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ENS RECEIVED <br /> Department of Energy MAY 2 7 2025 <br /> � r Washington, DC 20585 <br /> �S`�ATES�P May 22, 2025 Colorado Division of Reclamation, <br /> Mining and Saftey <br /> OLM-KC-2025-041 <br /> Mr. Ben Hammar, Environmental Protection Specialist <br /> Colorado Division of Mining, Reclamation and Safety <br /> 1313 Sherman Street, Room 215 <br /> Denver, CO 80203 <br /> Subject: BURNCO Colorado, LLC <br /> Construction Materials Regular(112) Operation Reclamation Permit <br /> Application Amendment 01 —Rocky Flats Pit File No. M-1987-113 <br /> Objection and Comment <br /> Dear Mr. Hammar: <br /> The United States Department of Energy (DOE) Office of Legacy Management provides <br /> the following objection and comments for your consideration regarding the Permit <br /> Amendment for the Rocky Flats Pit submitted by BURNCO Colorado, LLC on April 25, <br /> 2025. DOE currently owns the land where the current Permit is placed and opposes the <br /> proposed Amendment that would allow for Developed Water Storage at the Rocky Flats <br /> Pit. The objection is based upon the scope of the Rocky Flats National Wildlife Refuge <br /> Act of 2001 (the Refuge Act) and its intended purposes. The current usage of this <br /> property as enacted, raises concerns that a developed water storage feature could impact <br /> the cleanup remedy at the Rocky Flats Site. <br /> A water storage feature located upstream of the Rocky Flats Site has the potential to <br /> affect the existing remedy designed to protect human health and the environment. This <br /> could include mobilizing contamination, increasing the volume of water flowing through <br /> the on-site treatment systems, and altering the hydrologic balance of the area, which may <br /> lead to slope instability. The reclamation plan submitted by the operator has not <br /> demonstrated how it will minimize disturbances to the current hydrologic balance at the <br /> Rocky Flats site. <br /> Additionally,the Refuge Act designates the Rocky Flats Pit to remain under federal <br /> ownership indefinitely,unless Congress decides otherwise. The Rocky Flats National <br /> Wildlife Refuge Comprehensive Conservation Plan and Environmental Impact Statement <br /> (CCP/EIS), issued in September 2004, outlines the following purposes for the Refuge: <br /> 1. Restoring and preserving native ecosystems. <br /> 2. Providing habitat for, and population management of native plants and <br /> migratory and resident wildlife. <br /> 3. Conserving threatened and endangered species. <br /> 4. Offering opportunities for compatible scientific research. <br />