twentymile Park Basin. The Seneca II Mine will impact ground water levels in the Wadge and Wolf Creek overburden aquifers during mining. After mining, water from the spoils aquifer may impact the quality of ground water in these aquifers and the Twentymile sandstone aquifer. The Seneca II Mine will affect alluvial ground water quality indirectly through surface water discharges from the mine. CYCC Mines No. 1, No. 2, No. 3 and Eckman Park Mines The Mine No. 1 and Eckman Park strip mines are located along the southern slope of the upper reaches of Foidel Creek. The Energy No. 2 strip mine is located along Fish Creek. The Energy No. 3 strip mine is located at the confluence of Middle and Fish Creeks. The Mine No. 1, No. 2 and Eckman Park Mines are located along the flanks of a northerly plunging anticline which partially divides the main Twentymile Park Basin from the smaller sub-basin to the southeast, while the No. 3 Mine is located along the eastern flank of the main basin. The CYCC Mine No. 1 and 2 have been reclaimed, while the Eckman Park Mine will remain active, through its recently submitted permit revision for the Little Middle Creek tract. The Wadge seam of the Middle Coal Group has been mined at the CYCC Mine No. 1, No. 3 and Eckman Park Mines. The Little Middle Creek tract will mine both the Wadge and the Wolf Creek seams. The No. 2 Mine was in the Fish Creek seam of the Upper Coal Group. The CYCC Mine No. 1, No. 3 and Eckman Park Mines will impact the quality of ground water in the Wadge overburden aquifer. Spoils leachate from backfilled -51-