REV17913

• Permit No: M1980244
• IBM Index Class Name: Revision
• Doc Date: 9/30/1998
• Doc Name: REVIEW OF GROUND WATER HYDROLOGY OF CC&V AMENDMENT 7
• From: DMG
• To: BERHAN KEFFELEW
• Type & Sequence: AM7
• Media Type: D
• Archive: No

• • III IIIIIIIIIIIIIIII
STATE OF COLORP~UU
DIVISION OF MINERALS AND GEOLOGY
Depanmenl of Natural Resources
1 J 13 Sherman St.. Roorp 215 ~ ~ ~ `y`
Denyer, Colorado A0203 I
r
Phone: [phone]J567 III
FAX: [phone]-A106
DEPARTtv1EIxIT OF
NATURAL•
RESOURCES
Roy Romer
Governor
DATE: September 30, 1998 lames S lachhead
Executive Director
TO: Berhan Keffelew Michael B. Long
Division Director
FROM: Jim Stevens :(lI
RE: Review of ground water hydrology of CC&V Amendment 7
As a result of my review, I have identified the following adequacy concerns:
MAP: Rule 6.4.7 (2) requires a map with well locations and those of other water bearing
structures that may be affected by the proposed mining operation. Rule 6.4.20 (8) (a)
requires a map with similaz information but extends the area covered to two (2) miles of
the existing or proposed affected lands for Designated Mining Operations. Rule 3.1.7 (7)
requires a map that accurately locates all proposed ground water sample points and any
locations proposed as a point of compliance. There is no map provided with Amendment
7 [ha[ meets the requirements of these applicable rules together with the basic
requirements of Rule 6.2.1 (2). The monitoring well map comes closest but does not have
a scale or land survey grid (for accurate well locations) nor does it have [he outline of the
area corresponding to the application. It does not show the locations of the various wells
in the Bateman Creek drainage, many of which yield water of useful quality and are near
enough [o [he ADR at the head of the drainage to be adversely affected. It does no[ show
any of the monitoring wells in the northern part of the DMO, eg. in Sections 17 and 18,
which are registered with the SEQ and may yield water of useful quality. It does not even
show all wells proposed in the application narrative to be monitored, ie. WCMW-2 and
WCMW-9. It also does not show the locations of the various tunnels/adits that underlie
the mine which carry and, in some cases, discharge water admitted by the operator to . •• ~~•
possibly be adversely impacted by the operation..
A[ least one map meeting the requirements of these various applicable rules should be
provided.
2. HYDROGEOLOGY: Rule 6.4.20 (8) (e) requires the hydrogeology of the area where
the ground water may be impacted by the DMO to be described and illustrated. The
hydrogeology for the area of the DMO drained by the Carlton Tunnel has been described