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-BOS
40 pH (std units) 8.7 8.1 7.6 7.4 8.4 7.7 7.8 7.2 7.7 7.7 7.2 8.7 7.8 7.7 10 0 0%

SW-130S SW-130S SW-BOS SW-BOS SW-BOS SW-BOS SW-BOS SW-BOS SW-BOS SW-BOS SW-BOS MIN MAX MEAN MEDIAN COUNT ND %No
1020/98 1123/98 12/16/98 1/18199 2/16/99 3/16/99 420/99 5/17/99 6/15/99 721/99 9/13/99

Conductivity(umhos) 477 467 497 356 808 391 276 139 192 388 139 808 399 390 10 0 0%
Total dissolved solids 306 309 330 221 534 316 180 117 138 252 117 534 270 279 10 0 0%
Total suspended solids 4 3 2 3 2 1 503 5 11.3 <10. 1 503 53.9 3.5 10 1 10%
Hardness, total 150 150 150 120 120 150 142.5 150 4 0 0%
Carbonate 0 0
Bicarbonate
0
0
Alkalinity, Dissolved 66 40 61 98 40 98 66.25 63.5 4 0 0%
Alkalinity, total 150 100 97 82 140 83 66 40 40 150 94.75 90 8 0 0%
Nitrate Nitrogen 0.4 1.8 1.7 0.8 2.5 0.4 0.5 <0.1 <0.5 <0.5 <0.5 <0.1 2.5 0.8 0.4 11 4 36%
Ammonia, total 0 0 0 0 0 0 0 <1. <1. <1. 0 <1. 0.15 0 10 10 100%
Calcium 35 34 33 28 48 13.8 31.1 32 13.8 48 31.9 32.5 8 0 0%
Sodium, dissolved 44 39 44 28 72 8.9 31.5 28.8 8.9 72 37.0 35.3 8 0 0%
Magnesium, dissolved 15 15 16 11 19 4.4 12.8 12.9 4.4 19 13.3 14.0 8 0 0%
Potassium, dissolved 2.8 2.4 2.5 2 3.6 1.2 2.3 2.1 12 3.6 2.4 2.4 8 0 0%
Sulfate 120 120 130 77 240 89 54 15 22 78 15 240 94.5 83.5 10 0 0%
Fluoride, total 0.6 0.5 0.5 0.4 0.9 0.4 0.9 0.6 0.5 5 0 0%
Chloride 20 13 14 13 20 15 13 10 11 15 10 20 14.4 13.5 10 0 0%
Phosphorous 0 0
Aluminum, dissolved <0.5 <0.5 <0.5 <0.5 0.3 0.3 <0.5 0.260 0.25 5 4 80%
Aluminum, total 0 0
Antimony, dissolved <0.03 <0.008 0.005 <0.003 <0.003 <0.006 <0.006 <0.006 <0.003 <0.03 0.0045 0.003 8 7 88%
Antimony, total 0 0
Arsenic, dissolved <0.05 <0.003 <0.005 <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 0.04 0.04 <0.1 <0.1 <0.1 0.04 <0.1 0.046 0.05 5 3 60%
Barium, total 0.03 0.03 0.04 0.03 0.04 0.033 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 <0.002 0.0008 0.00075 8 8 100%
Boron, total <0.05 0.07 0.05 <0.05 0.07 0.048 0.05 3 1 33%
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 <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 0.0068 0.01 7 7 100%
Copper, total
0
0
Iron, dissolved <0.03 <0.03 <0.03 0.03 0.2 <0.1 <0.03 0.2 0.054 0.0225 6 4 67%
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 0.003 <0.002 <0.002 0.003 0.0017 0.001 3 2 67%
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 <0.0002 <0.0002 <0.0002 <0.0002 <0.0002 0.0001 0.0001 5 5 100%
Mercury, total 0 0
Molybdenum, dissolved 0.198 0.23 0.21 0.11 0.5 0.014 0.094 0.081 0.014 0.5 0.180 0.154 8 0 0%
Nickel, dissolved <0.02 <0.04 <0.04 <0.04 <0.04 <0.01 <0.01 <0.01 <0.01 <0.04 0.0131 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 0.006 0.00375 8 8 100%
Silver, dissolved <0.005 <0.001 <0.0002 <0.0002 <0.0002 <0.01 <0.0002 <0.01 0.001 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 0.0038 0.0005 8 7 88%
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 0.0036 0.0025 7 7 100%
Zinc, total
0
0
Uranium, dissolved 0.0059 0.0075 0.0119 0.0034 0.0052 0.0031 0.0047 0.0017 0.0029 0.0017 0.0119 0.0051 0.0047 9 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%
Thoriunr230, dis. (pCVL) 0 0.1 0 0.1 0.05 0.05 2 1 50%
Thorium-232, dis. (pCVL) 0 0 0 0 0 0 2 2 100%
Radium-226, dis. (pCVL) 0.3 0.3 1.5 0.3 0.2 0.4 0.2 1.5 0.5 0.3 6 0 0%
Radium-226, sus p. CiA. 0 0
Radiurri-226, total (pCVL) 0 0
Gross Alpha, dis. (pCi/L) 4.2 5.7 11 5.1 1.6 2.6 1.6 11 5.03 4.65 6 0 0%
Gross Beta, dis. CVL 4.6 2.9 11 0.8 <5. <5. 0.8 11 4.05 2.7 6 2 33%
NOTES: Mean and median statistic calwlated using one-haft detection limit (12 D.L.)
ND = number of non-detects ND, %No = number and percent of non detects
Results are in mgrL unless otherwise noted

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