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SCHLAGE Part of worldwide Ingersoll-Rand Carl "Bud" Herskind, President Transit Mix Concrete Company 444 East Costilla Colorado Springs, CO 80903 RE. APPROVAL OF PROPOSED WELL LOCATIONS GROUNDWATER REMEDIATION PROGRAM Mr. Herskind: Security Operations Schlage Lock Company 3899 Hancock Expressway Security, Colorado 80911 (719) 390-5071 July 14, 1997 As we have discussed, Schlage Lock Company is proposing to drill several new extraction wells on property owned by Transit Mix Concrete Company. The proposed extraction wells are part of an ongoing groundwater remediation program. In accordance with the Access and Use Agreement of September 13, 1996, we are requesting your approval of proposed well locations that are on your property. The proposed extraction wells will be drilled at the locations indicated as EW-2 Extraction on the enclosed Figure 1. We propose to drill about four deep extraction wells and ten to twelve shallow extraction wells. The combined pumping rate for the deep wells will be about 320 gallons per minute. The shallow wells will be pumped at a combined rate of about 40 gallons per minute. The extracted water will be treated, then re-injected at a rate of about 370 gallons per minute through injection wells located west of the treatment building (Figure 1). The proposed extraction and injection wells will be located approximately as described in the Workplan for Installing Groundwater Interception Wells, t't a copy of which was submitted earlier for your review. The well locations have been staked near the southern edge of the open area, just north of the tree line. This area provides acceptable interception of the contaminated groundwater but avoids possible interference with future mining activities. However, some of the well locations are within 500 to 600 feet of existing domestic wells owned by Transit Mix Concrete Company (Figure 1). Tl1e domestic wells are on property currently leased by the Cannon family (Well R- 7) and the Orvis family (Well R-6). The Colorado State Engineer's Office requires approval from existing well owners before drilling a new well within 600 feet of any existing well. Approval can be obtained by having the existing well owner sign a form called the "600 Foot Well Spacing Statement." Wit11 approval by the existing well owner, the State Engineer can act on the new well application without seeking hearing testimony from the existing well owner. t'1 Tredwell & Rollo and S. S. Papadopulos & Associates, [nc., June 1997.