2000-06-02_PERMIT FILE - M2000002 ‎(7)‎

• Permit No: M2000002
• IBM Index Class Name: Permit File
• Doc Date: 6/2/2000
• Doc Name: RESPONSE TO ADDITIONAL ADEQUACY REVIEW COMMENTS 112 CONSTRUCTION MATERIALS APPLICATION MOBILE PREMIX
• From: TUTTLE APPLEGATE INC
• To: DMG
• Media Type: D
• Archive: No

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Consultants for Land. Mineral and Water
June 2, 2000
Division of Minerals and Geology
Department ofNatural Resources
Attn: Mr. Tom Schreiner
1313 Sherman Street, Room 215
Denver, Colorado 80203
RECEIVEC
JUN 02 2000
DivisionotMinerals & tiecrog~
RE: Response to Additional Adequacy Review Comments, 112 Construction Materials
Application, Mobile Premix Concrete, Inc. a subsidiary of Lafarge Corp., Tanabe
Pit, Application No. M-2000-002
Dear Mr. Schreiner:
The following discussion and attachments are submitted on behalf of our client in response to the
additional adequacy review comments received for the Tanabe Pi[ permit application. Mr. Tom
Schreiner submitted additional comments to the applicant in letters dated May 31 and June 1,
2000. The information and discussion below addresses each comment as it was presented by the
Division.
Response to Comments Received from Mr. Tom Schreiner, May 31, 2000.
5. On page 5 the applicant specifies that an overhead conveyor will be used to transport
aggregate materials from the Tanabe Pit across Bighton Road over to the processing plant at the
Howe Pit. Please indicate if the support structures will be removed during final reclamation and
if so, provide a demolition cost for removal.
The overhead conveyor system and support structures will ultimately be removed. The
cost for removal of the support structure on the proposed Tanabe site is included in Line
K of the revised Reclamation Cost Estimate provided in Attachment A2.
6. Please verify the expected depth to ground water in the wetland area, the depth of backfilling
required to produce the desired hydrologic soil conditions for wetlands, and the volume of
backfill material required (including process fines and overburden materials).
• The Addendum to the Phase I Environmental Site Assessment, ERO Resources, states
that the depth to ground water beneath the proposed Tanabe site is from 20 to 24 feet (see
Attachment I of the May 24, 2000 applicant response letter). These values were taken
from well records maintained by the State Engineer's Office. As shown on the Pre-
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