1988-04-11_PERMIT FILE - C1981008A ‎(5)‎

• Permit No: C1981008A
• IBM Index Class Name: PERMIT FILE
• Doc Date: 4/11/1988
• Doc Name: Nucla East Geology and Overburden Assessment
• Section_Exhibit Name: Tab 6 Attachment 6-1
• Media Type: D
• Archive: Yes

Table 6-1-5
Chemical and Physical Properties of Upper Dakota Coal Seam
and Encompassing Very Dark Gray Shale (Unit 2) for Phase I
and Phase II Samples Collected from the
Nucla East Study Area, Montrose County, Colorado
Parameter Phase I Hole No.1 Phase II Hole No.1
2
(Units) 870E 871E 872E 881E 882E 886E Mean SD
pH 7.7 3.6 8.1 7.7 8.9 4.5 6.7 2.2
EC, mmhos/cm 2.1 4.3 2.2 -- -- -- 2.9 1 .2
SP, % 33.8 48.9 30.6 -- -- -- 37.8 9.8
Sand, % 78.8 54.8 70.2 -- -- -- 67.9 12.2
Silt, % 15.3 30.3 22.5 -- -- -- 22.7 7.5
Clay, % 5.9 14.9 7.3 -- -- -- 9.4 4.8
Ca, meq/1 7.8 19.4 2.7 5.3 0.2 -- 7.1 7.4
Mg, meq/1 8.9 10.7 2.1 7.6 0.1 -- 5.9 4.5
Na, meq/1 4.5 1.1 16.4 4.3 19.5 -- 9.2 8.2
SAR 1 .6 0.3 12.4 1.7 44.2 -- 12.0 18.6
ALK, meq/1 3.3 <0.01 4.7 -- -- -- 2.7 2.4
SO4, meq/1 21.1 75.2 19.8 -- -- 38.7 31.6
AP 30.3 28.5 17.5 48.8 39.7 0.3 27.5 17.0
NP3 16.7 -4.7 14.5 15.1 10.3 2.8 9.1 8.4
ABP3 -13.6 -33.2 -3.0 -33.7 -29.4 2.5 -18.4 15.9
NOV PPm 2.3 1.2 3.2 -- -- -- 2.2 1.0
NH4, ppm 64.8 67.7 34.7 33.6 31.4 49.1 46.9 16.3
B, ppm 0.4 0.2 0.4 -- -- -- 0.3 0.1
Se, ppm <0.03 0.03 <0.03 -- -- -- <0.03 0.0
Mo, ppm 0.07 0.10 <0.11 -- -- -- <0.09 0.02
Fe, ppm 10.2 158.0 6.5 -- -- -- 58.2 86.4
Mn, ppm 0.2 5.9 0.2 -- -- -- 2.1 3.3
1
For drill hole location, see Exhibit 6-7, Geologic Cross Section and Sample Locations
3 SD - standard deviation.
AP - acid potential, NP - neutralization potential, ABP - acid-base potential ; Units are
tons of CaCO required per acre furrow slice; AP and ABP were calculated from pyritic
sulfur fractionation values.
6-1-32 Revised 04/11/88