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Sierra Chemical Co. RCRA Contingency Plan Corrosive Loading Areas All loading areas are designed as containment zones. Products include but are not limited to: • Sulfuric Acid • Hydrochloric acid • Sodium Bisulfite Aqueous • Aluminum Sulfate • Sodium Hypochlorite • Hydrofluorosilicic Acid • Sodium Hydroxide • Ferric Chloride Vard A variety of operations occurs throughout the Main Yard, including chemicals that have the potential to spill or release in the Yard due to loading/unloading of materials to vehicles. A majority of the chemicals are corrosive and may include those listed in the Corrosive Loading Areas. A list of the storage tanks and the various chemicals held within is located in Appendix J. Hazardous Waste Storage Areas Hazardous wastes are collected in one central accumulation area located on the production floor and include the following waste streams: • Oily solids with soil and absorbents, • Sodium hydroxide spill clean-up wastes, • Empty aerosol cans, • Full aerosol cans, • Sodium Hypochlorite Waste, • Fluorescent light bulbs, and • Hydrochloric acid spill clean-up wastes Oil is removed via offloading to an oil truck every 90 days. There is also one accumulation area located in the mechanic shop that stores oily rag waste, which is also removed every 90 days. In addition, there is one satellite accumulation area near the bleach containment area storing Non-RCRA bleach filters. The bleach filters are accumulated and eventually transferred to the central accumulation area so that the one year accumulation time limit is not exceeded. Excludable Recyclable Materials (ERMs) Sierra Chemical Co. offers for delivery many finished products to customers. Finished chlorinated and other hazardous products delivered may occasionally be rejected by customer due to minor defects, incorrect quantities, customer order error, or other minor defects. When this occurs, the customer typically requests to return the product that was originally provided to them. Since these chlorinated and other hazardous products may only be transported by a transporter with appropriate licensing, Sierra Chemical Co. will retrieve the product using a third party carrier licensed to transport such products such as Sierra Chemical's sister company, Circle Transport, located at the Stockton CA Facility. The approved carrier will transport product back to the Sierra Chemical Co. facility after obtaining a Return Material Authorization (RMA) from Sierra Chemical's customer service group. When a rejected product is retrieved from a client, Sierra Chemical Co. recycles the product as an ingredient into one of Prepared By: Issue date: Replaces: Page: ACT Environmental Services, Inc. Fehruary 25, 2016 NA 8 of 44