2009-08-10_GENERAL DOCUMENTS - M1977300 ‎(2)‎

• Permit No: M1977300
• IBM Index Class Name: GENERAL DOCUMENTS
• Doc Date: 8/10/2009
• Doc Name: EPP- pgs. 9-30 to 11-10
• From: Whetstone Associates/Cotter Corp.
• To: DRMS
• Permit Index Doc Type: Gen. Correspondence
• Email Name: DB2
• Media Type: D
• Archive: No

TABLE 11-7. WATER QUALITY IN RALSTON CREEK
1998 - Jan 2009
STATION SW-UP
11
is
SW-UP SW-UP SW-UP SW-UP SW-UP SW-UP SW-UP SW-UP SW-UP SW-UP SW-UP MIN MAX MEAN MEDIAN COUNT ND % ND
11/24/98 10/21/98 12/21/98 1/19/99 2/16/99 3/16/99 4/20/99 5118/99 6/14/99 7/21/99 9/14/99
pH (std units) 8.0 7.8 7.5 7.4 7.7 7.7 7.7 7.1 7.4 7.8 7.1 8 7.6 7.7 10 0 0%
Conductivity (umhos) 500 206 204 185 221 184 193 114 141 194 114 500 214 194 10 0 0%
Total dissolved solids 400 127 138 80 131 135 133 101 115 131 80 400 149 131 10 0 0%
Total suspended solids <1. 2 3 <1. 2 1 43 3 <10. 11.7 <1. 43 7.2 2.5 10 3 30%
Hardness, total 81 84 82 73 73 84 80.0 81.5 4 0 0%
Carbonate 0 0
Bicarbonate 0 0
Alkalinity, Dissolved 55 39 51 74 39 74 55 53 4 0 0%
Alkalinity, total 96 76 62 76 97 170 55 39 39 170 84 76 8 0 0%
Nitrate Nitrogen <0.1 <0.1 <0.1 <0.1 <0.1 <0.1 <0.1 <0.1 <0.5 <0.5 <0.1 <0.5 0.09 0.05 10 10 100%
Ammonia, total 0 0 0 0 0 0 0 <1. <1. <1. 0 1 0.2 0 10 3 30%
Calcium 23 24 23 20 23 13.9 23 24.3 13.9 24.3 21.8 23 8 0 0%
Sodium, dissolved 8 10 9 8 <5. 9.6 9.2 8.4 <5. 10 8.1 8.7 8 1 13%
Magnesium, dissolved 5.8 6.2 5.8 5.4 2.5 4.5 6 6.4 2.5 6.4 5.3 5.8 8 0 0%
Potassium, dissolved 1.3 1.7 1.4 1.3 0.7 1.1 1.5 1.4 0.7 1.7 1.30 1.35 8 0 0%
Sulfate 14 28 21 15 21 15 17 8.2 7.4 9.1 7.4 28 16 15 10 0 0%
Fluoride, total 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 5 0 0%
Chloride 11 14 12 11 13 13 14 10 11 13 10 14 12.2 12.5 10 0 0%
Phosphorous 0 0
Aluminum, dissolved <0.5 <0.5 <0.5 <0.5 <0.1 <0.1 <0.5 0.21 0.25 5 5 100%
Aluminum, total 0 0
Antimony, dissolved -0.008 <0.03 <0.003 <0.003 <0.003 <0.006 <0.006 <0.006 <0.003 <0.03 0.004063 0.003 8 8 100%
Antimony, total 0 0
Arsenic, dissolved <0.003 <0.05 <0.005 <0.005 <0.005 <0.003 <0.05 0.00680 0.0025 5 5 100%
Arsenic, total <0.003 <0.003 <0.003 <0.003 <0.003 0.0015 0.0015 3 3 100%
Barium, dissolved 0.04 0.03 <0.1 <0.1 <0.1 0.03 <0.1 0.044 0.05 5 3 60%
Barium, total 0.04 0.03 0.03 0.03 0.04 0.033333 0.03 3 0 0%
Beryllium, dissolved <0.002 <0.001 <0.002 <0.002 <0.002 <0.001 <0.001 <0.001 <0.001 <0.002 0.00075 0.00075 8 8 100%
Boron, total <0.05 <0.05 <0.05 <0.05 <0.05 0.025 0.025 3 3 100%
