_INSPECTION - C1991078 ‎(9)‎

• Permit No: C1991078
• IBM Index Class Name: INSPECTION
• Doc Name: Inspection Report
• Inspection Date: 9/21/2009
• Email Name: MLT
• Media Type: D
• Archive: No

III. COMMENTS -COMPLIANCE
Below are comments on the inspection. The comments include discussion of observations made
during the inspection. Comments also describe any enforcement actions taken during the inspection
and the facts or evidence supporting the enforcement action.
This was a Partial Inspection of the Hamilton Mine conducted by Marcia Talvitie of the Colorado
DRMS on Monday, 21 September 2009. Weather conditions were sunny and cool, with a strong
breeze. The inspection commenced at 11:50 a.m.
Permitting Topics
• MR-10, which modifies the Annual Reclamation Report requirements to include weed control
activities,was approved on 25-Aug-2009.
• TR-09 seeks to have Pond B retained as a permanent impoundment. The Division's
Preliminary Adequacy Review letter was issued on 13-Aug-2009. The Decision date has been
extended to 30-Apr-2010 to provide sufficient time to analyze water quality.
• TR-10 will incorporate a Soil Loss Demonstration into the permit. The Division issued its
Preliminary Adequacy Review on 18-Sep-2009.
Hydrologic Balance
• Ponds A and B were both dry.
• The emergency spillway for Pond B was clear, and it did not appear that any maintenance is
required.
Revegetation
• The eastern end of the Pond B dam was nearly devoid of vegetative cover, with the
exception of some annual weeds. Noxious weeds observed earlier in the year appear to
have been effectively controlled.
• The bottom of Pond B is covered with tamarisk,sunflowers, and foxtail barley.
• A stand of wavy-leafed thistles was observed on the west bank,just north of the ditch inlet in
the southwest corner. A colony of Russian knapweed at the northern end of the western
bank did not appear to have been sprayed this season.
Topsoil
• The topsoil stockpile located immediately south of Pond B was covered with vegetation,
including Winterfat, rubber rabbit brush, sage brush, snakeweed, needle-and-thread grass,
and Indian rice grass. A small amount of cheat grass was observed, but overall the
vegetative cover is excellent, and the topsoil resource is being protected. Thistle rosettes
observed in June had been sprayed.
The inspection was concluded at 12:40 p.m.
Hamilton Mine C-1991-078 21-Sep-2009