2007-07-30_PERMIT FILE - C1981008A ‎(43)‎

• Permit No: C1981008A
• IBM Index Class Name: Permit File
• Doc Date: 7/30/2007
• Section_Exhibit Name: Section 2.04.6 Geology Description
• Media Type: D
• Archive: Yes

Table 2.04.6-3
• Criteria For Evaluating Overburden, Interburden, Underburden,
Regraded Spoils Suitability
New Horizon 2. Montrose County. Colorado -March 1998
•
MARGINALLY UNSUITABLE EXCEPT
PARAMETER SUITABLE SUITABLE WITH AMEILORATION

PH x5.5'
58.5' 4.5.5.4'
8.8-9.0' <4.5
>9.0
Salanity (mmhos/cm)° s8 9125 >12
Saturation Percentage (°/.) <85'
>25° z85
525
Sodium Adsorption' Ratio 51710
s1410 12-18
15.22 >18"
>22"
Exchangeable Sodium'
Percentage (%) s1515
s18t5 16-18
19-22 >78"
>22"
Particle Size (texture)" Is, sl, I",sill, scl,
el, sicl c, sc,13 sic, si, s c, sc, sic," with 50%. C m-Co s
Boron (ppm) 0.5.5" <0.5 >5'~
Molybdenum (ppm)1° s15'S 0.8-2.0 >2.0-850
Selenium (ppm) s0.111 0.2-0.5 >0.555
Nitrate Nitrogen (ppm) 10-5015 50-60 >605'
Ammonium Nitrogen (ppm) <16055 <70 >1605'
Acid-Base Potential >-5S° >-55i
Manganese (ppm) 1-705' <7 >70
Iron (ppm) 5-3003° <5 >300
Zinc (ppm) 1-703° <t >70

PARAMETER
SUITABLE MARGINALLY
SUITABLE UNSUITABLE EXCEPT WITH
AMEILORATION
Copper (ppm) 0.2-305° <0.2 >30
Nickel (ppm) <2.05' 2-20 >20
Selenium (ppm) <0.2f0 0.2-0.5 >0.551
Arsenic (ppm) <2.032 >2.0
Cadmium (pm) <533 >5
Mercury (ppm) <0.534 >0.5
Lead (ppm) <1035 10-100 >10025
Footnotes:
• t. These suitability levels are to be used as a guide in evaluating the degree of suitability for
an overburden, interburden, underburden, or regraded spoil material for reclamation. The
REVISED August 2006 2.04.6-30