1996-05-02_REVISION - M1980244

• Permit No: M1980244
• IBM Index Class Name: Revision
• Doc Date: 5/2/1996
• Doc Name: CRIPPLE CREEK & VICTOR GOLD CO EXPANDED AREA FOR SOIL LINER FILL SUBMISSION OF SPECIFICATIONS & TEST
• Type & Sequence: TR21
• Media Type: D
• Archive: No

CC&V Gold Mng . ID : APR 30 '96 20 :28 No .030 P .01
C C Cripple Creek And Victor Gold Mining Company
f� A jow venture-MCI&Peek Mining CQMP*nr,AID yga
Operations Office Englewood Office
LX. P.O. Box 191,2755 Slate Highway 87 P.O. Box 5078. 5251 DTC Parkway,Suite 700
victor. CO 60800 Englowood, CO 80155
[phone]•FAX [phone] [phone]• FAX[phone]
April 30, 1996
SENT CERTIFIED RETURN RECEIPT REQUESTED
Mr. Berhan Kcffelcw,
Environmental Protection Specialist
Colorado Department of Natural Resources
Division of Mines and Geology
Office of Mined land Reclamation
1313 Sherman Street, Room 215
Denver, Colorado 80203
Reference: Cresson Project: Permit M-80-2441 Cxpanded Area For Soil Liner Fill
Submission Of Specifications and Test Results.
Dear Mr. Keffelew;
In order that the Cripple Creek & Victor Gold Mining Company ("CC&V") may be assured of
adequate clay other than the Ironclad material for 1996 construction, CC&V submitted, as part
of its technical revisions dated January 9, 1996, an additional material specification for Soil
Liner Fill. This imatcrial would come front an area nc-.r the primary crusher. CC&V now
wishes to add a slightly different material classification based oil the characterization of an
additional native clay area in approximately the sarne area.
In 1996, CC&V expanded life exploration and testing for Soil Liner Fill to an additional area
of fife same general type of material as the "Area 2" material described, tested, and reported in
our letter of January 9, 1996. In the process, we have identified an area with better
characteristics in terms of accessibility for extraction. The grain-size gradation met by this
material, upon screening or oversize, differs slightly from the two Soil Liner Fill gradations
currently in the Technical Specifications (that for the Ironclad material and that added in the
January 9, 1996 technical revision for "Area 2" material). Therefore, CC&V wishes to submit
an additional gradation specification for Soil Liner Fill that may then be the principal gradation
for 1996 construction, provided adequate material is found in the area.
The attached letter from Golder Associates reports the results of the testing (Attachment 1).
Grain size distributions were developed, permeability tests were performed, and the cation
exchange test was conducted. in addition, the interface shear test with Drain Cover Fill was
conducted using 80 mil textured Linear Low Density Polyethylene ("T.I.DPE") between the Soil
Liner Fill and the Drain Cover Fill, with the textured-side of the LLDPE facing the Soil Liner
Fill.
I