GENERAL33082

• Permit No: C1980004
• IBM Index Class Name: General Documents
• Doc Date: 3/4/1982
• Doc Name: PROPOSED DECISION AND FINDINGS OF COMPLIANCE
• Permit Index Doc Type: FINDINGS
• Media Type: D
• Archive: No

• ~~ •
_Probable H_vdrnlo£ic Cons
Fules 2.05.6(3) and 2.07
1
ences and Cumulative Imvacts Assessment -
2)(c) (con't)
For the szme reasons water quality in East Salt Creek will be minimalT~~
affected, because the surface disturbance e:ili consist primarily of road
and portal development most of the impact will consist of an increase in
suspended sediment concentrations. The sedimentation ponds are designed
to reduce the sediunent concentration, to acceptable levels before release
into the streams.
?io waste cisposal areas will be developed for the ?1cClane Canyon operation.
There is a waste disposal area planned for Munger Canyon. The material to
be produced by both operations has not been completely analyzed. Prior
to the development of the waste pile the material to be disposed of will
be completely analyzed to determine whether an~• special handling or remedial
treatment will be necessary. If chemical elements are detected at
concentrations which, upon contact with surface runoff, could degrede
the quality of the water the special handling or remedial treatment measures
would prevent or minimize such an impact. Such measures will be identified
in the ?funger Canyon Findings of Compliance.
The ?funger Canyon operation will mine the same coal zone as the ?icClane Canyon
sine. For the first permit term (during which both ^~ines i:ill probably
operate contemporaneously) the ?funger operation will not advance into the
zone of saturation which was projected by the applicant on the basis of
drill hole inforr,;ation. neither mine will have a significant impact on the
nature of ground water during the first permit tern. There will be nc
cumulative effect on any aquifers of regional extent as a result of mining
at these location.
The projected development of the McClane Canyon and Munger Canyon ?line
workings indicates further impact on ground and surface water in the future.
?•funger Creek, Buniger Canyon, Stove Canyon and a portion of the East Salt
Creek valley floor i:ill be undermined. Prior to issuance of a permit to mine
into these areas it will be necessary to determine the absence or presence
of A~7F's in these canyons, and to predict the effect of mining on any a4F's
identified. These determinations will occur in furore per~it applications.
?pining will progress into the projected saturated zone of the coal interval
in future permit terms. The recharge area of the Cameo seam at East Salt
Creek will a_so be i,-•~pacted. In subsequent permits geologic anc alluvial
monitoring sites will have to be established to adeauatel_; monitor the effect
of mining on geologic and alluvial ground water euantity and quality.
ifter mining is completed for these opera*_ions all portals will be sealed
and disturbances will be backfilled, graded, topsoiled and revegetated. In
this reclaimed situation the hydrologic characteristics cf the disturbed
areas will be restored to nearly pre-r~inir.g conditions.
The assessment of the probable cumulative impacts of all anticiaated coal
mining in the general area on the hydrologic balance, as descri'oed in
2.05.6(3), has been made by the Division, and the operations proposed under
the application have beer. designed to prevent damage to the hv_droiogic
balance outside the proposed permit area.