GENERAL55781

• Permit No: C1981016
• IBM Index Class Name: General Documents
• Doc Date: 3/14/1983
• Doc Name: PROPOSED DECISION AND FINDINGS OF COMPLIANCE
• Permit Index Doc Type: FINDINGS
• Media Type: D
• Archive: No

-47-
Climatological Information and Air Resources -Rules 2.
~ nc nro,,ti ~r1 ,tea n ,~
The required climatological information is presented on pages 2.04-34
through 2.04-36 of Volume 1.6 of the application. A description of the
air pollution control plan is included on pages 2.05-56 through 2.05-57,
and in Appendix XV. Emission permit applications and copies of permits
are contained in Appendix X-12.
The applicant proposes to periodically water roads to suppress dust.
Crushing and conveying operations are equipped with a water spraying
system, and all conveyors will be partially enclosed.
The proposed operation is in compliance with the requirements of this
section.
XI. Topsoil - Rules 2.04.9, 2.05.3(5), 2.05.4(2)(d) and 4.06
Soils resource information is presented on pages 2.04-34 through 2.04-406
and in Appendix XVI of the application. Information on topsoil salvage
and storage is presented on page 2.05-4U. Topsoil redistribution is
discussed on page 4.06-1.
The surface disturbance at the Hawk's Nest Mine has been limited to
approximately 29 acres. The major soil type disturbed is mapped as
Torriorthents - Haplaryids complex, very stony. The soil occurs on the
moderate to steep (up to 5(YXj south facing slopes rising to the north of
the North Fork of the Gunnison. The soil is generally shallow and rocky
and supports a shrub dominated community.
The majority of the land surface within areas identified as disturbed
lands within the permit boundaries has been previously disturbed by
mining activity. The only topsoil previously salvaged at Hawk's Nest is
approximately 50 cubic yards of clayey soils stockpiled near the load-out
silos. The only additional disturbance proposed for the first five year
permit term is a recently constructed haul road from the West mine
loading bin near the railroad tracks to the truck dump at the load-out
silos. The road has disturbed less than 1 acre of previously undisturbed
surface. Topsoil was salvaged prior to construction.
Due to the fact that no topsoil was salvaged prior to initiation of
disturbance, (with the exception of the small stockpile at the load-out)
W.S.C. has proposed to import sediment from the borrow pit area of Paonia
Reservoir for use in final reclamation. Analyses within the application
indicate that the sediment ranges from sandy loam to sandy clay loam in
texture, with acceptable electrical conductivity, sodium adsorption ratio
and toxicity levels. Fertility levels in the sediment are apparently
quite low. The material would be suitable for non toxic refuse cover or
for use as a plant growth medium with supplemental fertilization, and
incorporation of organic matter. However, since the availability and
nature of the sediment from Paonia Reservoir is subject to change, it is
probable that during review for subsequent permit terms and prior to
final reclamation, reevaluation of the topsoiling plan and reanalysis of
the topsoil material to be used will be required.