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Project No. 10-1768 AdvancedGeo M Employee-Owned Company Page 7 of 19 4.2. SPILL REPORTING - 40 CFR 112.7(a)(4) The discharge notification form included in Appendix D is completed upon immediate detection of a discharge and prior to reporting a spill to the proper notification contacts after evaluation by Facility Management and as applicable to limits described in Section 2.0. 4.3. POTENTIAL DISCHARGE VOLUMES AND DIRECTION OF FLOW - 40 CFR 112.7(b) Table 5 presents expected volume, discharge rate, general direction of flow in the event of equipment failure and means of secondary containment for different parts of the Facility where oil and/or petroleum fuel is stored, used or handled. 4.4. CONTAINMENT AND DIVERSIONARY STRUCTURES - 40 CFR 112.7(c) Methods of secondary containment at the Facility include a combination of structures (e.g., berms and built in secondary containment) and land-based spill response (e.g., booms or absorbents)to prevent oil and/or petroleum fuel from reaching navigable waters or adjoining shorelines. 4.4.1. Spill Pallets Each spill pallet has a minimum 110%, which can effectively contain the volume of any single 55-gallon drum. 4.4.2. Berm Enclosure The Facility uses a cinder block berm enclosure is provided around ASTs 1 through 5, located south of the fueling island. Additionally, a metal containment and concrete berm are provided around AST 13, located immediately east of the Main Shop Building. The berm enclosures and secondary containment are further described in section 5.2.2. 4.4.3. Transfer Areas Drip pans are placed under fill ports for the ASTs and used to catch leaks from the piping/hose connections. Spill kits are located inside the maintenance building near ASTs, next to the fueling islands, and near both diesel ASTs (Figure 4). The spill kits are positioned for rapid deployment should a spill occur, such as spills associated with overfills or hose rupture from the fuel dispenser. The response equipment inventory for the facility is listed in Appendix E of this Plan. The inventory is checked monthly to ensure that used material is replenished. Oil transfer procedures is included in Table 7.