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 A7. CRMW-3A Water chemistry summary statistics
•
Station Identification:
Location:
Station type:
Period of Record Start:
Period of Record End:
CRMW-3A
Arequa Gulch
Groundwater
December 7, 1993
January 22, 2008
0 Chloride mg/l 102 0 175.00 8.00 51.27 39.43
Parameters Units Number of analytes Number of nondetected
values Maximum
value Minimum
value Average Standard
deviation
Field Parameters
Water Level ft bgl 104 0 35.00 10.30 22.34 6.39
Water Temp, C C 108 0 14.8 3.9 8.7 2.6
Conductivity µmhos 105 0 2510.00 777.00 1543.56 370.68
pH su 107 0 6.9 5.9 6.2 0.2
Dissolved Oxygen mg/l 84 1 14.82 <0 2.70 2.59
General Parameters
Total Dissolved Solids mg/1 101 0 1900 700 1277 253
Acidity mg/l 101 24 90.0 <0 20.6 15.7
Alkalinity as CaCO3 mg/l 58 0 100 26 60 20
Ammonia mg/1 103 102 <0.5 <0.05 0.05 0.04
Hardness mg/l 102 0 1140 420 769 157
Total Suspended Solids mg/1 102 81 70
<5
7
9
Special Parameters
CN, Free mg/l 103 103 <0.05 <0.01 0.01 ID
WAD CN mg/l 103 71 0.09 <0.005 0.01 0.01
Major Anions
Bicarbonate ion (as CaCO3) mg/1 78 0 120 20 58 22
Carbonate ion (as CaCO3) mg/1 69 67 10 <5 4 1

Fluoride mg/l 103 0 12.20 3.07 5.93 2.03
Nitrate mg/l 103 0 24.10 0.23 9.35 5.30
Sulfate mg/l 103 0 1100.00 424.00 739.98 164.16
Major Cations
Calcium mg/l 100 0 330.00 135.00 233.91 47.15
Magnesium mg/l 100 0 76.60 21.00 43.83 10.25
Potassium mg/1 100 0 21.00 5.23 11.20 3.75
Sodium mg/1 100 0 95.20 21.00 59.19 19.25
Trace Metals
Arsenic, (dissolved) mg/1 45 45 <0.005 <0.005 0.003 ID
Cadmium, (dissolved) mg/l 103 77 <0.01 <0.0001 0.001 0.001
Chromium, (dissolved) mg/1 103 85 0.013 <0.001 0.002 0.002
Copper, (dissolved) mg/l 102 81 0.010 <0.005 0.003 0.002
Iron, (dissolved) mg/1 102 70 <0.5 <0.01 0.03 0.03
Lead, (dissolved) mg/1 103 101 <0.005 <0.001 0.0011 0.0009
Manganese, (dissolved) mg/1 104 22 2.06 <0.01 0.36 0.43
Mercury, (dissolved) mg/1 20 20 <0.0001 <0.0001 0.0001 ID
Nickel, (dissolved) mg/1 103 50 <0.05 <0.005 0.01 0.01
Selenium, (dissolved) mg/l 101 98 <0.05 <0.005 0.0043 0.0055
Silver, (dissolved) mg/l 103 103 <0.005 <0.0001 0.0005 ID
Zinc, (dissolved) mg/1 104 24 0.31 0.01 0.08 0.06
NA: Not analyzed
ID: Insufficient data
Nondetects set to % detection limit for calculations
0