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)
37
36
0
<10
5
1
<10
Alkalinity, Bicarbonate (mg/I as CaCO3)
48
0
201
67
123
36
119
Alkalinity, Carbonate (mg/I as CaCO3)
48
1
2
<5
0.1
0.5
0
Alkalinity, Total (mg/I as CaCO3)
35
0
165
59.3
111
28.1
116
Aluminum, Dissolved (mg/I as Al)
26
16
0.122
<0.05
0.04
0.03
<0.05
Arsenic,Total Recoverable in Water as As mg/I
48
42
0.007
<0.005
0.003
0.001
<0.005
Cadmium, Dissolved (mg/I as Cd)
48
48
<0.001
<0.001
0.0005
ND
<0.001
Calcium, Total (mg/I as Ca)
47
0
73
30.1
54
9.0
55.7
Chloride,Total in Water mg/I
48
0
36
8
17
6
15.75
Chromium, Dissolved (mg/I as Cr)
13
13
<0.001
<0.001
0.0005
ID
<0.001
Chromium,Total Recoverable in Water as Cr mg/I
35
35
<0.001
<0.001
0.0005
ND
<0.001
Copper, Dissolved (mg/I as Cu)
48
40
0.012
<0.005
0.003
0.002
<0.005
Cyanide Free, mg/I
48
48
<0.01
<0.01
0.005
ND
<0.01
Cyanide, Total (mg/I as CN)
48
48
<0.01
<0.01
0.005
ND
<0.01
Flow, Rate Gallons /Min
50
0
850
0
169
200
98.6
Fluoride, Total (mg/I as F)
48
1
1.52
<1
1.10
0.17
1.09
Hardness, Total (mg/I as CaCO3)
48
0
264
0
193
44
202
Iron, Dissolved (mg/I as Fe)
47
43
14
<0.05
0.32
2.0
<0.05
Iron,Total Recoverable in Water as Fe mg/I
48
7
4.12
<0.05
0.37
0.67
0.18
Lead, Dissolved (mg/I as Pb)
48
48
<0.001
<0.001
0.0005
ND
<0.001
Magnesium, Total (mg/I as Mg)
47
0
21.7
9.35
15.5
2.7
15.3
Manganese, Dissolved (mg/I as Mn)
48
35
0.153
<0.05
0.026
0.035
<0.01
Mercury, Total (mg/I as Hg)
47
47
<0.0002
<0.0002
0.0001
ND
<0.0002
Nickel, Dissolved (mg/I as Ni)
48
44
0.015
<0.005
0.003
0.002
<0.005
Nitrate Nitrogen, Total (mg/I as N)
48
0
16.3
1.03
4.86
3.86
3.365
Nitrite Nitrogen, Total (mg/I as N)
48
48
<0.05
<0.5
0.030
ND
<0.05
Nitrite plus Nitrate, mg/I as Nitrogen
12
0
9.71
1.28
3.14
2.30
2.59
Nitrogen, Ammonia, Total (mg/I as N)
48
47
0.061
<0.05
0.03
0.01
<0.05
Oil and Grease Visual (No =0, Yes =1)
37
0
0
0
0
0
0
Oxygen, Dissolved mg/L
51
0
11.5
6.3
9.1
1.4
9.1
pH, Field, Standard Units
51
0
8.65
6.89
7.89
0.41
7.98
Potassium, Total mg/I as K)
37
0
6.89
2.9
4.4
1.0
4.14
Selenium, Dissolved (mg/I as Se)
48
48
<0.005
<0.005
0.0025
ND
<0.005
Silver, Dissolved (mg/I as Ag)
48
48
<0.001
<0.001
0.0005
ND
<0.001
Sodium, Total (mg/I as Na)
37
0
89.1
17.9
42.5
18.8
35.2
Specific Conductance,Field (umhos /cm @ 25C)
51
0
824
253
545
133
577
Sulfate, Total (mg/I as SO4)
48
0
188
81.6
138
28.7
140
Temperature, Water (Degrees Centigrade)
51
0
17.9
0.1
6.1
5.8
4.1
Total Dissolved Solids, mg/I
48
0
520
239
363
67
374.5
Total Suspend Solids, mg/I
48
35
204
<10
14
30
<10
Weak Acid Dissociable Cyanide, mg/I
48
48
<0.01
<0.01
0.005
ND
<0.01
Zinc, Dissolved (mg/I as Zn)
48
48
<0.005
<0.05
0.025
ND
<0.05
TABLE 4 -6
SAMPLE LOCATION: WCSW -01
DRAINAGE: WILSON CREEK DRAINAGE
PERIOD OF RECORD: 2000 -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 until 2002. Total recoverable chromium was analyzed from 2002. Both forms ore provided to indicate the entire analytical history.