2010-02-09_PERMIT FILE - C1982056A ‎(6)‎

• Permit No: C1982056A
• IBM Index Class Name: Permit File
• Doc Date: 2/9/2010
• Section_Exhibit Name: 2.04 Environmental Resources
• Media Type: D
• Archive: Yes

exchange sites. The new result in this increase in calcium to a minimal concentration of 7 meq/I will produce a new
decrease in the average SAR from a value of 16.9 to an average SAR value of azound 6.6. Calcium in excess of 7
meq/1 will result in even lower SAR values. Evidence to support this logic is amply contained in the SAR values
presented from overburden data collected in this same area and previously discussed in the CYCC Permit Application
No. 79-177.
Arsenic -The average arsenic value for the 20 samples analyzed was less than 0.11 ppm with a range of less than 0.01
to 0.49 ppm. Neither the Wyoming nor Montana Guidelines present a suspect level for arsenic; however, the values
contained herein are sufficiently low to preclude the possibility of any adverse impacts.
Cadmium -The range of cadmium content of these samples was found to be less than 0.02 ppm to a maximum of
0.04 ppm. According to the Guidelines of the Montana Department of State Lands, cadmium values of between 0.1 to
1.0 ppm are considered suspect. Of our 20 samples, none exceeded this minimum and due to the extremely low
values detected, the adverse impacts of any cadmium contamination to the revegetation or hydrologic processes is
remote.
Copper -The average copper concentration found was 2.2 ppm with a range of 1. ] to 4.6 ppm. The guidelines of the
Montana Department of State [ands reports that copper at concentrations in excess of 40 ppm is considered suspect.
Due to the extremely low copper values contained in these samples it appears that the likelihood of copper being a
problem with reclamation is highly remote.
Iron -The average iron concentration of the samples analyzed was found to be 82.9 ppm with a range of 43 to 132
ppm. The suspect level of iron, according to the Montana Deparlment of State Lands, is unknown: however, due to
the fact that iron values repoRed in CYCC's Permit Application No. 79-177 averaged 59.3 ppm with a range of 2.3
ppm to 198 ppm, and no envronmental problems have been associated with this parameter, it is unlikely that iron
poses any threat to either reclamation or the hydro-logic process.
Lead -The average lead concentration of samples analyzed was 3.1 ppm with a range of 1.15 to 5.4 ppm. The
suspect level of lead, according to the Montana Department of State Lands, is between ]0 and 20 ppm. Since none of
our lead values approach these values, no lead associated problems appear likely.
Maneanese -The average manganese concentration of our samples analyzed was found to be S.l ppm with a range of
1.8 to 10.97 ppm. The suspect level of manganese, according to the Guidelines of the Montana Department of State
Lands, is 60 ppm. Since all of our values are well below that value, it is highly unlikely that manganese related
problems appear possible.
Molvbderum -All of the molybdenum values were below the detection limits of the laboratory value of 0.5 ppm. [t
is unlikely that molybdenum poses any potential environmental problem.
Zinc -The average zinc concentration of our samples analyzed was 4.8 ppm with a range of 1.37 ppm to 13.4 ppm.
The suspect level of zinc, according to the Montana Departtent of State Lands, is greater than 40 ppm. Since all of
our zinc values are well below this range it appears highly unlikely that zinc will pose a problem in the reclamation
process of this site.
Mercury -Every sample analyzed was below the detection limits of less than 0.2 ppm. The suspect level of mercury,
according to the Montana Department of State Lands, is 0.4 ppm. It is unlikely that mercury will pose an
environmental problem to this site.
Sulfur -Three forms of sulfur have been analyzed in order to predict the likelihood of acid forming overburden. All
of the sulfur values sampled appear [o be low. However, without considering the buffering capacity of these strata

Permit Renewal No. 3 2_04-18 3/5/99
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