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<br />Iliiill�g',ill;�lr Ir 'results for the soil samples collected underneath h ' II11,ti "III 1 '
<br />the gasoline tanks are presented in Table 1 I II 1i+1 I I I
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<br />11 IT iry,;, The, an I results for the soil samples collected undern i
<br />In II Irlill rg1 �,6,' II,Itn,1n„ VII l I ;, „ , eath the gasoline tanks late asl„uul tin 1;�1' ! 'i ”'
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<br />fl IIIn�,1;;f;,,1 ,follows TPHI (gasoline) ranged from',C 10 to 5,300 mg/kg, benzene ranged from <5'to°,'l11" ' , 11
<br />360 ( ' I s r III !I' Ii III 11 q I ' rll
<br />Er µg/kg, toluene ranged from „< 10l to 44,500 µg/kg, y e ranged from,' < 10 to'
<br />E I etll lbenzen r
<br />X11 L iiJ� JdrT fill l uNi jl l l b 1 i �tl $ - x F =nri I ""illi %�'I 'It pry i P a"i in
<br />;I iI 1187,000 µg/kg;l'total xylenes ranged from < 10 to 3113 000 µg/kg and total lead 'ranged from „4',� °I rillIj
<br />6 to 24, µg/kg. EDB was not detected an an of the; (soil samples.
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<br />11 One soil sample was collected underneath the, waste oil tank and analyzed for BTEX, total r I '� 1 l t a r
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<br />chlorinated hydrocarbons, anI d total extractable, petroleum hydrocarbon (TEPH) The
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<br />" "' results were below tthe detection limits'of 'the analyses for benzene (5 ppb), toluene (5 ppm), dill {JII Ill l,; n I! 11
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<br />ethylbenzene, (5 ppm),' ° and total zylenes'I (10 s ppb} 'total,„ lead" (4 ppm)(' clflonnated °
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<br />1 hydrocarbons (5 ppm), and TEPH (10 -ppm).'
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<br />i' In (August 1991! WCC conducted",a 'field investigation in two phases a subsurface soil l '
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<br />I, r l ' " investigation followed by a groundwater investigation During the soil investigation, three
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<br />F soil bonngs were advanced around the gasoline tanklexcavation to a depth of 90 feet below';
<br />i ,ground surface Ilio evaluate the extent of potential soil contamination from the tanks Soil' r> „
<br />samples) were collected at five foot intervals, and three samples from each boring were jE,
<br />' submitted to the laboratory for analysis based oni,visual observation of the soil conditions'and I I 1
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<br />the headspace measurements of the volatile organic compound concentration of the ,sample iI ; ,
<br />IIA �The!submitte& samples ,
<br />were,,
<br />w'el rellanal yI zei, for TPIH"I , gasoline by EPA method, -8015-,
<br />II 015;al BTEX
<br />TEX by -4 Ili -,Ir'° 1r II
<br />EPA method 8020/5030 and, tot'lead' concentration by EPA ehod 7241. The
<br />I I ,1ait cetl 'm ' 1analytical
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<br />results for soil sam les'colldfrom the1bonn 's are resented in Ta6lell' Monitoring
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<br />wIells were instaled in each of the hreebonngs:,,Groundwater samples, collected from th111f
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<br />,wells were analyzed I'for'total fuel,petroleum'hydrocarbon (TFH) gasoline by'EPA method
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<br />5030, BTEX, by 'EPA l method ',8020,' and fecal "cloliform by Standard Method 9221 The II I ''
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<br />`analytical results ; for"ground " ter ,samples Collected from the wells" i`sy piesentecl�in Table 2-'i ill r 1 r
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<br />t Elevated levelsamples°I "
<br />s sof TPH (gasoline) were' not' encountered in 'the anal zed soil l I I', ; III
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<br />collected dunngl€ the August 11991 !'subsurface ! soil investigation ' The analytical results (for
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<br />these samples were' below, the detection limit l of'the' analysis 1(0 5 mg/kg) ''No evidence of II
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<br />Will (gasoline) Illsoil' contamination was detected+gin' the so1L samples collected ' during this', I
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<br />investigation in�,fhe area adjacent to the )gasoline tank Eexcavation Elevated,levels of toluene f� 11
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<br />and ethyl benzene' were not encountered in ilthe 'soill,samples analyzed The analytical results
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