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-r <br /> sem- - <br /> RAW <br /> va <br /> September 21, 1987 Page 3 Project 195-1.1 <br /> Sample Analysis <br /> rrw <br /> All soil and ground water samples were transported in a refrigerated <br /> t container under chain of custody documentation to California Water Labs of <br /> Modesto for analysis. <br /> :s <br /> The ground water sample from MW-1 and the soil sample from DH-1 at 10 feet <br /> depth were analyzed for halogenated and aromatic volatile organic <br /> ,., constituents using EPA Test Methods 601/602 (water) and 8010/8020 (soil), <br /> and for gasoline using a flame ionization detection (FID) method. <br /> i3 <br /> The ground water sample from MW-2 and the soil sample from DH-2 at 5 feet <br /> depth were analyzed for halogenated and aromatic volatile organic <br /> lY constituents using EPA Test Methods 601/602 (water) and 8010/8020 (soil), <br /> and for diesel using a flame ionization detection (FID) method. <br /> ' r.m <br /> 35 The soil sample from DH-3 at 1 foot depth was analyzed for halogenated and <br /> aromatic volatile organic constituents using EPA Test Method 8010/8020, and <br /> Ia for oil using a flame ionization detection (FID) method. <br /> The soil sample.€rom DH-4 at 1 foot depth was analyzed for oil using a flame <br /> ionization detection (FID) method. <br /> g . Results <br /> �. The results. of the analyses are summarized below (copies of the certified <br /> laboratory analysis sheets are presented in Appendix }1): <br /> Area i. (DH-1/MW-1) no gasoline was detected in the ground water sample <br /> or the soil sample taken at ten feet below ground surface Tite': <br /> E:a amoviits of.Triel loroethyLene.:and cis. . 2 I?ichl`orc a ene.were <br /> 'deteoted�an the g'r'ound"water sample ':^ Hcyiever,wtliese„ dents <br /> � � were"preaeait 3n concentx�ctions less than,,l u8/fir cx p�r�..Rper _ <br /> ).a ¢1iil.lion,�,(Ppb) smfeh ax�;belo�s,the,state'eaYabl�:ahed acLian l��e:1s” <br /> �for,.drinki;i8,.wat . supplies far these components (5 ppb and16 <br /> � y ppb respectively). These �;omponents were not detected in the <br /> i.� <br /> soil sample at ten foot depth. <br /> The presence of trace concentrations of these components in the shallow <br /> ground water near MW-1 may indicate the existence of a contaminant plume <br /> ly origina. ing off-site. We understand from the San Joaquin Local Health <br /> District that contamination was recently discovered at one of the small" <br /> to manufacturing plants across from the site on the north side of Navy Drive. <br /> �y An investigation into the extent of this contamination has been ordered by <br /> -----..._....._._.._.---._._..---------------..--_------_.__---the-San-Joaquin-Local-Health-District. <br /> __-- <br /> i �. <br /> ha o <br /> 1s _ <br /> ! ` GBctar_lssociates <br />