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<br />ERO Project #24-180 1 <br />ERO Resources Corporation <br />Natural Resources Assessment <br />P125 Gravel Mine <br />Southwest of State Highway 66 and County Road 17 <br />Weld County, Colorado <br /> <br />September 20, 2024 <br /> <br /> <br />Introduction <br />Raptor Materials retained ERO Resources Corporation (ERO) to provide a natural resources assessment <br />for the P125 Gravel Mine property (project) southwest of the intersection of State Highway 66 and <br />County Road 17 in Longmont, Weld County, Colorado (project area; Figure 1). On July 11 and July 12, <br />2024, Marie Russo and Ashlee Caruana, biologists with ERO, assessed the project area for natural <br />resources (2024 site visit). During this assessment, activities included a delineation of potential wetlands <br />and other waters of the U.S. (WOTUS); identification of suitable habitat for federally listed threatened, <br />endangered, and candidate (T&E) species; and identification of other natural resources. This report <br />provides information on existing site conditions and resources, as well as current regulatory guidelines <br />related to those resources. ERO assumes the landowner is responsible for obtaining all federal, state, <br />and local permits for construction of the project. <br />The natural resources and associated regulations described in this report are valid as of the date of this <br />report and may be relied upon for the specific use for which it was prepared by ERO under contract to <br />Raptor Materials. Because of their dynamic natures, site conditions and regulations should be <br />reconfirmed by a qualified consultant before relying on this report for a use other than that for which <br />ERO was contracted. <br />Project Area Location <br />The project area is in Section 29, Township 3 North, Range 67 West of the 6th Principal Meridian in Weld <br />County, Colorado (Figure 1). The UTM coordinates for the approximate center of the project area are <br />507688mE, 4449436mN, Zone 13 North. The longitude/latitude of the project area is <br />104.909671°W/40.195283°N. The elevation of the project area is approximately 4,790 feet above sea <br />level. Photo points of the project area are shown on Figure 2, and the photo log is in Appendix A. <br />