PERMFILE55248

• Permit No: M2003016
• IBM Index Class Name: Permit File
• Doc Date: 8/6/2003
• Doc Name: Fourth Adequacy Review
• From: DMG
• To: Banks and Gesso LLC
• Media Type: D
• Archive: No

-STATE OF COLOlZADO
DIVISION OF MINERALS AND GEOLOGY
Department of Natural Resources
137 3 Sherman SC, Room 215 C O L O RA D O
Denver, Colorado 80203 D 1 V I S 1 0 N O F
Phone: [phone] ~ MIN & A L $
FAX: [phone] Ci E O L O G Y
AEGEAN ATION•MINING

August b, 2003 SAFETY•SCIENCE
Paul Gessn Bill Owens
Banks and Gesso, LLC covemor
720 T{ipling S[., Suite 117 Greg E. Walther
Lakewood, CO 80215 Executive Director
Ronald W. Cottony
Division Director
NaNral Resource Trustee
RE: SW Meadow, LLC, File No. M-2003-016
Heir Sand and Gravel 112c Permit Application- Fourth Adequacy Review
Deaz Mr. Gesso,
Listed below aze the fourth adequacy review comments for the Heit Sand and Gravel 112(c) Permit Application, File No. M-
2003-016. The Division of Minerals and Geology ("Division") is required to make a recommendation no later than August 8,
2003, therefore, your response to the following adequacy review concerns should be submitted to the Division as soon as
possible.
Per an eazlier conversation this date, please accept the previous requirements presented by the DMG that specifications for
the proposed French drain will be submitted to the DMG as a Technical Revision to the permit; further reporting on
groundwater and potential impacts will be submitted to the DMG in the form of a Technical Revision of Amendment to the
permit; and changes to the mitigation plan may require submittal to the DMG in the form of a Technical Revision of
Amendment to the permit.
Rule 6.4.5 Exhibit E- Reclamation Plan
1. The submitted reclamation plan indicates, "Mowing in phase 1 will be performed for at least 2 years following seeding to
help establish regenerating stands of grasses and to control weed infestation." Please indicate what measures will be
incorporated prior to seeding to control weed infestation at the site.
Rule 6.4.7 Exhibit G -Water Information
2. The third adequacy review requested that at least one upgradient location be included in the monitoring plan. The third
adequacy response states that the "groundwater flows in a generally northwesterly direction in the vicinity of the Heit
property. As such, we feel that New Piezometer #1, as located on Figure 3 of the second WWE report will reflect any
mounding that may occur on the upgradient side of the slurry wall." The first WWE report indicates that the alluvial
groundwater flow is to the north/northeast in the study area. Based upon this information coupled with the map included
in the fast WWE report (enclosed) depicting the predicted groundwater impacts resulting from the presence of the slurry
wall, the Division does not agree that the New Piezometer #1 will supply measurement which reflects the mounding
affect imposed by the slurry wall. Please submit a proposed monitoring location that will reflect the mounding effect, if
there is one, imposed by the slurry wall.
3. The third adequacy review letter indicated that the second WWE report indicates that groundwater level monitoring will
occur montlily for a minimum of one yeaz prior to mining to enable detemtination of baseline conditions, and requested
that the Applicant indicate the frequency of water level measurement following the first yeaz of activity at the site. The
third adequacy review response stated, "We propose that water levels will be read on atwice-monthly occurrence during
the fast yeaz of operations at the site." Again, please indicate the frequency of water level measurements after the fast
yeaz of operations at the site.
Office of Office of Colorado
Mined Land Reclamation Active and Inactive Mines Geological Suo.ey