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 A29 GRMW-1A Water chemistry summary statistics
Station Identification:
Location:
Station type:
Period of Record Start
Period of Record End:
•
GRMW-IA
Gold Run
Groundwater
June 22, 1998
December 19, 2001
Parameters Units Number of analytes Number of
nondetected values Maximum
value Minimum
value Average Standard
deviation
Field Parameters
Water Level ft bgl 28 0 149.34 144.00 144.97 0.97
Water Temp, C C 26 0 15.9 5.9 9.6 2.8
Conductivity gmhos 26 0 2200.00 584.00 1556.88 341.72
pH su 26 0 7.5 6.3 6.9 0.3.
Dissolved Oxygen mg/l 25 0 10.50 1.50 5.62 1.99
General Parameters
Total Dissolved Solids mg/1 14 0 1599 1284 1427 66
Acidity mg/1 14 1 42.0 <10 25.4 8.2
Alkalinity as CaCO3 mg/l 0 0 NA NA NA NA
Ammonia mg/1 14 14 <0.05 <0.05 0.03 ID
Hardness mg/l 14 0 1930 842 1021 276
Total Suspended Solids mg/1 14 0 38526 19 2935 10246
Special Parameters
CN, Free mg/l 15 15 <0.01 <0.01 0.01 ID
WAD CN mg/1 15 15 <0.01 <0.01 0.01 ID
Major Anions
Bicarbonate ion (as CaCO3) mg/1 14 0 417 349 385 19
Carbonate ion (as CaCO3) mg/1 14 13 10 <0 5 2
Chloride mg/l 14 0 10.00 3.50 4.79 1.73
Fluoride mg/1 14 0 3.48 1.83 2.72 0.36
Nitrate mg/l 14 13 0.11 <0.05 0.03 0.02
Sulfate mg/l 14 0 892.00 654.00 707.29 _ 67.26
Major Cations
Calcium mg/l 14 0 661.00 310.00 373.93 88.66
Magnesium mg/I 14 0 67.90 16.30 21.26 13.67
Potassium mg/1 14 0 77.20 4.85 11.98 18.91
Sodium mg/1 14 0 72.30 45.00 52.92 6.56
Trace Metals
Arsenic, (dissolved) mg/l 0 0 NA NA NA NA
Cadmium, (dissolved) mg/1 14 12 0.001 <0.001 0.001 0.0002
Chromium, (dissolved) mg/1 14 11 0.027 <0.001 0.003 0.007
Copper, (dissolved) mg/l 14 10 0.009 <0.005 0.004 0.003
Iron, (dissolved) mg/1 14 10 7.61 <0.05 0.63 2.02
Lead, (dissolved) mg/l 14 13 0.0150 <0.001 0.0015 0.0039
Manganese, (dissolved) mg/1 13 4 1.59 <0.05 0.29 0.46
Mercury, (dissolved) mg/1 0 0 NA NA NA NA
Nickel, (dissolved) mg/1 14 8 0.03 <0.005 0.01 0.01
Selenium, (dissolved) mg/1 14 11 0.0070 <0.005 0.0035 0.0019
Silver, (dissolved) mg/l 14 14 <0.005 <0.001 0.001 ID
Zinc, (dissolved) mg/l 14 6 0.11 <0.05 0.05 0.03
NA: Not analyzed
ID: Insufficient data
Nondetects set to % detection limit for calculations
0