1986-06-04_REPORT - C1984065

• Permit No: C1984065
• IBM Index Class Name: Report
• Doc Date: 6/4/1986
• Doc Name: 1985 AHR
• From: MLRB
• To: New Castle Eenrgy Corporation
• Annual Report Year: 1985
• Permit Index Doc Type: HYDROLOGY REPORT
• Media Type: D
• Archive: No

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H� DEPARTMENT OF NATURAL RESOURCES
* * David H.Getches,Executive Director
\� J MINED LAND RECLAMATION DIVISION Y'
1876 D"1614 SHELTON, Director
Richard D.Lamm
Governor r
June 4, 1986
Mr. Mike Fisher
Chief Engineer
New Castle Energy Corporation
9137 East Mineral Creek
Englewood, Colorado 80112
Re: 1985 Annual Hydrology Report, Coal Ridge No. 1 - File No. C-84-065
Dear Mr. Fisher:
The Division has completed its review of the above referenced report. The
report is generally clear and well organized. One suggestion would be to
include the disturbed area boundary and the current extent of mining on the
hydrology monitoring map.
The Division' s review raised several questions and comments about the data
which was presented. These are as follows:
1 ) There is evidence of missing data throughout the report, some
pertaining to baseline data collection, and some to recent monitoring
records. Examples of this are: field pH missing on Well OW-4L in
August 1984, September 1984, and August 1985; all parameters missing for
Well OW-8 in August 1985; all parameters missing for Well SK-3H in
September 1982; and field pH missing for well OW 14 in January 1986.
New Castle Energy Corporation (NCEC) should provide justification for the
missing data if possible. NCEC should note that in the future, failure to
follow the approved monitoring plan may result in enforcement actions.
2) Data sheets for dry wells should be included, with the notation
"dry" under the sampling period. The wells which this would have applied to
during the previous monitoring period are 3L, 7, 12, and 13.
3) Well Number OW-9 is omitted from this report. Please explain why
monitoring of this well has been discontinued.
4) Well OW-8 shows a decrease in water quality with respect to TDS and
sulfate when comparing active to baseline monitoring periods. In addition,
Well OW-14 shows very high levels of TDS and sulfate down gradient of the
surface facilities. NCEC should explain this decreased water quality in terms
of the impact of site construction activities.
5) Well 1-SK-3H shows unusually low levels of TDS and sulfates in
June 1984 and unusually high levels of these parameters in September 1985.
NCEC should explain these variations.
423 Centennial Building, 1313 Sherman Street Denver, Colorado 80203 Tel. [phone]