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Industrial Discharge Permit Inspection Form Page 3 7. Describe the wastewater treatment processes. -Treatment for mine-related activity is provided by unlined sediment ponds, as follows: D. Pt. Wastewater Source Treatment Cap., MG Receiving Waters 001 Stormwater runoff 5 sediment ponds 11.51 Johnson Gulch 002 Stormwater runoff, 2 sediment ponds 9.01 No-Name Gulch mine dewatering, industrial waste pond overflow 003 Stormwater runoff, 2 sediment ponds 1.59 E. Buzzard Culch mine dewatering 005 Stormwater runoff, 1 sediment pond 59.78 Coyote Gulch spoil springs 006 Stormwater runoff, 3 sediment ponds 4.36 W. Buzzard Gulch mine dewatering 008 Stormwater runoff 1 sediment pond 1.08 Ute Gulch 009 Stormwater runoff, 3 sediment ponds 5.77 H. Pyeatt Gulch mine dewatering 010 Stormwater runoff 1 sediment pond 0.41 Elk Gulch 011 Stormwater runoff, 2 sediment ponds 3.26 E. Pyeatt Gulch mine dewatering 012 Stormwater runoff 1 sediment pond 0.24 Deer Gulch 013 Stormwater runoff 1 sediment pond Unknown W. Pyeatt Gulch -The industrial waste pond (also unlined) provides settling, and two oil booms are in place near the outfall to remove oil and grease. Two concrete underground oil/caster separator tanks are also provided after the pond outfall. The effluent then flows into No Name Gulch, which goes through two sediment ponds before discharging st 002. 8. Evaluate the treatment facility. Include in this evaluation a discussion of any operation and maintenance problems. -According to the permittee, discharge points 001, 002 and 005 experience problems with algae blooms in the summer, which can cause an elevated pH. They- are dealing with this by the use of ~2 bubblers, which lower the pH. The permittee would still Like a variance at these points for pH during the summer. -The flow monitoring device (a parshall flume) used at 002 is inaccurate. The effluent appeared to be flowing at a rate of about 50 gpm, but was measured at 200 gpm. The gage (and the ones at the other discharge points) will need to be checked and calibrated. 9. How are solid wastes disposed of^ -Sludge from the sediment ponds is placed on the spoils areas, or in the fly ash disposal area.