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HISTORICAL SUMMARY OF ANALYTICAL RESULTS <br /> GROUNDWATER <br /> NORTH COUNTY SANITARY LANDFILL <br /> Sample Type:Water G-2&G-3 <br /> Units:mo,unless noted <br /> ampie Designation -3 <br /> Sameling Date 12/1/94 1/3/95 4/3/95 7/7/95 10/2/95 1/2/96 4/5/96 7/10/96 11/8/89 11/6/90 1/24/91 4/10/91 7/22/91 4/2/92 7/2/92 4/8/94 <br /> Volatile Q[gaiiic Com ounds Cont. <br /> 10- chloroethane < .2 < .2 <0.28 <0.2 <0.2 <0.2 < , < , <1 < R R NR NR NR N <br /> - o oroet ane <br /> <0.46 <0.46 <0, <0.5 <0.5 < .5 < .5 <0. < <1 R NR N N <br /> i oroe ene < < <0.4 NT N T T NT T <br /> NT NT <br /> .50 <0.1 <0.1 <0.1 <0, <GJ <1 < NR R <br /> trans- ,2 ich oroethene NT NT < <0.2 <0, NT NT NT NT T N <br /> 1,2-dichloropropane NT NT T <0.5 <0.5 <0.5 N N N N <br /> 1,3 i oropropane NT NT < ,2 < <0. NT T N N <br /> 2, - loropropane NT NT NT NT NT < .4 <0.4 <0. N r NT NT NT N <br /> 1, ichloropro ene NT < .4 < < , NT N N N <br /> is-1,3-di loropropene NT N <0.5 <0. <0.5 T NT N N T T <br /> trans-1, -dichloropropene N NT NT < , < < .b <br /> b NT NT NT NT NT <br /> enzene <0.47 <0.47 <0. 7 < .1 <0. <U.-1 <0.1 <0.1 <1 < N R NR NR <br /> Freon 113 NT N T N N T NT NT N NT <br /> HexachFro utadiene T T NT T N <0.4 <0.4 <0.4 NT NT N NT N <br /> 2- exanone NT NT NT NT NT <0.5 <0.5 <0.5 N T NT N T NT NT <br /> I omet ane NT NT T < . < .2 <0. NT N N NT NT NT <br /> Isobutanol T NT N N-T­____NT NT NT NT T NT N <br /> T NT NT <br /> so rop ibenzene NT NT NT NT <0.3 <0.3 <0. NT N NT NT NT <br /> -iso ro Itoluene T NT N T NT NTN <br /> et a onitri e N T T T <br /> Methylene C orNT NT <br /> ide <0.47 <0.47 < <0.2 <0.2 <0.2 < <0.2 <10 <10 NR NR NR N <br /> R NR <br /> Methyl methacrylate NT NT NT N NT NT NT NT NT NT NT <br /> methy-2 entanone NT NT N N <3 < <3 NT NT NT NT N N <br /> Metn1X tert-butyl ether NT NT NT NT NT NT NT NT NTNT NT <br /> Naphthalene <1.6 <1.6 <1. <0. 6 <0.060 <0, < < ,3 <5 NR NR N NR NR NR <br /> roionitri e N N NT N NTT NT NT NT TNr---NT­---­Nr- <br /> r [benzene <br /> n- ro N T <0. < <0. T N <br /> rene NT NT NT T <0, <0.1 <-O-.T NT NT NT NT NT N <br /> 1,12,2-tetrachloroethane T <0.2 <0,-T NT NT NT T <br /> NT NT NT <br /> 1, -tetrach oroet ane NT NT NT < .1 <0.1 < .1 NT NT NT NT NT N T N <br /> Tetrachloroethene P < ,44 NR <0.4U4 < .3 <0. <0.3 <0.3 <0.3 <1 < NR N <br /> Toluene <0.35 <0. 5 <0.35 <0. < . <0,3 <0. <0.3 <1 <1 NR R NR NR N <br /> R NR <br /> 1, ,3- rich oro enzene < ,4 < . < < <0.3 <0.3 <0. <0.3 NR NR NR NR NR N <br /> 1,24nchioroenzene <1. <1, <1.9 <0. <0.2 <0.2 <0.2 <0. R <br /> 1,1,2-trichloroethane NT NT NT <0.5 <0.5 <0.5 NT NT NT T <br /> NT <br /> 1,1,1-trichloroethane NT NT NT <0.3 <0.3 <0. TNT NT NT NT NT T <br /> Trichloroethene N NT NT NT <0.4 < , <0.4 NT N N T <br /> T-nailorofluoromethane NT NT NT <0.4 <0.4 <0.4 NT NT NT T NT <br /> NT N1- <br /> 1,2,3- oropropane NT NT T N T <br /> NT <br /> 1, ,5-tnmethibenzene NT NT <0.2 < <0. N N <br /> ,4- rimeth (benzene <0.84 <0.8 <p, < .1 <0, <0.1 <0.1 <0.1 NR N R NR R <br /> vinyl acetate NT N < < <3NT NT NT NT NT NT NT NT <br /> --vinyl Chloride NT <br /> NT <0, < ,4 < .4 N <br /> m p leve <0. 7 < .47 <0. 7 < .1 <0. < .1 < .1 <0. < <1 NR NR NR N <br /> <0.1 <0.1 <1 <1 R N N R N <br /> otal Xylenes <1.4 <1.4 <1.4 <0.4 <0.4 < < < ,4 <1 < NR <br /> R R N NR <br /> Not Required <br /> NT=Not Tested <br /> =Trace Concentration <br /> [1] pH meter was not functioning properly. This data point was not used for statistical analysis. <br /> [2]This data point appears anomalous and therefore was not used for statistical purposes <br /> M G�ARCM Pnnl 1/20 M ® M M M M M <br />