2008-04-15_REVISION - M1980244 ‎(295)‎

• Permit No: M1980244
• IBM Index Class Name: REVISION
• Doc Date: 4/15/2008
• Doc Name: VOL II Appendix 2, Attachment C- Grassy Valley Hydrologic Monitoring DFata Summaries
• From: CC&V
• To: DRMS
• Type & Sequence: AM9
• Media Type: D
• Archive: No

Table C3 GV-03 Water chemistry summary statistics
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A
Station Identification: GV03
Location: Grassy Valley
Station type: Surface Water
Period of record start: March 28, 1997
Period of record end: November 8, 2007

Laboratory Parameters
Units
Number of analyses Number of
non-detected values Maxiumum
value Minimum
value
Average Standard
deviation
Field Parameters
Water Temperature C 34 0 23.2 0.4 12.8 6.6
Conductivity pmhos 34 0 2440 95 976 638
pH, Field su 34 0 8.1 4.3 6.8 1.0
Dissolved Oxygen mg/I 33 0 11.90 2.10 6.61 2.23
General Parameters
Total Dissolved Solids mg/1 34 0 2373 116 703 488
Acidity mg/1 31 25 34 <10 9 8
Alkalinity as CaC03 mg/1 11 8 38 <0 8 10
Ammonia mg/I 34 30 0.21 <0.05 0.04 0.05
Hardness mg/I 33 0 1433 60 394 271
Total Suspended Solids mg/1 34 26 42 <10 9 8
Special Parameters
Cyanide, Free mg/1 34 34 <0.01 <0.01 <0.01 ID
WAD Cyanide mg/1 34 34 <0.01 <0.01 <0.01 ID
Major Anions
Bicarbonate ion (as CaC03) mg/1 27 3 400 <10 111 103
Carbonate ion (as CaC03) mg/I 27 26 5 <0 5 l
Chloride, Total mg/I 34 8 11.00 <0.5 4.09 3.07
Fluoride, Total mg/I 34 0 12.10 1.05 4.71 2.51
Nitrate, Total mg/1 34 33 0.08 <0.05 0.03 0.01
Sulfate, Total mg/1 34 0 1551.00 31.80 421.82 354.13
Major Cations
Calcium, Total mg/I 34 0 434 15.7 102.0 76.0
Magnesium, Total mg/I 34 0 84.8 5.08 33.3 20.5
Potassium, Total mg/1 31 0 12.5 0.96 5.12 3.26
Sodium, Total mg/1 31 0 160 5.17 50.37 35.16
Trace Metals
Arsenic, Total recoverable mg/1 34 34 <0.005 <0.005 <0.005 ID
Cadmium, Dissolved mg/I 34 27 0.012 <0.001 0.001 0.003
Chromium, Total recoverable mg/I 7 7 <0.001 <0.001 <0.001 ID
Copper, Dissolved mg/I 34 30 0.007 <0.005 0.003 0.001
Iron, Dissolved mg/1 34 10 1.04 <0.05 0.14 0.20
Iron, Total recoverable mg/I 34 0 2.33 0.06 0.51 0.53
Lead, Dissolved mg/I 34 33 0.0020 <0.001 0.0005 0.0003
Manganese, Dissolved mg/I 33 0 41.90 0.21 10.00 12.44
Mercury, Total mg/1 34 34 <0.0002 <0.0002 <0.0002 ID
Nickel, Dissolved mg/I 34 17 0.26 <0.005 0.03 0.06
Selenium, Dissolved mg/I 34 34 <0.005 <0.005 <0.005 ID
Silver, Dissolved mg/I 34 33 0.001 <0.001 0.001 0.0001
Zinc, Dissolved mg/1 34 21 5.19 <0.05 0.49 1.10
NA: Not analyzed
/D: Insufficient data
Nondetects set to '/: detection limit for calculations
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