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)
25
20
16
<10
6
3
<10
Alkalinity, Bicarbonate (mg /I as CaCO3)
26
0
330
230
273
26
275
Alkalinity, Carbonate (mg/I as CaCO3)
26
0
0
0
0
0
0
Alkalinity, Total (mg/I as CaCO3)
10
0
270
193
226
23
219.5
Aluminum, Dissolved (mg/I as Al)
25
20
0.319
<0.05
0.049
0.067
<0.05
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
25
22
0.013
<0.005
0.003
0.003
<0.005
Cadmium, Dissolved (mg /I as Cd)
26
26
<0.001
<0.001
0.0005
ND
<0.001
Calcium, Total (mg/I as Ca)
26
0
78.6
25.8
37.1
10.8
35.1
Chloride,Total in Water mg/I
25
1
16
<0.5
5.0
3.9
4
Chromium, Dissolved (mg/I as Cr)
25
19
0.002
<0.001
0.001
0.0003
<0.001
Copper, Dissolved (mg/I as Cu)
26
25
0.005
<0.005
0.003
0.0005
<0.005
Cyanide Free, mg/I
26
26
<0.01
<0.01
0.01
ND
<0.01
Cyanide, Total (mg/I as CN)
26
26
<0.01
<0.01
0.01
ND
<0.01
Fluoride, Total (mg /I as F)
25
0
0.866
0.305
0.526
0.127
0.526
Hardness, Total (mg/I as CaCO3)
26
0
379
186
225
45
213
Iron, Dissolved (mg/I as Fe)
25
7
2
<0.05
0.40
0.55
0.178
Lead, Dissolved (mg/I as Pb)
26
25
0.005
<0.001
0.001
0.001
<0.001
Magnesium, Total (mg /I as Mg)
26
0
44.6
26.8
31.9
4.4
30.75
Manganese, Dissolved (mg/I as Mn)
26
1
0.816
<0.05
0.355
0.211
0.3225
Mercury, Total (mg/I as Hg)
26
25
0.0003
<0.002
0.0001
0.0002
<0.0002
Nickel, Dissolved (mg /I as Ni)
26
23
0.01
<0.005
0.003
0.002
<0.005
Nitrate Nitrogen, Total (mg/I as N)
26
21
0.15
<0.05
0.04
0.03
<0.05
Nitrite Nitrogen, Total (mg/I as N)
26
26
<0.05
<0.05
0.03
ND
<0.05
Nitrite plus Nitrate, mg /I as Nitrogen
24
19
0.15
<0.05
0.04
0.03
<0.05
Nitrogen, Ammonia, Total (mg /I as N)
26
11
0.206
<0.05
0.082
0.065
0.067
Oil and Grease Visual (No =0, Yes =1)
6
0
0
0
0
0
0
Oxygen, Dissolved mg/L
30
0
6.6
0.1
3.0
1.7
3.2
pH, Field, Standard Units
32
0
8.38
6.54
7.44
0.42
7.48
Potassium, Total mg/I as K)
26
0
11.6
1.62
3.81
2.72
2.785
Selenium, Dissolved (mg/I as Se)
26
26
<0.005
<0.005
0.0025
ND
<0.005
Silver, Dissolved (mg /I as Ag)
26
26
<0.001
<0.001
0.0005
ND
<0.001
Sodium, Total (mg/I as Na)
26
0
19.9
8.55
11.86
2.69
10.8
Specific Conductance,Field (umhos /cm @ 25C)
32
0
720
56.4
422
111
419
Sulfate, Total (mg/I as 504)
26
9
36
<10
15
9
15.2
Temperature, Water (Degrees Centigrade)
32
0
10.4
3
6.3
2.1
6.2
Total Dissolved Solids, mg/I
25
0
348
188
247
32
245
Total Suspend Solids, mg/I
26
2
1020
<10
170
224
113
Water Level,Distance From Measuring Point (Feet)
44
0
185.9
79.43
169.2
16.2
173.815
Weak Acid Dissociable Cyanide, mg /I
26
26
<0.01
<0.01
0.01
ND
<0.01
Zinc, Dissolved (mg/I as Zn)
26
25
0.051
<0.05
0.03
0.01
<0.05
TABLE 6 -22
SAMPLE LOCATION: WL -1A
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
Dissolved arsenic was analyzed from 2007 Total recoverable arsenic was analyzed through 2008 Both forms nre provided to indicate the entire analytical history