Laserfiche WebLink
v �/a COLORADO <br /> Division of Reclamation, <br /> Mining and Safety <br /> Department of Natural Resources <br /> 1313 Sherman Street,Room 215 <br /> Denver,CO 80203 <br /> March 9, 2020 <br /> Mr. Brad Janes <br /> Varra Companies, Inc. <br /> 8120 Gage Street <br /> Fredrick, Colorado 80516 <br /> Re: Varra Companies, Inc., Parcel 122, File No. M-2015-033, <br /> Technical Revision No. 2 (TR-02) Adequacy Review <br /> Mr.Janes: <br /> The Division of Reclamation, Mining and Safety (Division/DRMS) reviewed the contents of the <br /> technical revision (TR-02) for the Parcel 122 site submitted on February 28, 2020 and submits <br /> the following comments. The Division is required to make an approval or denial decision no <br /> later than March 30, 2020 therefore; a response to the following adequacy review concerns <br /> should be submitted to the Division as soon as possible. <br /> 1. The Operator submitted a drawing of slope profiles for five (5) slopes; Slope #1, Slope <br /> #2, Slope #3, Slope #4 and Slope #5. Additionally, the Operator submitted stability <br /> analysis using STABL software for four (4) slope profiles; Worst Case 1.25H:1V Slope, <br /> Profile #1, Profile #3 and Profile #5. <br /> The stability analysis for Profile #3 appears to be mislabeled and should be labeled as <br /> Profile #4, based on the slope profile drawings submitted by the Operator. Please <br /> explain this discrepancy and provide a stability analysis for Slope#3 and/or relabel the <br /> profile provided as Profile #4. Additionally, please explain why all five (5) slope profiles <br /> were not analyzed by the Operator. <br /> The Division will verify the Applicant's stability analysis models using Clover Technology's <br /> Galena v7.2 slope stability software following the Applicant's response to this letter. <br /> Please be advised the technical revision for the Parcel 122 site may be deemed inadequate, and <br /> the revision may be denied on March 30, 2020, unless the above mentioned adequacy review <br /> items are addressed to the satisfaction of the Division. <br /> t7 <br /> 1313 Sherman Street, Room 215, Denver, CO 80203 P 303.866.3567 F 303.832.8106 https.- icolorado.gov/drms ( *' <br /> Jared S. Polis, Governor Dan Gibbs, Executive Director Virginia Brannon, Director 876,t" <br />