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)
5
0
50
16
39
14
44
Alkalinity, Bicarbonate (mg/I as CaCO3)
5
2
0
<10
2
3
0
Alkalinity, Carbonate (mg/I as CaCO3)
5
0
0
0
0
0
0
Alkalinity, Total (mg/I as CaCO3)
1
1
<10
<10
5
ND
ND
Aluminum, Dissolved (mg/I as Al)
5
0
6.76
1.76
4.90
2.54
6.73
Arsenic, Dissolved (mg/I as As)
1
1
<0.005
<0.005
0.0025
ND
ND
Arsenic,Total Recoverable in Water as As mg/I
4
3
0.018
<0.005
0.006
0.008
<0.005
Cadmium, Dissolved (mg/I as Cd)
5
0
0.005
0.002
0.004
0.001
0.004
Calcium, Total (mg/I as Ca)
5
0
90.1
55.6
69.7
14.3
64.4
Chloride,Total in Water mg/I
4
0
3.5
2.5
3.5
0.9
3.25
Chromium, Dissolved (mg /I as Cr)
5
4
0.003
<0.001
0.001
0.001
<0.001
Copper, Dissolved (mg/I as Cu)
5
1
0.031
<0.005
0.017
0.012
0.017
Cyanide Free, mg/I
5
5
<0.01
<0.01
0.005
ND
<0.01
Cyanide, Total (mg/I as CN)
5
5
<0.01
<0.01
0.005
ND
<0.01
Flow, Rate Gallons /Min
65
0
35.9
0
1.0
5.3
0
Fluoride, Total (mg /I as F)
5
0
2.46
1.43
1.97
0.43
1.95
Hardness, Total (mg /I as CaCO3)
5
0
343
202
259
55
236
Iron, Dissolved (mg /I as Fe)
5
1
0.543
<0.05
0.249
0.212
0.189
Iron,Total Recoverable in Water as Fe mg/I
4
0
1.36
0.355
0.746
0.432
0.634
Lead, Dissolved (mg/I as Pb)
5
5
<0.001
<0.001
0.0005
ND
<0.001
Magnesium, Total (mg/I as Mg)
5
0
28.6
15.4
20.6
5.0
19.3
Manganese, Dissolved (mg/I as Mn)
5
0
2.39
0.605
1.487
0.670
1.6
Mercury, Total (mg/I as Hg)
5
5
<0.0002
<0.0002
0.0001
ND
<0.0002
Nickel, Dissolved (mg/I as Ni)
5
0
0.065
0.027
0.045
0.015
0.041
Nitrate Nitrogen, Total (mg/I as N)
5
0
4.65
2.93
3.77
0.77
3.93
Nitrite Nitrogen, Total (mg/I as N)
5
5
<0.05
<0.05
0.025
ND
<0.05
Nitrite plus Nitrate, mg/I as Nitrogen
3
0
4.65
2.93
3.53
0.97
3.02
Nitrogen, Ammonia, Total (mg/I as N)
5
5
<0.05
<0.05
0.025
ND
<0.05
Oil and Grease Visual (No =0, Yes =1)
3
0
0
0
0
0
0
Oxygen, Dissolved mg/L
5
0
9.22
6
7.5
1.7
8.6
pH, Field, Standard Units
6
0
4.81
3.71
4.21
0.39
4.15
Potassium, Total mg/I as K)
5
0
3.01
1.44
2.01
0.63
1.76
Selenium, Dissolved (mg/I as Se)
5
4
0.006
<0.005
0.003
0.002
<0.005
Silver, Dissolved (mg/I as Ag)
5
5
<0.001
<0.001
0.0005
ND
<0.001
Sodium, Total (mg/I as Na)
5
0
17.6
14
15.5
1.4
15.7
Specific Conductance,Field (umhos /cm @ 25C)
6
0
821
491
586
121
563
Sulfate, Total (mg/I as SO4)
5
0
358
243
285
55
247
Temperature, Water (Degrees Centigrade)
6
0
12
6.8
8.6
1.8
8.05
Total Dissolved Solids, mg/I
5
0
692
418
517
123
450
Total Suspend Solids, mg/I
5
5
<10
<10
5
ND
<10
Weak Acid Dissociable Cyanide, mg/I
5
5
<0.01
<0.01
0.005
ND
<0.01
Zinc, Dissolved (mg /I as Zn)
5
0
0.443
0.21
0.331
0.104
0.332
TABLE 5 -2
SAMPLE LOCATION: SG -05
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 in 2007. Total recoverable arsenic was analyzed from 1998 -2001. Both forms are provided to indicate the entire analytical history
Dissolved chromium was analyzed until 2007. Both forms are provided to indicate the entire analytical history.