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)
33
33
<10
<10
5
ND
<10
Alkalinity, Bicarbonate (mg/I as CaCO3)
36
0
115
37.6
63
18
61
Alkalinity, Carbonate (mg/I as CaCO3)
36
0
5.69
0
0.2
1.0
0.0
Alkalinity, Total (mg/I as CaCO3)
15
0
94.4
31.1
49.8
17.9
47.6
Aluminum, Dissolved (mg/I as AI)
29
21
0.173
<0.05
0.043
0.041
<0.05
Arsenic,Total Recoverable in Water as As mg/I
36
36
<0.005
<0.005
0.0025
ND
<0.005
Bicarbonate (mg/I as HCO3 ion)
25
0
115
37.6
66.4
18.2
63
Cadmium, Dissolved (mg/I as Cd)
37
36
0.001
<0.001
0.0005
0.0001
<0.001
Calcium, Total (mg/I as Ca)
36
0
51.1
14.8
28.3
9.3
27.8
Carbonate (mg/I as CO3 ion)
25
24
5.69
<10
5.0
0.1
<10
Chloride,Total in Water mg/I
37
0
30.9
0.5
9.0
5.5
8.5
Chromium, Dissolved (mg/I as Cr)
25
25
<0.001
<0.001
0.0005
ND
<0.001
Chromium,Total Recoverable in Water as Cr mg/I
12
12
<0.001
<0.001
0.0005
ND
<0.001
Copper, Dissolved (mg /I as Cu)
37
37
<0.005
<0.005
0.0025
ND
<0.005
Cyanide Free, mg/I
36
36
<0.01
<0.01
0.005
ND
<0.01
Cyanide, Total (mg/I as CN)
36
36
<0.01
<0.01
0.005
ND
<0.01
Flow, Rate Gallons /Min
56
0
229
0
29.3
53.4
1.915
Fluoride, Total (mg/I as F)
37
0
0.857
0.52
0.66
0.08
0.646
Hardness, Total (mg/I as CaCO3)
37
0
168
49.1
96.7
29.8
94.50
Iron, Dissolved (mg /I as Fe)
37
25
0.095
<0.05
0.041
0.025
<0.05
Iron,Total Recoverable in Water as Fe mg/I
36
6
0.654
<0.05
0.147
0.142
0.09
Lead, Dissolved (mg/I as Pb)
37
36
0.001
<0.005
0.0006
0.0004
<0.001
Magnesium, Total (mg/I as Mg)
36
0
11.3
2.95
6.45
1.80
6.145
Manganese, Dissolved (mg/I as Mn)
37
30
0.093
<0.05
0.025
0.017
<0.05
Mercury, Total (mg/I as Hg)
36
36
<0.0002
<0.0002
0.0001
ND
<0.0002
Nickel, Dissolved (mg/I as Ni)
37
37
<0.005
<0.005
0.0025
ND
<0.005
Nitrate Nitrogen, Total (mg/I as N)
37
17
1.22
<0.5
0.23
0.27
0.067
Nitrite Nitrogen, Total (mg/I as N)
37
35
0.322
<0.05
0.037
0.053
<0.05
Nitrite plus Nitrate, mg/I as Nitrogen
23
7
1.22
<0.05
0.294
0.297
0.2090
Nitrogen, Ammonia, Total (mg/I as N)
37
36
0.073
<0.05
0.026
0.008
<0.05
Oil and Grease Visual (No =0, Yes =1)
12
0
0
0
0
0
0
Oxygen, Dissolved mg/L
36
0
11.2
3.4
8.2
2.1
7.83
pH, Field, Standard Units
37
0
9.17
6.61
7.60
0.45
7.550
Potassium, Total mg/I as K)
33
0
2.73
0.646
1.58
0.58
1.5
Selenium, Dissolved (mg/I as Se)
37
37
<0.005
<0.005
0.0025
ND
<0.005
Silver, Dissolved (mg/I as Ag)
37
37
<0.001
<0.001
0.0005
ND
<0.001
Sodium, Total (mg /I as Na)
32
0
15.8
5.4
9.5
2.7
9.045
Specific Conductance,Field (umhos /cm @ 25C)
36
0
598
83
264
120
235.5
Sulfate, Total (mg/I as SO4)
37
0
104
17.6
50
18.8
45.1
Temperature, Water (Degrees Centigrade)
37
0
21.3
0.1
8.4
6.3
6.7
Total Dissolved Solids, mg/I
33
0
274
70
138
36
139
Total Suspend Solids, mg /I
37
36
15
<10
5.3
2
<10
Weak Acid Dissociable Cyanide, mg/I
36
35
0.01
<0.01
0.005
0.001
<0.01
Zinc, Dissolved (mg /I as Zn)
37
36
0.05
<0 05
0 026
0.004
<0.05
TABLE 4 -5
SAMPLE LOCATION: BCSW
DRAINAGE: WILSON CREEK DRAINAGE
PERIOD OF RECORD: 1997 -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 chromium was analyzed from 1997 -2001 Total recoverable chromium was analyzed from 2003. Both forms are provided to indicate the entire analytical history.