HYDRO20180

• Permit No: C1991078
• IBM Index Class Name: Hydrology
• Doc Date: 1/6/1988
• Doc Name: WELL CONSTRUCTION & WATER QUALITY INFORMATION LILLYLANDS COAL CO
• From: MLRD
• To: DAVID ANDREWS
• Permit Index Doc Type: CORRESPONDENCE
• Media Type: D
• Archive: No

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STATE OF COLORADO
Roy Romer, Gove~
DEPARTMENT OF NATURAL RESOURCES
MINED LAND RECLAMATION DIVISION
FRED R. BANTA, Director
January 6, 1988
Mr. David Andrews
P.O. Box 204
Redvale, Colorado 81431
Re: Well Construction and Water Quality Information, Lilylands Coal Company
Dear Mr. Andrews:
The enclosed material provides information on the location and design of
monitoring wells. After reviewing this material, and prior to drilling, you
should submit the following design information to us for initial approval:
a. well diameter;
b. probable depth;
c. probable perforated interval;
d. size and distribution of perforations;
e. type of material, locations, and thicknesses used for
i, casing;
ii. packers;
iii, screens;
iv. packing material;
v. sealants (grout, etc.);
f. well development methods performed following completion.
Following drilling, completion records for each well should be prepared which
document actual construction and development, the elevation to the top of the
casing, the location(s) and thicknesses of water bearing zones within the
well, and the stratigraphy associated with the site, including lithologies
(rock types) and thicknesses.
423 Centennial Building, 1313 Sherman Street Denver, Colorado 80203-2273 Tel. [phone]