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APR 2005 <br /> ENVRGNNiAT NEAUN <br /> ////7APEX PERJA0l f/SE.,lv10E <br /> 11244 Pyrites Way•Gold River,CA 95610 <br /> E N V I R 0 T E C N , I N C . Phone 91 6,851.0174 • Fax 916.851.0111• Toll Free 1.800,242.5249 <br /> April 5, 2005 <br /> Mr. Nuel Henderson / <br /> San Joaquin County Environmental Health Department <br /> 304 E. Weber Avenue, Third Floor <br /> Stockton, California-95202 <br /> Subject: Addendum Interim Results Report for Ozone Sparge Well Installation <br /> Moore Petroleum Bulk Plant <br /> 5491 F Street, Banta, California <br /> Apex Project#ERA02.004 <br /> Dear Mr. Henderson: <br /> Apex Envirotech, Inc. (Apex), has been authorized by Moore Petroleum (Moore) to provide this <br /> addendum to the previously submitted results report,Interim Results Report for Ozone Sparge <br /> Well Installation dated February, 2005,documenting groundwater sampling conducted from the <br /> four offsite ozone sparge wells (OS-2 through OS-5) on December 9, 2004. The sparge points <br /> were sampled for groundwater in accordance with the Apex Standard Operating Procedures <br /> (SOP) (Figure 1 and 2). Groundwater samples were submitted for chemical analysis under <br /> chain-of-custody documentation to California Laboratory Services of Rancho Cordova, <br /> California, a state-certified Iaboratory(Appendix B). Groundwater results are shown in Table 1. <br /> A summary of analytes and analytical methods used is shown below. <br /> Analysis Abbreviation Designation USEPA Method No. <br /> Total Petroleum Hydrocarbons TPHg <br /> as Gasoline <br /> Total Petroleum Hydrocarbons TPHd Gas/Diesel- <br /> as Diesel <br /> Total Petroleum Hydrocarbons Range 8015 Modified <br /> as Kerosene Kerosene Hydrocarbons <br /> Total Petroleum Hydrocarbons TPHmo <br /> as Motor Oil <br /> Benzene <br /> Toluene Aromatic <br /> Eth (benzene BTEX Volatile 8021 <br /> Xylenes (Total) Organics <br /> Tertiary Butyl Alcohol TBA <br /> Methyl Tertiwy Butyl Ether MTBE <br /> Di-isopropyl Ether DlPE Five Fuel 8260$ <br /> Ethyl TertiaryButyl Ether ETRE Oxygenates <br /> Tertiary Amy[ Methyl Ether TAME <br />