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PERMFILE139315
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PERMFILE139315
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Entry Properties
Last modified
8/24/2016 10:40:07 PM
Creation date
11/26/2007 8:30:24 AM
Metadata
Fields
Template:
DRMS Permit Index
Permit No
C1981041A
IBM Index Class Name
Permit File
Doc Date
5/13/2002
Section_Exhibit Name
Tab 12 Operation Plan
Media Type
D
Archive
Yes
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water from the mine was a combination of water contained within the B seam and that <br />• coming from the roof and floor. Water quality was typically adequate to discharge, <br />though occasional problems with total suspended solids occurred. Routing the water <br />through a settling pond solved the problem. The quantity and quality of B seam <br />discharges are detailed in the annual hydrologic reports and are summarized below <br />for the 1998 water year. <br />pH =8.1 standard units <br />Temperature = 52.2 °F <br />Total Suspended Solids = 17.1 mg/1 <br />Iron = 0.5 mg/1 <br />Conductivity=2363 <br />Total Dissolved Solids = 1482 mg/(1 <br />Manganese (Single Sample) 0.029 mg/1 <br />Table 12-4 shows the results of an analysis of the water coming out of the roof <br />in the 1~' Left Panel. The sample was taken from an area where the roof was dripping <br />at about 5 gallons per minute in one intersection. The results indicate this water is <br />similar to the B seam water. The total suspended solids, pH, and iron are higher than <br />the average of the 1998 B seam water but still within the discharge permit limits. The <br />total dissolved solids and manganese were lower than the B seam water. The water <br />from the C seam was expected and is shown to be similar to the B seam water. No <br />problems were expected regarding discharge of the water. <br />Since the C seam overlies the B seam, areas where the B seam has been <br />mined have probably de-watered the C seam. The Annual Hydrologic Reports <br />indicate that the water entering the B seam works flows from the roof, floor and the <br />coal. Areas in the B seam had water dripping from the roof for many years and <br />continue to de-water the overlying strata. <br />During the exploration mining, water entered the C seam works from the roof <br />• and along the bottom of the coal seam. Initially, the mine was advancing down dip so <br />water collected in the working faces. This made for difficult mining conditions since <br />Volume 3 Tab 12 12-6 5/00 <br />
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