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)
30
6
28
<10
13
6
12
Alkalinity, Bicarbonate (mg /I as CaCO3)
30
0
272
82.5
109
57
86.3
Alkalinity, Carbonate (mg/I as CaCO3)
30
0
0
0
0
0
0
Alkalinity, Total (mg/I as CaCO3)
13
0
223
69.5
115
63
73.2
Aluminum, Dissolved (mg/I as Al)
30
24
0.181
<0.05
0.03
0.030
<0.05
Arsenic, Dissolved (mg /I as As)
11
10
0.005
<0.005
0.003
0.001
<0.005
Cadmium, Dissolved (mg/I as Cd)
30
29
0.001
<0.001
0.001
0.0001
<0.001
Calcium, Total (mg/I as Ca)
30
0
50.5
18.5
24.2
9.8
20
Chloride,Total in Water mg/I
30
0
4.75
2
3.2
0.7
3
Chromium, Dissolved (mg/I as Cr)
30
28
0.001
<0.001
0.001
0.0001
<0.001
Copper, Dissolved (mg /I as Cu)
30
28
0.005
<0.005
0.003
0.0006
<0.005
Cyanide Free, mg/I
30
29
0.01
<0.01
0.005
0.001
<0.01
Cyanide, Total (mg/I as CN)
30
29
0.01
<0.01
0.005
0.001
<0.01
Fluoride, Total (mg/I as F)
30
0
0.65
0.368
0.420
0.059
0.4035
Hardness, Total (mg /I as CaCO3)
30
0
231
73.7
100
45
80.9
Iron, Dissolved (mg/I as Fe)
30
28
0.074
<0.5
0.03
0.04
<0.05
Lead, Dissolved (mg /I as Pb)
30
29
0.001
<0.005
0.001
0.0004
<0.001
Magnesium, Total (mg/I as Mg)
29
0
26
6.55
9.6
5.2
7.64
Manganese, Dissolved (mg /I as Mn)
30
25
0.201
<0.05
. 0.03
0.035
<0.05
Mercury, Total (mg /I as Hg)
30
29
0.0002
<0.002
0.0001
0.0002
<0.0002
Nickel, Dissolved (mg/I as Ni)
29
27
0.006
<0.005
0.003
0.0008
<0.005
Nitrate Nitrogen, Total (mg/I as N)
30
0
0.556
0.209
0.459
0.075
0.484
Nitrite Nitrogen, Total (mg/I as N)
30
29
0.05
<0.05
0.03
0.005
<0.05
Nitrite plus Nitrate, mg /I as Nitrogen
19
0
0.556
0.421
0.493
0.041
0.496
Nitrogen, Ammonia, Total (mg/I as N)
30
29
0.05
<0.05
0.03
0.005
<0.05
Oil and Grease Visual (No =0, Yes =1)
13
0
0
0
0
0
0
Oxygen, Dissolved mg /L
35
0
20.1
0.1
5.7
3.2
5.8
pH, Field, Standard Units
35
0
7.33
5.98
6.54
0.28
6.46
Potassium, Total mg/I as K)
29
4
1.7
<0.5
0.7
0.3
0.69
Selenium, Dissolved (mg/I as Se)
30
29
0.005
<0.005
0.003
0.0005
<0.005
Silver, Dissolved (mg/I as Ag)
30
29
0.001
<0.001
0.001
0.0001
<0.001
Sodium, Total (mg/I as Na)
29
0
10.1
8.28
8.9
0.4
8.86
Specific Conductance,Field (umhos /cm @ 25C)
34
0
500
86.3
230
85
205.5
Sulfate, Total (mg/I as 504)
30
0
37
18.5
25.9
5.2
24.65
Temperature, Water (Degrees Centigrade)
35
0
12.1
5.9
7.5
1.3
7.1
Total Dissolved Solids, mg/I
27
0
281
120
151
43
135
Total Suspend Solids, mg/I
30
24
30
<10
7
6
<10
Water Level,Distance From Measuring Point (Feet)
47
0
36.7
5.21
20.9
8.9
20.76
Weak Acid Dissociable Cyanide, mg/I
30
29
0.01
<0.01
0.005
0.001
<0.01
Zinc, Dissolved (mg/I as Zn)
30
29
0.05
<0.05
0.03
0.005
<0.05
TABLE 6 -16
SAMPLE LOCATION: GVMW -7B
DRAINAGE: GRASSY VALLEY
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.