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Spill Prevention, Control and Countermeasure Plan Tesla Treatment Facility Page 16 of 45 The substation transformer on the south side of the Electrical Building is similarly located in a relatively flat area with low topographic relief and surfaced in part with concrete and pavement, and in part with pervious fill atop soil. Stormwater runoff and surface drainage is engineered to drain via the stormwater collection and conveyance system into the retention basin along the south side of the Tesla Treatment Facility. As is the case with the emergency power generation facility, spills or discharges at the substation transformer not captured by the transformer's housing and surrounding surface cover nor addressed by spill respondents,could potentially enter or impact the stormwater catch basin inlet located downslope of the facility and be diverted to the retention basin for drainage containment before potentially continuing offsite. The likelihood of a discharge from the emergency power generation facility or substation transformer escaping offsite is low given the daily inspection program performed by facility operators, availability of spill response materials and equipment onsite, and spill response training program provided to all facility operators at the Tesla Treatment Facility. 2.3.7 Countermeasures [40 CFR§112.7(a)(3)(iv)] In the unlikely event an oil spill or discharge escapes secondary containment, facility operators are trained to respond quickly and shut-down the affected equipment and stop the discharge, and then attempt to isolate the spilled product by using sorbents and other spill control materials. Spill containment kits, including absorbent and booms, are available for use by facility operators in the event of the discovery of leaking equipment. Depending on the size of the spill, facility operators will either clean up the spill using onsite resources, or otherwise contact the San Francisco Department of Public Health(SFDPH)to request outside assistance. Spill and cleanup records are kept in the Operations Building. SFDPH administers hazardous waste contracts for emergency cleanup operations and disposal of hazardous waste. SFDPH also files manifests and assists with Cal EPA registration. With respect to emergency response and clean-up, SFDPH has an emergency response hazardous materials unit. Appendix E provides an oil spill incident report form. Appendix F provides an inventory of spill response materials available onsite for use by facility operators and spill responders. 2.3.8 Methods of Disposal [40 CFR§112.7(a)(3)(v)] The disposal of all recovered spilled product, contaminated soil, used absorbent materials, and other spill response and cleanup materials is coordinated by the Chief Stationary Engineer in accordance to state and federal regulations, and the Hazardous Materials Business Plan for the Tesla Treatment Facility. Once a spill is discovered and stabilized if not contained by facility operators or spill respondents, the Chief Stationary Engineer is immediately contacted to that proper and timely containment, cleanup, recovery and waste disposal can proceed.