2003-03-31_REVISION - M1977344 ‎(2)‎

• Permit No: M1977344
• IBM Index Class Name: Revision
• Doc Date: 3/31/2003
• Doc Name: Response to Adequacy Review
• From: Holcim
• To: DMG
• Type & Sequence: AM1
• Media Type: D
• Archive: No

Division of Minerals and Geology
March 31, 2003
Page 4 of 17
that according to Rule 1 Section 1.3 (3) an operator may only mark as confidential information
disclosing the location, size or nature of the deposit or depth and thickness ofthe deposit and
thickness and type of overburden to be removed. All other information required by the
regulations can not be kept confzdential.
Response:
Since the amendment application was originally submitted the Mine Plan has been revised and
updated as of 1/1/03. Attached is "Table D-1: Mine Planning Details", marked as "Confidential
Information", that shows the general mining plan based on the cuts for the life of the quarry. The
table shows the cuts and approximate years that each cut will be initiated. There will be some
overlap in activities in certain cuts throughout the years to allow for stripping of overburden and
also to minimize the impact to neighbors (i.e. -approximately 750 feet of the eastern portion of
cuts 5, 7, and 4 will be left until year 2016 when the quarry face will be parallel to and will
advance towards L street on those specific cuts. The same will occur with cuts 11 and 14 in the
later years.
It is planned that the backfilling of Cut 1 will start in 2004 after the limestone has been removed.
Backfilling, starting from the south, will take place on a continuous basis, starting in 2004 and
proceeding throughout the life of the quarry. Reclamation will commence once sufficient
backfilling has occurred and a substantial area has been completed to grade. The area will then
graded to contour, covered with topsoil and seeded according to the approved seed mixture.
Item No. 7
DMG.~ During the pre-operation inspection conducted on October 10, 2002, the need for
sediment control in the Bear Creek mining area was discussed. The division suggested that a
sediment retention dam (pond) could be constructed on or near the lower reach of the creek
within the permit area to prevent silt from being deposited on land outside the affected land
boundary or from degrading water quality downstream ofyaur operation. Please provide a
sediment control plan including designs for any structure/s, for the Bear Creek drainage/mining
area.
Response
Holcim will insure that any water that flows over the disturbed area is contained within the
disturbed area and channeled to an area where the water can be managed during quarry
operations. In the area near Bear Creek, Holcim will install Best Management Practices (BMP's
- e.g. silt fencing, hay bales, and small attenuation basins off of main channels) to insure that any
water that has the potential to flow into the Beaz Creek Drainage wilt be attenuated prior to
reaching Bear Creek.
Item No. 8
DMG: In accordance with Rule 6 Section 4.4 (e), you have provided a timetable for the mining
operation. However, this section also requires that the timetable establish the relationship
between mining and reclamation. Please provide a detailed description, including timeframes, of
how reclamation will follow mining. In particular the Division wants Holcim to commit to
completing final reclamation, topsoiling and revegetation, in a timely manner. How soon will
final reclamation occur after a mine cut has been backfilled?
Holcim Response to Amendment Adequacy Reriew.doc