PERMFILE49619

• Permit No: M1997084
• IBM Index Class Name: Permit File
• Doc Date: 10/17/1997
• Doc Name: MEMPHIS FN M-97-084 110 CONSTRUCTION MATERIALS APPLICATION ADEQUACY REVIEW LETTER
• From: DMG
• To: OURAY ASSOC LLC
• Media Type: D
• Archive: No

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STATE OF COLORADO
DIVISION OF MINERALS AND GEOLOGY
Depanmenl of Natural Resources
131 3 Sherman Sl.. Room 215
Denver, Colorado 80203
Phone: [phone]
FA%:1303) 83L8106
October 17, 1997
Mr. James Poulos
Ouray Associates LLC
4025 Easley Road
Golden CO 80403

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Executive Director
Michael e. Lang
Dinsion Director
Re: Memphis Site, File No. M-97-084, 110 Construction Materials Application
Adequacy Review Letter.
Dear Mr. Poulos,
I have completed my preliminary review of the above-named application, based on its technical
merit. I have the benefit of having already visited the site, and so can eliminate some of my initial
questions and concerns, which were "answered" while onsite. Overall the application is well
prepared, and the proposed operation is fairly straightforward. My review includes the revised
material submitted subsequent to the original packet, dated September 29, 199'1. There are,
however, still several items which must be addressed or resolved before the Division can make its
decision on the application. I have arranged my comments in the following paragraphs in the
order ofthe section ofthe application or exhibit to which they pertain.
Application -Item 5, page 1
The primary commodities are listed as "waste rock and alluvium". Does "waste rock" pertain to
that material discarded from the uphill historic gold mines? My observations during the site visit
indicate the presence of some mineralization in that alluvial fan. If it is mine waste, please provide
additional characterization of that material. (This question is again raised about Application Item
12, where "limonite" is named as present, which has some relation to pyritic material.) Please
explain the statement that there is no acid generating potential.
Exhibit A -Site Description
Based solely on observations made during the site visit, I think additional information should be
included in the exhibit about the previous mining activity and topography immediately to the east
of the permit area, inasmuch as the permit area is strongly influenced by the adjacent offsite Land.
Exhibit B -Location Map
The question concerning this exhibit is similar to that for Exhibit A, and refers ';o providing
information about the topography and watershed pertinent to the area lying to the east. This
should probably include the locations ofpre-existing metal mining features, e.g., portals,
structures, waste or ore piles, discharges, etc.