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HISTORICAL SUMMARY OF ANALYTICAL RESULTSGROUNDWATERNORTH COUNTY SANITARY LANDFILLG-4Sample DesignationSampling Date1,2,4-Trimethylbenzene1,3,5-trimethylbenzeneVinyl ChlorideTotal XylenesAcetoneAcrylonitrileCarbon Disulfidetrans-1,4-dichloro-2-butene2-hexanone2-butanone (MEK)Methyl iodideMethyl isobutyl ketonevinyl acetatet-Amyl Methyl ethertert-Butyl AlcoholDiisopropyl etherEthanolEthyl t-butyl etherHexachloroethanen-propylbenzeneAcetonitrileAcroleinAllyl chloride2-chloroethyl vinyl etherChloropreneIsobutanolMethacrylonitrileMethyl methacrylatePropionitrilem/p Xyleneo-XyleneSemivolatile Organic Compounds (ȝg/L)bis (2-Ethylhexl)phthalateAll Other CompoundsOrganochlorine Pesticides and Polychlorinated Biphenyl's (PCBs) (ȝg/L)All CompoundsOrgano-Phosphorus Pesticide (ȝg/L)All CompoundsChlorinated Herbicides (ȝg/L)All CompoundsMetals (ȝg/L)Aluminum, DissolvedAntimony, DissolvedArsenic, DissolvedBarium, DissolvedBeryllium, DissolvedBoron, DissolvedCadmium, DissolvedChromium, Total DissolvedChromium HexavalentCobalt, DissolvedCopper, DissolvedIron, DissolvedLead, DissolvedManganese, DissolvedMercury, DissolvedMolybdenum, DissolvedNickel, DissolvedSelenium, DissolvedSilver, DissolvedThallium, DissolvedTin, DissolvedVanadium, DissolvedZinc, DissolvedNR = Not RequiredNT = Not Tested* = Trace Concentration[1] This data point appears anomalous and therefore was not used for statistical purposes.{1} Parameter also detected in one or more quality control blanks.G-4 G-4 G-4 G-4 G-4 G-4 G-4 G-4 G-4 G-4 G-4 G-4 G-4 G-407/20/20 01/12/21 04/06/21 07/06/21 01/10/22 04/28/22 08/29/22 10/03/22 01/17/23 04/17/23 07/17/23 10/24/23 01/23/24 04/02/24NS NS NS NS NS NS NS NS NS NS NS NS NS NSNS NS NS NS NS NS NS NS NS NS NS NS NS NSNS NS NS NS NS NS NS NS NS NS NS NS NS NSNS NS NS NS NS NS NS NS NS NS NS NS NS NSNS NS NS NS NS NS NS NS NS NS NS NS NS NSNS NS NS NS NS NS NS NS NS NS NS NS NS NSNS NS NS NS NS NS NS NS NS NS NS NS NS NSNS NS NS NS NS NS NS NS NS NS NS NS NS NSNS NS NS NS NS NS NS NS NS NS NS NS NS NSNS NS NS NS NS NS NS NS NS NS NS NS NS NSNS NS NS NS NS NS NS NS NS NS NS NS NS NSNS NS NS NS NS NS NS NS NS NS NS NS NS NSNS NS NS NS NS NS NS NS NS NS NS NS NS NSNS NS NS NS NS NS NS NS NS NS NS NS NS NSNS NS NS NS NS NS NS NS NS NS NS NS NS NSNS NS NS NS NS NS NS NS NS NS NS NS NS NSNS NS NS NS NS NS NS NS NS NS NS NS NS NSNS NS NS NS NS NS NS NS NS NS NS NS NS NSNS NS NS NS NS NS NS NS NS NS NS NS NS NSNS NS NS NS NS NS NS NS NS NS NS NS NS NSNS NS NS NS NS NS NS NS NS NS NS NS NS NSNS NS NS NS NS NS NS NS NS NS NS NS NS NSNS NS NS NS NS NS NS NS NS NS NS NS NS NSNS NS NS NS NS NS NS NS NS NS NS NS NS NSNS NS NS NS NS NS NS NS NS NS NS NS NS NSNS NS NS NS NS NS NS NS NS NS NS NS NS NSNS NS NS NS NS NS NS NS NS NS NS NS NS NSNS NS NS NS NS NS NS NS NS NS NS NS NS NSNS NS NS NS NS NS NS NS NS NS NS NS NS NSNS NS NS NS NS NS NS NS NS NS NS NS NS NSNS NS NS NS NS NS NS NS NS NS NS NS NS NSNS NS NS NS NS NS NS NS NS NS NS NS NS NSNS NS NS NS NS NS NS NS NS NS NS NS NS NSNS NS NS NS NS NS NS NS NS NS NS NS NS NSNS NS NS NS NS NS NS NS NS NS NS NS NS NSNS NS NS NS NS NS NS NS NS NS NS NS NS NSNS NS NS NS NS NS NS NS NS NS NS NS NS NSNS NS NS NS NS NS NS NS NS NS NS NS NS NSNS NS NS NS NS NS NS NS NS NS NS NS NS NSNS NS NS NS NS NS NS NS NS NS NS NS NS NSNS NS NS NS NS NS NS NS NS NS NS NS NS NSNS NS NS NS NS NS NS NS NS NS NS NS NS NSNS NS NS NS NS NS NS NS NS NS NS NS NS NSNS NS NS NS NS NS NS NS NS NS NS NS NS NSNS NS NS NS NS NS NS NS NS NS NS NS NS NSNS NS NS NS NS NS NS NS NS NS NS NS NS NSNS NS NS NS NS NS NS NS NS NS NS NS NS NSNS NS NS NS NS NS NS NS NS NS NS NS NS NSNS NS NS NS NS NS NS NS NS NS NS NS NS NSNS NS NS NS NS NS NS NS NS NS NS NS NS NSNS NS NS NS NS NS NS NS NS NS NS NS NS NSNS NS NS NS NS NS NS NS NS NS NS NS NS NSNS NS NS NS NS NS NS NS NS NS NS NS NS NSNS NS NS NS NS NS NS NS NS NS NS NS NS NSNS NS NS NS NS NS NS NS NS NS NS NS NS NSNS NS NS NS NS NS NS NS NS NS NS NS NS NSNS NS NS NS NS NS NS NS NS NS NS NS NS NSNS NS NS NS NS NS NS NS NS NS NS NS NS NSNS NS NS NS NS NS NS NS NS NS NS NS NS NS30 of 146