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

Monitor Well
GVMW -21A
GVMW -23A
GVMW -238
GVMW -24A
Period of Record
2007 -2011
2007 -2011
2007 -2011
2011
Count of Samples (water quality analyses)
2
2
2
1
PARAMETER
Maximum
Value
Minimum
Value
Maximum
Value
Minimum
Value
Maximum
Value
Minimum
Value
Maximum
Value
Minimum
Value
Acidity, Total (mg/I as CaCO3)
<10
<10
16
<10
14
12
10
10
Alkalinity, Bicarbonate (mg/I as CaCO3)
68.3
52
108
92.9
89.6
66.6
100
100
Alkalinity, Carbonate (mg/I as CaCO3)
0
0
0
0
0
0
0
0
Alkalinity, Total (mg/I as CaCO3)
56
42.6
88.4
76.1
73.5
54.6
82.1
82.1
Aluminum, Dissolved (mg/I as Al)
0.067
0.026
0.056
0.0161
0.0407
0.025
0.045
0.045
Arsenic, Dissolved (mg/I as As)
<0.005
<0.005
<0.005
<0.005
<0.005
<0.005
<0.005
<0.005
Cadmium, Dissolved (mg/I as Cd)
<0.001
<0.001
<0.001
<0.001
<0.001
<0.001
<0.001
<0.001
Calcium, Total (mg/I as Ca)
16.5
7.06
25
19.4
19.9
16.8
23
23
Chloride,Total in Water mg/I
1
0.74
6.46
3.25
3.25
2.1
5.59
5.59
Chromium, Dissolved (mg/I as Cr)
0.002
<0.001
<0.001
<0.001
<0.001
<0.001
<0.001
<0.001
Copper, Dissolved (mg/I as Cu)
<0.005
<0.005
<0.005
<0.005
<0.005
<0.005
<0.005
<0.005
Cyanide Free, mg/I
<0.01
<0.01
<0.01
<0.01
<0.01
<0.01
<0.01
<0.01
Cyanide, Total (mg/I as CN)
<0.01
<0.01
<0.01
<0.01
<0.01
<0.01
<0.01
<0.01
Fluoride, Total (mg/I as F)
0.606
0.236
0.471
0.38
0.382
0.338
0.849
0.849
Hardness, Total (mg/I as CaCO3)
65.2
36.5
92.2
70.8
71
69.5
92.1
92.1
Iron, Dissolved (mg/I as Fe)
0.0735
<0.05
0.061
<0.05
<0.05
<0.05
<0.05
<0.05
Lead, Dissolved (mg/I as Pb)
<0.001
<0.001
<0.001
<0.001
<0.001
<0.001
<0.001
<0.001
Magnesium, Total (mg/I as Mg)
4.98
4.59
7.23
5.44
6.7
5.18
8.41
8.41
Manganese, Dissolved (mg/I as Mn)
0.0133
<0.01
0.07
0.0254
0.033
0.0112
0.085
0.085
Mercury, Total (mg/I as Hg)
<0.0002
<0.0002
<0.0002
<0.0002
0.0004
<0.0002
<0.0002
<0.0002
Nickel, Dissolved (mg/I as Ni)
<0.005
<0.005
<0.005
<0.005
<0.005
<0.005
<0.005
<0.005
Nitrate Nitrogen, Total (mg/I as N)
0.651
0.552
0.364
0.085
0.864
0.42
<0.05
<0.05
Nitrite Nitrogen, Total (mg/I as N)
<0.05
<0.05
<0.05
<0.05
<0.05
<0.05
<0.05
<0.05
Nitrogen, Ammonia, Total (mg/I as N)
<0.05
<0.05
<0.05
<0.05
<0.05
<0.05
<0.05
<0.05
Oil and Grease Visual (No =0, Yes =1)
0
0
0
0
0
0
0
0
Oxygen, Dissolved mg/L
3.71
2.4
3.2
2.1
4.2
2.8
1.19
1.19
pH, Field, Standard Units
7.77
5.66
6.58
6.2
6.62
5.38
7.24
7.24
Potassium, Total mg/I as K)
2.45
1.03
1.7
0.896
5.77
1.13
3.14
3.14
Selenium, Dissolved (mg/I as Se)
<0.005
<0.005
<0.005
<0.005
<0.005
<0.005
<0.005
<0.005
Silver, Dissolved (mg/I as Ag)
<0.001
<0.001
<0.001
<0.001
<0.001
<0.001
<0.001
<0.001
Sodium, Total (mg/I as Na)
15.7
7.3
13.7
13.3
12.8
11.2
24.2
24.2
Specific Conductance,Field (umhos /cm @ 25C)
202
116
205
51.3
159.7
39.6
298
298
Sulfate, Total (mg/I as 504)
27.6
11.3
26.2
19.9
21.1
11.6
61.1
61.1
Temperature, Water (Degrees Centigrade)
10.2
10
8.4
8.4
7.9
7.5
9.6
9.6
Total Dissolved Solids, mg/I
126
74
142
135
112
111
223
223
Total Suspend Solids, mg/I
62
18
360
26
107
<10
<10
<10
Water Level,Distance From Measuring Point (Feet)
190
86.8
12
8.8
11.38
8.34
128.79
128.79
Weak Acid Dissociable Cyanide, mg/I
<0.01
<0.01
<0.01
<0.01
<0.01
<0.01
<0.01
<0.01
Zinc, Dissolved (mg /I as Zn)
0.107
<0.05
<0.05
<0.05
<0.05
<0.05
<0.05
<0.05
TABLE 6 -29
SAMPLE LOCATIONS: GVMW- 21,23,24
DRAINAGE: GRASSY VALLEY
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 overage and standard deviation calculations.
Median calculations use the laboratory analyses with less than detection values as negative