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/? N(12, CIS C January 23. 2003 To: Chris LaRue, Adams County, Colorado Department of Planning and Development 4955 E. 74' Ave. Commerce City, CO 80022-1535 RE: Case Number: EXG2002-00004 Case Name: 120`h Estates Partners P.O. Box 1161, Commerce City, CO 80022 From: Don and Jeanne Off Partnership P.O. Box 550 10495 E. 120th Ave. Henderson, CO 80640-0550 303-659-6125 RECEIVED JAM, 2 8; 2003 303-287-8240 Division of Minerals and GtOb f. Additional Comments: We don't believe the French Drain proposed by 120`' Estates Partners is the solution to prevent our shallow irrigation well from going dry or having a very diminished pumping rate when the soil-bentonite slurry wall is in place. It is Central Colorado Water Conservancy District augmented well permit number 12992, case number W-5311, location SE SE 34 01S 67W which pumps 500 gallons per minute. A French Drain needs maintenance. Les Ewegen wants to install it, then never have any future obligation. We don't think enough water would be collected by the French Drain for us to pump into a 5 inch pipe under pressure to operate a rolling sprinkler with 26 sprinkler heads as our irrigation well does now. This well is 139 feet from the property line. We also question whether the $10,000.00 escrow account proposed by 120th Estates Partners will be sufficient to cover the costs of an acceptable solution such as a deeper well or a new well in an acceptable location. We have retained hydrologist Benjamin P. Doty P.E. to provide expert information in this matter. You can expect to receive a letter from him. A second matter is 120' Estates Partners desire to mine to ten feet from our common property line. Adams County requires mining be at least 125 feet from a residence. Ten feet from the property line would put the gravel mine closer to our residence which is 59 feet from the property line. The solution is to mine no closer than 125 feet from our home or 66 feet from the property line. When mining is done and reclamation complete a six foot county approved fence with three strands of barbed wire above it must surround the water storage lake. If the resulting lake has an undertow, preventing recreational use in addition to water storage makes sense, but reduces our property value. Possible solutions are reclamation without undertow so the lake is: 1. An attractive multi use amenity for recreational use by all property owners impacted for five years by the noise, dust, truck traffic, and impaired wells. 120" Estates Partners should try to increase our property values instead of diminishing them. Zoning of our property is RE, a classification intended to upgrade the area. 2. Planting trees in addition to grasses if use of the lake could not include fishing and row boats. Sin erely, Signed: Do ff io"? Signed: Jeanne Off Don and Jeanne Off Partnership Cc: Division of Minerals and Geology