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Aboveground Storage Tank Integrity Assessment Report CANEPA'S LUBE & OIL 6220 Pacific Avenue, Stockton, California 1.0. INTRODUCTION AND PURPOSE At the request of Canepa's Lube & Oil (Facility) located at 6220 Pacific Avenue, Stockton, Advanced GeoEnviron mental has prepared this Aboveground Storage Tank Integrity Assessment Report to evaluate the condition of the waste oil tank used at the Facility. Additionally, this assessment addresses compliance issues with aboveground storage tank (AST) requirements for use as a vessel for temporary storage and accumulation of the waste oil from Facility industrial activity. The Facility location map is included as Figure 1. The Facility site map is included as Figure 2. Figure 3 shows the top and east side view of the AST. The professional engineer AST assessment certification is included after the title page. Specific sections of the assessment are also certified in Table 1. 2.0. TANK ASSESSMENT On 15 January 2019, the performance of a visual inspection and hydrostatic pressure test was performed on the 1,000-gallon waste oil AST located at the Facility. Below is a detail description of the AST manufacturing specifications and visual characteristics. 2.1. TANK DESCRIPTION The tank is a 1,00-gallon double walled AST, with the outer shell having a 110% containment capacity of the inner tank. The AST description is included in Table 2 and AST manufacturer specification and technical drawings are included in Appendix A. 2.1.1. Tank Name and Markings The AST is identified by site personnel as the waste oil tank. There are labels clearly legible on the north side of the AST, including the following: • Emergency Vent Secondary • No Smoking • Used Oil "Waste Hauler Pickup Dates" • Waste Evac • Used Oil Only 2.1.2. Tank Age and Remaining Service Life — 22 CCR § 66265.192 (k)(3), (11) The AST was installed after the original underground storage tank was removed from the site in 1999. The age of this AST is estimated at 20 years, while the remaining service life is estimated at 10 to 15 years. Additional AST specifications are included in Table 2.