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 A8 CRMW-3B Water chemistry summary statistics
Station Identification: CRMW-3B
Location: Arequa Gulch
Station type: Groundwater
Period of Record Start: December 7, 1993
Period of Record End: January 22, 2008
•

Parameters
Units
Number of analytes Number of
nondetected values Maximum
value Minimum
value Average Standard
deviation
Field Parameters
Water Level ft bgl 104 0 31.68 3.60 22.72 7.91
Water Temp, C C 103 0 55.3 5.4 9.1 4.8
Conductivity µmhos 102 0 2210.00 1040.00 1536.79 257.82
pH su 103 0 7.1 6.1 6.8 0.2
Dissolved Oxygen mg/1 79 1 3.80 <0 0.37 0.62
General Parameters
Total Dissolved Solids mg/1 102 0 1690 800 1268 153
Acidity mg/1 102 30 46.0 <1 12.2 9.1
Alkalinity as CaCO3 mg/1 57 0 142 65 113 19
Ammonia mg/1 103 102 0.20 <0.05 0.05 0.04
Hardness mg/l 103 0 1070 520 790 94
Total Suspended Solids mg/l 103 86 170 <5 7 16
Special Parameters
CN, Free mg/l 104 104 <0.05 <0.01 0.01 ID
WAD CN mg/1 104 80 0.02 <0.005 0.01 0.002
Major Anions
Bicarbonate ion (as CaCO3) mg/1 79 0 170 79 129 18
Carbonate ion (as CaCO3) trig/1 68 68 <10 <0 4 ID
Chloride mg/1 103 1 155.00 <3 43.12 33.49
Fluoride mg/l 104 0 9.90 3.10 4.30 0.95
Nitrate mg/1 103 12 9.65 <0.05 2.87 2.10
Sulfate mg/1 104 0 950.00 200.00 726.38 101.15
Major Cations
Calcium mg/1 100 0 330.00 177.00 250.05 30.92
Magnesium mg/1 100 0 59.00 1.36 39.61 7.61
Potassium mg/l 100 0 18.00 7.28 10.87 1.76
Sodium mg/l 100 0 79.10 6.10 51.50 13.19
Trace Metals
Arsenic, (dissolved) mg/1 45 44 0.005 <0.005 0.003 0.0004
Cadmium, (dissolved) mg/l 104 75 <0.01 <0.0001 0.001 0.001
Chromium, (dissolved) mg/1 103 90 0.010 <0.001 0.001 0.002
Copper, (dissolved) mg/1 104 98 <0.05 <0.005 0.003 0.002
Iron, (dissolved) mg/l 104 80 1.40 <0.01 0.17 0.37
Lead, (dissolved) mg/1 103 100 <0.005 <0.001 0.0011 0.0009
Manganese, (dissolved) m9/1 105 0 10.40 0.07 4.78 1.46
Mercury, (dissolved) m9/1 19 19 <0.0001 <0.0001 0.0001 ID
Nickel, (dissolved) mg/1 104 50 <0.05 <0.002 0.01 0.01
Selenium, (dissolved) mg/1 101 98 <0.05 <0.005 0.0048 0.0062
Silver, (dissolved) mg/1 104 104 <0.005 <0.0 )01 0.0005 ID
Zinc, (dissolved) mg/l 105 24 0.10 <0.05 0.05 0.02
NA: Not analyzed
ID: Insufficient data
Nondetects set to %z detection limit for calculations
0