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)
4
1
26
<10
19
18
9
Alkalinity, Bicarbonate (mg/I as CaCO3)
4
0
419
105
252
252
146
Alkalinity, Carbonate (mg/I as CaCO3)
4
0
0
0
0
0
0
Alkalinity, Total (mg/I as CaCO3)
4
0
344
86.1
207
207
120
Aluminum, Dissolved (mg/I as Al)
1
0
0.0671
0.0671
0.0671
0.0671
ND
Arsenic, Dissolved (mg/I as As)
1
1
<0.005
<0.005
0.005
0.0025
ND
Arsenic,Total Recoverable in Water as As mg/I
3
1
0.033
<0.005
0.015
0.014
0.017
Cadmium, Dissolved (mg/I as Cd)
4
4
<0.001
<0.001
0.001
0.0005
ND
Calcium, Total (mg/I as Ca)
4
0
59.7
29.5
41.8
41.8
12.9
Chloride,Total in Water mg/I
4
0
18
11
15
15
3
Chromium, Dissolved (mg/I as Cr)
1
1
<0.001
<0.001
0.001
0.0005
ND
Chromium,Total Recoverable in Water as Cr mg/I
3
0
0.094
0.001
0.034
0.034
0.052
Copper, Dissolved (mg/I as Cu)
4
3
0.00566
<0.005
0.005
0.003
0.002
Cyanide Free, mg/I
4
4
<0.01
<0.01
0.01
0.005
ND
Cyanide, Total (mg/I as CN)
4
4
<0.01
<0.01
0.01
0.005
ND
Fluoride, Total (mg/I as F)
4
0
1.11
0.882
1.00
1.00
0.09
Hardness, Total (mg/I as CaCO3)
4
0
210
106
157
157
49
Iron, Dissolved (mg/I as Fe)
4
0
12.9
1.44
6.29
6.29
5.20
Iron,Total Recoverable in Water as Fe mg/I
3
0
28.2
2.92
12.34
12.34
13.82
Lead, Dissolved (mg/I as Pb)
4
4
<0.001
<0.001
0.001
0.0005
ND
Magnesium, Total (mg/I as Mg)
4
0
14.9
7.81
11.3
11.3
3.5
Manganese, Dissolved (mg/I as Mn)
4
0
4.46
1.21
2.52
2.52
1.44
Mercury, Total (mg/I as Hg)
4
2
0.0005
<0.0002
0.0003
0.0003
0.0002
Nickel, Dissolved (mg/I as Ni)
4
2
0.01
<0.005
0.007
0.006
0.004
Nitrate Nitrogen, Total (mg/I as N)
4
0
0.103
0.066
0.080
0.080
0.018
Nitrite Nitrogen, Total (mg/I as N)
4
4
<0.05
<0.05
0.05
0.025
ND
Nitrogen, Ammonia, Total (mg/I as N)
4
0
2.09
0.494
1.30
1.30
0.78
Oil and Grease Visual (No =0, Yes =1)
7
0
0
0
0
0
0
Oxygen, Dissolved mg/L
5
0
3.9
0.9
2.1
2.1
1.2
pH, Field, Standard Units
5
0
6.4
6.12
6.24
6.24
0.13
Potassium, Total mg/I as K)
4
0
14.8
6.3
10.7
10.7
4.6
Selenium, Dissolved (mg/I as Se)
4
4
<0.005
<0.005
0.005
0.0025
ND
Silver, Dissolved (mg/I as Ag)
4
4
<0.001
<0.001
0.001
0.0005
ND
Sodium, Total (mg/I as Na)
4
0
70.7
35.4
52.7
52.7
17.4
Specific Conductance,Field (umhos /cm @ 25C)
5
0
716
202
503
503
216
Sulfate, Total (mg/I as SO4)
4
0
89.9
38.2
61.6
61.6
24.8
Temperature, Water (Degrees Centigrade)
5
0
7.6
4.4
6.2
6.2
1.2
Total Dissolved Solids, mg/I
4
0
487
281
386
386
85
Total Suspend Solids, mg/I
4
0
508
13
298
298
207
Water Level,Distance From Measuring Point (Feet)
5
0
19.53
9.95
17.43
17.43
4.18
Weak Acid Dissociable Cyanide, mg/I
4
4
<0.01
<0.01
0.01
0.005
ND
Zinc, Dissolved (mg/I as Zn)
4
4
<0.05
<0.05
0.05
0.025
ND
TABLE 6 -11
SAMPLE LOCATION: GVPZ -3
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 hmrt 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