2008-04-15_REVISION - M1980244 ‎(318)‎

• Permit No: M1980244
• IBM Index Class Name: REVISION
• Doc Date: 4/15/2008
• Doc Name: VOL II Appendix 2, Attachment A- Main Project Area Hydrologi Monitoring Data Summaries
• From: CC&V
• To: DRMS
• Type & Sequence: AM9
• Media Type: D
• Archive: No

Table A31 GRMW-3A Water chemistry summary statistics
•
Station Identification:
Location:
Station type:
Period of Record Start:
Period of Record End:
GRMW-3A
Gold Run
Groundwater
June 8, 1998
May 31, 2001
•
11

Parameters
Units Number of
analytes Number of
nondetected values Maximum
value Minimum
value
Average Standard
deviation
Field Parameters
Water Level ft bgl 18 0 158.78 139.21 148.12 5.75
Water Temp, C C 18 0 15.6 7.8 10.1 1.9
Conductivity µmhos 18 0 795.00 463.00 679.33 93.42
pH su 18 0 7.7 7.0 7.4 0.2
Dissolved Oxygen mg/l 17 0 4.50 0.10 1.22 1.34
General Parameters
Total Dissolved Solids mg/l 14 0 674 439 499 56
Acidity mg/l 16 15 10.0 <10 5.3 1.3
Alkalinity as CaCO3 mg/l 0 0 NA NA NA NA
Ammonia mg/l 16 16 <0.05 <0.05 0.03 ID
Hardness mg/1 16 0 362 286 323 26
Total Suspended Solids mg/l 16 2 686 <10 107 182
Special Parameters
CN, Free mg/l 17 17 <0.01 <0.01 0.01 ID
WAD CN mg/l 17 17 <0.01 <0.01 0.01 ID
Major Anions
Bicarbonate ion (as CaCO3) mg/l 16 0 215 201 208 4
Carbonate ion (as CaCO3) mg/l 16 16 <10 <0 5 ID
Chloride mg/l 16 0 4.00 1.50 2.31 0.63
Fluoride mg/l 16 0 4.60 4.03 4.35 0.18
Nitrate mg/l 16 16 <0.05 <0.05 0.03 ID
Sulfate mg/l 16 0 215.00 151.00 183.69 16.95
Major Cations
Calcium mg/l 16 0 132.00 96.50 112.54 10.83
Magnesium mg/l 16 0 11.70 9.51 10.56 0.71
Potassium mg/l 16 0 5.53 2.74 3.62 0.89
Sodium mg/l 16 0 28.80 21.00 23.34 2.04
Trace Metals
Arsenic, (dissolved) mg/1 0 0 NA NA NA NA
Cadmium, (dissolved) mg/l 16 15 0.003 <0.001 0.001 0.001
Chromium, (dissolved) mg/l 16 12 0.002 <0.001 0.001 0.001
Copper, (dissolved) mg/l 16 16 <0.005 <0.005 0.003 ID
Iron, (dissolved) mg/l 16 8 0.34 <0.05 0.09 0.09
Lead, (dissolved) mg/l 16 16 <0.001 <0.001 0.0005 ID
Manganese, (dissolved) mg/l 16 0 0.76 0.11 0.57 0.18
Mercury, (dissolved) mg/l 0 0 NA NA NA NA
Nickel, (dissolved) mg/l 16 15 0.01 <0.005 0.003 0.001
Selenium, (dissolved) mg/l 16 16 <0.005 <0.005 0.0025 ID
Silver, (dissolved) mg/I 16 16 <0.001 <0.001 0.001 ID
Zinc, (dissolved) mg/l 16 16 <0.05 <0.05 0.03 ID
NA: Not analyzed
ID: Insufficient data
Nondetects set to %z detection limit for calculations