2010-12-17_REVISION - C1981019 ‎(153)‎

• Permit No: C1981019
• IBM Index Class Name: REVISION
• Doc Date: 12/17/2010
• Doc Name: Exhibit 7 Item 21 Collom Project Pre-Feasibility Hdyrology Report
• Type & Sequence: PR3
• Email Name: JRS
• Media Type: D
• Archive: No

34 a Surface water
Table 4.4 Spring water quality summary
Parameter
Units
MCL
(mg /1)
SPRS -01
12/05/04
SPRLC -01
12/08/04
SPRLC -02
12/06/04
SPRLC -03
12/06/04
SPRJ -01
12/05/04
SPRJ -02
12/08104
SPRC -01
12/02/04
SPRC -02 SPRC -03 SPRC -04
12/02/04 12/07/04 12/07/04
METALS
Aluminum
dissolved
mg /I
0.05 -0.2
Secondary
<0.1
<0.1
<0.1
<0.1
<0.1
<0.1
<0.1
<0.1
<0.1
<0.1
Arsenic
dissolved
mg /I
0.05
Primary
<0.005
<0.005
<0.005
<0.005
<0.005
<0.005
<0.005
<0.005
<0.005
<0.005
Cadmium
dissolved
mg /I
0.005
Primary
<0.002
<0.002
<0.002
<0.002
<0.002
<0.002
<0.002
<0.002
<0.002
<0.002
Copper
dissolved
mg /I
1.3
Primary
<0.01
<0.01
<0.01
<0.01
<0.01
<0.01
<0.01
<0.01
<0.01
<0.01
Iron
dissolved
mg /I
0.3
Secondary
<0.05
<0.05
<0.05
<0.05
<0.05
<0.05
<0.05
<0.05
0
<0.05
Lead
dissolved
mg /I
0.015
Primary
<0.02
<0.02
<0.02
<0.02
<0.02
<0.02
<0.02
<0.02
<0.02
<0.02
Manganese
dissolved
mg /I
0.05
Secondary
<0.02
<0.02
0
0
0
<0.02
<0.02
<0.02
0
<0.02
Mercury
dissolved
mg /I
0.002
Primary
<0.001
<0.001
<0.001
<0.001
<0.001
<0.001
<0.001
<0.001
<0.001
<0.001
Molybdenum
dissolved
mg /I
<0.02
<0.02
<0.02
<0.02
<0.02
<0.02
<0.02
<0.02
<0.02
<0.02
Selenium
dissolved
mg /I
0.05
Primary
0
0
<0.005
<0.005
<0.005
0
0
0
<0.005
<0.005
Zinc
dissolved
mg /I
5
Secondary
<0.01
0
<0.01
<0.01
<0.01
<0.01
0
0
<0.01
<0.01
Calcium
total
mg /I
134
119
105
77
77
179
208
60
154
137
Magnesium
total
mg /I
130
63
74
34
34
157
187
92
95
100
Sodium
total
mg /I
43
17
48
7
7
127
35
75
33
35
NON METALS
Alkalinity Total (As CaCO3)
total
mg /I
451
587
496
295
295
587
362
458
457
532
pH(lab)
S.U.
8.00
8.10
8.00
8.20
8.20
8.00
7.80
8.30
7.90
8.00
Sulfate
total
mg /I
452
701
140
50
50
701
894
158
349
263
Total Dissolved Solids
total
mg /I
500
Secondary
1,210
1,720
770
390
390
1,720
1,780
760
1,060
1,050
Total Suspended Solids
total
mg /I
<5
96
146
43
43
96
<5
7
11
76
Acidity Total (As CaCO3)
total
mg /I
<5
<5.
<5
<5
<5
<5
<5
<5
<5
<5
Alkalinity Bicarbonate as HCO3
total
mg /I
400
Secondary`
551
716
605
359
359
716
442
549
558
649
Alkalinity Carbonate as CO3
total
mg /I
400
Secondary`
<5
<5
<5
<5
<5
<5
<5
5
<5
<5
Alkalinity Hydroxide as OH
total
mg /I
400
Secondary'
<5
<5
<5
<5
<5
<5
<5
<5
<5
<5
Chloride
total
mg /I
250
Secondary
19
53
23
13
13
53
17
40
24
22
Electrical Conductivity
total
us/cm
1,500
2,030
1,120
626
626
2,030
1,890
1,120
1,390
1,380
Fluoride
total
mg /I
4
Primary
1
0
0
0
0
0
0
0
0
1
Hardness Calcium /Magnesium
total
mg /I
869
1090
568
331
331
1090
1290
527
776
752
(As CaCO3)
Nitrogen Nitrate (As N)
total
mg /I
1 0
Primary
2
0
0
1
1
0
20
2
<0.1
1
Nitrogen Nitrite (As N)
total
mg /I
1
Primary
<0.1
<0.1
<0.1
<0.1
<0.1
<0.1
<0.1
<0.1
<0.1
<0.1
Nitrogen Nitrate - Nitrite (as N)
total
mg /I
2
0
0
1
1
0
20
2
<0.1
1
Phosphorus Orthophosphate as P
total
mg /I
<0.1
<0.1
<0.1
<0.1
<0.1
<0.1
<0.1
<0.1
<0.1
<0.1
FIELD PARAMETERS
pH Field
total
S.U.
6.5 -8.5
Secondary
7.33
7.18
7.48
7.18
7.18
7.18
7.70
8.66
7.19
7.18
Electrical Conductivity
total
us/cm
1,545
2,158
1,254
1,370
13,70
2,158
2,125
1,273
1,456
1,370
Temperature °C
total
°C
4
4
5
6
6
4
5
8
2
6
Dissolved Oxygen
total
mg /I
8
6
4
2
2
6
3
2
1
2
Flow Rate
total
gpm
10
1
1
1
1
5
0
1
Blank cells for Samples and Detects indicates
zero.
= measured as total alkalinity as CaCO
Primary (MCL) and Secondary water quality standards
are from EPA 816 -F -03 -013, (2003).
2572 -R2 Co /owyo Coal Company
Water Management Consultants