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AMERICAN SODA INTERIM STATUS <br />DATA SUMMARY GROUND WATER WELL 21-4A <br />JULY 1, 1999 - MARCH 31, 2010 <br />Well ID 21-4A 21-4A 21-4A Numeric Earl Regulatory <br />Sample Date 8/242009 11/16/2009 3/15/2010 Protection warning Standard BASELINE DESCRIPTIVE STATISTICS OPERATIONAL DESCRIPTIVE STATISTICS <br />Sample T pe* Prima Prima Prima Level Indicator Regulation Standard JULY 1, 1999 - SEPTEMBER 30, 2000 OCTOBER 1, 2000 - DECEMBER 31, 2009 <br />Completion Horizon A Groove A Groove A Groove NPL EWI Number 41 Classification <br /> <br />Parameter m /l " TOTAL <br />SAMPLES BELOW <br />DETECTION MAXIMUM <br />VALUE MINIMUM <br />VALUE MEAN <br />VALUE STANDARD <br />DEVIATION TOTAL <br />SAMPLES BELOW <br />DETECTION MAXIMUM <br />VALUE MINIMUM <br />VALUE MEAN <br />VALUE STANDARD <br />DEVIATION <br />Boron, dissolved 4.4 4.4 4.9 None 5.35 0.75 Agricultural 15 0 4.8 4.3 4.58 0.152 73 0 5.2 0.3 4.49 0.588 <br />Calcium, dissolved 5 6 6 None None None None 15 1 11 5 7.5 1.6 73 1 744 1 16.2 86.4 <br />on, dissolved 0.3 0.3 0.40 None None 0.3 Secondary <br />Drinking Water 15 0 3.3 0.7 1.657 0.550 73 3 1.85 0.07 0.790 0.470 <br />Lithium, dissolved 1.1 1 1.1 None 2.5 2.5 Agricultural 15 0 1.2 1 1.053 0.074 73 1 1.3 0.1 1.02 0.144 <br />Magnesium, dissolved 5 4 4 None None None None 15 1 20 5 7.3 3.7 73 4 13 1 5.0 1.6 <br />Potassium, dissolved 13 15 22 None 27.62 None None 15 1 24 10 15.1 3.1 73 2 20.5 1.5 13.6 2.8 <br />Silica, dissolved 17 18 17 None 33.84 None None 15 0 25 17 19.5 2.1 73 0 27 8.6 17.5 2.0 <br />Sodium, dissolved 7580 7960 7630 None 9570 None None 15 0 8410 7360 7844.7 280.2 73 0 8650 7060 7784 361 <br />Bicarb as CaC03 16500 15600 15800 None None None None 15 0 19300 11700 16183 1626 73 0 18800 12500 16822' '. 1006 '.: <br />Carbonate as CaC03 360 732 765 None None None None 15 14 4290 1 340 1094 73 52 1050 1 154 284 <br />Hydroxide as CaC03 <2 <2 <2 None None None None 15 15 100 1 54 51 73 73 1 1 1 0 <br />Total Alkalinity 16800 16300 16600 None 23942 None None 15 0 19300 15100 16470 1059 73 0 18800 12500 16974 965 <br />Cation-Anion Balance / -3.2 3.2 -2.0 15 9 4.4 -8.1 -0.8 3.6 73 56 8.8 -8.7 -21 3.5 <br />Sum of Anions meq/L 357 329 351 14 0 407 323 354.57 21.72 73 0 397 271 359.29 19.76 <br />Sum of Cations meq/L 335 351 337 14 0 370 313 343.50 14.91 73 0 382 312 . .344.11 16.23. <br />Chloride 630 630 640 None None 250 Secondary <br />Dnnkin 15 0 1965 600 721 345 73 0 1020 520 646 71 <br />Cord @ 25C(umhos/cm) 22900 23500 23400 None 28651 None None 15 0 23600 2220 21448 5436 73 0 24900 2330 22188 3699 <br />Fluoride 31.5 30.8 30.6 None 41.34 2 Agricultural 15 0 34 27 29.9 1.9 73 0 36.1 24 31.5 2.1 <br />pH (units) 8.4 8.6 8.5 None None 6.5- 8.5 Secondary <br />Dunkin 15 0 8.3 7.6 8.0 0.2 73 0= 3.6 7.75 8.2 0.2 <br /> <br />Total Dissolved Solids <br />18800 <br />19100 <br />18900 <br />None <br />22366 <br />None ILRI <br />Quality <br />15 <br />0 <br />24600 <br />17300 <br />19373 <br />1539 <br />73 <br />0 <br />20900 <br />18200 <br />19089 <br />405 <br />Sulfate <1 <5 1 None None 250 Secondary <br />Drinking 15 9 50 5 21 19 73 '. 38 150 0.5 17 25 <br />TDS(calc) 18500 18100 18600 15 0 20300 17600 18680 893 73 0 20100 15600 18769 751 <br />TDS ratio 1.02 1.06 1.02 14 0 1.23 0.93 1.04 0.07 73 0 1.29 0.94 1.019 0.05 <br />Temperature 12.6 11 11 15 0 17.4 10.4 12.7 2.1 73 0 19 8.5 12.4 2.5 <br /> <br />' Sample Type = Primary (one sample is represented), = Average (duplicate samples are averaged). " Constituents reported in mg/I unless otherwise noted. <br />A symbol "<" before a number indicates that the value is not detected. The number following "<" is the analytical limit of detection based upon the method and the sample matrix. <br />Analyte concentrations reported below the detection limit are set equal to one half the detection limit for all statistical calculations.