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-GS
E
•
SW-GS SW-GS SW-GS SW-GS SW-GS SW-GS SW-GS SW-GS SW-GS MIN MAX MEAN MEDIAN COUNT NO % ND
10/20/98 11/23198 12/17/98 1/18/99 2/16/99 3/16/99 4/19/99 7121/99 9/13/99
pH (std units) 8 8.1 8 7.4 8.3 7.8 7.7 7.6 7.4 8.3 7.9 7.9 8 0 0%
Conductivity (umhos) 468 452 376 357 808 408 284 287 284 808 430 392 8 0 0%
Total dissolved solids 303 301 245 218 542 328 186 180 180 542 288 273 8 0 0%
Total suspended solids 4 5 1 3
<1.
1 43.4
<10.
<1.
43.4
7.9
3.5
8
2
25%
Hardness, total 150 140 120 110 110 150 130 130 4 0 0%
Carbonate 0 0
Bicarbonate 0 0
Alkalinity, Dissolved 70 87 70 87 78.5 78.5 2 0 0%
Alkalinity, total 120 120 140 84 130 82 70 70 140 107 120 7 0 0%
Nitrate Nitrogen 0.8 1.8 0.8 0.8 2.9 0.4 0.5 0.8 <0.5 0.4 2.9 1.0 0.8 9 1 11%
Ammonia, total 0 0 0 0 0 0 0 <1. 0 <1. 0.063 0 8 1 13%
Calcium 35 33 29 28 48 26.9 32 26.9 48 33.1 32 7 0 0%
Sodium, dissolved 44 38 29 28 69 19.3 27.8 19.3 69 36.4 29 7 0 0%
Magnesium, dissolved 15 15 11 11 20 9.5 12.5 9.5 20 13.4 12.5 7 0 0%
Potassium, dissolved 2.7 2.3 2 2 3.7 1.6 2.1 1.6 3.7 2.3 2.1 7 0 0%
Sulfate 120 110 79 79 240 89 54 41 41 240 102 84 8 0 0%
Fluoride, total 0.6 0.5 0.4 0.4 0.9 0.4 0.9 0.6 0.5 5 0 0%
Chloride 18 15 14 13 22 14 13 13 13 22 15.3 14 8 0 0%
Phosphorous 0 0
Aluminum, dissolved <0.5 <0.5 <0.5 0.5 <0.5 <0.5 0.3125 0.25 4 4 100%
Aluminum, total 0 0
Antimony, dissolved 0.03 <0.008 <0.003 <0.003 0.011 <0.006 <0.006 <0.003 <0.03 0.0077 0.003 7 6 86%
Antimony, total 0 0
Arsenic, dissolved 0.05 <0.003 <0.005 <0.005 <0.003 <0.05 0.0141 0.0025 4 4 100%
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 0.04 <0.1 0.045 0.045 4 2 50%
Barium, total 0.03 0.03 0.04 0.03 0.04 0.0333 0.03 3 0 0%
Beryllium, dissolved 0.001 <0.002 <0.002 <0.002 <0.002 <0.001 <0.001 <0.001 <0.002 0.0009 0.001 7 7 100%
Boron, total <0.05 0.05 <0.05 0.05 0.0375 0.0375 2 1 50%
Cadmium, dissolved 0.002 <0.0002 <0.0002 <0.0002 <0.001 <0.0002 <0.002 0.001 0.0001 5 5 100%
Chromium, dissolved 0.005 <0.005 <0.005 <0.005 <0.005 <0.005 <0.005 0.003 0.0025 5 5 100%
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 <0.02 0.01 0.01 6 6 100%
Copper, total 0 0
Iron, dissolved 0.04 <0.03 <0.03 0.03 <0.1 <0.03 <0.1 0.030 0.03 5 4 80%
Iran, 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 <0.002 <0.05 0.0140 0.0025 4 4 100%
Lead, total <0.002 <0.002 <0.002 <0.002 <0.002 0.001 0.001 3 3 100%
Manganese, dissolved <0.01 <0.01 <0.01 0.01 <0.01 <0.01 0.006 0.005 4 4 100%
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 0.195 0.22 0.13 0.11 0.51 0.043 0.08 0.043 0.51 0.184 0.13 7 0 0%
Nickel, dissolved 0.02 <0.04 <0.04 <0.04 <0.04 <0.01 <0.01 <0.01 <0.04 0.016 0.02 7 7 100%
Selenium, dissolved 0.05 <0.005
<0.005
<0.005
<0.005
<0.01
<0.01
<0.005
<0.05
0.0100
0.0025
7
7
100%
Silver, dissolved 0.005 <0.001 <0.0002 <0.0002 <0.0002 <0.0002 <0.005 0.0012 0.0001 5 5 100%
Silver, total 0 0
Thallium, dissolved 0.05 <0.001
<0.001
<0.001
<0.001
<0.001
<0.001
<0.001
<0.05
0.007571
0.0005
7
7
100%
Vanadium, dissolved 0.005 <0.01 <0.01 <0.01 <0.01 <0.005 <0.01 0.0050 0.005 5 5 100%
Thallium, total 0 0
Zinc, dissolved 0.005 <0.005 <0.005 0.005 <0.01 <0.01 <0.005 <0.01 0.004 0.005 6 5 83%
Zinc, total 0 0
Uranium, dissolved 0.0076 0.0046 0.0062 0.0045 0.0051 0.0037 0.0038 0.0046 0.0037 0.0076 0.005 0.0046 8 0 0%
Uranium, suspended 0 0
Uranium, total 0 0
Thorium-228, dis. (pCUL) 0 0 0 0 0 1 0 0%
Thorium-230, dis. (pCi/L) 0 0 0 0 0 1 0 0%
Thorium-232, dis. (pCi/L) 0 0 0 0 0 1 0 0%
Radium-226, dis. (pCUL) 0.4 0.3 0.9 0.4 0.7 0.3 0.9 0.54 0.4 5 0 0%
Radium-226, susp. (pCi/L) 0 0
Radium-226, total (pCi/L) 0 0
Gross Alpha, dis. (pCi/L) 2.2 3.8 7.6 3.8 2.2 7.6 4.35 3.8 4 0 0%
Gross Beta, dis. Ci/L 2.2 2 1.5 <5. 1.5 <5. 2.05 2.1 4 1 25%
NOTE5: Mean and median stabsbc calculated using one-Malt detection limn (1/[ u.t_.)
No = number of non-detects No, %No = number and percent of non detects
Results are in mg/L unless otherwise noted

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