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August 22, 2012 C- 1980 - 002 /0.C. Mine No. 2 BFB <br />Inspection Topic Summary <br />NOTE: Y= Inspected N =Not Inspected R °Cornments Noted V= Violation Issued NA =Not Applicable <br />R - Air Resource Protection <br />N - Roads <br />N - Availability of Records <br />N - Reclamation Success <br />R - Backfill & Grading <br />N - Revegetation <br />N - Excess Spoil and Dev. Waste <br />N - Subsidence <br />N - Explosives <br />N - Slides and Other Damage <br />N - Fish & Wildlife <br />N - Support Facilities On -site <br />R - Hydrologic Balance <br />N - Signs and Markers <br />N - Gen. Compliance With Mine Plan <br />N - Support Facilities Not On -site <br />N - Other <br />N - Special Categories Of Mining <br />N - Processing Waste <br />N - Topsoil <br />COMMENTS <br />INTRODUCTION - This was an aerial inspection of the Ohio Creek 42 Mine (OC2) and the Nu Mine conducted <br />by Harry Ranney and Brock Bowles of the Colorado Division of Reclamation, Mining and Safety. Aerial <br />photographs were taken by Harry Ranney on August 22, 2012 at approximately 9:45 am. The weather conditions <br />appear to be overcast. <br />The Nu Mine is an abandoned, pre -law coal mine of which the Division has no records. The only information the <br />Division has about the Nu Mine are references made to it in the OC2 permit (C- 1980 -002). The suspected Nu <br />Mine portal is approximately .8 miles Northwest (310 degrees) of the OC2 Mine and is on private surface (photo <br />1). The exact location of the Nu Mine is unknown to the Division but its approximate location was detennined <br />from maps in the OC2 permit and structures (buildings, ponds, roads and tailings) seen in aerial photography. <br />Sometime prior to October 19, 1992, the surface ownership changed for the Nu Mine and the right -of -entry was <br />lost. <br />This inspection is in response to a citizen inquiry about the allegationthat equipment was left in the OC2 mine and <br />it might be leaking hydraulic fliud and contaminating the Ohio Creek drainage. From the OC2 Mine portal, the <br />mine workings slope down to the North. Water from the OC2 mine workings was directed to the back of the <br />workings toward the abandoned Nu Mine which lies to the Northwest and down gradient from the OC2 Mine. The <br />history of the Nu Mine and its exact location are unclear from the OC2 Permit, but at one time both of the mine <br />workings were interconnected. A concrete block seal with a drain was installed June 8, 1959 that separated the <br />two workings. According to the OC2 permit application (OC Mine Environmental Report, February 1, 1980, page <br />1), water from the OC2 Mine continued to drain to the Nu Mine, through its workings and was discharged at the <br />Nu Mine adit which then continued on to a stock pond. <br />AIR RESOURCE PROTECTION — Rule 4.17: <br />There was no indication of dust or sediment movement off the site or dirt road. <br />Number of Partial Inspection this Fiscal Year: 1 <br />Number of Complete Inspections this Fiscal Year: 0 <br />Page 2 of 5 <br />