2012-02-28_REVISION - M1980244 ‎(96)‎

• Permit No: M1980244
• IBM Index Class Name: REVISION
• Doc Date: 2/28/2012
• Doc Name: VOL. 2, Appendix 2: Hydrologic Evaluation Part 2
• From: CRIPPLE CREEK & VICTOR GOLD MINING COMPANY
• To: DRMS
• Type & Sequence: AM10
• Email Name: TC1
• Media Type: D
• Archive: No

PARAMETER
Number of
Analyses
Number of
Non - Detect
Analyses
Maximum
Value
Minimum
Value
Average
Value
Standard
Deviation
Median
Value
Acidity, Total (mg/I as CaCO3)
5
3
24
<20
11
8
<10
Alkalinity, Bicarbonate (mg/I as CaCO3)
5
0
30.7
21.8
24.8
3.5
23.4
Alkalinity, Carbonate (mg/I as CaCO3)
5
0
0
0
0
0
0
Alkalinity, Total (mg/I as CaCO3)
5
0
25.1
17.9
20.3
2.8
19.2
Aluminum, Dissolved (mg/I as Al)
2
0
0.247
0.0222
0.135
0.159
0.1346
Arsenic, Dissolved (mg/I as As)
2
2
<0.005
<0.005
0.0025
ND
<0.005
Arsenic,Total Recoverable in Water as As mg/I
3
3
<0.005
<0.005
0.0025
ND
<0.005
Cadmium, Dissolved (mg/I as Cd)
5
5
<0.001
<0.001
0.0005
ND
<0.001
Calcium, Total (mg/I as Ca)
5
0
18.2
10.6
14.5
3.0
14.2
Chloride,Total in Water mg/I
5
0
20
2.25
6.4
7.7
2.75
Chromium, Dissolved (mg/I as Cr)
2
1
0.003
<0.001
0.002
0.002
0.001
Chromium,Total Recoverable in Water as Cr mg/I
3
0
0.064
0.003
0.030
0.031
0.024
Copper, Dissolved (mg/I as Cu)
5
4
0.009
<0.005
0.004
0.003
<0.005
Cyanide Free, mg/I
5
5
<0.01
<0.01
0.005
ND
<0.01
Cyanide, Total (mg/I as CN)
5
1
0.026
<0.01
0.015
0.008
0.015
Fluoride, Total (mg/I as F)
5
0
0.156
0.075
0.108
0.034
0.105
Hardness, Total (mg/I as CaCO3)
5
0
87.7
35.9
56.5
19.7
49.1
Iron, Dissolved (mg/I as Fe)
5
3
0.221
<0.05
0.077
0.085
<0.05
Iron,Total Recoverable in Water as Fe mg/I
3
0
11.2
0.668
5.7
5.3
5.35
Lead, Dissolved (mg/I as Pb)
5
5
<0.001
<0.001
0.0005
ND
<0.001
Magnesium, Total (mg/I as Mg)
5
0
11.3
2.28
4.9
3.6
3.89
Manganese, Dissolved (mg/I as Mn)
5
1
0.057
<0.01
0.027
0.019
0.023
Mercury, Total (mg/I as Hg)
5
3
0.001
<0.0002
0.0003
0.0004
<0.0002
Nickel, Dissolved (mg/I as Ni)
5
5
<0.005
<0.005
0.0025
ND
<0.005
Nitrate Nitrogen, Total (mg/I as N)
5
0
2.44
1.85
2.19
0.24
2.21
Nitrite Nitrogen, Total (mg/I as N)
5
5
<0.05
<0.05
0.025
ND
<0.05
Nitrogen, Ammonia, Total (mg/I as N)
5
5
<0.05
<0.05
0.025
ND
<0.05
Oil and Grease Visual (No =0, Yes =1)
7
0
0
0
0
0
0
Oxygen, Dissolved mg/L
6
0
7.4
0.2
3.8
2.7
3.95
pH, Field, Standard Units
6
0
6.47
5.97
6.15
0.21
6.045
Potassium, Total mg/I as K)
5
0
20.9
1.94
6.6
8.0
3.45
Selenium, Dissolved (mg/I as Se)
5
5
<0.005
<0.005
0.0025
ND
<0.005
Silver, Dissolved (mg/I as Ag)
5
5
<0.001
<0.001
0.0005
ND
<0.001
Sodium, Total (mg/I as Na)
5
0
15.2
11.4
13.8
1.5
14.3
Specific Conductance,Field (umhos /cm @ 25C)
6
0
227
130
188
33
194.9
Sulfate, Total (mg/I as SO4)
5
0
55.6
20.9
44.6
14.0
47.1
Temperature, Water (Degrees Centigrade)
6
0
6.6
4.7
5.9
0.7
6
Total Dissolved Solids, mg/I
5
0
292
144
206
66
185
Total Suspend Solids, mg/I
5
0
19700
12
4859
8427
615
Water Level,Distance From Measuring Point (Feet)
8
0
29.06
22.25
23.96
2.57
22.55
Weak Acid Dissociable Cyanide, mg /I
5
5
<0.01
<0.01
0.005
ND
<0.01
Zinc, Dissolved (mg/I as Zn)
5
5
<0.05
<0.05
0.025
ND
<0.05
TABLE 6 -9
SAMPLE LOCATION: GVPZ -1
DRAINAGE: GRASSY VALLEY
PERIOD OF RECORD: 2001 -2011
ND = Not determined. Applicable in two cases number of analyses = 1, or all analyses are non - detect.
Non - detect analyses are set at 1/2 the detection limit for average and standard deviation calculations
Median calculations use the laboratory analyses with less than detection values as negative
Dissolved arsenic was analyzed from 2008 Total recoverable arsenic was analyzed through 2007. Both forms are provided to indicate the entire analytical history