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Spill Prevention, Control and Countermeasure Plan Tesla Treatment Facility Page 43 of 45 The tank integral of the transformer was tested during manufacturing and installation as per manufacturer recommendations. The transformer tank is bolt-on cover type designed such that access to the tank's interior is not needed unless a malfunction, leakage or other material repair is identified. Access to the storage tank interior requires not only removal of the tank cover but must be performed by certified technicians and requires the transformer to be de-energized, grounded and disconnected before the cover is removed and repairs or maintenance attempted. Fluid level, vacuum pressure and temperature sensors provide for monitoring and confirming the integrity of the transformer's integral tank. Internal inspection is performed whenever material repairs are made to the interior of the transformer. Internal inspections include checking for the proper setting and operation of gauges and controls; inspecting drain cocks, seals, fuse mountings and switches for evidence of insulating oil seepage; checking the tank's oil level, vacuum pressure, and temperature gauges; and checking for dirt or debris in and around the transformer. Inspection records are maintained in the Operations Building for a minimum of three (3) years. 4.4.2 Vehicles Entering Facility [40 CFR§112.12(d)(5)] Access to the substation transformer at the Electrical Building is controlled and limited by security fencing that encompasses the plant and security gates with controlled access. Vehicles entering the plant and headed to the substation transformer are accompanied and met by facility operators that monitor and control access, ensure proper clearance and safety precautions. Bollards mitigate potential vehicular incidents are available at the substation transformer. 4.5 Requirements for Onshore Facilities (40 CFR§112.13, 40 CFR§112.14 and 40 CFR§112.15) Because Section 40 CFR§112.13 applies to onshore oil production facilities, Section 40 CFR §112.14 applies to onshore oil drilling and workover facilities,and Section 40 CFR§112.15 applies to onshore oil drilling,production or workover facilities, these sections of the SPCC Rules are not applicable to the Tesla Treatment Facility.