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In 1982, the Colorado Division of Reclamation, Mining, and Safety ( CDRMS) issued permit number M- 1982 -015 to Siegriest Construction Company for sand and gravel mining along the north bank of the St. Vrain River located in Section 4 of Township 3 North, Range 68 West, Sixth Principal Meridian (Figure 1) (Site). On October 20, 2006, CDRMS approved the transfer of permit and succession of operators from Siegriest Construction Company to Carma Bayshore, LLC (Carma Bayshore). Sand and gravel mining operations have ceased and the property is undergoing reclamation in accordance with the rules and regulations of the CDRMS. LT Environmental, Inc. (LTE) has written this weed management plan in response to the CDRM inspection report dated July 19, 2011. The weed management plan was written with the long- term goals of Carma Bayshore to develop the Site and adjacent land into a marketable, aesthetically - pleasing residential housing subdivision. This weed management plan applies to the area covered under the CDRMS jurisdiction (permit boundary) (Figure 2); it does not include areas owned or operated by Carma Bayshore that are located outside the permit boundary. 2.1 LOCATION AND HISTORY The St. Vrain Lakes proposed subdivision is located in Weld County, Colorado, east of interstate 25 and south of County Road 9 Y2 in Section 35, Township 3 North, Range 68 West (Figure 1). The southern portion of the property was previously used for sand and gravel mining operations (Colorado Division of Reclamation, Mining, and Safety (CDRMS) Permit No. M- 1982 -015) and is being reclaimed (Figure 2). The former sand and gravel mining operations have been structured into two lakes on the property along the north bank of the St. Vrain River. The lakes have been completely isolated from groundwater inflow and outflow via the installation of a slurry wall and were recently filled with water pumped from the St. Vrain River. The property north of the lakes will eventually become a residential housing subdivision and the lakes will be an amenity for the homeowners. This weed management plan applies to only the area under the CDRMS permit (Figure 2). 2.2 BIOLOGICAL RESOURCES There are four primary habitats on the property: riverine in the St. Vrain River, lacustrine in the lakes, riparian adjacent to the St. Vrain River and in select areas on the banks of the lakes, and upland prairie. Weeds are located in all four habitats. 2.2.1 Riverine 1.0 INTRODUCTION 2.0 PROPERTY DESCRIPTION Vegetation along the St. Vrain River consists of cottonwood trees, willows, the noxious weed salt cedar, and other vegetation. Weed Management Plan 1 47,7