2008-09-17_REVISION - M1980244 ‎(15)‎

• Permit No: M1980244
• IBM Index Class Name: REVISION
• Doc Date: 9/17/2008
• Doc Name: GVMW-8A/8B Water Chemistry Summary Statistics
• From: CC&V
• To: DRMS
• Media Type: D
• Archive: No

Table C16 GVMW-8A Water chemistry summary statistics
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Station Identification: GVMW 8A
Location: Grassy Valley
Station type: Groundwater
Period of record start: June 12, 1998
Period of record end: October 26, 2007
SFp 7
Laboratory Parameters Units Number of analyses Number of '
non-detected values Ma:iumum
value Minimum
value Average Standard
deviation
Field Parameters
Depth to Water ft 50 0 162.77 81.04 108.33 18.44
Water Temperature C 49 0 9.7 7.2 8.0 0.6
Conductivity pmhos 49 0 441 190 306 46
PH su 49 0 11.8 6.6 7.3 1.1
Dissolved Oxygen mg/l 45 0 6.50 0.10 1.00 1.50
General Parameters
Total Dissolved Solids mg/I 43 0 245 172 201 12
Acidity mg/1 40 35 10.0 <0 5.5 1.9
Alkalinity as CaC03 mg/I 26 0 5,8 48 54 2
Ammonia mg/1 44 43 0.06 <0.05 0.03 0.01
Hardness mg/I 44 0 162 90 104 11
Total Suspended Solids mg/1 44 43 11 <10 5 1
Special Parameters
Cyanide, Free mg/1 44 44 <0.01 <0.01 <0.01 ID
WAD Cyanide mg/l 44 44 <0.01 <0.01 <0.01 ID
Major Anions
Bicarbonate ion (as CaC03) mg/l 19 1 81 <10 65 16
Carbonate ion (as CaC03) mg/1 19 17 13 <0 5 2
Chloride, Total mg/I 44 0 14.30 2.00 6.00 2.97
Fluoride, Total mg/l 44 0 3.33 2.01 2.72 0.23
Nitrate, Total mg/l 44 2 2.08 <0.05 0.36 0.39
Sulfate, Total mg/I 44 0 107.00 59.70 72.37 8.35
Major Cations
Calcium, Total mg11 44 0 41.40 28.70 34.24 2.93
Magnesium, Total mg/1 44 0 5.42. 1.13 4.26 0.60
Potassium, Total mg/I 40 0 3.09 0.56 0.86 0.43
Sodium, Total mg/1 40 0 24.00 17.90 19.76 1.29
Trace Metals
Arsenic, Total recoverable mg/I . 20 20 <0.005 <0.005 <0.005 ID
Cadmium, Dissolved mg/l 44 44 <0.00I <0.001 <0.001 ID
Chromium, Total recoverable mg/I 0 0 NA NA NA NA
Copper, Dissolved mg/1 44 43 0.006 <0.005 0.003 0.001
Iron, Dissolved mg/1 44 41 0.08 <0.05. 0.03 0.01
Iron, Total recoverable mg11 20 15 0.37 <0.05 0.06 0.09
Lead, Dissolved mg/l 44 43 0.0010 <0.001 0.0005 0.0001
Manganese, Dissolved mg/1 44 2 0.93 <0.05 0.60 0.19
Mercury, Total mg/l 44 44 <p,0002 <0.0002 <0.0002 ID
Nickel, Dissolved mg/l 44 44 <0.005 <0.005 <0.005 ID
Selenium, Dissolved mg/I 44 44 <0.005 <0.005 <0.005 ID
Silver, Dissolved mg/1 44 44 <0.001 <0.00I <0.00I ID
Zinc, Dissolved mg/1 44 44 <0.05 <0.05 <0.05 [D
NA: Not analyzed
ID: Insufficient data
Nondetects set to %, detection limit for calculations