GENERAL41066

• Permit No: M1999002
• IBM Index Class Name: General Documents
• Doc Date: 3/10/2004
• Doc Name: Revised Cavity Characterization Plan
• From: American Soda LLP
• To: DMG
• Media Type: D
• Archive: No

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AMERICAN ~/ ~S ~d Cooley
S O D A, L L P Environmental Health and
Safety Manager
2717 County Road 215
Parachute, CO 81635
Friday, March 05, 2004
Allen Sorenson v
Colorado Division of Minerals and Geology
Department of Natural Resources
1313 Sherman Street, Room 215
Denver, Colorado 80203
Re:
Dear Allen:
Direct Line (970) 2850407
International Telephone [phone]
General Facsimile [phone]

MAR i p 10Qq ENV.51.04
Division of Minerals and Geology
1/
Revised Cavity Characterizatlon Plan
American Soda presented a plan to determine the shape of the solution mining cavities being
developed at the Yankee Gulch Sodium Minerals Project in Rio Blanco County, Colorado to
the EPA, BLM and CDMG at a meeting held on December 16, 2003.
At the conclusion of that meeting it was determined that a revised Cavity Characterization
Plan would be developed by American Soda and presented to the agencies for review prior
to the next meeting which was held on Wednesday February 19, 2004.
Discussions from the meeting of February 19, 2004, and a review of permits associated with the
solution mining of Nacholite on the Yankee Gulch Sodium Minerals Leases have resulted in the
following actions:
A revision to Section 3 of the BLM Commercial Mine Plan has been made to allow for
extending well diameter beyond 200 feet to test maximum production capacity while
maintaining cavity integrity.
Review of the Area Wide UIC Permit does not indicate any limitation for extending the well
diameter,
Review of the 112 Reclamation Permit does not indicate any limitation for extending well
diameter.
Affer consulting with the EPA, BLM and CDMG, American Soda is planning to proceed with
Alternative 2 of the ASLLP Solution Mining Cavity Characterization Plan,
Delivering a Crystal Clear Advantage
www.americansoda.com