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Natural Resources Assessment
<br />P125 Gravel Mine - Southwest of State Highway 66 and County Road 17
<br />Weld County, Colorado
<br />
<br />ERO Project #24-180 21
<br />ERO Resources Corporation
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<br />https://www.lrh.usace.army.mil/Portals/38/docs/USACE%2087%20Wetland%20Delineation%20
<br />Manual.pdf.
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<br />Report.” Prepared for the Office of the Program Manager, Rocky Mountain Arsenal
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<br />Burrowing Owls in Saskatchewan.” The Journal of Wildlife Management 54 (1): 27–35.
<br />https://doi.org/10.2307/3808896.
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<br />Martell, M. 1992. “Bald Eagle Winter Management Guidelines.” U.S. Fish and Wildlife 21 Service.
<br />McDonald, David, Nicole M. Korfanta, and Sarah J. Lantz. 2004. “The Burrowing Owl (Athene
<br />Cunicularia): A Technical Conservation Assessment.” Prepared for the USDA Forest Service,
<br />Rocky Mountain Region, Species Conservation Project.
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<br />w/nepa/91137_FSPLT3_2553024.pdf.
<br />Natural Diversity Information Source. 2021. “Natural Diversity Information Source.” Colorado Parks and
<br />Wildlife: Colorado Hunting Atlas. 2021.
<br />https://ndismaps.nrel.colostate.edu/index.html?app=HuntingAtlas.
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<br />Daily, Juan Carlos Castilla, Jane Lubchenco, and Robert T. Paine. 1996. “Challenges in the Quest
<br />for Keystone Species.” BioScience 46 (8): 609–20. https://doi.org/10.2307/1312990.
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<br />Associated Species in Western South Dakota.” The Great Basin Naturalist 50 (4): 339–45.
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