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n (8) hazardous characteristics of the waste(s) that have been or will be handled, These materials are considered hazardous due to the material being waste oil which is regulated materials. These materials are considered hazardous and therefore must be provided secondary containment in compliance with CCR Title 22 §66265.192 or Chapter 15 Article 10. All inspected tank containments provide 110% containment of the largest volume contained. The tank used is designed to be compatible with the materials contained in the tank. Structurally, the system has sufficient strength and the foundations are adequately designed. Visual inspections of the secondary containment surface and steel structures on which the tanks sit and anchoring systems should be noted to ensure that there are no breaches of the tank system. (9) prior to placing a new tank system or component in use, an independent, qualified installation inspector or an independent, qualified, professional engineer, registered in California, either of whom is trained and experienced in the proper installation of tank systems, shall inspect the system or component for the presence of any of the following items and document in writing the results of the inspection: (A) weld cracks or breaks; (8) scrapes of protective coatings, (C) corrosion; (D) any structural damage or inadequate construction or installation such as cracks, punctures, damaged fittings. All discrepancies shall be documented in the assessment and remedied before the tank system is placed in use. Although MCG did not witness the installation of the tank system,based on current inspections it was installed in compliance with the requirement. There are currently no visible weld breaks, punctures or otherwise that could diminish the integrity of the system. (10) all new tanks and ancillary equipment shall be tested for tightness prior to being placed in use. The results of the test(s) shall be documented in this assessment. Tank system integrity or leak test requirements must be in compliance with all local requirements. Prior to conducting a tank system integrity test or leak test, contact local agency staff for local requirements. There has been no formal tightness testing of the tank system. The tank is open to the atmospheric pressure and leak detection is accomplished by an internal float level detection system with a float gauge mounted on top of the AST and visual observation of any potential liquid leaks into the secondary containment. The building acts a tertiary containment. (11) estimated remaining service life of the tank system based on findings of subsections (k)(1) through (k)(10). The tank system should maintain for at least another five (5) years. n Hazardous Waste Tank Assessment Report Martin Consulting Oil Stop,301 W. Kettleman Lane Page 12 of 29 Group,Inc.—Structural Design