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ARCADIS <br /> ARCADIS <br /> 1687 Cole Blvd. <br /> Suite 200 <br /> Lakewood <br /> Colorado 80401 <br /> Mr. Timothy A. Cazier, P.E. Tel 303.231.911 5 <br /> /Environmental Protection Specialist Fax 303.231.9571 <br /> Colorado Division of Mining Reclamation and Safety www.arcadis-us.com <br /> Department of Natural Resources <br /> 1313 Sherman Street, Room 215 <br /> Denver, Colorado 80203 <br /> Environmental <br /> Subject: <br /> Holcim (US) Inc. Portland, Colorado <br /> larch 2014 Groundwater Monitoring Report <br /> DRMS Permit No. M-1�77-344, Technical Revision No. 6 Date: <br /> �/ July 9, 2014 <br /> Dear Mr. Cazier: <br /> Contact: <br /> On behalf of Holcim (US) Inc. (Holcim), please find enclosed one copy of the Final Chris Peters <br /> March 2014 Groundwater Monitoring Report, which summarizes analytical results for <br /> groundwater samples collected on March 19, 2014. Phone: <br /> 810.225.1905 <br /> March 2014 sampling results indicate that sodium concentration in groundwater from Email: <br /> MW-7 remains slightly higher than the NPL. No other analytes were above the NPL for chris.peters@arcadis- <br /> MW-7. Additionally, no analytes exceeded the NPLs for groundwater from MW-13. us.com <br /> Based on March 2014 sampling results that indicate there is no discernible impact from Our ref: <br /> CKD, ARCADIS recommends that annual groundwater monitoring continue unless B0025510 <br /> future results require in increased monitoring frequency. <br /> Please contact me or Justin Andrews (719.288.1423) if you have any questions. <br /> Sincerely, <br /> ARCADIS <br /> V <br /> Christopher S. Peters, CPG RECEIVED <br /> Vice President <br /> Copies: <br /> ✓JUL 1 1 2014 <br /> Justin Andrews, Holcim (US) Inc. ��� <br /> Lauri Yusko, ARCADIS YIONOFRE LAMAT" <br /> File WDy <br /> Imagine the result <br />