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M ' • CONTRACTORS ENGINEERS DEVELOPERS I ~MORRISON-KNUDSEN COMPANY, INC. E%ECUTIVE OFFICE M OPBISON~KNU DSEN PLAZA PO BO%]800/BOISE. IDANOUSA B9]29 PHONE. (ZOB~ ]865000/TELE% ]6B<d9 April 22, 1987 Ms. Catherine W. Begej Reclamation Specialist Mined Land Reclamation Division 423 Centennial Building 1313 Sherman Street Denver, Colorado 80203 Dear Cathy: • III IIIIIIIIIIIIIIII 999 ~~~~~~~® APR 2 41981 MINED LAND CiECLAMATION DIVISION The following plan is submitted in response to Stipulation No. 3 of the Findings Document for Permit No. C-003-80, dated January 23, 1987, and has been prepared to address the Division's concerns with the quality of monitoring well samples. Due to the accumulation of snow and the resulting wet ground and road conditions, the spring ground water monitoring is not scheduled until May 4. Therefore, a complete evaluation of the mine area wells can not be completed by May 15. We propose to submit the revised ground water monitoring plan for monitoring the lower and upper coal units by June 15, 1987 and request an extension of the date stipulated. Prior to the evacuation of standing water from the wells, water levels will be determined and samples will be collected for analysis of the following parameters: pH, temperature, electrical conductivity, calcium, sodium, carbonate, sulfate, and hydroxide. These parameters were selected because elevated concentrations would indicate the presence of grout dissolved in the water. The wells will then be blown standing water. As soon as sampling, samples will be parameters again. The wells recharge, and sampled for monitoring plan. out with compressed nitrogen to remove all water levels indicate sufficient volume for collected and analyzed for the indicator will then be blown out again, allowed to the complete list of parameters in the 2784h/1