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<br />-in- )q77-30c) <br />STATE OF COLORADO <br />Bill Ritter, Jr., Governor <br />James B. Martin, Executive Director <br />Dedicated to protecting and improving the health and environment of the people of Colorado <br />4300 Cherry Creek Dr. S. Laboratory Services Division <br />Denver, Colorado 80246-1530 8100 Lowry Blvd. <br />Phone (303) 692-2000 Denver, Colorado 80230-6928 <br />TDD Line (303) 691-7700 (303) 692-3090 <br />Located in Glendale, Colorado <br />http://www,cdphe.state.co.us <br />OF' COQ <br />?e ? 90 <br />' O <br />* 1876 <br />Colorado Department <br />of Public Health <br />and Environment <br />NOV 10 [uU9 <br />Randy Whicker <br />,otter Canon City Milling Facility <br />P. O. Box 1750 <br />Canon City, Colorado 81215-1750 <br />RE: Schwartzwalder Mine Decommissioning Plan <br />Radioactive Materials License No. CO-369-03 <br />Dear Mr. Whicker: <br /> <br />A report entitled Decommissioning Plan for Termination of Radioactive Materials License CO-369-03, <br />Schwartzwalder Mine, Golden Colorado dated October 28, 2009 was received by the Colorado <br />Department of Public Health and Environment (the Department) on October 28, 2009. This report has <br />been reviewed. <br />Our comments and issues are stated below: <br />§ 1.3 Please cite reports documenting the implementation of approved reclamation plans. <br />§2.2 Please cite the letter or other supporting documentation, if any, from CDPHE that support <br />successful remediation. <br />§3.2 Please expand the list of risk scenarios presented as part of the RESRAD analysis. Specifically, <br />the residential and commercial use scenarios. <br />§4.3.3 Item 4: soils will be wetted during excavation to reduce dust. <br />Item 6: The correlation between gamma detector response and Ra-226 concentrations in soil will <br />need to be demonstrated. A correlation coefficient of 0.90 or better is expected. <br />§5.0 Termination of the RAM License does not necessarily mean that the site has un-restricted use. <br />The facility is still regulated by the Colorado Division of Reclamation, Mining, and Safety. <br />4-11:11