2012-02-28_REVISION - M1980244 ‎(95)‎

• Permit No: M1980244
• IBM Index Class Name: REVISION
• Doc Date: 2/28/2012
• Doc Name: VOL. 2, Appendix 2: Hydrologic Evaluation Part 1
• 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)
8
1
36
<10
21.9
9.5
20
Alkalinity, Bicarbonate (mg/I as CaCO3)
8
7
39.8
<10
9.4
12.3
<10
Alkalinity, Carbonate (mg/I as CaCO3)
7
0
0
0
0
0
0
Alkalinity, Total (mg/I as CaCO3)
3
2
32.7
<10
14.2
16.0
<10
Aluminum, Dissolved (mg/I as AI)
7
0
5.64
1.43
3.09
1.41
2.41
Arsenic, Dissolved (mg/I as As)
2
2
<0.005
<0.005
0.0025
ND
<0.005
Arsenic,Total Recoverable in Water as As mg/I
6
5
0.007
<0.005
0.003
0.002
<0.005
Cadmium, Dissolved (mg/I as Cd)
8
5
0.002
<0.001
0.001
0.001
<0.001
Calcium, Total (mg /I as Ca)
8
0
293
141
201
47
189.5
Chloride,Total in Water mg/I
8
0
95
34
60
25
59
Chromium, Dissolved (mg/I as Cr)
7
6
0.003
<0.001
0.001
0.001
<0.001
Chromium,Total Recoverable in Water as Cr mg /I
1
1
<0.001
<0.001
0.001
ND
ND
Copper, Dissolved (mg/I as Cu)
8
8
<0.005
<0.005
0.0025
ND
<0.005
Cyanide Free, mg /I
8
8
<0.01
<0.01
0.005
ND
<0.01
Cyanide, Total (mg/I as CN)
8
8
<0.01
<0.01
0.005
ND
<0.01
Flow, Rate Gallons /Min
68
0
163.6
0
5.9
23.0
0
Fluoride, Total (mg/I as F)
8
0
8.41
4.84
6.45
1.24
6.145
Hardness, Total (mg/I as CaCO3)
8
0
907
497
689
121
669
Iron, Dissolved (mg /I as Fe)
8
8
<0.05
<0.05
0.025
ND
<0.05
Iron,Total Recoverable in Water as Fe mg/I
6
5
0.196
<0.05
0.054
0.070
<0.05
Lead, Dissolved (mg/I as Pb)
8
8
<0.001
<0.001
0.0005
ND
<0.001
Magnesium, Total (mg/I as Mg)
8
0
53.4
35.1
45.5
5.9
44.9
Manganese, Dissolved (mg/I as Mn)
8
1
2.26
<0.01
0.71
0.78
0.419
Mercury, Total (mg /I as Hg)
8
8
<0.0002
<0.0002
0.0001
ND
<0.0002
Nickel, Dissolved (mg/I as Ni)
8
0
0.039
0.005
0.019
0.012
0.016
Nitrate Nitrogen, Total (mg/I as N)
8
0
5.84
0.608
2.83
1.81
3.055
Nitrite Nitrogen, Total (mg/I as N)
8
8
<0.05
<0.05
0.025
ND
<0.05
Nitrite plus Nitrate, mg/I as Nitrogen
4
0
5.84
0.824
3.50
2.08
3.665
Nitrogen, Ammonia, Total (mg/I as N)
8
8
<0.05
<0.05
0.025
ND
<0.05
Oil and Grease Visual (No =0, Yes =1)
4
0
0
0
0
0
0
Oxygen, Dissolved mg/L
8
0
8
4.8
6.3
1.2
6.15
pH, Field, Standard Units
8
0
6.92
5.81
6.25
0.38
6.1
Potassium, Total mg/I as K)
8
0
5.1
3.59
4.5
0.60
4.775
Selenium, Dissolved (mg/I as Se)
8
7
0.007
<0.005
0.003
0.002
<0.005
Silver, Dissolved (mg/I as Ag)
8
8
<0.001
<0.001
0.0005
ND
<0.001
Sodium, Total (mg/I as Na)
8
0
38.2
16.4
27.0
8.2
25.55
Specific Conductance,Field (umhos /cm @ 25C)
8
0
1630
934
1310
207
1337
Sulfate, Total (mg/I as 504)
8
0
810
471
628
100
615.5
Temperature, Water (Degrees Centigrade)
8
0
16.7
9.7
14.2
2.7
15.15
Total Dissolved Solids, mg /I
8
0
1450
912
1140
160
1128.5
Total Suspend Solids, mg /I
8
8
<10
<10
5
ND
<10
Weak Acid Dissociable Cyanide, mg /I
8
8
<0.01
<0.01
0.005
ND
<0.01
Zinc, Dissolved (mg /I as Zn)
8
0
0.877
0.054
0.382
0.263
0.289
TABLE 5 -4
SAMPLE LOCATION: SG -10
DRAINAGE: SQUAW GULCH
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.
Dissolved arsenic was analyzed until 2007. Total recoverable arsenic was analyzed from 1998 -2001 and since 2010. Both forms are provided to indicate the entire analytical history.
Dissolved chromium was analyzed from 1998 -2007. Total recoverable chromium was analyzed since 2007 Both forms are provided to indicate the entire analytical history.