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z.oa.s(1) <br />would not be expected to yield more than 25 to 50 gallons per minute. <br />• GROUND WATER QUALITY. <br />Figures 2.04.5-2, 2.04.5-3, 2.04.5-4 and 2.04.5-5 contain the <br />water quality data available at the present time in the vicinity <br />of Red Canyon #1 Mine and Proposed A2 Mine. This data consists of <br />complete water quality analyses conducted from samples obtained <br />in the observation and monitoring holes designated CE-BO-4a located <br />near the center of Section 12. Three observation monitoring <br />wells are located at that site, each identified by the coal seam <br />in which they are completed: F-1, E-1 and D-1 in increasing depth. <br />One additional sample was analyzed from the mine water in the "E" <br />coal seam and is also included. <br />Review of these analyses indicates that the water is primarily of a <br />sodium bicarbonate type having dissolved solids ranging from 258 <br />milligrams per liter (mg/1) in the "F" coal seam to 1354 mg/1 in the <br />"E" coal seam. The mine water contained 506 mg/1, Hardness ranged <br />from a low of 15 mg/1 in E-1 to 43 mg/1 in D-1. Metallic constituents <br />• include iron, maganese, copper zinc and ph levels range from a low <br />of 8.2 in the mine water itself to 11.7 in D-1. These samples indicate <br />that the water from F-1 could be safe to consume directly from the <br />well. Samples E-1 and D-1 however, exceed recommended limits for <br />the .total dissolved solids (500 mg/1), iron (0.3 mg/1), and also <br />contain high amounts of sodium and sulfate which may contribute to <br />health problems such as heart disease and diarrhea. Sample F-1 was <br />taken from the "F" coal seam at a very shallow depth in proximity to <br />a nearby drainage. This water analysis may not be truly indicative <br />of water quality in the "F" coal seam throughout the area. <br />Figures 2.04.5-2a, 2.04.5-3a, 2.04.5-4a and 2.04.5-5a contain the <br />water quality data obtained on June 25, 1981. These samples were <br />taken at the three monitoring wells designated F-1, E-l and D-1 an <br />from the mine water in the "E" coal seam. A water sample was also <br />taken from the Ewing Well located in Section 11. Results of the Ewing <br />Well analysis is on Figure 2,.04.5-Sb. The recently completed well <br />CE-el-1, was also sampled as shown on Figure 2.04.5-Sc. Two piegometer <br />wells on the mine site were sampled: The east underground development <br />• waste disposal site well, Figure 2.04.5-5d, and the center sedimentation <br />pond well, Figure 2.04.5-Se. <br />REVISED Mny 8, 1981 4F <br />