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-OS
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SW-OS SW-OS SW-OS SW-0S SW-OS SW-OS SW-OS SW-OS SW-OS SW-OS SW-OS SW-OS MIN MAX MEAN MEDIAN COUNT ND %ND
10/20/98 11/24/98 12/16/98 1/18/99 2/16/99 4120/99 5/17/99 5118/99 6/14/99 6/15/99 7/21/99 9/14/99
pH (std units) 8 8.1 7.5 7.3 8.3 7.8 7.1 7.2 7.5 7.4 8 7.1 8.3 7.7 7.5 11 0 0%
Conductivity (umhos) 481 217 502 360 612 281 138 143 186 154 408 138 612 317 281 11 0 0%
Total dissolved solids 300 134 346 219 401 178 120 116 139 117 270 116 401 213 178 11 0 0%
Total suspended solids 4 1 <1. <1. 0. 232 4 4 10.7 10.3 24.5 0. 232 26.5 4 11 3 27%
Hardness, total 150 180 150 120 120 180 150 150 4 0 0%
Carbonate 0 0
Bicarbonate 0 0
Alkalinity, Dissolved 64 42 43 60 100 100 <42. <100. 68.17 62 6 0 0%
Alkalinity, total 110 120 110 84 120 64 42 43 <42. <120. 86.6 97 8 0 0%
Nitrate Nitrogen 0.4 2.5 1.7 0.8 1.7 0.5 <0.1 <0.1 <0.5 <0.5 <0.1 2.5 0.8 0.45 10 4 40%
Ammonia, total 0 0 0 0 0 0 <1.
<1.
<1. <1.
<1.
0
1
0.227
0
11
11
100%
Calcium 35 40 34 28 41 14.1 14.5 32.2 34.5 14.1 <41. 30.4 34 9 0 0%
Sodium, dissolved 44 54 44 28 45 9.1 9.3 34.2 33.7 9.1 54 33.5 34.2 9 0 0%
Magnesium, dissolved 15 20 16 11 15 4.4 4.5 13.6 15.1 4.4 20 12.7 15 9 0 0%
Potassium, dissolved 2.8 2.9 2.5 2 3 1.2 1.1 2.7 2.3 1.1 3 2 2.5 9 0 0%
Sulfate 110 170 130 77 160 55 17 18 21 6.2 85 6.2 170 77 77 11 0 0%
Fluoride, total 0.6 0.6 0.6 0.5 0.7 0.5 0.7 0.6 0.6 5 0 0%
Chloride 19 13 14 13 18 12 10 10 12 12 14 10 19 13.4 13 11 0 0%
Phosphorous 0 0
Aluminum, dissolved <0.5 <0.5 <0.5 <0.5 0.3 0.3 0.3 <0.5 0.267 0.25 6 4 67%
Aluminum, total 0 0
Antimony, dissolved <0.03 <0.008 0.005 <0.003 <0.003 <0.006 <0.006 <0.006 <0.006 <0.003 <0.03 0.0043 0.003 9 8 89%
Antimony, total 0 0
Arsenic, dissolved <0.05 <0.003 <0.005 <0.005 <0.005 <0.005 <0.003 <0.05 0.006 0.0025 6 6 100%
Arsenic, total <0.003 <0.003 <0.003 <0.003 <0.003 0.0015 0.0015 3 3 100%
Barium, dissolved 0.04 0.04 <0.1 <0.1 <0.1 <0.1 0.04 <0.1 0.047 0.05 6 4 67%
Barium, total 0.03 0.03 0.03 <0.03 <0.03 0.03 0.03 3 0 0%
Beryllium, dissolved <0.001 <0.002 <0.002 <0.002 <0.002 <0.001 <0.001 <0.001 <0.001 <0.001 <0.002 0.0007 0.0005 9 9 100%
Boron, total <0.05 <0.05 0.06 0.06 <0.05 0.06 0.0425 0.0425 4 2 50%
Cadmium, dissolved <0.002 <0.0002 <0.0002 <0.0002 <0.001 <0.001 <0.001 <0.0002 <0.002 0.000 0.0005 7 7 100%
Chromium, dissolved <0.005 <0.005 <0.005 <0.005 <0.005 <0.005 <0.005 <0.005 <0.005 0.003 0.0025 7 7 100%
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 <0.005 <0.02 0.01 0.00625 8 8 100%
Copper, total 0 0
Iron, dissolved 0.04 <0.03 <0.03 <0.03 0.2 0.2 <0.1 <0.03 0.2 0.076 0.04 7 4 57%
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 <0.005 <0.002 <0.05 0.006 0.0025 6 6 100%
Lead, total <0.002 <0.002 <0.002 <0.002 <0.002 0.0010 0.001 3 3 100 %
Manganese, dissolved <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 0.005 0.005 6 6 100%
Manganese, total 0 0
Mercury, dissolved <0.0002 <0.0002 <0.0002 <0.0002 <0.0002 <0.0002 <0.0002 0.0001 0.0001 5 5 100%
Mercury, total 0 0
Molybdenum, dissolved 0.201 0.35 0.21 0.12 0.33 0.013 0.015 0.104 0.121 0.013 0.35 0.163 0.121 9 0 0%
Nickel, dissolved
<0.02
<0.04
<0.04
<0.04
<0.04
<0.01
<0.01
<0.01
<0.01
<0.01
<0.04
0.012
0.01
9
9
100%
Selenium, dissolved <0.05 <0.005 <0.005 <0.005 <0.005 <0.01 <0.01 <0.01 <0.01 <0.005 <0.05 0.0061 0.005 9 9 100%
Silver, dissolved
<0.005
<0.001
<0.0002
<0.0002
<0.0002
<0.01
<0.01
<0.0002
<0.01
0.0019
0.0005
7
7
100%
Silver, total 0 0
Thallium, dissolved <0.05 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.05 0.0032 0.0005 9 9 100%
Vanadium, dissolved <0.005 <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 <0.005 <0.01 0.0046 0.005 7 7 100%
Thallium, total 0 0
Zinc, dissolved <0.005 <0.005 <0.005 <0.005 <0.01 <0.01 <0.01 <0.01 <0.005 <0.01 0.004 0.00375 8 8 100%
Zinc, total 0 0
Uranium, dissolved 0.0046 0.0049 0.0052 0.0036 0.0053 0.0052 0.0014 0.0015 0.0021 0.0019 0.003 0.0014 0.0053 0.004 0.0036 11 0 0%
Uranium, suspended 0 0
Uranium, total 0 0
Thorium-228, dis. (pCi/L 0 0 0 0 0 0 0 3 0 0%
Thorium-230, dis. (pCi/L) 0.2 <0.1 0 0 0.2 0.083 0.05 3 1 33%
Thorium-232, dis. (pCi/L) 0.1 0 0.1 0 01 0.067 0.1 3 0 0%
Radium-226, dis. (pCi/L) 0.3 0.4 0.9 0.2 0.2 0.1 0.3 <0.1 <0.9 0.343 0.3 7 0 0%
ium-226, sus . Ci/L 0 0
ium-226, total (pCi/L) 0 0
Alpha, dis. (pCi/L)
rGross 3.3 3.4 5.5 5.9 1.6 1.6 1.7 <1.6 5.9 3.3 3.3 7 0 0%
ss Bela, dis. Ci/L 2.2 1.9 0.9 1.9 <5. <5. <5. 0.9 <5. 2.1 2.2 7 3 43%
NOTES: Mean and median statistic calculated using one-nan aetecuon mmn tirz u.L.)
ND = number of non-detects ND, %ND = number and percent of non detects
Results are in mg/L unless otherwise noted
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