REP24579

• Permit No: C1981025
• IBM Index Class Name: Report
• Doc Date: 1/14/2004
• Doc Name: 2003 AHR Review Compliance Memo
• From: Byron Walker
• To: File
• Annual Report Year: 2003
• 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 St., Room 215 C O L D RA D O
Denver, Colorado 80203 DIVISION O r
Phone: [phone] M I N E~ RA L S
FAX: [phone] G E O L O G Y
Interoffice MEMORANDUM 0.ECLAMATION•MINING
SAFETY•SCIENCE
Bilt Owens
to: File C-81-025, North Thgmpson Creek Mines, 2003 Annual Hydrology Repos6~ernor
from: Byron G. Walker ~~ Greg E. Walther
cc: Dan Hernandez (e-mail) Executive Director
subject: Review for Compliance, 200 3 Annual Hydrology Report (AHR) Ronald W. Canany

date: January 14, 2004 Division Director
Natural Resource Trustee
Rule 4.05.13(4)(b): Ground water and surface water data collection shall be based upon a water
year (October 1 through September 30), unless otherwise approved by the Division.
The report is in compliance with this rule. The Division has approved submittal on a calendar
year basis [Permit Application Package (PAP) page 4-122].
Rule 4.05.13(4)(c): A hydrologic report shall be submitted to the Division annually with the date
ofsubmittal determined in consultation with the permittee. The annual hydrologic report shall
contain at a minimum:
The report is in compliance with this rule. The date of submittal of March 30 is stated in the PAP
(page 4-122). The report was submitted under a MINREC, INC. letter of January 7, 2004 and
received in the Division of Minerals and Geology (Division) on January 9, 2004.
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. Water quantity data was submitted by calendar year in-
lieu-oftyater yeaz.
Groundwater quantity data of the monitoring program is limited to quarterly measurements of water
level in Wells D-lA and D-2A (PAP page 3-61). These data are reported in compliance with the
permit.
Discharges of mine water are included in surface water monitoring. Surface water quantity
monitoring requirements include those of the Colorado Permit Discharge System (CDPS) permit
(PAP page 3-86). The combined total of flows from Mine 1 and Mine 3 are reported, starting in
August of 1995, in compliance with a change to the CDPS permit. Stated on page 6 of the report is
that there were no discharges from sedimentation ponds [at CDPS outfalls 002 (Sediment Pond P-9)
and 005 (Refuse Pile Sediment Pond)]. Copies of Discharge Monitoring Reports are included in the
Office of Office of Colorado
Mined Land Reclamation Arrive and Inactive Mines Geological Survey