REV02297

• Permit No: C1981041
• IBM Index Class Name: Revision
• Doc Date: 7/26/1999
• Doc Name: INTEROFFICE MEMO ROADSIDE MINE PN C-81-041 TR 28
• From: MIKE BOULAY
• To: DAN MATHEWS
• Type & Sequence: TR28
• Media Type: D
• Archive: No

III IIIIIIIIIIIIIIII
999
STATE OF COLORADO
DIVISION OF MINERALS AND GEOLOGY
Depanmenl of Natural Resources
1313 Sherman SL, Room 215
DIVISION O F
Denve4 Col Orado A0203
Phone: [phone] MINERAL S
FAY: [phone] &
GEOLOGY
RECLAMATION
MINING•SAFE TY

Bill Owens I
Governor ~
Greg E Watcher
Executive DnecWr
INTEROFFICE MEMORAND UM Michael B. Long
Division DireUOr
TO: Dan Mathews
FROM: Mike Boulay ~~~
DATE: July 26, 1999
SUBJECT: Roadside Mine (Permit No. C-81-041)
Technical Revision No. 28
As requested, I have reviewed Roadside Mine's proposed revision to their Hydrologic Monitoring
Plan submitted as TR-28. Roadside proposes the following:
• Discontinue monitoring at surface water sites SWGS 02, SWGS 03, and SWGS O5;
• Discontinue monitoring the upper surface water stations in Coal and Jerry Creeks; and
• Move the lower monitoring point in Coal Creek to existing culverts.
On revised page 18-3, the operator indicates that measurements in both Cottonwood and Rapid
Creek have proven to be of questionable value and that the flow being monitored is only associated
with release of water from upstream reservoirs. The operator also states that there is no surface
disturbance in the area. Although this may be the case, underground workings may have an effect
on surface water quantity due to subsidence. For this reason, flow measurements should be
continued at both of these creeks.
SWGS 02 and SWGS OS provide upstream flow information for Cottonwood Creek and SWGS 03
provides upstream flow information for Rapid Creek. Surface water quality monitoring is not
currently conducted at any of these sites. These surface water monitoring points provide the only
source of information for drainage into the permit area and are critical for identifying any potential
impacts to surface water quantity. Rule 2.05.6(3)(b) requires a plan for control of surface water
drainage into, through and out of the permit area and adjacent area.