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)
31
0
18
10
12
2
12
Alkalinity, Bicarbonate (mg/I as CaCO3)
31
0
124
94.7
102
5
102
Alkalinity, Carbonate (mg/I as CaCO3)
31
0
0
0
0
0
0
Alkalinity, Total (mg/I as CaCO3)
11
0
102
80.7
87
6
85.3
Aluminum, Dissolved (mg/I as Al)
31
26
0.182
<0.05
0.032
0.031
<0.05
Arsenic, Dissolved (mg/I as As)
11
11
<0.005
<0.005
0.003
ND
<0.005
Arsenic,Total Recoverable in Water as As mg/I
20
20
<0.005
<0.005
0.003
ND
<0.005
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
672
499
574
37
576
Chloride,Total in Water mg/I
31
0
49.6
4.5
11.4
8.9
7
Chromium, Dissolved (mg/I as Cr)
31
26
0.003
<0.001
0.001
0.001
<0.001
Copper, Dissolved (mg/I as Cu)
31
21
0.012
<0.005
0.004
0.002
<0.005
Cyanide Free, mg /I
31
31
<0.01
<0.01
0.005
ND
<0.01
Cyanide, Total (mg/I as CN)
31
31
<0.01
<0.01
0.005
ND
<0.01
Fluoride, Total (mg/I as F)
31
0
4.15
3.4
3.8
0.2
3.78
Hardness, Total (mg/I as CaCO3)
31
0
1930
1597
1794
87
1806
Iron, Dissolved (mg/I as Fe)
31
1
1.48
<0.05
0.95
0.38
0.972
Lead, Dissolved (mg/I as Pb)
31
22
0.003
<0.001
0.001
0.001
<0.001
Magnesium, Total (mg/I as Mg)
31
0
106
71.1
89
8.5
87.7
Manganese, Dissolved (mg/I as Mn)
31
1
4.69
<0.05
3.26
0.83
3.39
Mercury, Total (mg/I as Hg)
31
31
<0.0002
<0.0002 -
0.0001
ND
<0.0002
Nickel, Dissolved (mg/I as Ni)
31
23
0.018
<0.005
0.005
0.004
<0.005
Nitrate Nitrogen, Total (mg/I as N)
31
25
0.137
<0.05
0.037
0.028
<0.05
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
19
17
0.0998
<0.05
0.031
0.018
<0.05
Nitrogen, Ammonia, Total (mg/I as N)
31
31
<0.05
<0.05
0.025
ND
<0.05
Oil and Grease Visual (No =0, Yes =1)
10
0
0
0
0
0
0
Oxygen, Dissolved mg/L
27
0
4.2
0.09
0.6
1.0
0.2
pH, Field, Standard Units
31
0
7.57
6.81
7.05
0.14
7.01
Potassium, Total mg/I as K)
31
0
4.89
3.61
4.27
0.33
4.35
Selenium, Dissolved (mg/I as Se)
31
24
0.015
<0.005
0.004
0.004
<0.005
Silver, Dissolved (mg/I as Ag)
31
30
0.001
<0.001
0.001
0.0001
<0.001
Sodium, Total (mg/I as Na)
31
0
45.9
31.5
34.8
3.2
33.9
Specific Conductance,Field (umhos /cm @ 25C)
31
0
3400
351
2430
814
2630
Sulfate, Total (mg/I as SO4)
31
0
1903
1504
1723
85
1726
Temperature, Water (Degrees Centigrade)
31
0
11.7
7.3
9.5
0.9
9.3
Total Dissolved Solids, mg/I
29
0
2787
2557
2677
60
2669
Total Suspend Solids, mg/I
31
18
64
<10
12
12
<10
Water Level,Distance From Measuring Point (Feet)
32
0
76.98
54.1
66.0
6.0
64.87
Weak Acid Dissociable Cyanide, mg/I
31
31
<0.01
<0.01
0.005
ND
<0.01
Zinc, Dissolved (mg /I as Zn)
31
26
0.138
<0.05
0.033
0.023
<0.05
TABLE 5 -10
SAMPLE LOCATION: GRMW -2A
DRAINAGE: GOLD RUN CREEK
PERIOD OF RECORD: 1998 -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 2002. Total recoverable arsenic was analyzed until 2002. Both forms are provided to indicate the entire analytical history