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1 3.2 Soil Contamination <br /> Findings by Barber's study indicated non-detect levels of BTEX hydrocarbons in soil at <br /> boreholes C-1 and C-3 (excepting very low levels ethylbenzene and xylene (less than 0 015 <br /> mg/kg reported in C-3) as well as only trace amounts of ethylbenzene and xylene (less than <br /> 0 065 mg/kg reported in C-517) Contamination with heavier fractions (purgeable C6- <br /> C12) was found in soil between 25 and 40 FT bgs in boreholes C-2 and C-4/6, ranging <br /> upwards to 15,500 mg/kg and at 25 FT bgs in borehole C-517.A scaled and updated site <br /> 1 map with boring locations identified is attached as Figure 5 A compilation of all findings <br /> may be found in Table 1, "Summary of Laboratory Findings" <br /> ' Non-detect levels were reperted for soil samples from MW No 1 These samples were only <br /> collected for analyses below 35 FT bgs <br /> 13 3 Groundwater <br /> Groundwater was sampled when encountered in the boreholes and from the monitoring well <br /> on January 10 and March 30, 2001 While BTEX was only above 0 500 ug/L In Borehole C- <br /> 4/6, extraGiable hydrocarbons were identified in groundwater samples at boreholes C-1 - <br /> Q-3, C-4, C-5 and MW-1_ <br /> Additional "quarterly samples"were collected from the site's MW-1 on January 9 and April 11, <br /> 2002 with findings reported April 26, 2002 They may be found In attached Appendix I <br /> In summary; between 1 and 3 mg/L of an extractable, diesel like, petroleum <br /> hydrocarbon persists in the shallow groundwater at about 48 FT bgs. <br /> The groundwater gradient established from surrounding inactive irrigation wells slo ed at <br /> 9 9 gp <br /> ' 0 0092 and between December 2000 and April 2001 its direction had vaned by several <br /> degrees about N 5 deg E Historically, the ground-water flows to the north in this area <br /> Reported water level measurements' taken March 1 2002 of three surrounding g m onitonng <br /> wells supporting Victor Meat's remediation work were reviewed and found to substantiate the <br /> Northerly flow direction of the uppermost zone <br /> (N 2 deg E) at a current (3/01/02) gradient sloping downward at 0.002 FT/FT <br /> Foothill Engineering to CVRWQCB,Subt Monitoring Well Event Analysis Report and Site Examination, CVRWQCB Order No 5- <br /> 01-057(Victor Fine Meats} <br /> 1-5 <br />