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ENVIRONMENTAL n ALTIf EPARTMEl® T <br /> Pp U I ly S AN J OAQ IN COUNT <br /> Unit Supervisors <br /> Donna K.Heran R.E.H.S. <br /> 304 East Weber venue, Third Floor earl Boins,R. R.E.H.S. <br /> .S.,R. <br /> { Director Mike Huggins,R.E.33.5.,R.D.1. <br /> :4 W= '• 95202-2708 <br /> Al Olsen,R.E.H.S. Stockton, Calif rnia <br /> .. Douglas W.Wilson,R.E.H.S. <br /> Program Manager Telephone: 09) 465-3420 Margaret Lagorio,R.E.H.S. <br /> 4�lFf] a <br /> Laurie A.Catulla,R.E.H.S. Robert McClellon,R.E.H.S, <br /> Program Manager Fax: (20 ) 464-0138 Mark Barcellos,R.E.H.S. <br /> JOSEPH ROKOSZEWSKI FEB 15 2005 <br /> R & L DIESEL SERVICE INC <br /> 2015 W HARDING WAY <br /> STOCKTON CA 95203 <br /> RE: R & L Diesel Service <br /> 2417 West Lane <br /> Stockton, CA <br /> San Joaquin County Environmental Health Department (EHD) has reviewed the work <br /> plan prepared by Environeering, Inc. dated January 28, 2005, to investigate the above <br /> referenced site. The work plan discusses investigation of two different areas at the site. <br /> One area is in front of a Parts Building where it is possible that two underground storage <br /> tanks (UST's) were operated prior to R & L Diesel purchasing the property. The work <br /> plan states that if there is evidence of the tanks that soil samples will be taken adjacent <br /> to the tanks and that the tanks will be closed in pla a or removed. Please be advised <br /> that if UST's are found that were not properly closed (filled with inert material),.they must <br /> be removed under permit and inspection of the EHID tank compliance unit. If the UST's <br /> were properly closed and you want EHD to provide a letter that states further <br /> investigation of the UST's is not required, then the ame type of investigation of this area <br /> is required as is required for the closed in place waste oil UST except sample analysis <br /> would be for unknown contents of the UST's. The analysis performed would include <br /> total petroleum hydrocarbons (TPH) as gasoline ar d diesel; benzene, toluene, ethyl_ <br /> benzene, xylene (BTEX); total lead, methyl"tert butyl ether (MTBE), tert butyl alcohol <br /> (TBA), diisopropyl ether (RIPE), ethyl tert butyl ether (EtBE) tertiary amyl methyl (TAME) <br /> using appropriate EPA Methods. <br /> The second area of investigation is beneath thewaste oil UST that was closed in place <br /> in April 1988. EHD does not agree with the proposed investigation and provides the <br /> following comments and concerns. <br /> 1. <br /> In correspondence from you to EHD dated Janua 14, 1987, you stated "we had <br /> Integrity Tank Testing perform a test on the tank, t ut upon filling the tank we found that it <br /> leaked at the top portion so we could not perform a complete test". Therefore, it is <br /> possible that there was an unauthorized release from this UST and that soil <br /> contamination may exist near the top of the UST as well as beneath the UST so soil <br /> samples should be collected and analyzed from near the top of the UST as well as from <br /> beneath the UST. <br />