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iii i iii iiiii iiiiiii <br />999 <br />`~~~ : DIVISION OF h11NER.1L5 AND GEOLOGY <br />~glartmrm nl Natural Resources <br />1 1 7 1 8hcrmdn il.. Room ? 1 i <br />Denver, Colorado 80203 <br />Ph~>nr. l P111 855755% <br />F\X.1101185?-81 U6 <br />June 3, 1999 `" <br />Mr. Kurt Nielsen <br />-(~: American Soda, LLC <br />c/o Steigers Corporation <br />6» I S. Revere Parkway, Suite 250 <br />Englewood, CO 801 1 1-64 1 1 <br />~oc. NwKG <br />RE:, Method Detection Limits for Water <br />Yankee Gulc rote~c .Fire ~M-9 <br />Dear Mr. Nielsen: <br />DIVISION O F <br />MINERALS <br />GEOLOGY <br />gECLA NATION <br />MI NING•SAFETY <br />B~II Owens <br />Governor <br />Oreq E. Watcher <br />Erecuove D~reaor <br />Michael B. Long <br />Division Director <br />Reference is made to the replacement Tables 2 and 3 to the "Ground Water and Surface Water Monitoring <br />Plan for the Yankee Gulch Sodium Minerals Project" provided by American Soda via facsimile on June 3, <br />1999. In accordance with discussions between American Soda and the Division of Minerals and Geology <br />(DMG), the replacement tables list method detection limits (MDL) that are lower than the ground water <br />standards of the Colorado Basic Standards for Ground Water. However, D[vIG is of the opinion, based on <br />standard practices for establishing numeric protection levels for ground water, that the MDLs listed in the <br />following table would be more appropriate to ground water characterization at the Yankee Gulch site. Test <br />methods are listed in the table as examples to demonstrate that the lower MDLs are achievable by standard <br />methods. American Soda may use alternate test methods with similar MDLs. The use of the lower MDLs <br />could be incorporated into the reclamation permit application, if approved by the Mined Land Reclamation <br />Board, as a condition to the approval. If you have any concerns with this proposal, please contact me or be <br />prepared to discuss them at the Pre-hearing Conference on June I5, 1999. <br />Pazameter wt Te'stMt:tho'd~ 1vIDLY=-~~s=,~l~; <br />Cadmium EPA 239.2 0.0003 m <br />Co er EPA 200.7 0.004 m~ <br />Silver EPA 272.2 0.0002 m <br />Chloride EPA 325.3 5.0 mJL <br />Sincerely, <br />Allen C. Sorenson <br />Reclamation Specialist <br />cc: Hal Copeland, Steigers Corporation <br />• <br />STATE OF COLORADO <br />c:\wimdowslpersonallamtrtcan soda seventetn.doc <br />