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~~cmcx <br />Ms. Erica Crosby <br />Environmental Protection Specialist <br />Division of Minerals and Geology <br />Colorado Department of Natural Resources <br />1313 Sherman Street, Room 215 <br />Denver, Colorado 80203 <br />RE: CEMEX, Inc., Lyons Mine, Permit No. M-1977-208 <br />Groundwater Response Plan Extension and Response to Inspection <br />Dear Ms. Crosby, <br />Via Certified Mail <br />Return Receipt Requested <br />7002 24100001 8100 7137 <br />In response to your request for a groundwater response plan dated June 18, 2004, CEMEX <br />respectfully requests to extend the submittal deadline from July 26, 2004 to August 30, 2004. <br />We require this extension because we have yet to receive the results of the samples taken on June <br />24, 2004. This information is vital in developing the groundwater response plan. Furthermore, <br />we have been unable to make progress due the unforeseen absence of our key consultant due to <br />family emergency. <br />Based upon our discussion during your inspection on June 24, 2004 and our telephone <br />conversation on July 19, 2004, CEMEX will immediately increase the grab sample monitoring in <br />A-Pit and C-Pit from semiannual to biweekly. We have contracted with Pazagon Analytical to <br />conduct the following testing. The first sample is scheduled to be taken on July 28, 2004. <br />Parameter Anal tical Method <br />H EPA 150.1 <br />S ecific Conductance EPA 120.1 <br />Selenium, dissolved EPA 7740 <br />Thallium, dissolved EPA 7841 <br />Additionally, CEMEX has secured a wildlife biologist who conducted a site survey of wildlife <br />and habitat on July 21, 2004. If you have any questions regarding this letter, please contact me <br />at (303) 823-2115. <br />Sincerely, <br />~~ <br />Eric S. Hodek <br />Environmental Manager <br />Cc: Paul Banks, Banks and Gesso LLC <br />R~~'~°'t~'~~ <br />JUL 26 2004 <br />Giyision of Minerals & Geology JUIy 23, 2004 <br />United States Gperatlons <br />P.O. Box 529, Lyons, Colorado 80540, USA, Phone: (303) 823.2100, Fax: (3031 823-2199 <br />