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•GCC <br />%" Rfo Gronde <br />May 15, 2008 <br />~ks~.~ <br />f - zv~- o~ <br />Mr. Berhan Keffelew <br />Hydrogeologist <br />Division of Reclamation, Mining, and Safety <br />1313 Sherman Street ~ , ~o~a---~ <br />Room 215 <br />Denver, CO 80203 <br />Re: DBMS Request for Information -Status Update and Request for Time Cxtension <br />Dear Mr. Keffelew, <br />I write regarding the Division of Reclamation, Mining and Safety (DBMS) request for <br />information regarding GCC Rio Grande's (GCC) portland cement manufacturing facility and <br />associated limestone quarry located in Pueblo, Colorado. This facility has been granted DRMS <br />permit M-2002-004. GCC received this request for information in the first part of March, 2008. <br />Among other things the DRMS has requested the following: <br />• Labeling of on-site monitor wells; <br />• Additional sampling and analysis of groundwater from on-site monitor and production wells; <br />• Proposed location of an additional groundwater monitoring well between the production <br />facility and the St. Charles River; <br />• Design information pertaining to GCC's onsite water treatment plant; <br />• Information regarding construction "as-built" changes to the production facility. <br />GCC has made much progress with regard to developing responses to these items. Groundwater <br />monitoring wells MW-OOIA, MW-002, MW-003, and MW-004 have all been labeled. Sampling <br />of groundwater monitoring wells MW-002, MW-003, and MW-004 has been completed. <br />Sampling of monitoring well MW-OOIA was attempted but was determined to be dry and thus <br />was not sampled. Groundwater production wells DW-O1 and DW-021ocated within the plant <br />area have also been sampled. These groundwater samples are currently being analyzed and <br />complete results should be available soon. <br />GCC has also determined potential locations for an additional groundwater monitoring well <br />between the production plant and the St. Charles River. GCC is in the process of obtaining <br />contractor bids for performing this work. However, prior to well installation, GCC would like to <br />discuss the poteraLial location of the well with the Division for their input. We look forward to <br />this discussion and the finalization of this work. <br />While GCC is in the process of gathering requested information on the onsite water treatment <br />plant, this activity is not yet complete. Construction on the water treatment plant has not been <br />fully completed and this facility is not yet operational. GCC will continue the information <br />gathering process with regard to the water treatment plant as well as continue to update the <br />Division with regard to the status of this facility. The Division's request for the facility "as- <br />