2010-12-08_PERMIT FILE - C1981008A ‎(15)‎

• Permit No: C1981008A
• IBM Index Class Name: Permit File
• Doc Date: 12/8/2010
• Doc Name: SOIL RESOURCE INFORMATION
• Section_Exhibit Name: Section 2.04.9 Soil Resource Information
• Media Type: D
• Archive: Yes

Table 2.04.9 -2: Criteria for Pre -Mine Soil Evaluations (Original Soil Sampling)
PARAMETER - UNITS
THRESHOLD SUITABILITY LEVEL'
pH
Conductivity (mmhos /cm)
Saturation percentage ( %)
Sodium adsorption ratio'
Calcium carbonate percentage
Selenium (ppm)
Particle size'
Coarse fragments ( %)
<6.1 >7.8
4.0
>80%
<25%
>4
15%
>2 ppm
All soil textures except:
s, Is, sc, sic, c
15 %'
' The threshold levels are to be used as a guide in evaluating the suitability of a soil material for
reclamation. An evaluation should take into account the "total system ". Interactive parameters
may either nullify or verify the significance of a potential problem.
2 The actual maximum acceptable salt level will depend on the plant species proposed in the
revegetation plan and the potential for upward salt movement.
' Specific level depends upon clay mineralogy, soil texture, and saturation percentage according
to Dollhopf et al., 1983.
° The specific percentage of clay or sand allowed will depend upon clay mineralogy, organic matter
content, consistence, soil lift, spoil characteristics, and size of sand fraction.
Revised September 2010 (PR 06) 2.04.9 -18