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~~ ~ 61 1 Skyline Road - Laramie. WY 82070 - (307) 742-0031 <br />V V V V C ENGINEERING FAX (307) 721-2913 - E-mail: intolar@wwcengineering.com <br />November 1, 2007 ~© <br />R~, ~ <br />Andrew M. Hunter ~;aamat-on, <br />4924 IDS Center ~'~"`~" J and Safety <br />Mining <br />80 South 8`" St. <br />Minneapolis, MN 55402-2100 <br />RE: Monitoring Well Abandonment/Transfer Ownership, Edna Mine <br />Dear Mr. Hunter: <br />Chevron Mining Inc. (Chevron) has contracted WWC Engineering (WWC) to assist in <br />attaining bond release for the former Edna Mine, Permit Number C-80-001, located in Routt <br />County, Colorado. The Edna Mine is in permanent cessation, reclamation is nearly complete, <br />and the site is approaching potential final bond release. Prior to and during mining activities <br />numerous monitoring wells were drilled within and extending outside of the permit boundary. <br />The monitoring wells are constructed of steel/PVC casing ranging in diameter from 1"-6" and <br />depth from tens to hundreds of feet. Most monitoring wells are completed with a 6" stick-up <br />above ground and a protective housing at the well head, however some wells are flush with <br />the ground. The construction of the monitoring wells was for observation not production. <br />The monitoring wells had numerous purposes including attaining water level and/or water <br />quality data. The referred monitoring wells have since been removed from the Edna Mine <br />groundwater monitoring program. These monitoring wells need to be either plugged and <br />abandoned in accordance with state regulations or transferred in ownership rights to the <br />current property owner prior to final bond release. The following monitoring wells are located <br />on your property (Figure 1): <br />• EBR-1 <br />• PM-3A <br />• LINK-5 <br />• LINK-6 <br />• LINK-7 <br />• 24S <br />• C3 <br />• PM-4 <br />The aforementioned list includes monitoring wells referred to in the Edna Mine Permit and <br />monitoring wells which have been observed in the field. Those monitoring wells not located <br />