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)
4
2
0
<10
3
3
<5
Alkalinity, Bicarbonate (mg/I as CaCO3)
4
0
217
195
203
10
200.5
Alkalinity, Carbonate (mg/I as CaCO3)
4
0
13.5
0
3.38
6.75
0
Alkalinity, Total (mg/I as CaCO3)
4
0
200
160
172
19
164.5
Aluminum, Dissolved (mg/I as AI)
4
0
0.787
0.049
0.404
0.380
0.389
Arsenic, Dissolved (mg/I as As)
4
3
0.011
<0.005
0.005
0.004
<0.005
Cadmium, Dissolved (mg/I as Cd)
4
4
<0.001
<0.001
0.0005
ND
<0.001
Calcium, Total (mg/I as Ca)
4
0
19.6
13.6
17.6
2.8
18.55
Chloride,Total in Water mg/I
4
0
6.5
4.17
5.1
1.0
4.875
Chromium, Dissolved (mg/I as Cr)
4
4
<0.001
<0.001
0.0005
ND
<0.001
Copper, Dissolved (mg/I as Cu)
4
3
0.075
<0.005
0.021
0.036
<0.005
Cyanide Free, mg/I
4
4
<0.01
<0.01
0.005
ND
<0.01
Cyanide, Total (mg/I as CN)
4
4
<0.01
<0.01
0.005
ND
<0.01
Fluoride, Total (mg/I as F)
4
0
3.03
1.74
2.29
0.54
2.185
Hardness, Total (mg/I as CaCO3)
4
0
203
62.6
109
64
85.55
Iron, Dissolved (mg/I as Fe)
4
2
0.653
<0.05
0.27
0.30
0.163
Lead, Dissolved (mg/I as Pb)
4
2
0.002
<0.001
0.001
0.001
0
Magnesium, Total (mg/I as Mg)
4
0
12.3
6.96
9.3
2.4
8.925
Manganese, Dissolved (mg/I as Mn)
4
0
0.105
0.024
0.054
0.038
0.043
Mercury, Total (mg/I as Hg)
4
4
<0.0002
<0.0002
0.0001
ND
<0.0002
Nickel, Dissolved (mg/I as Ni)
4
3
0.005
<0.005
0.003
0.001
<0.005
Nitrate Nitrogen, Total (mg/I as N)
4
3
0.177
<0.05
0.06
0.08
<0.05
Nitrite Nitrogen, Total (mg/I as N)
4
3
0.05
<0.05
0.03
0.01
<0.05
Nitrogen, Ammonia, Total (mg/I as N)
4
2
0.281
<0.05
0.10
0.12
0.0135
Oil and Grease Visual (No =0, Yes =1)
6
0
0
0
0
0
0
Oxygen, Dissolved mg/L
3
0
7.6
2.8
4.9
2.5
4.3
pH, Field, Standard Units
4
0
8.29
7.4
7.9
0.4
7.91
Potassium, Total mg/I as K)
4
0
7.87
1.88
4.45
3.01
4.025
Selenium, Dissolved (mg/I as Se)
4
4
<0.005
<0.005
0.003
ND
<0.005
Silver, Dissolved (mg/I as Ag)
4
4
<0.001
<0.001
0.0005
ND
<0.001
Sodium, Total (mg/I as Na)
4
0
149
55.5
82.9
44.3
63.45
Specific Conductance,Field (umhos /cm @ 25C)
4
0
480
87
301
192
318
Sulfate, Total (mg/I as SO4)
4
0
161
43.4
76.2
56.7
50.25
Temperature, Water (Degrees Centigrade)
4
0
8.5
7
7.9
0.6
8.05
Total Dissolved Solids, mg/I
4
0
924
220
416
339
260.5
Total Suspend Solids, mg/I
4
1
39
<10
25
17
28
Water Level,Distance From Measuring Point (Feet)
6
0
2.8
2.21
2.6
0.2
2.56
Weak Acid Dissociable Cyanide, mg/I
4
4
<0.01
<0.01
0.005
ND
<0.01
Zinc, Dissolved (mg/I as Zn)
4
4
<0.05
<0.05
0.03
ND
<0.05
TABLE 6 -27
SAMPLE LOCATION: GVMW -22A
DRAINAGE: GRASSY VALLEY
PERIOD OF RECORD: 2007 -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