INSPEC28250

• Permit No: M2004078
• IBM Index Class Name: Inspection
• Doc Date: 4/5/2006
• Doc Name: Inspection Report
• From: DMG
• To: SW TKO Joint Venture LLC by Lafarge N.A.
• Inspection Date: 3/21/2006
• Media Type: D
• Archive: No

(Page 4)
MINE ID # OR PROSPECTING ID #: _ M-Anna-mR
INSPECTION DATE: n3/~i/nr;
INSPECTOR=S INITIALS: TpS
The following problems (PB) and/or possible violations (PV) (and suggested corrective actions) were identified during this
inspection. The problems should be corrected by the dates given, or they will become possible violations. The possible
violations should be corrected by the dates given to reduce their severity when considered by the Mined Land Reclamation
Board. The inspector noted on the previous page should be notified of all corrective actions taken.
PROBLEMS/POSSIBLE VIOLATIONS
AND
CORRECTION
of the mine plan specifies a de-watering rate of 45
~ered groundwater will be flow by gravity back to tl
seepage ditches (west of Colorado Highway 85).
r indicate that the maximum conveyance capacity c
iitch & 6 cts-Olgilvie ditch). Stipulation 2 of the J
discharge of mme water into existing ditches, the
of Minerals and Geology for a ditch stabilization a
jl revision to the permit. The operator has not yet
ie recovered groundwater from de-watering open
and Ooilvie see~aae ditches in a manner that min
second and that discharge
e River via the Porter and
currents provided byy the
~e ditches is 21 cfs (15 cts-
~oard Order specifies that
obtain approval from the
itrol plan, m the form of a
an to venfy that they can
iouth Platte River via the
tential for damage to the
Prior / to
discharge of
mine water into
the Porter and/or
Ogilvie seepage
ditches.
PB or PV: PB
Corrective action: Prior to any offsite discharge of mine water or discharge of mine water into the
Porter or Ogilvie seepage ditches, the operator must receive approval of a ditch stabilization and
erosion control plan for each route of water conveyance beginning at the east edge of Colorado
Highway 85 right of way and continuing to the point of discharge of mine water from the Lupton
Lakes Project must include a) evaluation of the current flow capacity of each water conveyance
structure, b) designs & plans for stabilization as necessary, c) designs & plans for outlet control
measures at the point of discharge into the South Platte River, and d) method for determination of
how the volume of mine discharge water will be monitored and regulated so as not to exceed the Flow
capacity of the water conveyance structure.
TOPIC(S): ~B_
2. Approximately 1300 linear feet of water conveyance trench approximately 4' wide x 3' deep was OS/ 04 /06
excavated along the west permit boundary immediate)y north of W 8. The trench was
unspecified in the mine plan and less than 4 from a fence line that also serves as the west permit
boundary. The Mine Plan trap specifies a minimum setback of 25' from the property line in this
vicinity, and the Mine Plan specifies that an above ground pipeline be used for conveyance of mine
process water.
PB or PV: ~g
TOPIC(S): ~`1~
Corrective Actions: The operator must backfill the trench excavation and stabilize by re-vegetating
with the approved reclamation seed mix or a temporary cover crop approved by the Division. The
operator must provide photographs or other evidence verifying completion of these tasks. The
operator must also provide a written clarification to the Division of whether a water conveyance
pipeline was placed in the trench prior to backfilling. If the pipeline was placed prior to backfilling,
then the operator will need to submit a permit modification on or before May 4, 2006 to account for