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VU.- y -sa-=-ter= ,., - `4A72- � Q a - -. :, a •_ �, Y � <br /> 3�s '� - 4 ,fps Vic. a ' ti-°'f s 3's• - ...hx � :.r° r <br /> 4A72- <br /> NA <br /> ff �.%j"�e 3` fK±ti:r ,rj(Yk j 5f �n e <br /> x n + , r - s r "' Vis.as - <br /> X` w�i�r EwmM " ,s1'-.d�M r r`"U'.m -a� <br /> 'FT 7w l" ..iME— <br /> "T <br /> . '� ':YlNiI- c..:t'XFa-7"k Lu..�kY � '{, 1 ./i'.iE'M +,71-':C3iiLSiC>�.-...�.. <br /> �.�• .:t4. _ - f J#wrISMN �'�lu'wiiiula.d+ 'n.iilY <br /> Pr�p Z <br />��1vi�tiF� t <br /> Y . <br /> ky, <br /> y� <br /> f <br /> 3.2 SITE CONDITIONS <br /> A. GROUND WATER: <br />' The latest chemical results (sampled 11/27/90) indicate that <br /> dissolved benzene in monitor wells MW-2, MW--3, MW-4, MW-6, MW-8, <br /> MW-9 and MW-10 substantially exceeds the action level for drinking <br /> water of 1.0 ppb, set by the DHS, see Figures 5A and 5B. Monitor <br /> well MW-7 contains a lower benzene value of 8.5 ppb and monitor <br /> well MW5 is below the detection limit (<0.3) for benzene. Monitor <br /> well MW1 contained 0.081 of floating product. EDB concentrations <br /> were below reporting limits for all wells sampled on 5/4/89 (MW-1, <br /> MW-2, MW--4, MW-5, MW-6, MW-7, MW-8, and MW-9) so this analysis was <br /> not carried on. Complete water results are presented in TABLE 1 <br /> of this report. Strong to moderate bio-odors were also noted <br /> along with a grey green coloration of the purged ground water from <br /> monitor wells MW3, MW7, MW8, and MW10. <br /> 1 Monitor wells MW4, MW5, MW7 and MW8 were also analyzed for fecal <br /> coliform. These samples were place. into 500 ml plastic <br /> containers and hand delivered that day to Eureka Laboratories. <br /> Eureka used the Colilert method for Total Coliform and Fecal <br /> Analysis. All wells tested positive at the following results. <br /> jWELL RESULTS MPN/100 ml <br /> MW4 >16 <br /> MW >16 <br /> MW5 >16 <br /> MW8 >2400 <br /> The above results indicate that the ground dater at and near <br /> monitor well MW8 along the eastern edge of Pacific Blvd. , is <br /> contaminated with fecal coliform. <br /> B. SOIL: <br /> As has been shown in the "Update Status Report, February 23, 1990" <br /> soil contaminated with gasoline range hydrocarbons exists beneath <br /> the underground storage tank excavation from the 25 foot depth to <br /> top of ground water and at the 40 foot depth to top of ground <br /> water around monitor well MW10. The capillary fringe area (50 <br /> foot depth) shows the spread of contaminant out to monitor wells <br /> MW1, MW2 and MW3, see Table 2 and Figures 6A and 6B. <br /> 5 <br />