2001-12-07_REVISION - M1983067 (26)

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• ~ • Savage and Savage proctkd aolrRloruJ6renvdio+onaualproblems 164 Wat Sumac Cast 303 666.737! tekpme tad,vlaa Colorado 40027-2227 303 665frt08 6eaimik September 10, 2001 Terry McKee U.S. Army Corps of Engineers Denver Regulatory Office 9307 South Platte Canyon Road Littleton, CO 80128901 Re: Request for Isolation Concm~mnce for Stagecoach Property, Adams Colmty, Colorado Dear Mr. McKee: Savage and Savage conducted a wetland investigation of the Stagecoach property Sor Banks and Gesso LLC on behalf of LaFarge on August 29, 2001. The site is bcated myth of 124'" Strew and west of Brighton Blvd. (General Location Map) in Adams Coumy, Cobrado. The site is accessed by proceeding mrth on U.S. Highway 85 from the metropolitan area. From U.S. Highway 85 proceed west on 124'" Street to Brighton Blvd Tum mrth onto Brighton Blvd for approximately 0.4 mile to the property entrance. The latitude of the center of the project site is 39° 55' 33" North and the corresponding longitude is 104° 51' 49" West. The average elevation of the project site is 5,020 feet.. The property is located within the W%sNW'/. of Section 35, Township 1 South, Range 67 West of the Sixth Prime Meridian, Adams County, Colorado. Currently, the property is used for pasture. Adjacent land uses include oil and gas production, egricultlme, grazing, mineral extraction, a~ residential The project site comprises approximately 33 acres end sbpes gently from southeast to mrthwest. The South Platte River is the major hydrobgic feature on the site and forms a segmem of the mrthwest boundary of the site. There is one other .p..,~+~~ng feature on the site that meets the criteria for jurisdictional wethu3ds, a dugout or relict oxbow feature that contained water end a hydrophytic vegetation fringe during our investigation The interpretation of jurisdictional wetlands and wattrs of the United States was altered by a United States Supreme Court decision Solid Waste AFency of Northern Cook County v. U .S. Army Corps of End No. 99.1178 on January 9, 2001. We observed that the dugouUreGct oxbow met the throe criteria for jurisdictional wetlands in the Cotes 1987 wetland manual However, the dugout/reGct oxbow is mt surface connected to any tributary system (South Platte River), mr is the elevation of the feature within two feet of the ordinary high water mark of the South Platte River. Based on these observations, and the recent interpretation above, we have concluded that the dugout/relid oxbow is mt jurisdidbnaL