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INSPECTION REPORT - PAGE 3 <br />FILE NO. M -77 -378 <br />DATE: August 28, 1985 <br />Terry Tunnel <br />5. The Terry Tunnel site was inspected. Mine water discharge was being <br />routed to the sludge ponds. Mine discharge was approximately 100 gpm. <br />Water quality is as follows: <br />SS No. 3 = Terry Tunnel discharge at portal <br />pH = 6.9 <br />EC = 623 <br />T = 51.9 <br />(Flow at pond outlet flume = 0.3') <br />6. Mine water treatment sludge disposal at this site has not been <br />appropriately handled. Unlined trenches have been excavated for sludge <br />disposal from the ponds. This method of sludge disposal is not <br />addressed in the permit. In discussion with Mr. Murray, it appears that <br />this sludge may not be as toxic or acid forming as sludge from the <br />American Tunnel. It was discussed that the amount of of sludge should <br />be estimated over a reasonable period of time so that a feasible sludge <br />disposal and reclamation plan could be designed and implemented. <br />See Recommendation No. 2. <br />Millsite /Tailings Area <br />7. The area where the Amerian Tunnel Mine water treatment sludge had been <br />disposed along the Animas River was inspected. The meander above this <br />site has approximately 1.5 feet of berm above the top of the channel <br />bank. This berm is not adequate to contain flow in the channel. During <br />high water it is likely that this berm would be washed out and flow <br />possibly routed through the sludge disposal area. <br />8. The sludge disposal berm adjacent and just north of the Animas River <br />channel appears to be stable. Additional armoring of this berm may be <br />needed as erosion has occurred on the Animas River side. <br />9. The sludge disposal area is not lined with a geo- membrane liner. A <br />filter fabric was used. The base of the pond is old tailings as stated <br />by Mr. Murray. <br />