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)
35
35
<10
<10
5
ND
<10
Alkalinity, Bicarbonate (mg/I as CaCO3)
35
0
56.1
35.7
43.8
3.6
43.9
Alkalinity, Carbonate (mg/I as CaCO3)
35
0
0
0
0
0
0
Alkalinity, Total (mg/I as CaCO3)
13
0
46
29.2
36.1
3.8
35.9
Aluminum, Dissolved (mg/I as Al)
35
15
0.274
<0.05
0.08
0.08
0.0187
Arsenic, Dissolved (mg/I as As)
5
5
<0.005
<0.005
0.0025
ND
<0.005
Arsenic,Total Recoverable in Water as As mg/I
30
28
0.059
<0.005
0.005
0.011
<0.005
Cadmium, Dissolved (mg/I as Cd)
35
33
0.00107
<0.001
0.0005
0.0001
<0.001
Calcium, Total (mg/I as Ca)
35
0
12.5
6
9.6
1.6
9.28
Chloride,Total in Water mg/I
34
17
1.5
<0.5
0.5
0.3
0
Chromium, Dissolved (mg/I as Cr)
35
26
0.002
<0.001
0.0008
0.0005
<0.001
Copper, Dissolved (mg/I as Cu)
35
35
<0.005
<0.005
0.0025
ND
<0.005
Cyanide Free, mg/I
35
35
<0.01
<0.01
0.005
ND
<0.01
Cyanide, Total (mg/I as CN)
35
35
<0.01
<0.01
0.005
ND
<0.01
Fluoride, Total (mg/I as F)
35
1
0.319
<0.05
0.25
0.05
0.254
Hardness, Total (mg/I as CaCO3)
35
0
40.2
21.2
31.6
4.6
32.3
Iron, Dissolved (mg/I as Fe)
35
28
0.432
<0.05
0.04
0.07
<0.05
Lead, Dissolved (mg/I as Pb)
35
32
0.002
<0.005
0.001
0.0004
<0.001
Magnesium, Total (mg/I as Mg)
35
0
2.3
1.4
1.8
0.3
1.79
Manganese, Dissolved (mg/I as Mn)
35
29
0.36
<0.05
0.04
0.06
<0.05
Mercury, Total (mg/I as Hg)
35
35
<0.0002
<0.0002
1E -04
ND
<0.0002
Nickel, Dissolved (mg/I as Ni)
35
35
<0.001
<0.005
0.002
ND
<0.005
Nitrate Nitrogen, Total (mg/I as N)
35
0
0.861
0.095
0.270
0.114
0.261
Nitrite Nitrogen, Total (mg/I as N)
35
34
0.503
<0.05
0.04
0.08
<0.05
Nitrite plus Nitrate, mg/I as Nitrogen
29
0
0.872
0.095
0.283
0.167
0.256
Nitrogen, Ammonia, Total (mg /I as N)
35
34
0.055
<0.05
0.03
0.01
<0.05
Oil and Grease Visual (No =0, Yes =1)
7
0
0
0
0
0
0
Oxygen, Dissolved mg/L
41
0
10.4
0.5
5.8
2.2
5.9
pH, Field, Standard Units
42
0
11.53
6.16
7.13
0.99
6.935
Potassium, Total mg/I as K)
35
0
3.87
0.66
1.24
0.59
1.08
Selenium, Dissolved (mg/I as Se)
35
35
<0.005
<0.005
0.003
ND
<0.005
Silver, Dissolved (mg/I as Ag)
35
33
0.001
<0.005
0.001
0.0004
<0.001
Sodium, Total (mg/I as Na)
35
0
7.19
4.89
6.02
0.45
6.01
Specific Conductance,Field (umhos /cm @ 25C)
41
0
399
56.4
112.3
63.8
90.1
Sulfate, Total (mg/I as SO4)
35
28
16.6
<10
6.5
3.5
<10
Temperature, Water (Degrees Centigrade)
42
0
10.7
2.7
6.4
1.9
6.4
Total Dissolved Solids, mg/I
33
0
87
41
54
14
46
Total Suspend Solids, mg/I
35
5
217
<10
40
44
22
Water Level,Distance From Measuring Point (Feet)
48
0
62.11
50.25
55.87
1.95
55.59
Weak Acid Dissociable Cyanide, mg/I
35
35
<0.01
<0.01
0.005
ND
<0.01
Zinc, Dissolved (mg /I as Zn)
35
34
0.055
<0.05
0.03
0.01
<0.05
TABLE 6 -19
SAMPLE LOCATION: CAM -1B
DRAINAGE: GRASSY VALLEY
PERIOD OF RECORD: 1997 -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 lahoratory analyses with less than detection values as negative
Dissolved arsenic was analyzed from 2002. Total recoverable arsenic was analyzed through 2001. Both forms are provided to indicate the entire analytical history.