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Site Name, County, Operating <br />Company: <br />Total Site Area (m2), <br />Freehold/leasehold/other: <br />Stockton, California, USA <br />United Storage <br />8,900 m2 <br />Freehold <br />Date of Construction: 1938 <br />Total Tanks Present & 32 <br />Storage Volume (m3): 27,871 m3 <br />Site Ref. No.: 31 <br />Page 10 of 10 <br />ISSUES FINDINGS IMPLICATION / CORRECTIVE <br />ACTION <br />painted. <br />Other previous reports and relevant According to Mr. Dale Matthews, reports were generated for the following known Verification information should be <br />findings environmental incidents: sought that tank removal, tank closure <br />A release of UN32 (a chemical fertilizer) occurred in the southern portion of the and spill clean-ups were performed to <br />property during in 1988. The soil in the area of the release was excavated and <br />disposed. The City of Stockton oversaw the excavation activities. Clean soil was <br />the satisfaction of local agencies. <br />backfilled into the excavation pit. The site was fined as a result of this release. A All information related to these <br />monitoring well was installed in the assumed downgradient position of the excavation incidents was provided by Mr. <br />area but the well was abandoned in 1994. Matthews. The final regulatory <br />A release of hydrochloric acid (HC1) fumes occurred from one of the ASTs in 1991. disposition for each of these incidents <br />The City of Stockton Fire Department responded to the fume release. A liquid HC1 was not confirmed by Arcadis as <br />release occurred during the response. The majority of HC1 volatilized. The remaining related reports and correspondence <br />liquid HC1 was cleaned up. The City of Stockton threatened to close the plant as a <br />result, but appropriate actions were t2ken and the site reorganised in 1992. <br />were not made available. <br />A 37,850 litre diesel UST was excavated and removed under guidance of Stockton <br />Fire Department prior to Mr. Matthews becoming Operations Manager in 1991. No <br />information was available for the UST removal. There is no indication in the <br />regulatory database provided by EDR, Inc., that a release had occurred from the UST. <br />During the construction of the truck weight scale in the northeast corner of the <br />property a 75,700 litre UST of unknown origin was uncovered. The UST was filled <br />with sand. The former contents of the UST are unknown. The tank was left in place <br />at the direction of the City of Stockton. <br />AMES " INC 916703113.doc