2008-09-17_REVISION - M1980244 ‎(34)‎

• Permit No: M1980244
• IBM Index Class Name: REVISION
• Doc Date: 9/17/2008
• Doc Name: Table C16,GVMW-8A and Table C17, GVMW-8B; Water Chemistry Summarry Statistics
• From: CC&V
• To: DRMS
• Type & Sequence: AM9
• Media Type: D
• Archive: No

Table C17 GVMW-BB Water chemistry summary statistics
0
Il
u
Station Identification: GVMW 8B
Location: Grassy Valley
Station type: Groundwater
Period of record start: June 12, 1998
Period of record end: October 26, 2007

Laboratory Parameters
Units
Number of analyses Number of
non-detected values Maxiumum
value Minimum
value
Average Standard
deviation
Field Parameters
Depth to Water ft 50 0 43.81 10.05 29.48 8.83
Water Temperature C 48 0 15.6 6.7 9.2 1.9
Conductivity µmhos 49 0 543 197 317 60
pH su 49 0 8.8 6.4 6.9 0.5
Dissolved Oxygen mg/1 47 0 9.50 3.20 6.77 1.33
General Parameters
Total Dissolved Solids mg/1 40 0 368 176 227 45
Acidity mgtl 37 32 12.0 <10 5.7 1.9
Alkalinity as CaC03 mg/l 25 0 50 31 43 5
Ammonia mg/l 41 39 0.06 <0.05 0.03 0.01
Hardness mg/l 41 0 167 84 106 16
Total Suspended Solids mg/1 41 24 191 <10 17 31
Special Parameters
Cyanide, Free m I 41 41 <0.01 <0.01 <O.OI ID
WAD Cyanide mg/1 41 41 <0.01 <0.01 <0.01 ID
Major Anions
Bicarbonate ion as CaC03) mg/I 17 0 73 52 62 5
Carbonate ion (as CaC03) mg/l 17 16 5 <0 5 1
Chloride, Total mg/l 41 0 13.80 2.00 4.40 1.99
Fluoride, Total mg/l 41 0 3.38 0.87 2.27 0.59
Nitrate, Total m 41 0 2.07 0.64 1.42 0.39
Sulfate, Total mg/1 41 0 180.00 53.10 87.26 24.90
Major Cations
Calcium, Total mg/1 41 0 50.80 26.50 33.08 4.99
Magnesium, Total mg/1 41 0 9.75 2.51 5.51 1.18
Potassium, Total mg/l 37 0 2.45 0.72 1.35 0.38
Sodium, Total mg/l 37 0 33.10 14.90 22.12 3.53
Trace Metals
Arsenic, Total recoverable mg/l 18 18 <0.005 <0.005 <0.005 ID
Cadmium, Dissolved mg/l 41 41 <0.001 <0.001 <0.001 ID
Chromium, Total recoverable mg/1 0 0 NA NA NA NA
Copper, Dissolved M911 41 39 0.008 <0.005 0.003 0.001
Iron, Dissolved mg/1 41 38 0.08 <0.05 0.03 0.01
Iron, Total recoverable mg/1 18 3 2.48 <0.05 0.60 0.68
Lead, Dissolved mg/l 41 41 <0.001 <0.001 <0.001 ID
Manganese, Dissolved. mg/l 41 31 0.14 <0.01 0.03 0.03
Mercury, Total mg/1 41. 41 <0.0002 <0.0002 <0.0002 ID
Nickel, Dissolved mg/l 41 39 0.01 <0.005 0.003 0.001
Selenium, Dissolved m 41 41 <0.005 <0.005 <0.005 ID
Silver, Dissolved mg/l 41 41 <0.001 <0.001 <0.00 I ID
Zinc, Dissolved mg/I 41 41 <0.05 <0.05 <0.05 ID
NA: Nat analyzed
1D: Insufficient data
Nondetects set to % detection limit for calculations
•