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TABLE 1 <br /> SOIL ANALYTICAL RESULTS <br /> PETROLEUM HYDROCARBONS AND VOLATILE ORGANIC COMPOUNDS <br /> SOUTH SHORE PARCELS <br /> STOCKTON DEPARTMENT OF HOUSING AND REDEVELOPMENT <br /> STOCKTON,CALIFORNIA <br /> Results in micrograms per kilogram(ug/kg) <br /> except where noted <br /> Investigation Sample Sampling Boring Sample TPH TPH TPH Benzene Toluene. Ethyl- Total MTBE VOCs <br /> Area Number Date Number Depth as Gasoline as Diesel as Motor Oil benzene Xylenes 1,2,4- <br /> (feet) (mg/kg) (mg/kg) (mg/kg) PCE Naphthalene Isopropylbenzene n-propyl Trimethyl sec-butyl n-butyl <br /> benzene benzene benzene benzene <br /> i <br /> Analytical Method 8015M or 8020 8020 or 8260b 8010 8260b <br /> Re orcin Limit 50 50 50 50 50 <br /> 4 4TP-1-1.0 9/15/99 1 1.0 <1.0 <10 -- <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 <10 <5.0 <5.0 <5.0 <5.0 <5.0 <br /> 4TP-1-6.0 9/15199 1 6.0 _ <1.0 <10 -- W <5.0 <5.0 <5.0 <5.0 <5.0 -- -- <br /> 4TP-1-10.0 9/15/99 1 10.0 <1.0 <10 <5.0 <5.0 _ <5.0 <5.0 <5.0 <br /> -_4TP-2-1.0 9/15/99 2 1.0 <1.0 <10 I - <5.0 <5.0 <5.0 <5.0 <5.0 -- - mm - - -- <br /> 4TP-2-6.0 9/15/99 -2 6.0 <1.0 <10 - <5.0 <5.0 _ <5.0 <5.0 <5.0 <5.0 <10 <5.0 <5.0 <5.0 <5.0 <5.0 <br /> 4TP-2-7.0 9/15199 2 7.0 <1.0 2801 <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 <10 <5.0 <5.0 <5.0 <5.0 <5.0 <br /> 4TP-2-10.0 9115199 2 10.0 <1.0 <10 -- <5.0 <5.0 <5.0 <5.0 <5.0 -- -- -- - -- -- -- <br /> 4TP-3-1.0 9115199 3 1.0 <1.0 <10 == <5.0 <5.0_ <5.0 <5.0 <5.0 <5.0 - <10 _ <5.0 <5.0 -- <5.0 <5.0 <5.0 <br /> 4TP-3-6.0 9/15/99 3 6.0 <1.0 <10 <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 <br /> 4TP-3-10.0 9/15/99 3 10.0 <1.0 <10 _ <5.0 <5.0 <5.0 <5.0 <5.0 - - <br /> 48-1-1.0 9/16/99 1 1.0 <1.0 <10 - <5.0 <5.0 <5.0 <5.0 <5.0 -- <br /> 48-1-6.0 9116199 1 6.0 <1.0 4304 <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 <10 <5.0 <5.0 <5.0 <5.0 <5.0 <br /> 413-1-10.0 9/16/99 1 10.0 <1.0 <101 <5.0 <5.0 <5.0� <5.0 <5.0 -- -- -- -- -- -- <br /> Average NC NC NC ND ND ND ND ND ND _ ND ND ND W ND �ND m�ND <br /> Maximum NC NC NC ND ND ND ND ND ND ND ND ND ND ND ND <br /> Minimum NC NC NC ND ND ND ND ND ND ND ND ND ND ND ND <br /> Std.Dev. NC NC NC ND ND ND ND ND ND ND ND ND ND ND ND <br /> Count NC NC NC ND ND ND ND ND ND ND ND ND ND ND ND <br /> t-value NC NC NC ND ND ND ND _ ND ND ND T ND ND ND ND ND <br /> 95%UCL NC NC NC ND ND ND ND ND ND ND ND ND ND ND ND <br /> Notes: <br /> NC=Not calculated-Toxic componets of TPH mixture are evaluated. <br /> ND=Not detected at or above the stated reporting limit. <br /> TPH=Total petroleum hydrocarbons <br /> MTBE=Methyl-tert-butyl ether <br /> VOC=Volatile organic compounds <br /> PCE=Tetrachloroethene <br /> Std.Dev.=Standard Deviation <br /> 95%UCL=95 percent upper confidence limit on the arithmetic mean <br /> a=ND value not specified in lab report. <br /> Not analyzed or not applicable <br /> 1=Asphalt is present in these samples. <br /> 2=Hydrocarbons in the gasoline range are not typical of gasoline. <br /> 3= Hydrocarbons in these samples include Diesel#2 and motor oil. <br /> 4=Sample contains mostly asphalt. <br /> 1 <br /> 7 <br /> Page 5 of5 t2l14/99 <br /> SOMA 99-221 S DRAFT <br />