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Photos of the repainted tank are provided in Appendix A. 2.6 Spill Prevention or Overfill Eauipment 122 CCR & 66265.191(e)(6)1 As discussed in Section 2.2, the used oil enters the tank through a metal storage container with a shelf on which the used oil filters sit and drain oil through a funnel into the tank. Because the funnel is in direct contact with the tank, there is no pathway for the used oil to spill out of the tank. A dipstick is used to measure the level of oil in the tank. The tank is routinely monitored. In addition, the tank is located in the petroleum product storage area, which is a fully contained concrete walled basin and provides secondary containment for the tank. The dimensions ofthe basin are 39 -feet by 39 -feet and the wall is 2 -ft high. The total containment volume is 3042 square feet or approximately 22,800 gallons. This secondary containment volume far exceeds the capacity of the 250 gallon tank. The concrete basin is constructed of materials that are compatible with the used oil. The basin is sloped to drain to the west with two drain ports located on the western side. The drain ports are equipped with valves to open and close the ports, as necessary. Leak detection is by routine visual observation. The secondary containment prevents migration of wastes or accumulated liquids out of the system to the soil, ground water or surface water at any time during use of the tank. The secondary containment is capable of detecting and collecting releases and accumulated liquids through visual inspection until the material is removed. 2.7 Hazardous Characteristics of Waste 122 CCR E 66265.191(e)(7)l The tank is used to temporarily store used motor oil from maintenance of the onsite equipment. In accordance with the California Health and Safety Code (HSC) Section 25250. 1, used oil is classified as "any oil that has been refined from crude oil, or any synthetic oil, that has been used, and, as a result of use or as a consequence of extended storage or spillage, has been contaminated by physical or chemical impurities" HSC Section 25250.4 requires that used oil be managed as a hazardous waste in California unless it has been recycled and is shown to meet the specifications for recycled oil in HSC 25250.1 (b), or qualifies for a recycling exclusion under HSC 25143.2. HSC Section 25143.2(b) states that recyclable material that is managed in accordance with Section 25143.92 and is or will be recycled by any of the listed methods shall be excluded from classification as a waste. The listed methods include items such as used or reused as an ingredient in an industrial 2 Health and Safety Code Section 25143.9 lists requirements for management ofthe material. These requirements include that the material is being held in a container or tank with appropriate labeling, that the business location has a business plan that includes an emergency response plan, and that the material is stored and handled in accordance with all local ordinances and codes (i.e. fire codes). 0 0