2013-09-26_REVISION - C1981008 ‎(4)‎

• Permit No: C1981008
• IBM Index Class Name: Revision
• Doc Date: 9/26/2013
• Doc Name: Permit Page Edits - Soil Resources Information 2.04.9
• Type & Sequence: PR8
• Email Name: DAB
• Media Type: D
• Archive: No

Table 2.04.9 -2: Criteria for Pre -Mine Soil Evaluations (Original Soil Sampling)
PARAMETER - UNITS
pH
Conductivity (mmhos /cm)
Saturation percentage ( %)
Sodium adsorption ratio3
Calcium carbonate percentage
Selenium (ppm)
Particle size
Coarse fragments ( %)
THRESHOLD SUITABILITY LEVEL'
<6.1, >7.8
4.02
>80%
<25%
>4
15%
>2 ppm
All soil textures except:
s, Is, sc, sic, c
15 %5
' The threshold levels are to be used as a guide in evaluating the sattabifitq ualit 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.
3 Specific level depends upon clay mineralogy, soil texture, and saturation percentage according
to Dollhopf et al., 1983.
4 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.
August 2013 (PR 08) 2.04.9 -24