SITE INFORMATION AND CORRESPONDENCE

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HEALIIi GROUND ZERt ANALYSIS, INC. 1714 Main Street 2 Escalon, California 95320-1927 Telephone: (209) 838-9888 Facsimile: (209) 838-9883 December 4, 2003 Ms. Lori Duncan San Joaquin County Public Health Services Environmental Health Division 304 East Weber Avenue, Third Floor Stockton, CA 95202 Subject: Drilling Permit Application 5151 Almondwood Drive,Manteca, California Dear Ms. Duncan: Enclosed herewith is a completed drilling permit application and associated fees in accordance with the October 3, 2003 workplan submitted to San Joaquin County Public Health Services Environmental Health Division(EI-ID) for additional investigation at the subject site. The workplan was approved in your letter dated October 16, 2003. Ground Zero contacted the drilling contractor, Fisch Environunental, on November 14, 2003 to schedule the drilling. The earliest possible drilling date for the required rig was during the week of January 12, 2004. Ground Zero has tentatively scheduled the drilling to be conducted January 12-13, 2004. Fisch Environmental can be reached at 209-772-3570. Ground Zero would like to clarify issues raised in EHD's October 16 letter pertaining to a reported minor soil excavation and handling of the soil stockpile. Ground Zero was not involved in the removal of the Underground storage tank (UST) in February 1999. When Ground Zero initially observed the site in October 1999 a small soil stockpile was located adjacent to the UST excavation. When contacted, the UST removal contractor indicated that they typically remove soil around the UST, including fill and native material to approximately two feet below the bottom of the fill material. Thus Ground Zero reported in correspondence dated October 3, 2002 that "the tank removal and minor overexcavation have removed the contamination source from the soil." The soil stockpile was previously illustrated on site maps in previous reports dated March 23, 2000, August 11,2000, and April 18,2001. During well installation activities in January 2001, the soil cuttings from the boreholes were placed on the existing soil stockpile and covered with plastic. As reported in the Well Installation Summary Report dated April 18, 2001, "No TPHG or BTEX was detected in the 4:1 composite soil sample collected from the stockpiled soil." Thus, Ground Zero recommended that the soil waste pile be disposed of by spreading on site. It should be noted that the initial soil stockpile sample collected at the time of the tank removal on February 5, 1999 contained only 0.31 parts per million