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)
15
1
42
<10
25
8
26
Alkalinity, Bicarbonate (mg/I as CaCO3)
15
0
417
192
372
53
382
Alkalinity, Carbonate (mg/I as CaCO3)
15
0
0
0
0
0
0
Alkalinity, Total (mg/I as CaCO3)
1
0
157
157
157
ND
ND
Aluminum, Dissolved (mg/I as Al)
15
8
11.2
<0.05
0.79
2.88
<0.05
Arsenic, Dissolved (mg/I as As)
1
0
0.009
0.009
0.009
ND
ND
Arsenic,Total Recoverable in Water as As mg/I
15
2
0.078
<0.005
0.020
0.019
0.013
Cadmium, Dissolved (mg/I as Cd)
15
12
0.001
<0.001
0.001
0.0002
<0.001
Calcium, Total (mg/I as Ca)
15
0
661
267
367
90
340
Chloride,Total in Water mg/I
15
0
10
3.5
5.1
2.1
4.5
Chromium, Dissolved (mg/I as Cr)
15
12
0.027
<0.001
0.002
0.007
<0.001
Copper, Dissolved (mg/I as Cu)
15
11
0.009
<0.005
0.004
0.002
<0.005
Cyanide Free, mg/I
16
16
<0.01
<0.01
0.005
ND
<0.01
Cyanide, Total (mg/I as CN)
16
16
<0.01
<0.01
0.005
ND
<0.01
Fluoride, Total (mg/I as F)
15
0
3.48
1.83
2.70
0.35
2.68
Hardness, Total (mg/I as CaCO3)
15
0
1930
748
1003
275
919
Iron, Dissolved (mg/I as Fe)
15
10
7.61
<0.05
0.59
1.95
<0.05
Lead, Dissolved (mg/I as Pb)
15
14
0.015
<0.001
0.001
0.004
<0.001
Magnesium, Total (mg/I as Mg)
15
0
67.9
16.3
21.2
13.2
17.3
Manganese, Dissolved (mg/I as Mn)
14
4
1.59
<0.05
0.27
0.44
0.1015
Mercury, Total (mg/I as Hg)
15
15
<0.0002
<0.0002
0.0001
ND
<0.0002
Nickel, Dissolved (mg/I as Ni)
15
8
0.025
<0.005
0.007
0.008
<0.005
Nitrate Nitrogen, Total (mg/I as N)
15
14
0.105
<0.05
0.030
0.021
<0.05
Nitrite Nitrogen, Total (mg/I as N)
15
15
<0.05
<0.05
0.025
ND
<0.05
Nitrite plus Nitrate, mg/I as Nitrogen
14
13
0.105
<0.05
0.031
0.021
<0.05
Nitrogen, Ammonia, Total (mg/I as N)
15
15
<0.05
<0.05
0.025
ND
<0.05
Oil and Grease Visual (No =0, Yes =1)
1
0
0
0
0
ND
ND
Oxygen, Dissolved mg/L
26
0
10.5
1.5
5.6
2.0
5.3
pH, Field, Standard Units
27
0
7.52
6.33
6.89
0.26
6.84
Potassium, Total mg/I as K)
15
0
77.2
4.85
12.1
18.2
6.21
Selenium, Dissolved (mg/I as Se)
15
12
0.007
<0.005
0.003
0.002
<0.005
Silver, Dissolved (mg/I as Ag)
15
15
<0.001
<0.005
0.001
ND
<0.001
Sodium, Total (mg/I as Na)
15
0
72.3
45
53.8
7.1
51.7
Specific Conductance,Field (umhos /cm @ 25C)
27
0
2200
308
1511
412
1650
Sulfate, Total (mg/I as SO4)
15
0
892
654
709
65
691
Temperature, Water (Degrees Centigrade)
27
0
15.9
5.9
9.6
2.7
9.1
Total Dissolved Solids, mg/I
15
0
1599
1240
1414
80
1421
Total Suspend Solids, mg/I
15
0
38526
19
2790
9889
130
Water Level,Distance From Measuring Point (Feet)
29
0
149.34
144
144.98
0.95
144.66
Weak Acid Dissociable Cyanide, mg/I
16
16
<0.01
<0.01
0.005
ND
<0.01
Zinc, Dissolved (mg/I as Zn)
15
6
0.312
<0.05
0.067
0.072
0.055
TABLE 5 -9
SAMPLE LOCATION: GRMW -1A
DRAINAGE: GOLD RUN CREEK
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 from 2011. Total recoverable arsenic was analyzed until 2001. Both forms are provided to indicate the entire analytical history.