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HYDRO23189
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Last modified
8/24/2016 8:43:49 PM
Creation date
11/20/2007 3:36:12 PM
Metadata
Fields
Template:
DRMS Permit Index
Permit No
C1992080
IBM Index Class Name
Hydrology
Doc Date
5/22/1985
Doc Name
GROUND WATER MONITORING PROGRAM AT CARBON JUNCTION MINE TO PREDICT POSSIBLE PIT INFLOWS SUGGESTIONS
From
MLRD
To
PUEBLO COAL INC
Permit Index Doc Type
OTHER GROUND WATER
Media Type
D
Archive
No
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~~ <br />Richertl D. Lamm <br />Governor <br />III IIIIIIIIIIIIIIII <br />999 <br />DEPARTMENT OF NATURAL RESOURCES <br />David N. Getchea Executive Director <br />MINED LAND RECLAMATION DIVISION <br />DAVID C. SNELTON, Dlrsctor <br />r / <br />May 22, 1985 <br />Mr. Jim Hendricks <br />General Superintendent <br />Pueblo Coal, Inc. <br />278 Sawyer Drive, Ste. 1-A <br />Durango, CO 81301 <br />RE: Ground Water Monitoring Program at Carbon Junction Mine <br />to Predict Possible Pit Inflows; Suggestions for Modifying <br />Dear Mr. Hendricks: <br />This letter is meant to summarize our meeting on 1 May, 1985 at the Carbon <br />Junction Mine. <br />As we both agreed, it is anticipated that mining operations will intercept <br />substantially more water than was originally thought. <br />In order to alleviate potential handling problems, and to ensure that mining <br />will not be significantly delayed due to unforeseen dewatering problems, <br />rates and amounts of mine inflow should be recalculated. Once inflow rates <br />are determined, a plan to deal with the water may be developed. <br />I suggest that since drilling and coring operations are now in progress, you <br />modify the program presented in the Kaufman and Vandell paper ("Integrating <br />a Ground Water Data Reconnaissance Program into a Mineral Exploration <br />Program") to fit your conditions. <br />The most important aspects of the program, which are easily done at your <br />site, are: (1) using the sample form (or a variation of) which I gave you, <br />have the driller note where he first encountered water; (2) measure air lift <br />production from the hole (with bucket and stop watch) as drilling continues; <br />(3) develop the hole with compressed air; (4) measure depth to water when <br />water level stabilizes; (5) note water level on any geophysical logs. <br />Careful notation of date and time when measurements are made is vital. <br />Also, ground level at each hole should be surveyed in. This data could be <br />collected at each hole in a minimal amount of time. <br />Once you have collected the data, and plotted hole locations on your base <br />map, a copy should be sent to your consultant and one to the Division. The <br />data sent should include production, depth to water, drillers' notes, <br />geophysical logs, ground level elevations, and the hole locations plotted on <br />a base map. <br />423 Centennial Building, 1313 Sherman Street Denver, Colorado 80203 Tel. (303) 866-3567 <br />
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