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-UC
9
•
SW-UC SW-UC SW-UC SW-UC SW-UC SW-UC SW-UC SW-UC SW-UC SW-UC SW-UC MIN MAX MEAN MEDIAN COUNT ND %ND
10/21/98 11/24/98 12/16/98 1/18/99 2/16/99 3/16/99 4/20/99 5/17/99 6/15199 7/21/99 9/14/99
pH (std units) 7.7 8 7.3 7.2 7.9 7.6 7.5 7.3 7.3 7.5 7.2 8 7.53 7.5 10 0 0%
Conductivity(umhos) 206 598 185 192 212 185 164 115 143 195 115 598 219.5 188.5 10 0 0%
Total dissolved solids 130 388 153 119 120 137 113 101 108 131 101 388 150 125 10 0 0%
Total suspended solids 3 0. 2 4 1 0 56.4 4 <10. 14.2 0 56.4 9.01 3.5 10 3 30%
Hardness, total 66 81 76 76 76 86 79.8 78.5 4 0 0%
Carbonate 0 0
Bicarbonate 0 0
Alkalinity, Dissolved 48 40 62 82 40 82 58 55 4 0 0%
Alkalinity, total 80 83 67 78 84 68 48 40 40 84 68.5 73 8 0 0%
Nitrate Nitrogen <0.1 <0.1 <01 <0.1 <0.1 <0.1 <0.1 <0.1 <0.5 <0.5 <0.5 <0.1 <0.5 0.105 0.05 11 11 100%
Ammonia, total 0 0 0 0 0 0 0 0. <1. <1. 0 0. 0.2 0 10 10 100%
Calcium 25 23 21 21 23 12.9 23.1 24.8 12.9 25 21.7 23 8 0 0%
Sodium, dissolved 10 8 8 9 <5. 6.4 8.8 7.8 <5. 10 7.6 8 8 1 13%
Magnesium, dissolved 6.1 5.7 5.5 5.5 3.9 3.6 6.2 6.2 3.6 6.2 5.3 5.6 8 0 0%
Potassium, dissolved 1.7 1.4 1.3 1.4 0.7 1.1 1.5 2.7 0.7 2.7 1.48 14 8 0 0%
Sulfate 17 13 19 18 14 16 16 8.6 6.6 12 6.6 19 14 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 15 11 12 11 12 14 11 10 11 11 10 15 11.8 11 10 0 0%
Phosphorous 0 0
Aluminum, dissolved <0.5 <0.5 <0.5 <0.5 0.2 0.2 <0.5 0.24 0.25 5 4 80%
Aluminum, total 0 0
Antimony, dissolved <0.03 <0.008 <0.003 <0.003 <0.003 <D.006 <0.006 <0.006 <0.003 <0.03 0.0041 0.003 8 8 100%
Antimony, total 0 0
Arsenic, dissolved <0.05 <0.003 <D.005 <0.005 <0.005 <0.003 <0.05 0.0068 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 0.03 0.04 <0.1 <0.1 <0.1 0.03 <0.1 0.044 0.05 5 3 60%
Barium, total 0.03 0.04 0.04 0.03 0.04 0.037 0.04 3 0 0%
Beryllium, dissolved <0.001 <0.002 <0.002 <0.002 <0.002 <D.001 <0.001 <0.001 <0.001 <0.002 0.0008 0.0008 8 8 100%
Boron, total <0.05 <0.05 <0.05 <0.05 <0.05 0.025 0.025 3 3 100%
Cadmium, dissolved <0.002 <0.0002 <0.0002 <0.0002 <0.001 <0.001 <0.0002 <0.002 0.0004 0.0003 6 6 100%
Chromium, dissolved <0.005 <0.005 <0.005 <0.005 <0.005 <D.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 <D.005 <0.005 <0.005 <0.005 <0.02 0.007 0.01 7 7 100%
Copper, total 0 0
Iron, dissolved 0.06 0.04 <0.03 <0.03 0.2 <0.1 <0.03 0.2 0.063 0.045 6 3 509/6
Iron, total 0 0
Iron, suspended 0 0
Iron, Ferrous (Fe2+) 0 0
Iron, Ferric Fe3+ 0 0
Lead, dissolved <0.05 <0.002 <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 0.0005 <0.0002 <0.0002 <0.0002 <0.0002 0.0005 0.0 0.0001 5 4 80%
Mercury, total 0 0
Molybdenum, dissolved <0.005 <0.01 <0.01 -0.01 <0.01 <0.005 <0.005 <0.005 -0.005 <0.01 0.0038 0.0038 8 8 100%
Nickel, dissolved <0.02 <0.04 <0.04 <0.04 <0.04 <0.01 <0.01 <0.01 <0.01 <0.04 0.013 0.015 8 8 100%
Selenium, dissolved <0.05 <0.005 <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 <0.005 <0.001 <0.0002 <0.0002 <0.0002 <0.01 <0.0002 <0.01 0.0014 0.0003 6 6 100%
Silver, total 0 0
Thallium, dissolved <0.05 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 0.002 <0.001 <0.05 0.004 0.0005 8 7 881/6
Vanadium, dissolved <0.005 <0.01 <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 <0.005 <0.005 <0.005 <0.01 <0.01 <0.01 <0.005 <0.01 0.0039 0.005 7 6 86%
Zinc, total 0 0
Uranium, dissolved 0.0025 0.0031 0.002 0.0029 0.0024 0.002 0.0014 0.0011 0.0014 0.0026 0.0011 0.0031 0.0021 0.0022 10 0 0%
Uranium, suspended 0 0
Uranium, total 0 0
Thorium-228, dis. Ci/L 0 0.1 0 0.1 0.05 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 0.1 0 0.1 0.05 0.05 2 1 50%
Radium-226, dis. (pCUL) 0.2 0.2 0.3 0.2 0.2 0.2 0.3 0.22 0.2 5 0 0%
Radium-226, sus . Ci/L 0 0
Radium-226, total (pCi/L)
0
0
Gross Alpha, dis. (pCVL) 2 3.3 43 1.3 1.5 1.3 43 10.22 2 5 0 0
Gross Beta, dis. Ci/L 1.6 2.1 27 <5. <5. 1.6 27 7.14 2.5 5 2 40
NOTES: Mean and median statistic calculated using one-nan detectwn limn (Ire U.L.)
ND = number of non-detects ND, %No = number and percent of non detects
Results are in mg/L unless otherwise noted
0
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