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s <br /> h <br /> Results Report and First Quarter 2001 Groundwater Monitoring Report <br /> Moore Petroleum Bulk Plant,5491 F street,Banta,California <br /> Page 5 <br /> Groundwater Sampling and Anal sis <br /> Apex personnel collected groundwater samples from all twelve existing wells, VEW-2, RW-2, ` <br /> and the off-site domestic well. The samples were submitted, under chain-of-custody, to CLS <br /> Labs of Rancho Cordova, California. All samples were collected according to the Apex SOP <br /> included in Appendix A. <br /> All samples were analyzed for concentrations of. a) TPH, as gasoline; TPH, as diesel; TPH, as <br /> kerosene; and TPH, as motor oil by modified EPA Method 8015; b) BTEX by EPA Method <br /> 8020; and c) five oxygenates by EPA Method 8260. The laboratory analytical report and chain- <br /> of-custody form are included in Appendix C. Analytical results are summarized in Table 3 and <br /> Table 4. <br /> All purged and recovered liquids are stored temporarily on site in Department of Transporta#4on- <br /> approved, 55-gallon drums pending removal from the site by a licensed hauler to an appropriate <br /> disposal facility. <br /> ` 1E <br /> CONCLUSIONS AND RECOMMENDATIONS <br /> Based on laboratory analytical results, soil has been impacted by petroleum hydrocarbons. <br /> Results for each boring is as follows: <br /> I <br /> • VEW-2: Contained the highest concentrations of analyzed constituents. TPHg was <br /> detected at 54 mg/kg, TPHd at 370 mg/kg and TPH motor oil at 87 mg/kg. BTEX <br /> was non-detect except for total xylenes at 4.3 ug/kg. <br /> • RW-2: The only detected constituents were TPHd at 2.6 mg/kg and MTBE at 29 <br /> mg/kg. <br /> • The composite sample had the highest concentration of TPHg at 130 mg/kg. TPHd <br /> was detected at 28 mg/kg and TPH motor oil at 4.4 mg/kg. BTEX was non-detect <br /> except for total xylenes at 3.3 mg/kg. <br /> 1 <br /> I <br /> EDB, 1,2-DCA, and the oxygenates (except MTBE in EW-2 @10') were non-detect in all 1 <br /> samples.. I <br /> Groundwater analytical results indicate shallow groundwater beneath the site has been impacted <br /> by petroleum hydrocarbons. MW-2, MW-5, and MW-6 were non-detect for all analyzed <br /> 4 constituents and TPH as kerosene and DIPE were non-detect in all analyzed samples. Results for <br /> wells with detectable concentrations are as follows: <br /> f <br />