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XBOW MINING. LLC <br /> <br />FIRST QUARTER 2011 POND INSPECTION REPORT <br />Pond Inspection Date: March 30, 2011 <br />Miscellaneous Comments: <br />1. The SWMP control devices were inspected and all SWMP control devices were found to be in fair <br />condition. Performed further routine SWMP maintenance during the quarter on Elk Creek mine and <br />facility roads. Sumps in front of straw bales are cleaned and/or straw bales replaced, as part of routine <br />maintenance. <br />2. Outfall 011 - Outfall 011 formerly served as a mine water pond for the Sanborn Creek Mine. The <br />pond does not collect surface drainage. With closure of the Sanborn Creek Mine, the incised pond <br />associated with Outfall 011 serves no further hydrologic function. The pond currently provides an <br />ongoing location to place ditch cleaning materials from adjacent ditches. Outfall 011 has been removed <br />from CDPS Discharge Permit CO-0000132. <br />_ 3.?;,, Sediment and WateLLevel Determination - When sediment enters a pond, it is deposited unevenly, <br />usually collecting at the inlets rather than evenly across the bottom of the pond. Reported sediment levels <br />are based upon the inspector's observations made throughout the quarter during routine inspections in <br />combination with knowledge of the pond structure. The reported pond water level is also determined by <br />observations relative to the various landmarks in the pond (depth to bottom, primary riser, etc.) <br />4. Pond 010 - East Yard Pond - is used on an interim basis to store and de-water sediment cleaned <br />from Pond A and Pond B. During the 4"' quarter 2010, the pond was partially cleaned of the sediment. <br />Unusually heavy fall rainstorms delayed completion of the project. During the 1st quarter, 2011 the East <br />Yard Pond refuse rehandle/removal was completed and the material hauled to II West Refuse Pile. <br />Notwithstanding comments above, ponds have been maintained as designed and in accordance with the <br />approved plan. <br />9, , <br />K, <br />Inspected By: G-r <br />James A. Kiger <br />J - .,,. A <br />°F <br />LEbV%° ° <br />• o • c^ <br />sQ' ?;O <br />Under Direction of 0° ' 416111 <br />enjamin L. G vAi%lo <br />Colorado Registspfession?t eer No. 34286 <br />n AVAL Q? <br />3737 Hwy 133 ° P.O. Box 535 • Somerset, Colorado 81434 USA <br />TEL (970) 929-5122 a FAX (970) 929-5177