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)
3
0
0
0
0
0
0
Alkalinity, Bicarbonate (mg/I as CaCO3)
3
0
16.2
0
5
9
0
Alkalinity, Carbonate (mg/I as CaCO3)
3
0
41.7
21.6
33.5
10.5
37.2
Alkalinity, Hydroxide (mg/I as CaCO3)
2
0
22.8
19.1
21.0
2.6
20.95
Alkalinity, Total (mg/I as CaCO3)
3
0
126
75.2
101
25
103
Aluminum, Dissolved (mg/I as AI)
3
0
0.269
0.08
0.19
0.10
0.222
Arsenic, Dissolved (mg/I as As)
3
3
<0.005
<0.005
0.0025
ND
<0.005
Cadmium, Dissolved (mg/I as Cd)
3
3
<0.001
<0.001
0.0005
ND
<0.001
Calcium, Total (mg/I as Ca)
3
0
15.4
4.81
8.67
5.85
5.81
Chloride,Total in Water mg/I
3
0
3
2.26
2.75
0.42
2.98
Chromium, Dissolved (mg/I as Cr)
3
3
<0.001
<0.001
0.0005
ND
<0.001
Copper, Dissolved (mg/I as Cu)
3
3
<0.005
<0.005
0.0025
ND
<0.005
Cyanide Free, mg/I
3
3
<0.01
<0.01
0.005
ND
<0.01
Cyanide, Total (mg/I as CN)
3
3
<0.01
<0.01
0.005
ND
<0.01
Fluoride, Total (mg/I as F)
3
0
2.58
2.09
2.38
0.26
2.46
Hardness, Total (mg/I as CaCO3)
3
0
44.6
16.6
27.7
14.9
21.9
Iron, Dissolved (mg/I as Fe)
3
3
<0.05
<0.05
0.025
ND
<0.05
Lead, Dissolved (mg/I as Pb)
3
3
<0.001
<0.001
0.0005
ND
<0.001
Magnesium, Total (mg/I as Mg)
3
1
2.4
<0.5
1.4
1.1
1.5
Manganese, Dissolved (mg/I as Mn)
3
3
<0.01
<0.01
0.005
ND
<0.01
Mercury, Total (mg/I as Hg)
3
3
<0.0002
<0.0002
0.0001
ND
<0.0002
Nickel, Dissolved (mg/I as Ni)
3
3
<0.005
<0.005
0.0025
ND
<0.005
Nitrate Nitrogen, Total (mg/I as N)
3
1
0.32
<0.05
0.13
0.16
0.052
Nitrite Nitrogen, Total (mg/I as N)
3
2
0.164
<0.05
0.07
0.08
<0.05
Nitrogen, Ammonia, Total (mg/I as N)
3
1
0.262
<0.05
0.12
0.13
0.067
Oil and Grease Visual (No =0, Yes =1)
6
0
0
0
0
0
0
Oxygen, Dissolved mg/L
15
0
7.6
0.1
2.4
2.2
1.48
pH, Field, Standard Units
15
0
12.83
6.35
11.44
1.76
12.15
Potassium, Total mg/I as K)
3
0
10
5.97
8.3
2.1
8.83
Selenium, Dissolved (mg/I as Se)
3
3
<0.005
<0.005
0.0025
ND
<0.005
Silver, Dissolved (mg/I as Ag)
3
3
<0.001
<0.001
0.0005
ND
<0.001
Sodium, Total (mg/I as Na)
3
0
71.1
40.6
51.5
17.0
42.9
Specific Conductance,Field (umhos /cm @ 25C)
15
0
4260
122
1233
1116
811
Sulfate, Total (mg/I as SO4)
3
0
59.4
11.5
35.3
24.0
34.9
Temperature, Water (Degrees Centigrade)
15
0
8.7
5.3
6.9
1.1
6.8
Total Dissolved Solids, mg/I
3
0
222
150
176
40
156
Total Suspend Solids, mg/I
3
1
86
<10
53
43
68
Water Level,Distance From Measuring Point (Feet)
13
0
151.1
1.5
27.8
47.8
4.54
Weak Acid Dissociable Cyanide, mg/I
3
3
<0.01
<0.01
0.005
ND
<0.01
Zinc, Dissolved (mg/I as Zn)
3
3
<0.05
<0.05
0.03
ND
<0.05
TABLE 6 -26
SAMPLE LOCATION: GVMW -9A
DRAINAGE: GRASSY VALLEY
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