PERMFILE57005

• Permit No: C1980005A
• IBM Index Class Name: Permit File
• Doc Date: 5/20/2005
• Section_Exhibit Name: Tab 7 Hydrology
• Media Type: D
• Archive: Yes

• •
Table 7- 12. Chemical Analyses of Groundwa ter From Alluvium
Seneca Mine, Routt County, Colorado

WeTI No. GW-S6-A GW-S6-A GW-S6-A GW-S6-A GW-S31 GW-S32 GW-S33
Aquifer: Little Grassy Creek Alluvium
Date of Collection 6/16/79 11/9/79 11/9/79 11/13/80 12/3/80 12/9/80 12/3/80
Analysist USGS Peabody USGS Peabody Peabody Peabody Peabody
FIELD PARAMETERS
Temperature (°C) 20.0 7.6 6.7 7.0 7.5 7.5
Conductivity (umhos/cm @ 25° C) 1450,0 1700.0 1700.0
pH (units) 7.2 7,1 7.1
LABORATORY PARAMETERSI

Acidity (as CaC0
)2 -385.0
3
Alkalinity (as CaC03) 280.0 407.0 330.0 394.0 426.0 550.0 410.0
Alkalinity, Bicarbonate (as CaC03) 407.0 394.0 426.0 550.0 410.0
Aluminum, Total 0.000 0.5 0.030 1.2 50.2 50.2 <0.2
Antimony 50.002 10.002 <0.002 50.002
Arsenic 0.002 <0.001 0.001 0.005 <0.001
Barium 0.2 0.3 50.2 50.2
Boron 0.060 0.039 0.100 0.302 0.499 0.541 0.327
Cadmium 0.001 <0,001 <0.002 50.002 <0.002 <0.002
Calcium 150.0 218.0 170.0 191.0 353.0 101.0 184.0
Chloride 20,0 18.0 15.0 26.0 12.0 14.0
Chromium <0.04 0.05 0.04 <0.04 <0.04
COD 14,4
Conductivity (umhos/cm @ 25° C) 2083,0 1821.0 1800.0 2660.0 1820.0 1290.0
Copper 0.003 <0.06 0.000 <0,02 <0.02 50.02 <0.02
~
~ Fluoride 0.2 0,23 0.2 0.18 0.40 0.96 0.34
;~ Hardness, Total 670.0 991,0 760.0 837.0 1464.0 492.0 717.0
n Hardness, Non-carbonate 670.0 430.0
. Iron, Total 2.11 1.10 2.73 50.0 386.0 20.9
~, Iron, Dissolved 0.020 0.030 0.03 0.28 50.02 0.03
Lead 0.000 <0,04 0.000 0.04 0.02 0.02 <0.02
~ Magnesium 72.0 102,0 0.082 103.0 130.0 58.0 69.0
.,
Table 7-12 continued on next page.