PERMFILE102024

• Permit No: M2001001
• IBM Index Class Name: Permit File
• Doc Date: 12/12/2003
• Doc Name: Staff Reccomendation to Approve with Conditions
• From: DMG
• To: Various
• Media Type: D
• Archive: No

STATE OF COLORADO
DIVISION OF MINERALS AND GEOLOGY
Department of Natural Resources
1313 Sherman 6t., Room 215
Denver, Colorado 80203
Phone: [phone]
FA%: [phone]
Date: December 12, 2003
To: Wally Erickson
DIVISION OF
MINERALS
GEOLOGY
RECLAMATION
MINING•SAFETY
Bill Owens
Governor
Greg E. Walther
Exewrive Director
From: Harr Pose Ronald W. Cottony
y y Acting Division Director
Subject: Water Quality Review, Four States Aggregates, LLC, Line Camp Pit, M-2001-001
This assessment refers to the data report from Souder Miller and Associates (SMA) to Nathan Barton
dated November 26, 2003. This correspondence and the lab results list iina ba Ltd. as the analytical lab.
This assessment also reviews the report on water and soil sampling prepared by Nathan A. Barton, which
was received in the Durango Field Office December 9, 2003.
At issue is whether the Line Camp pit operations may change water quality such that discharge of pit
water to surface streams would adversely affect the hydrologic balance. For most streamside pits such as
Line Camp, the CDPHE-WQCC requires that discharge waters be analyzed for very few parameters,
those usually being TSS, temperature and discharge rate. In some cases, pH and conductivity are
required, and in special cases WQCC requires other specific metal parameters.
It is recognized that the Board, through DMG, has responsibility for seeing that operators minimize
impacts to the hydrologic balance. At a minimum, this means that DMG must assure that operations
regulate the source of contaminants. It is further recognized that CDPHE-WQCC is responsible for
regulating the discharge of contaminants. Given these parallel but separate responsibilities, there is
significant precedent for DMG to have mining operations measure water quality at mines and compare
that water quality to stream standards for local receiving streams in order to determine whether source
controls are being implemented. This procedure does not in any way presume that DMG or the Board
have taken on responsibility for enforcing regulations of the WQCC.
The data report lists analyses for three samples:
River water
Pond water
Pond sediment
The two water samples were analyzed for some major elements plus TDS and TSS by the dissolved
method, plus oil and grease and diesel and oil range organics. The sediment sample was analyzed for
TCLP metals by ICP.
Mr. Barton's report addresses the SMA data.