1998-12-31_GENERAL DOCUMENTS - M1974052 (5)

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• • III IIIIIIIIIIII 1 .a :.A sss December 30, 1998 Carl Mount =CEIVED Division of Minerals and Geology 1313 Sherman Street DEC 31 1998 Denver, CO 80203 RE: Varra Coal Ash Project Ow, i dr rgnerals&GeoM Weld County Colorado CGRS No. 1-135-2755 Dear Mr. Mount: Enclosed please find the draft work plan for the Varra Coal Ash Burial Project. As we discussed the work plan is being submitted as a requirement for Technical Review of MLRB Permit No. M- 74-052. The required $150 fee is also enclosed. Please note that while the work plan describes in detail the laboratory testing methods and proposed field work, the work plan does not include analytical results or a discussion of analytical results as the laboratory testing has not been completed at this time. When all results have been received and tabulated, a final work plan will be submitted to all interested parties for review. We provided a copy of the draft work plan to Mr. Pose of your office as well. I have included a summary of analytical results available at this time (Table 2). The results are for water samples obtained fomm the Sequential Extraction Leaching Procedure (SELP), which is described in detail in the work plan. This test should represent the maximum leaching capability of a material, as it is an agitated extraction test. It is our belief that the non-agitated column leaching test will be most indickative of field conditions,and comparisons of pore volume Flow-through versUs concentration will be made to evaluate possible adverse impacts to waters of the State. If you have any questions regarding this letter or require further information, please contact me at (800) 288-2657. Sincerely, CGRS, INC. Y , Toby L Ad nms, P.G. al/Hydrogeologist Attachments cc w/o att: Mr. Chris Varra - Varra Companies \\CGRS HQ SERVERVoby\WINWORD\LETTERS\dmgcover.dw P.O. Box 1489 Fort Collins, CO 80522 Phone: (970)493-7780 Fax: (970) 493-7986