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Used Oil Tank Containment Integrity Report For HMT Inspection Tracy Express Carwash & Lube Tracy, CA January 17,2019 Pae 14 of 34 3.1 CONTAINMENT ASSESSMENT AND EVALUATION We have evaluated the tank containment and find the following to be true: The steel tank containment has now and will continue to contain liquids that can be classified as non-RCRA hazardous materials. The following assessment details are known or have been evaluated for the tank: 1. Pursuant to 22 CCR §66265.193(b)(1); The secondary containment (secondary tank) is designed and constructed such that it will contain any minor leak of stored liquid until it can be properly cleaned; 2. Pursuant to 22 CCR §66265.193(b)(2); The secondary containment has been designed to accepted industry practice for total storage volume and may temporarily retain these non-RCRA hazardous materials until such leaks or spills are detected and cleaned up; 3. Pursuant to 22 CCR §66265.193(c)(1); The concrete containment slab under the tanks is adequately constructed according to accepted industry practice and supports the Used Oil Tank as required; 4. Pursuant to 22 CCR §66265.193(c)(2); The concrete containment slab under the tank is properly designed and of suitable strength and thickness; 5. Pursuant to 22 CCR §66265.193(c)(3) and (4); The hazardous materials action plan currently in place at the facility provides that any leakage or spills from the tank in this area will be cleaned as soon as detected (visual inspection of this area is performed by the operators responsible for this operations area); 6. Pursuant to 22 CCR §66265.193(e)(1)(A); This secondary containment tank is not directly exposed to the weather (situated inside a building); 7. There is direct no direct exposure to normal weathering environment; 23264311 Used Oil Tank-DTSC Report r4(Rev 0) 2/7/2019 2:38 PM