Laserfiche WebLink
not, indicate the depths of the boreholes associated with the sites, discuss whether <br />the sites had more than one borehole, and indicate whether the sites were mined <br />through or reclaimed. This would raise the total number of borehole drilling sites <br />in this TR to something greater than 82. <br />7. During the course of our adequacy review of TR-50, it was determined that <br />Colowyo had drilled thirteen boreholes that now possess DWR water monitoring <br />well permits. Four of these boreholes aze the water monitoring wells discussed in <br />Item 5 above that were drilled inside the Colowyo Mine permit. <br />The other nine appear to be referenced in, but were not part of, Colowyo's MR-35 <br />application. Colowyo's MR-35 cover letter of January 5, 1996 states, "Colowyo <br />is currently in the process of installing nine groundwater monitoring wells outside <br />of the permit areas for the purpose of collecting baseline groundwater data in <br />conjunction with future mine expansion permitting...The attached map shows the <br />nine previously permitted monitoring wells outside the permit area plus the <br />proposed monitoring wells within [he permit area". <br />A review of the information provided by Colowyo pertaining to these nine wells <br />indicates that five, and possibly six, of them may have been drilled without formal <br />DMG approval. It is possible that Colowyo and DMG may have overlooked <br />amending Colowyo's NOI to add these nine boreholes. Whether an NOV should <br />be issued to Colowyo for drilling these five or six boreholes without DMG <br />approval is probably a matter to be addressed by Jim Burnell. <br />8. An additional adequacy item pertaining to the four water monitoring wells <br />situated inside the permit boundazy is the issue of whether DMG should transfer <br />these wells to the NOI at all. Is it possible that these wells should instead be made <br />part of the Colowyo Mine's water monitoring program? If so, we would need to <br />retain some reclamation bond money for them. <br />9. Tn conjunction with approving this TR, Colowyo will need to revise its cost <br />estimate to reflect the $66,922 (or less if the four monitoring wells aren't <br />transferred) reduction in reclamation liability due to the transfer of the drill sites <br />to the Colowyo NOI. We should probably process this revision as a bond <br />reduction TR (Rule 3.02.2(4)) for the purposes of public and surety notice and <br />opportunity for formal public heazing. <br />10. Colowyo has requested release of the $16,723 bond in conjunction with approval <br />of this TR. We will need to document in our files that we approved the return of <br />[his bond to Colowyo not as a bond release, but rather in conjunction with this <br />transfer of borehole sites to the NOI. <br />11. Once these boreholes are made part of the NOI, Jim Burnell will need to address <br />the issue of whether to approve bond release on the 13 (or 9) water monitoring <br />wells. Colowyo contends that as these wells have been issued DWR monitoring <br />