PERMFILE53922

• Permit No: M1996052
• IBM Index Class Name: Permit File
• Doc Date: 11/5/1996
• Doc Name: ADEQUACY REVIEW DEL CAMINO SAND AND GRAVEL MINE FILE M-96-052
• From: DMG
• To: AGRA EARTH & ENVIRONMENT INC
• Media Type: D
• Archive: No

Mr. Paul Banks
November 5, 1996
Paqe 2

materials in sufficient detail so that reclamation costs of
the structures can be calculated. The costs must be included
in the Exhibit L Reclamation Costs.
4. Provisions outlined in Rule 3.1.9(3) of the Mineral Rules and
Regulations require topsoil stockpiles to be stored in places
and configurations which minimize erosion. Map C-2 shows two
potential stockpile locations within the 100 year floodplain.
Please clarify whether topsoil stockpiles will be stockpiled
in these two areas. If so, they may be subject to potential
erosion from flooding. To minimize the potential for erosion,
the operator will need to commit to forming elongate
stockpiles aligned with the river.
5. It will be necessary to submit proof of compliance with the
State Engineer before disturbing the groundwater. This can be
in the form of verification of the well permit and application
for the well permit/augmentation plan. Please notify this
Division if the permit has been issued.
6. Pursuant to C.R.S. 34-32-116(7)(8), the Division is concerned
that disturbance to the hydrologic balance and to the quality
and quantity of groundwater be minimized during and after the
mining operation. Exhibit G states that some drawdown of
groundwater reserves as a result of dewatering is anticipated.
According to the well data listed in Appendix B of the
application, there are two shallow wells north of the permit
boundary. Permit No. 35646, permitted to Gilbert Acord, is
shown on Exhibit G-1, Ground Water Well Location Map.
Appendix B includes Permit No. 38262 (to Fred Craig) located
in SW,NW Section 32, T3N, R67W. Please explain why this was
not included on Map G-1 and make the appropriate change if
necessary, to the map. If there is indeed a well at that
location, could it be at the Timko residence as shown on the
Index map? A well in this area may be within 200 or 300 feet
of Phase 1. There are also a number of wells southwest of the
permit area, the closest being approximately within 600 feet
of Phase 3.
The application states that a piezometer has been installed
between the Acord well and spring and the mine area. Please
show this location on Map G-i and provide the completion data.
The applicant will need to submit a monitoring plan to include
at least three monitoring points including the Acord site. A
second monitoring point is needed for the Craig well mentioned
above and the third in the inferred upgradient position at the
nearest well south of the mine area. The plan needs to
include a schedule for monitoring groundwater levels at least
on a quarterly basis to begin at least five quarters prior to