INSPEC22423

• Permit No: M1977436
• IBM Index Class Name: Inspection
• Doc Name: MINERALS PROGRAM INSPECTION REPORT
• Inspection Date: 8/28/1998
• Media Type: D
• Archive: No

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MINE ID # OR PROSPECTING ID # M-77-436
INSPECTION DATE_AUgust 28, 1998 INSPECTOR'S INITIALS TAS
Permit has been issued for process water and stormwater discharge at this site should be sent
to the Division. Until such time that evidence of an NPDES Water Discharge Permit can be
provided, the operator is advised to maintain all process water on site in a holding pond or
other suitable structure. The Colorado Department of Health, Water Quality Control Division
will be sent a copy of this report and will be kept informed of any information received from
the operator on this matter.
6. Mr. Hammer noted during the previous field inspection that D.H. Holding, Inc. is in the
process of filing an application for a revision to the permit to allow for installation of
a slurry wall to minimize or prevent the seepage of groundwater into the pit. Since then,
engineering studies needed for design of the proposed slurry wall have been 508 completed.
Mr. Hammer noted that the City of Thornton is condidering the Tower Pit #1 as a potential
water storage facility and may take over the site through the right of condemnation process.
Accordingly, the necessary engineering studies have not been completed. A recent discussion
with representatives of the Office of the State Engineer indicates that there is no
application on file for either a Temporary Substitute Supply Plan or Water Augmentation Plan.
According to the Office of the State Engineer, an approved TSSP or Water Augmentation Plan
will be needed prior to filling the pit with water.
7. There was approximately 3 acres of "sorted" stored concrete waste in the Parcel E area.
Therefore, the concrete waste is considered to be a saleable product. The Division will
still require a reclamation bond adequate to cover the cost of ripping, topsoiling, and
revegetating the storage area in conformance with the reclamation plan.
8. Structural demolition includes removal of the ramps and foundation of the truck scales
(estimated at $1,750) and removal of 35 flatbed trailer loads of non-roadable mining
equipment (estimated at $230/load}, The non-roadable mining equipment includes 4 large fuel
tanks, 17 loads of "low value" equipment, and 14 loads of "high value" equipment. Removal
of the non-roadable equipment will be necessary during final reclamation as it does not
comply with the reclamation plan and post-mining land uses of residential and recreation.
Therefore, a demolition cost of $9,800 will be included in the total reclamation cost.
Options available to the operator for reducing the demolition cost of $9,800 are as follows:
Option A Remove all or portions of the equipment within 60 days.
Option B Submit a permit modification to the reclamation plan to allow for
commercial/industrial use (equipment storage) on a portion of the
permit area. In order for the permit modification to be considered
the operator will need to demonstrate approval of the commercial/
industrial land use by the Adams County Zoning Department.
Option C The operator may demonstrate salvage credit for portions or all of
the non-roadable mining equipment. If this option is chosen, the
operator should be prepared to complete the process for determination
of salvage credit as outlined in Rule 4.12.2 (please see attached copy).