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' HISTORICAL ANALYTICAL RESULTS
<br /> GROUNDWATER
<br /> CORRAL HOLLOW SANITARY LANDFILL
<br /> MW-4
<br /> Units:m2/1,unless noted
<br /> Simple Designation
<br /> Sampling Date 12/01/97 02/02/98 04/15/98 07/16/98 10/30/98 01/19/99 04/19/99 07/19/99 10/13/99 01/20/00 04/24/00 07/31/00 10/18/00 01/31/01 04/23/01 07/26/01 10/16/01
<br /> Monitoring and Field Parameters
<br /> General Water Quality Parameters
<br /> Temperature,Field(°C) 21.1 20.6 20.6 24.5 21.9 22.4 22.6 22 22.7 22.4 21.3 22.7 23.1 23-A 23.2 26.1 20.8
<br /> Ch ori a 275 312 299 283 287 336 303 273 266 262 255 253 250 649 232 220 230
<br /> Nitrate-Nitrate as itrogen 13 13 12.0 11.0 10.2 59 8.8 12 9.39 10.8 9.75 10.2 11.2 9.73 9.27 15 13
<br /> --ro-ta-1-Mis-olved Solids 1,840 1,750 1,710 1,480 1,830 1,638 1,765 1,170 1,800 1,800 1,770 1,780 1,750 1,750 1,680 1,600 1,600
<br /> ulfate 700 666 676 662 624 897 586 631 650 599 613 630 630 241 628 620 610
<br /> ,field units 7.32 7.61 7.31 7.06 7.50 7.28 7.28 7.24 7.97 7.49 7.27 6.69 7.27 7.48 6.82 7.05 6.51
<br /> Electrical Conductivity,field(umhos 2,350 2,020 2,390 2,412 2,531 2,530 2,480 2,475 2,458 2,562 2,568 2,427 2,470 2,651 2,390 2,400 2,330
<br /> _ urbiti ,Fie ( T ) 47.6 76 4.8 118.7 35.2 55 63.7 53.2 >200 >200 21.9 42.4 31 70.8 48.6 21.1 91.6
<br /> Calcium
<br /> --
<br /> Potassium - - -
<br /> Magnesium
<br /> Sodium
<br /> Volatile Organic Compounds(ug/I) _ _
<br /> -Acetone - -- --_ - �_0-<10__--<10_--<0.80 <0.60 <0.80 --<6.-9 ----<0.80_- 79- --NR <1.79 <1.79 <1.79 <1.79 <f-.19--<1.80 <1.8
<br /> Benzene ------ -- ---ND--- ND--- NO -NO ND NO ND _ NO <0.04 _<0.22. <0.05 <0.05 <0.05----X0.05---0.0658'---0.16` _
<br /> <O-.O 5-
<br /> Bromomethane
<br /> 2-Butanone ND NO NO NO NO NO NO NO <0.7 NR <0.7 <0.7 <0.7 <0.7 <0.7 <0.7 <0.70
<br /> Chloroform <1 <1 <1 <0.83 <0.83 <0.83 <0.83 <0.83 <0.06 <1.43 <0.07 <0.07 <0.07 <0.07 <0.07 <0.07 <0.07
<br /> Chloromethane
<br /> Olc lorodifluoromethane_ <2 <2 _<2 <0.19 -<O.19 <0.19--<019 <0.19 <0.07 <0.31 <0.09 <0.09 <0.09 <0.09 <0.09 <0.09 < .09
<br /> 1,1-Dichloroethane F ND ND ND ND ND ND ND ND __ <0.0F4-<0.16 <0.04 <0.04<0.04 <0.04 <0.04 <0.04 <0.04
<br /> cis-1.2-Dic loroethene ND ND ND NO ND ND ND NO <0.04 <0.2 <0.09 <0.09 <0.09 <0.09 <0.09 <0.09 <0.09
<br /> trans-1,2-Dichloroethene NO NO NO NO ND NO NO NO <0.05 <0.22 <0.09 <0.09 <0.09 <0.09 <0.09 <0.09 <0.09
<br /> 1,2-Dichoropropane NO NO O NO NO NO NO NO <0.07 <0.17 <0.09 <0.07 <0.07 <0.07 <0.07 <0.07 <0.07
<br /> Methylene hone -- <2 <2 <2 <7.1 <7.1 <7.1 <7.1 <7.1(0.0751*) <2.14 <0.06 <0.06 <0.06 <0.06 <0.06 <0.06 <0.06
<br /> Methyl tent=butyl et er _ __. __ _ _ -- - -- - - --<0:08--<0-08 <0.08-<0.08 <0.08
<br /> ----Meth
<br /> N�thalene -- - _ __ --<0.1 <0.01 <0.1 <0.t
<br /> Tetrachloroet ene <0.6 <O.fi<0.6 <0.87 <0.87 <0.87 <0.87 <0.87 <0.07 <0.31 <0.08 <0.08 <0.08 <0.08 <0.08 <0.08 <O-
<br /> Toluene <0.07 <0.07 0.21*
<br /> - 1,2,3=fnc oro enzene <0.12 0.1 * <0.12
<br /> Trichloroffu-o-r-omethane <2 <2 <2 <1.4 <1.4 <1. < <1. <0.04 <0.39 <0.07 <0.07 <0, <0.07 <0, <00 -';ZO.07
<br /> I rTchloroet ene
<br /> 1-�2.4-Tiimeih-1 enz�ene�- --- --- - --___
<br /> -Glnyl C lore <1 <1 <1 <1.9 1.9 <1.9 <i.9 <1.9 <0.05 <0,4 <0.06 <i <.06 < .06 <0.06 < .O6 <0.06
<br /> m, -Xylene <0.21 <0.21 <0.21 <0.21
<br /> o x ene <0.07 <0.07 <0.07 <0.07 <0. 77
<br /> Organic compounds detected in one or more samples are listed.
<br /> [1]=This analytical result appears to be anomalous and therefore was not used in the statistical evaluation procedures.
<br /> (1)=Also found in one or more quality control blanks(indicated for data from 10-13-99 to present)
<br /> *=Trace concentration
<br /> NR=Not Requested
<br /> MW4;Printed:1/15/2004 11 of 28
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