Cadmium, dissolved <0.0002 <0.002 <0.0002 <0.001 <0.001 <0.001 <0.0002 <0.002 0.00045 0.0005 6 6 100%
Chromium, dissolved <0.005 <0.005 <0.005 <0.005 <0.005 <0.005 <0.005 <0.005 0.0025 0.0025 6 6 100%
Chromium, total 0 0
Cyanide, total <0.01 <0.01 <0.01 0.0050 0.005 1 1 100%
Copper 0 0
Copper, dissolved <0.02 <0.02 <0.02 <0.02 <0.005 <0.005 <0.005 <0.005 <0.02 0.007 0.01 7 7 100%
Copper, total 0 0
Iron, dissolved <0.03 0.06 <0.03 <0.03 <0.1 0.1 <0.03 0.1 0.043 0.0325 6 4 67%
Iron, total 0 0
Iron, suspended 0 0
Iron, Ferrous (Fe2+) 0 0
Iron, Ferric Fe3+ 0 0
Lead, dissolved <0.002 <0.05 <0.005 <0.005 <0.005 <0.002 <0.05 0.0067 0.0025 5 5 100%
Lead, total <0.002 <0.002 <0.002 <0.002 <0.002 0.00 0.001 3 3 100%
Manganese, dissolved <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 0.005 0.005 5 5 100%
Manganese, total 0 0
Mercury, dissolved <0.0002 <0.0002 0.0003 <0.0002 <0.0002 <0.0002 0.0003 0.0 0.0001 5 4 80%
Mercury, total 0 0
Molybdenum, dissolved <0.01 <0.005 <0.01 <0.01 <0.01 0.017 <0.005 <0.005 <0.005 0.017 0.01 0.005 8 7 88%
Nickel, dissolved <0.04 <0.02 <0.04 <0.04 <0.04 <0.01 <0.01 <0.01 <0.01 <0.04 0.01 0.015 8 8 100%
Selenium, dissolved <0.005 <0.05 <0.005 -0.005 <0.005 <0.01 <0.01 <0.01 <0.005 <0.05 0.00625 0.00375 8 8 100%
Silver, dissolved <0.001 <0.005 0.0004 <0.0002 <0.0002 <0.01 <0.0002 <0.01 0.0014 0.00045 6 5 83%
Silver, total 0 0
Thallium, dissolved <0.001 <0.05 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.05 0.004 0.0005 8 8 100%
Vanadium, dissolved <0.01 <0.005 <0.01 <0.01 <0.01 <0.01 <0.005 <0.01 0.005 0.005 6 6 100%
Thallium, total 0 0
Zinc, dissolved <0.005 0.006 <0.005 <0.005 <0.01 <0.01 <0.01 <0.005 <0.01 0.004071 0.005 7 6 86%
Zinc, total 0 0
Uranium, dissolved 0.0028 0.0024 0.0036 0.002 0.0024 0.0022 0.0013 0.0014 0.0011 0.0028 0.0011 0.0036 0.0022 0.0023 10 0 0%
Uranium, suspended 0 0
Uranium, total 0 0
Thorium-228, dis. ( Ci/L 0 0.1 0 0.1 0.050 0.05 2 1 50%
Thorium-230, dis. (pCi/L) 0 0.1 0 0.1 0.05 0.05 2 1 50%
Thorium-232, dis. (pCi/L) 0 0 0 0 0.0000 0 2 2 100%
Radium-226, dis. (pCi/L) 0.2 0.2 0.4 0 0 0 0.4 0.1600 0.2 5 2 40%
Radium-226, sus Ci/L 0 0
Radium-226, total (pCi/L) 0 0
Gross Alpha, dis. (pCVL) 2.9 1.8 4.7 1.4 0.9 0.9 4.7 2.34 1.8 5 0 0%
Gross Beta dis. Ci/L 0.9 1.2 0.8 <5. <5. 0.8 <5. 1.58 1.2 5 2 40
NOTES: Mean and median statistic calculated using one-half detection limit (1/2 D.L.)
ND = number of non-detects No, %No = number and percent of non detects
Results are in mg/L unless otherwise noted
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