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)
5
4
46
<10
13
18
<10
Alkalinity, Bicarbonate (mg/I as CaCO3)
5
0
70.8
19.3
32.4
21.7
22.4
Alkalinity, Carbonate (mg/I as CaCO3)
5
0
0
0
0
0
0
Alkalinity, Total (mg/I as CaCO3)
5
0
58
15.8
26.5
17.8
18.4
Aluminum, Dissolved (mg/I as Al)
2
0
0.433
0.322
0.378
0.078
0.3775
Arsenic, Dissolved (mg/I as As)
2
2
<0.005
<0.005
0.003
ND
<0.005
Arsenic,Total Recoverable in Water as As mg/I
3
2
0.007
<0.005
0.004
0.003
<0.005
Cadmium, Dissolved (mg /I as Cd)
5
5
<0.001
<0.001
0.001
ND
<0.001
Calcium, Total (mg/I as Ca)
5
0
13.3
8.25
10.5
2.0
10.5
Chloride,Total in Water mg/I
5
0
23.5
9
18.4
5.8
21.3
Chromium, Dissolved (mg/I as Cr)
2
2
<0.001
<0.001
0.0005
ND
<0.001
Chromium,Total Recoverable in Water as Cr mg/I
3
1
0.015
<0.001
0.006
0.008
0.002
Copper, Dissolved (mg/I as Cu)
5
3
0.008
<0.005
0.005
0.003
<0.005
Cyanide Free, mg/I
5
5
<0.01
<0.01
0.01
ND
<0.01
Cyanide, Total (mg /I as CN)
5
5
<0.01
<0.01
0.01
ND
<0.01
Fluoride, Total (mg /I as F)
5
0
0.685
0.378
0.506
0.127
0.4.86
Hardness, Total (mg /I as CaCO3)
5
0
50.5
31
42
9
45.8
Iron, Dissolved (mg /I as Fe)
5
0
3.75
0.2
1.12
1.49
0.61
Iron,Total Recoverable in Water as Fe mg/I
3
0
12.4
0.42
4.89
6.54
1.85
Lead, Dissolved (mg /I as Pb)
5
0
0.003
0.001
0.002
0.001
0.002
Magnesium, Total (mg/I as Mg)
5
0
5.36
2.09
3.91
1.28
4.06
Manganese, Dissolved (mg/I as Mn)
5
0
0.43
0.019
0.175
0.164
0.189
Mercury, Total (mg/I as Hg)
5
2
0.0005
<0.0002
0.0003
0.0002
0.0005
Nickel, Dissolved (mg/I as Ni)
5
3
0.006
<0.005
0.004
0.002
<0.005
Nitrate Nitrogen, Total (mg/I as N)
5
1
0.583
<0.05
0.24
0.22
0.192
Nitrite Nitrogen, Total (mg/I as N)
5
4
0.089
<0.05
0.04
0.03
<0.05
Nitrogen, Ammonia, Total (mg/I as N)
5
2
0.571
<0.05
0.23
0.23
0.264
Oil and Grease Visual (No =0, Yes =1)
7
0
0
0
0
0
0
Oxygen, Dissolved mg/L
5
0
4.8
0.4
2.2
1.8
1.7
pH, Field, Standard Units
5
0
6.26
5.9
6.1
0.1
6.06
Potassium, Total mg/I as K)
5
0
7.17
1.76
4.45
2.04
4.68
Selenium, Dissolved (mg/I as Se)
5
5
<0.005
<0.005
0.003
ND
<0.005
Silver, Dissolved (mg/I as Ag)
5
5
<0.001
<0.001
0.001
ND
<0.001
Sodium, Total (mg/I as Na)
5
0
19.5
17.3
18.2
0.8
18
Specific Conductance,Field (umhos /cm @ 25C)
5
0
232
157.5
196
29
206
Sulfate, Total (mg/I as SO4)
5
0
45.7
26.2
34.0
7.5
31.6
Temperature, Water (Degrees Centigrade)
5
0
7.4
4.9
5.9
1.0
5.5
Total Dissolved Solids, mg/I
5
0
736
167
349
231
285
Total Suspend Solids, mg /I
5
0
14800
40
3679
6275
1150
Water Level,Distance From Measuring Point (Feet)
5
0
37.18
31.34
34.55
2.11
34.91
Weak Acid Dissociable Cyanide, mg /I
5
5
<0.01
<0.01
0.01
ND
<0.01
Zinc, Dissolved (mg /I as Zn)
5
5
<0.05
<0.05
0.03
ND
<0.05
TABLE 6 -12
SAMPLE LOCATION: GVPZ -4
DRAINAGE: GRASSY VALLEY
PERIOD OF RECORD: 2001 -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 2008 Total recoverable arsenic was analyzed through 2007 Both forms are provided to indicate the entire analytical history