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r <br /> 1 <br /> April 23, 1991 <br /> Project 310-p1.02 <br /> Page 2 <br /> e in oundwater flow direction from <br /> groundwater elevationand <br /> rthwesteriy s nl a the revious groundwater mQ tong <br /> north-northwesterlyao <br /> event. ng Wells U-1,U-2,and U-3 on <br /> Groundwater samples collected from ivlonito trot <br /> were analyzed far total petroleum hydrocarbons calculated as <br /> February 14, 1991, petroleum hydrocarbons calculated as diesel <br /> gasoline(TPH-gas°line),total p lens(B-IT--X <br /> and benzene, toluene,ethylbenzene,and xy ll U.Z as found to <br /> (TPI -diesel , A oundwater sample( ) le collected from�Ve <br /> compounds). Th i. asolute„:10 ppb beztzene;and 1 PP . <br /> axts Pex biUioa:{ppb).J g ell 1-2 contained 23�ppb, <br /> �pxltal4 p The oundwater sample from b leize These <br /> Ieme�=(Table 2, 9:Y a 4S b etli lbetize�e,:artd 35 PP ry .... <br /> 4 benzene, <br /> �gsoline, ,. :PP htl lower than in the previous <br /> dissolved hydrocarbon con,.,,,. tions e U 3�antazne°d na detecfa�l� <br /> quarter. Caro 'atex collecNO <br /> ted froth diesel,orBTEX certified lyrical reports <br /> ncerttr tions afTP-H ga50lll0.e;T� <br /> Zp -diesel was <br /> e-tected luded in Attachmt ring ent <br /> B. e <br /> and field data sheets in <br /> Additional Investigation Q oundwater underlying the <br /> tP extent of petroleum hydrocarbons in the soil and ,r <br /> endy defined. PACIFIC submitted aotechnical oeport dated <br /> ter <br /> site is not cttrr the results of the s <br /> February 13, 1991,docurnenting endatians to install three^�iditional <br /> investigation conductend at the and ERecour e.�ratory soil borings in the western <br /> urrently in the <br /> groundwater❑sonito g <br /> portion of the site were included in that report. <br /> sPo•ro eed with the nest ation; The <br /> IM <br /> p the necessary permits P endtn,t <br /> he <br /> process of obtaining In event is scheduled for May 1991.p <br /> next quarterly groundwater same <br /> installation of the proposed wells. <br /> `I <br />