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i • Sierra Chemical Co. Hazardous Waste Management Plan • Contains concentrations of a constituent in excess of regulatory thresholds as identified in 40 CFR 261; • Is the waste a listed waste(P-list, U-list, F-list,and K-list);and/or • Is there reason to believe that the waste can cause,or significantly contribute,to an increase in mortality, increase in illness, irreversible effects, or poses a threat to human health and/or the environment? 3. If Sierra Chemical Co. is unsure whether a waste is hazardous,Sierra Chemical Co. shall send the material to a certified laboratory to determine if the material exhibits characteristics of hazardous waste. 4. If the waste is hazardous, based on your findings,determine the federal hazardous waste code or the California waste code. All waste streams, both hazardous and non-hazardous,generated by Sierra Chemical Co.are evaluated using the steps outlined below and the waste survey found in Appendix E.Various processes that occur onsite at Sierra Chemical Co. may generate spills and/or residues that are deemed hazardous waste. Some waste streams at Sierra Chemical Co. are produced through spills and cleanups that occur onsite. Outlined below is a table of these specific waste streams and the processes that generate this waste.All other wastes,as outlined in Table 2, are directly generated from specific activities. All hazardous waste determinations are managed and approved by the Plant Manager with the assistance of outside agencies,when required,such as consultants and certified laboratories. 5.3 Universal Waste According to Title 22 CCR Division 4.5 Chapter 23,the following waste streams may be managed as Universal Waste: • Electronic devices (includes any device with or without a Cathode Ray Tube (CRT), including TVs, computer monitors, cell phones,VCRs,computer CPUs and portable DVD players; • Batteries (nickel cadmium, alkaline,silver button, etc.); • Electric lamps (fluorescent tubes and bulbs, high-intensity discharge lamps,sodium vapor lamps and electric lamp that contain added mercury); • Mercury-containing equipment(thermostats, mercury switches,thermometers,etc.); • CRTs (glass picture tubes removed from devices such as televisions and computer monitors; • CRT glass (CRTs that have been accidentally broken or processed for recycling); and • Aerosol that have been completely emptied of all contents Sierra Chemical Co. generates waste from the following locations/operations on site.Table 4 identifies the locations and operations of the universal wastes generated. Table 3 Universal Wastes Process Generating Waste Light Bulbs General replacement/maintenance Aerosol Cans (Empty) Labeling containers Alkaline Batteries General use Prepared By: Issue date: Replaces: Page: ACT Environmental Services, Inc. May 12,2016 March 4,2016 12 of 27