Laserfiche WebLink
ARCADIS <br />; Prof r:NN-tA Frumoornpr;P (i:N!i a�Cy.S <br />Mr. Berhan Keffelew <br />Environmental Protection Specialist <br />Colorado Division of Mining Reclamation and Safety <br />Department of Natural Resources <br />1313 Sherman Street, Room 215 <br />Denver, Colorado 80203 <br />Subject: <br />Holcim (US) Inc. Portland, Colorado <br />March 2011 Groundwater Monitoring Report <br />DRMS Permit No. M- 1977 -344, Technical Revision No. 6 <br />Dear Mr. Keffelew: <br />Sincerely, <br />ARCADIS <br />Christopher S. Peters, CPG <br />Vice President <br />Copies: <br />Imagine the result <br />RECEIVED <br />JUL 2 2 2011 <br />Division of Reclamation, <br />Mining & Safety <br />On behalf of Holcim (US) Inc. (Holcim), please find enclosed one copy of the Final <br />March 2011 Groundwater Monitoring Report, which summarizes analytical results for <br />groundwater samples collected on March 29 and 30, 2011. <br />Per the requirements of the DRMS- approved GMP for monitoring well MW -7, the <br />results of two or more of the selected analytes used for compliance (TDS, sulfate, <br />potassium, sodium, iron, and manganese) did not exceed their respective <br />compliance values by more than 10 percent. Therefore sampling of MW -7 will remain <br />on an annual basis. <br />In the proposed Groundwater Monitoring Plan dated July 7, 2010, Holcim provided <br />proposed compliance standards for monitoring well MW -13. The March 2011 <br />groundwater sampling results for MW -13 (compliance well) do not exceed these <br />proposed compliance standards. To date, Holcim has not received notice from <br />DRMS accepting the proposed compliance parameters and standards for MW -13 <br />(compliance well). <br />Please contact me or Justin Andrews (719.288.1423) if you have any questions. <br />ARCADIS <br />1687 Cole Blvd. <br />Suite 200 <br />Lakewood <br />Colorado 80401 <br />Tel 303.231.9115 <br />Fax 303.231.9571 <br />www.arcadis - us.com <br />Environmental <br />Date: <br />July 21, 2011 <br />Contact: <br />Chris Peters <br />Phone: <br />810.225.1905 <br />Email: <br />chris.peters@arcadis- <br />us.com <br />Our ref: <br />B0025510 <br />