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 A5 AG-1.5 Water chemistry summary statistics
Station Identification:
Location
Station Type:
Period of Record Start:
Period of Record End:
•
AG-1.5
Arequa Gulch
Surface Water
November 15, 1996
March 14, 2008

Parameters
Units
Number of analytes Number of

nondetected values Maximum

value Minimum

value
Average Standard

deviation
Field Parameters
Flow gpm 1542 1001 700.00 <0 18.83 58.14
Water Temperature C 548 8 17.4 <0 7.3 4.0
Conductivity gmhos 211 0 2350.00 822.00 1397.32 277.49
PH su 547 0 7.1 5.2 6.0 0.4
Dissolved Oxygen mg/1 211 0 12.30 2.40 7.73 1.26
General Parameters
Total Dissolved Solids mg/1 62 0 1496 884 1246 140
Acidity mg/1 40 2 78.0 <10 25.9 15.5
Alkalinity as CaCO3 mg/l 40 19 41 <10 10 7
Ammonia mg/1. 121 116 0.22 <0.05 0.03 0.02
Hardness mg/1 120 1 946.00 <0 701.60 122.24
Total Suspended Solids mg/1 123 86 87.00 <5 8.97 9.42
Special Parameters
CN, Free mg/l 370 345 <0.05 <0.01 0.01 0.01
WAD CN mg/l 370 201 0.07 <0.005 0.01 0.01
Major Anions
Bicarbonate ion (as CaCO3) mg/1 40 19 50 <10 11 9
Carbonate ion (as CaCO3) mg/1 40 40 <10 <10 5 ID
Chloride mg/1 40 0 220.00 12.50 75.20 48.83
Fluoride mg/l 40 0 12.90 2.54 6.42 2.50
Nitrate mg/1 67 0 19.50 1.45 13.38 3.56
Sulfate mg/l 40 0 803.00 471.00 665.13 71.37
Major Cations
Calcium mg/1 112 0 292.00 125.00 208.94 35.08
Magnesium mg/I 112 0 64.30 28.20 44.23 7.15
Potassium mg/1 40 0 10.10 5.26 7.81 1.32
Sodium mg/1 40 0 94.70 26.80 63.55 14.64
Trace Metals
Arsenic, (total recoverable) 1119/1 40 39 0.025 <0.005 0.003 0.004
Cadmium, (dissolved) mg/1 46 9 0.010 <0.001 0.003 0.002
Chromium, (total recoverable) mg/l 1 1 <0.001 <0.001 0.001 ID
Copper, (dissolved) mg/l 44 17 0.055 <0.005 0.012 0.012
Iron, (dissolved) mg/1 1 1 <0.05 <0.05 0.03 ID
Iron, (total recoverable) mg/1 119 76 4.06 <0.01 0.10 0.38
Lead, (dissolved) mg/1 40 38 0.0020 <0.001 0.0006 0.0002
Manganese, (dissolved) mg/1 46 0 5.62 0.10 2.16 1.62
Mercury, (total) mg/l 41 40 <0.0002 0.0000 0.0001 0.0000
Nickel, (dissolved) mg/1 42 3 0.04 <0.005 0.02 0.01
Selenium, (dissolved) mg/l 40 34 0.0070 <0.005 0.0030 0.0013
Silver, (dissolved) mg/l 40 38 0.00 <0.001 0.001 0.0003
Zinc, (dissolved) mg/1 44 0 0.80 0.05 0.33 0.19
NA: Not analyzed
ID: Insufficient data
Nondetects set to '/z detection limit for calculations
C,
J