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)
7
7
<10
<10
5
ND
<10
Alkalinity, Bicarbonate (mg/I as CaCO3)
7
0
60.2
15.4
26.9
15.0
22.8
Alkalinity, Carbonate (mg/I as CaCO3)
7
0
0
0
0
0
0
Aluminum, Dissolved (mg/I as Al)
7
4
0.15
<0.05
0.06
0.05
<0.05
Arsenic,Total Recoverable in Water as As mg/I
7
7
<0.005
<0.005
0.0025
ND
<0.005
Cadmium, Dissolved (mg/I as Cd)
7
6
0.001
<0.001
0.001
0.0002
<0.001
Calcium, Total (mg/I as Ca)
7
0
38.4
3.9
9.6
12.7
4.9
Chloride,Total in Water mg/I
7
6
3.5
<0.5
0.7
1.2
<0.5
Chromium, Dissolved (mg /I as Cr)
7
4
0.001
<0.001
0.001
0.0003
<0.001
Copper, Dissolved (mg /I as Cu)
7
7
<0.005
<0.005
0.0025
ND
<0.005
Cyanide Free, mg/I
7
7
<0.01
<0.01
0.005
ND
<0.01
Cyanide, Total (mg/I as CN)
7
7
<0.01
<0.01
0.005
ND
<0.01
Fluoride, Total (mg/I as F)
7
0
2.82
0.183
0.58
0.99
0.214
Hardness, Total (mg /I as CaCO3)
7
0
116
12.7
30.5
37.9
15.8
Iron, Dissolved (mg/I as Fe)
7
7
<0.05
<0.05
0.025
ND
<0.05
Lead, Dissolved (mg/I as Pb)
7
7
<0.001
<0.001
0.0005
ND
<0.001
Magnesium, Total (mg/I as Mg)
7
0
4.88
0.71
1.55
1.51
0.86
Manganese, Dissolved (mg/I as Mn)
7
7
<0.05
<0.05
0.025
ND
<0.05
Mercury, Total (mg/I as Hg)
7
7
<0.0002
<0.0002
0.0001
ND
<0.0002
Nickel, Dissolved (mg/I as Ni)
7
7
<0.005
<0.005
0.0025
ND
<0.005
Nitrate Nitrogen, Total (mg/I as N)
7
0
1.45
0.789
0.99
0.21
0.954
Nitrite Nitrogen, Total (mg/I as N)
7
7
<0.05
<0.05
0.025
ND
<0.05
Nitrite plus Nitrate, mg/I as Nitrogen
7
0
1.45
0.789
0.99
0.21
0.954
Nitrogen, Ammonia, Total (mg/I as N)
7
7
<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
13
0
10.8
3.8
6.2
1.7
6
pH, Field, Standard Units
13
0
75
5.27
6.34
0.60
6.41
Potassium, Total mg/I as K)
7
1
1.5
<0.5
0.8
0.4
0.71
Selenium, Dissolved (mg/I as Se)
7
7
<0.005
<0.005
0.0025
ND
<0.005
Silver, Dissolved (mg/I as Ag)
7
7
<0.001
<0.005
0.001
ND
<0.001
Sodium, Total (mg/I as Na)
7
0
23.2
3.94
7.4
7.0
4.69
Specific Conductance,Field (umhos /cm @ 25C)
13
0
405
44
90
96
70
Sulfate, Total (mg/I as SO4)
7
6
97.2
<10
18
35
<10
Temperature, Water (Degrees Centigrade)
13
0
12.9
6
8.2
2.1
7.7
Total Dissolved Solids, mg /I
5
0
212
24
64
83
29
Total Suspend Solids, mg/I
7
0
85
10
30
27
19
Water Level,Distance From Measuring Point (Feet)
27
0
53.95
31.8
51.1
4.3
52.35
Weak Acid Dissociable Cyanide, mg /I
7
7
<0.01
<0.01
0.005
ND
<0.01
Zinc, Dissolved (mg/I as Zn)
7
7
<0.05
<0.05
0.025
ND
<0.05
TABLE 6 -7
SAMPLE LOCATION: GVMW -3B
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 laboratory analyses with less than detection values as negative