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Rob Zuber <br />January 14, 201 b <br />Page 2 <br />During the first day of the report (5-13-15), Jim Javernic of Javernic Oil Company had commented <br />that the milky colored substance that G. Patterson thought to be old oxidized hydraulic oil was laying <br />on the bottom of the water pool in the tunnel — not floating, therefore not oil. As stated above, the milky <br />colored substance was later determined to be pigeon excrement carried out in the storm water. <br />Conclusions: <br />EFCI and its contractor conducted a comprehensive inspection of the truck tunnel to locate any sources <br />of oil. During the inspection it was noted that a minor quantity of oil had dripped down the west side <br />of the truck tunnel wall. This oil originated from the disconnecting of hoses from the referenced <br />hydraulic accumulator cylinder while removing associated equipment from the truck tunnel in 2001. <br />This oil remains as a stain on the concrete wall and is highly unlikely to travel to were it could reach <br />the tunnel floor. <br />Removal of the oil from the pipes, and removal of any equipment containing oil, was completed as <br />stated above. A test of the water that had accumulated in the tunnel determined that there was no oil <br />contamination. The referenced hydraulic accumulator cylinder and the 5 gallon buckets of oil were <br />removed for disposal by Javernick Oil Co. The oil absorbent pads in the tunnel were later removed for <br />disposal by Kessler Reclamation Co. These procedures were conducted in order to insure that there are <br />no remaining sources of oil in the tunnel that could reach water that accumulates in the future and that <br />may discharge from the tunnel. <br />Please let me know if you have any questions or require additional information. <br />Sincerely, <br />Allen S. Weaver <br />Mine Manager <br />