Laserfiche WebLink
<br />Industrial Discharge Permit Inspection Form <br />Page 3 <br />7. Describe the wastewater treatment processes. <br />-Treatment is provided for the mine water and surface runoff by unlined <br />sediment ponds. There are six ponds in use at the site. Surface runoff <br />from the coal stockpile and prep plant area goes to sediment pond #1 <br />(discharge point 001). Surface runoff from the refuse area goes to <br />sediment pond #4 (discharge point 002). <br />-Mine water is pumped from two dewatering wells (located near the mine <br />workings, as opposed to piunping directly from the mine itself - the water <br />table is still lowered), on an intermittent basis, to settling pond #3. <br />From there it can be routed to the prep plant for makeup water, or to <br />discharge point 003. Mine water may also be pumped to sediment pond #5 <br />(discharge point 004). This is not currently being done, but the <br />permittee wishes to maintain the flexibility to do it. Otherwise, surface <br />runoff from disturbed areas is the only flow into pond #5. There is an <br />unlined evaporation pond located next to pond #1. It is used for <br />treatment of low volumes of prep plant water, and is nondischarging. <br />-Holding pond #2 is used for prep plant wastewater recycling, and for <br />storage of chlorinated effluent from the bath house and other sanitary <br />wastewater. (Chlorination is the only treatment applied up to that point <br />for the sanitary wastewater. Settling is then provided in the holding <br />pond.) The water is reused in the prep plant. There is no discharge to <br />state waters from pond #2. <br />8. Evaluate the treatment facility. Include in this evaluation a discussion <br />of any operation and maintenance problems. <br />-No problems were noted. <br />9. How are solid wastes disposed of <br />-The ponds are dredged as needed (i.e., when the sludge buildup is great <br />enough to hamper the pond operation - this varies for each pond), and the <br />sludge applied in the refuse area. <br />10. How are hazardous wastes disposed of? <br />-None generated. <br />11. Axe the facility conditions properly reflected by the permit? Yes( ) <br />No(X) If no, identify the differences. <br />-The current permit does not show the change in disposal of prep plant <br />water to a non-discharging system. The new permit will reflect this <br />change. <br />Is there a need for extra permit conditions? <br />-Na. <br />