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.� �. Harding ESE, Inc. <br /> c 10265 Rockingham Drive <br /> Harding ESE Suite 150 <br /> '"ice tlr,{{ Sacramento, CA 95827 <br /> A MACTEC Co�PANY tr +ff�f�f �r a+ Telephone: ' 9161364.0-793 <br /> C - <br /> -Al � � <br /> Fax: 916!364-5633 <br /> '?_ NICr Home Page: www.mactec.com <br /> 24 _. <br /> June 12, 2001 p <br /> 52822 l <br /> Michael J. Infurna, Senior REHS <br /> San Joaquin County Public Health Services <br /> Environmental Health Division <br /> 304 ,East Weber1 Th;nod -PIC cry <br /> Stockton, California 95202 <br /> Well Destruction <br /> Completed Supplemental Site Investigation (S" <br /> Tri Valley Growers Plant T G <br /> 26200 Nowell Road ! — --- <br /> Thornton, California <br /> Site Code 1920 <br /> s - <br /> Dear Mr. Infuma; <br /> On behalf of Tri Valley Growers (TVG), Harding <br /> Associates (HLA)) submits to the San Joaquin Ca <br /> Division (PHS/EHD) this report documenting the <br /> former underground storage tanks (USTs) located' - <br /> at 26200 Nowell Road in Thornton, California(Pl <br /> 9, 2001 PHS/EHD letter to TVG, which indicated:' " <br /> derived waste removed from the Site, prior to issu <br /> BACKGROUND <br /> Since 1987 several phases of investigation includil <br /> three hand auger borings by other consultants. In. <br /> Investigation (SST) that included advancing three soil borings and obtaining depth specific hydropunchrgrab <br /> groundwater sampling and subsequently the installation of one deep monitoring well (MW�7). The results of <br /> these investigations were summarized in the report entitled Closure Report(HLA, 1999). Monitoring well <br /> locations are shown on Plate 3. <br /> WELL DESTRUCTION <br /> Destruction of the wells was performed in accordance with the requirements of San Joaquin County Well <br /> Standards (Section 13.17.6, .12, and .13) and the State of California Well Standards Bulletins 74-81 and 74- <br /> 90 (Califomia, Department of Water Resources, 1981 and 1991). Michael Infurrna of the PHS/EHD was <br /> onsite to observe the.destruction activity. A copy of the well destruction permit is attached. On March 2, <br /> 2001, the on-site monitoring wells were destroyed by the following procedures. <br />