REP26901

• Permit No: C1980005
• IBM Index Class Name: Report
• Doc Date: 4/8/1986
• Doc Name: SENECA II 1985 ANNUAL HYDROLOGIC REPORT FILE C-80-005
• From: MLRD
• To: STEVE RENNER
• Permit Index Doc Type: HYDROLOGY REPORT
• Media Type: D
• Archive: No

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Richartl D. Lamm
Governor
DATE
TO
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999
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DEPARTMENT OF NATURAL RESOURCES
David H. Getches, Executive Director
MINED LAND RECLAMATION DI\
DAVID C. SHELTON, Director
April 8, 1986
Steve Renner
FROM: John T. Doerfer ~/II/
RE: SENECA II 1985 ANNUAL HYDROLOGIC REPORT -FILE N0. C-80-005
I have reviewed the Annual Hydrologic Report (AHR) for 1985 submitted by
Peabody Coal Company (PCC) for the Seneca II Mine. The sections I reviewed
pertain to surface water hydrology as do the comments provided below. I have
grouped my comments into two sections: 1. Hydrology and, 2. Water Quality.
In general, the report is well organized and written. The 1985 report
continues with the format of earlier reports and is of the same high quality.
Statistical summaries of water quality data using the SAS programs and
formatted outputs were very instructive and facilitated review. All of the
water quality data for surface water sites under the reduced monitoring
program defined in April 1984 are presented in the report. An appendix is
included which provides copies of all the NPDES reports for permitted pond
discharges. In addition, all discharge data is plotted as annual
hydrographs. The narrative interpretations and presentations of data in
graphical and statistical form are commendable. The specific questions and
comments I had following review are listed below.
Surface Water Hydrology
1. The map which identifies surface water stations (Exhibit 7-2) was
difficult to read on first inspection. All of the many ground water stations
and potentiometric surface lines are presented on this plate as well. Because
this is a black line enlargement of a section of a USGS quad, the streams were
difficult to locate and names of some were missing. Station SW-S2-6 lies
outside of the map topographic boundaries. Station SW-S2-1 did not appear to
be located on Grassy Creek as identified. The outflow channel from NPDES Pond
002 to Little Grassy Creek was not shown, These details could be shown more
clearly on Exhibit 7-2. Also, I would suggest that a small map showing only
the surface water system and permit boundary be added at the introduction of
Section V to improve the report.
2. In comparing above and below station data, and intervening pond
discharges, same day monitoring is recommended. This was possible for some of
the data collected in 1985. With a reduction to only three samplings per year
for full-list analyses, it would be beneficial to adjust monitoring to same
day scheduling for:
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