REP27287

• Permit No: C1981041
• IBM Index Class Name: Report
• Doc Date: 3/26/1999
• Doc Name: ROADSIDE MINES ANNUAL HYDROLOGY REPORTS FOR 1997 PN C-81-041
• From: DMG
• To: LARRY ROUTTEN
• Permit Index Doc Type: HYDROLOGY REPORT
• Media Type: D
• Archive: No

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DIVISION OF MINERALS At~D C€OLOGY
Department of NaWral Resour[e5
1313 Sherman 51 ,Room 215
Denver, Colorado 80201
Phone: [phone]
FAX: [phone]
DATE: March 26, 1999
TO: Larry Routten
FROM: Dan Mathews
RE: Roadside Mine, 1997 Annual Hydrology Report
Permit C-81-041
DIVISION'OF
MINERALS
GEOLOGY
RECLAMATION
MINING•SA FETY
Bill Owens
Governor
Greg E Walther
Ececulive Director
Michael B. long
Oiyision Director
Enclosed for PHC conformance review by a staff hydrologist is the 1997 AHR for Roadside
Mine, which covers the water year from October, 1996, through September, 1997. Due to
various factors, including the staff changes at Powderhorn, the report was not submitted until
January, 1999, approximately ] 0 months late (for the second straight year). I have also enclosed
a summary of AHR report requirements to assist the reviewing hydrologist. I have advised the
operator that such delays are not acceptable, and that enforcement action will likely be taken if the
1998 AHR is not submitted by the March 31 deadline.
I noted the following problems or discrepancies in my preliminary review.
The usefulness of the mine inflow map would appear to be enhanced if mining timeframes
were accurately depicted. The map submitted distinguishes only between "pre-1978
mining" and mining conducted "1986 or previously". All areas mined since 1978 are
erroneously depicted as having been mined in 1986 or earlier.
2. One of the two upstream alluvial wells on Rapid Creek (GWMS-03a) was reported as
"destroyed by vandals" in September, 1997. I don't recall being notified of this, and the
monitoring plan specified in the PR-02 Findings, issued in December, 1997, specifies that
this well would be monitored May and September for water level, to monitor surface
subsidence impacts on creek flows in the southern permit area (along with other wells on
Rapid Creek and Cottonwood Creek). Operator will need to address the status of this
well and the need for repair or replacement.
Field parameters (temp., conductivity, and pH) were not included in the annual monitoring
data for LJTL piezometers, as specified in the permit, and the data will need to be
provided.
4. Required quarterly depth to water was reported for all refuse piezometers, with the
exception of missing second quarter data for Pz-307, for which problems in monitoring