REP05427

• Permit No: C1981028
• IBM Index Class Name: Report
• Doc Date: 4/10/2003
• Doc Name: 2002 AHR Review Memo
• From: Byron Walker
• To: File
• Annual Report Year: 2002
• Permit Index Doc Type: Hydrology Report
• Media Type: D
• Archive: No

STATE OF COLORADO
DIVISION OF MINERALS AND GEOLOGY
Department of Natural Resources
1313 Sherman SL, Room 275
Denver. Colorado 80203 DIVISION O F
Phone: [phone] IVt 1 ~ E RA L $
FAX: [phone] Sc
GEOLOGY
RECLAMATION
MINING•SAFETY
Interoffice MEMORANDUM
Rill Owens
Governor
to: File C-81-028, Keenes urg Mine, 2002 Annual Hydrologic Report Greg E. Walther
from• Byron G. Walker Fxec°°ve Dhector
subject: Compliance Review, 2002 Annual Hydrologic Report (AHR), C-81-028 Divisio
y
n Diretlor
date: April 10, 2003
Rule 4.05.13(4)(c): A hydrologic report shall be submitted to the Division annually with the date
of submittal determined in consultation with the permtttee. The annual hydrologic report shall
contain at a minimum:
The report is in compliance with this rule. The report is required to be submitted by the Coors Energy
Company (CEC) by the end of February (Permit, page 117). The report was received in the Division
of Minerals and Geology (Division) on February 28, 2003.
Rule 4.05.14(4)(c)(i): Water quantity data obtained from each monitoring site during the water
year;
The report is in compliance with this rule with the approved variance that water quantity data was
submitted by calendar yeaz in-lieu-of water year (Permit, page 117). There are no surface water
monitoring sites. Well water levels were taken.
Rule 4.05.14(4)(c)(ii): Water quality data obtained from each monitoring site during the water year;
and
The report is in compliance with this rule with the approved variance that water quality data was
submitted by calendaz year in-lieu-of water year (Permit, page 117). The monitoring program is
described on pages 56 and 57 of the Permit. Six wells aze monitored. Required information is in the
report on pages 48 through 89. The report includes barium as a pazameter of testing (not required by
Division of Minerals and Geology, but by the Colorado Department of Public Health and
Environment for monitoring this parameter as consequence of disposing hard rock mine waste at the
site). There is no surface water monitoring at the site.
Rule 4.05.14(4)(c)(iii): If required by the Division, a written interpretation of the data and
identiftcation of mining related impacts to the hydrologic balance.
The report is in compliance with this rule. The Division required no written interpretation ofthe data,
but graphs of field static water levels, pH, and specific conductance for the past 5 years (pages 66