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January 15, 2004 Mr. Anthony J. Waldron Environmental Protection Specialist Division of Minerals and Geology Department of Natural Resources 1313 Sherman St., Room 215 Denver, Colorado 80203 Subject: Transmittal of Groundwater Analytical Results GCC Rio Grande Red Rock Plant and Limestone Mine Pueblo, Colorado File No. M-2002-004 November 2003 Sampling Results Dear Mr. Waldron: With this letter, Brown and Caldwell is transmitting to the Division of Minerals and Geology (DMG) the analytical results fox groundwater samples collected at the GCC Rio Grande Red Rock Plant and Limestone Mine Site. Samples were collected and analyzed to satisfy Condition #1 of the Mined Land Reclamation Board's approval of GCC Rio Grande's 112c mining permit application: Baseline Water Quality Sampling. Groundwater sampling for the month of November 2003 was conducted on November 25, 2003. Sampling methods followed those outlined in the Condition # 1 Groundwater Sampling Plan dated March 2003. Groundwater samples were collected from the Saint Charles River alluvial aquifer at monitoring well locations MW-002 and MW-004. Groundwater was not detected in monitoring wells MW-OOlA and MW-003; therefore, MW-OOlA and MW-003 could not be sampled. Since the pump for DW-1 was not in place at the time of sampling, no samples were taken of the DW-1 Dakota aquifer well. Samples were analyzed fox the parameters listed in Condition #1. The analytical results are summarized in Tables 1, 2, 3, and 4. Attachment A presents copies of the analytical reports prepared by ACZ Laboratories, Inc. and Reservoirs Environmental, Inc. Sample D-8 is a duplicate sample collected from monitoring well MW-002. Sample MW-006 is an equipment blank collected by pouring bottled distilled water over equipment used at multiple monitoring well locations. \IBCDEN031projecls\DalalGENIFS-P-71224211S1ipulaCion RespouselGroundwater SamplinglSampling ResultsINov 2003Wov 2003 DMG L.e[[ecdoc