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p1MERICAN <br />SODA, L.L.P. <br />Celina Akin <br />Environmental Engineer <br />2717 County Road 215 <br />Parachute, CO 81635 <br />Thursday, October 14, 2004 <br />Telephone (970) 285-6500 <br />Facsimile (970) 285-6393 <br />RECEIVED <br />OCT 1 5 2'J04 <br />Ms. Erica Crosby <br />Colorado Division of Minerals and Geology <br />1313 Sherman Street, room 215 <br />Denver, CO 80203 <br />Dear Erica: <br />Qivision of Minerefs and Geotos~ <br />ENV235.04 <br />Enclosed are the modifications to Table 7 and Table 9 of Technical Revision #4 for Permit No. M-1999- <br />002 proposing to modify the ground water monitoring program for both the interim status and for <br />commercial production operations. <br />Yesterday, I prepared and sent graphs representing changes to the permit condition values based <br />upon statistical calculation of only the operational period of data. There were a few graphs where I did <br />not substitute the regulatory permit limits instead of the calculated values where applicable. These <br />graphs include boron for the Uinta wells and the lower aquifer wells and total dissolved solids for all <br />aquifers except the A-groove. Please substitute these graphs for the ones sent yesterday. <br />American Soda hopes that this response helps to further clarify your questions regarding Technical <br />Revision #4 for modification of the ground water monitoring plan. Should you have any additional <br />questions or comments regarding this information, please contact me at (970) 285-0406. <br />Sincerely, <br />Celina Akin <br />Environmental Engineer <br />Permit #: ~- -~Z Confidental?: u <br />Class: - ~ Type-Seq.: <br />From: Avnrnrruv~ U To: ~1 <br />Doc. Name: VtA~Q71fi(pnlM~O -W last <br />Doc. Date (if no date stamp): l0 -tom <br />Naiura/ Sodium Products For A Cleaner Environment <br />