2012-02-28_REVISION - M1980244 ‎(95)‎

• Permit No: M1980244
• IBM Index Class Name: REVISION
• Doc Date: 2/28/2012
• Doc Name: VOL. 2, Appendix 2: Hydrologic Evaluation Part 1
• 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)
29
25
34
<10
7.6
7.1
<10
Alkalinity, Bicarbonate (mg/I as CaCO3)
31
0
269
38.1
126
45
127
Alkalinity, Carbonate (mg/I as CaCO3)
31
0
0
0
0
0
0
Alkalinity, Total (mg/I as CaCO3)
17
0
221
73.1
121
35.4
109
Aluminum, Dissolved (mg/I as Al)
17
13
0.387
<0.05
0.059
0.091
<0.05
Arsenic, Dissolved (mg/I as As)
10
10
<0.005
<0.005
0.0025
ND
<0.005
Arsenic,Total Recoverable in Water as As mg /I
31
12
0.32
<0.005
0.08
0.10
0.04
Cadmium, Dissolved (mg/I as Cd)
31
31
<0.001
<0.001
0.0005
ND
<0.001
Calcium, Total (mg/I as Ca)
31
0
223
63.1
132
34.0
129
Chloride,Total in Water mg/I
31
0
24.3
4.5
11.4
4.4
11
Chromium, Dissolved (mg/I as Cr)
15
13
0.001
<0.001
0.001
4.5E -19
<0.001
Chromium,Total Recoverable in Water as Cr mg/I
16
14
0.007
<0.001
0.0009
0.0016
<0.001
Copper, Dissolved (mg/I as Cu)
31
30
0.005
<0.005
0.0025
0.0006
<0.005
Cyanide Free, mg/I
32
31
0.06
<0.02
0.01
0.01
<0.01
Cyanide, Total (mg/I as CN)
32
18
0.15
<0.01
0.02
0.03
<0.01
Flow, Rate Gallons /Min
32
0
200
0
33.9
46.2
17.1
Fluoride, Total (mg/I as F)
31
0
2.18
0.192
1.26
0.35
1.25
Hardness, Total (mg/I as CaCO3)
31
0
849
224
525
137
515
Iron, Dissolved (mg/I as Fe)
31
7
1.96
<0.05
0.19
0.35
0.087
Iron,Total Recoverable in Water as Fe mg/I
31
0
93.2
0.086
11.1
21.0
2.91
Lead, Dissolved (mg /I as Pb)
31
30
0.007
<0.001
0.0007
0.0012
<0.001
Magnesium, Total (mg/I as Mg)
31
0
70.9
16.1
47.4
13.2
48.3
Manganese, Dissolved (mg/I as Mn)
30
0
7.44
0.097
2.00
2.04
0.9065
Mercury, Total (mg/I as Hg)
31
26
0.0029
<0.0002
0.0003
0.0006
<0.0002
Nickel, Dissolved (mg/I as Ni)
31
24
0.009
<0.005
0.003
0.002
<0.005
Nitrate Nitrogen, Total (mg/I as N)
31
1
7.78
<0.05
1.89
1.39
1.73
Nitrite Nitrogen, Total (mg/I as N)
31
31
<0.05
<0.05
0.025
ND
<0.05
Nitrite plus Nitrate, mg/I as Nitrogen
15
0
7.78
0.847
2.18
1.88
1.51
Nitrogen, Ammonia, Total (mg/I as N)
31
18
0.404
<0.05
0.08
0.09
<0.05
Oil and Grease Visual (No =0, Yes =1)
16
0
0
0
0
0
0
Oxidation Reduction Potential (my)
1
0
156.4
156.4
156.4
ND
ND
Oxygen, Dissolved mg/L
31
0
11.7
2.9
7.4
1.7
7.19
pH, Field, Standard Units
32
0
8.03
5.07
7.27
0.62
7.41
Potassium, Total mg/I as K)
31
0
47.5
3.92
10.8
8.0
8
Selenium, Dissolved (mg/I as Se)
31
29
0.006
<0.005
0.003
0.001
<0.005
Silver, Dissolved (mg/I as Ag)
31
31
<0.001
<0.005
0.001
ND
<0.001
Sodium, Total (mg/I as Na)
31
0
64.8
21
39.5
7.6
39.5
Specific Conductance,Field (umhos /cm @ 25C)
32
0
2210
412
1055
327
1025
Sulfate, Total (mg/I as SO4)
31
0
742
205
474
123
441
Temperature, Water (Degrees Centigrade)
32
0
18.8
4
9.6
3.3
8.7
Total Dissolved Solids, mg /I
29
0
1200
371
794
176
800
Total Suspend Solids, mg/I
31
12
2888
<10
471
760
140
Weak Acid Dissociable Cyanide, mg /I
32
30
0.073
<0.01
0.008
0.012
<0.01
Zinc, Dissolved (mg/I as Zn)
31
31
<0.05
<0.05
0.025
ND
<0.05
TABLE 4 -3
SAMPLE LOCATION: T -3
DRAINAGE: THERESA GULCH (NORTH FORK OF WILSON CREEK)
PERIOD OF RECORD: 1994 -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 since 2008. Total recoverable arsenic was analyzed since 1996. Both forms are provided to indicate the entire analytical history.
Dissolved chromium was analyzed until 2001. Total recoverable chromium since 2002. Both forms are provided to indicate the entire analytical history.