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report, dewatering began in April of 2007. The Operator began dewatering and mining the Phase II mining <br />area at that time. The Operator was required to install the Phase 2 monitoring wells one month prior to <br />dewatering activities in the mining Phase II area. The Operator has not installed the required Phase 2 <br />monitoring wells and thus has not fully complied with the approved ground water monitoring plan. Also, they <br />were required to take weekly measurements at the Phase 1 monitoring wells and the Phase 2 monitoring <br />wells during the first two months of dewatering activities at the Phase II mining area. This issue is cited at the <br />end of the report and will require corrective action to be taken by the Operator. <br />The Operator is currently not dewatering at the site and the pit excavation is full of water. The current <br />approved ground water monitoring plan needs to be updated and improved. The monitoring plan lacks a clear <br />mitigation plan if negative impacts to the groundwater system occur due to the dewatering activities. Also, <br />the plan lacks a defined trigger point of ground water drawdown that will initiate mitigation. Also, the Division <br />will need to know the location of all five monitoring wells. In order to regain compliance with the ground <br />water monitoring plan, the Operator will need to submit and receive approval of a Technical Revision to the <br />permit. The revision should include a mitigation plan, defined mitigation trigger points and a map indicating <br />the locations of all five monitoring wells. The Division recommends the Operator model the mitigation plan <br />currently approved for their Wattenberg Lakes operation (DRMS File No. M-2004-051).