REV14879

• Permit No: M1977196
• IBM Index Class Name: Revision
• Doc Date: 9/18/1999
• Doc Name: HYDRO REVIEW M-77-196
• From: DMG
• To: LARRY OHELER
• Type & Sequence: CN1
• Media Type: D
• Archive: No

~ ~ III IIIIIIIIIIIII III
STATE OF COLORADO
DIVISION OF MINERALS AND GEOLOGY
Department of Natural Resources
1313 Sherman SI., Room 215
Denver, Colorado 80203
Phone: [phone]
FAX: [phone]
September 18, 1999
To: Larry Oheler
From: Berhan Keffelew ~,r.
Re: Hydro Review M-77-196
DIVISION OF
MINERALS
GEOLOGY
RECLAMATION
MINING•SAFETY
Bill Owens
Governor
Greg E. Watcher
Execulrve Director
Michael B Long
Division Dneaor
As you requested, I have reviewed the permit application for possible impacts to the Hydrologic
balance. The focus of the review was to deternrine if the mining operation as proposed will
impact adjacent wells. Few objectors to the permit conversion had stated in their letter that the
possible expansion could cause well contamination and yield loss.
In addition to the permit application, top maps ,permitted well data for sections 5 and 6 and a
site inspection of the proposed permit area were utilized in the review process. I have also
conversed with Mr. Thomas Livern3an, one of the objectors who raised water issues while in the
area. According to State Engineers record, there are 62 permitted wells in section 5 and 78 in
section 6. The yield for these wells range from 0-30 g.p.m. Well depths range from 8 feet in the
sallow alluvium aquifers to 410 feet in the bed rock aquifer. Static water elevation ranged from 8
feet to the shallow alluvium aquifer to 198 feet for the deep well. The shallow alluvium aquifers
appear to get most of their recharge from the Arkansas river. In the adjacent to the proposed
permit area, well depths range from 42 feet to 100 feet. The depth of the proposed mining in the
azea will be from 20 feet [0 50 feet in the North East comeyfrom the surface. The total acreage to
be disturbed with in the proposed operation is 24 acres. No ground water will either be exposed
or impounded on site. No blasting is proposed for mining the aggregate. Only front end loaders
and dozers will be used during mining. Diesel fileling area will be properly protected in
accordance with the rules and regulation. Even if small spills occur , it is very unlikely for it to
reach these adjacent wells. The down ward mobility of petroleum by products had been studied
extensively. All pertinent literature to date shows the likely hood of a contaminant reaching
ground water from small spills that could occur from such operations under the conditions as
proposed to be very minimum. Reclamation of the site calls for leaving 6"[0 12" of gravel plate
in the pi[ floor and only topsoil and seed the back slope azeas.
Therefore, it is very unlikely for this operation as proposed [o impact any adjacent wells either
through contamination or yield loss.
CC: James Stevens