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Collect Data on Hazardous Waste Data on hazardous waste manifested off-site,as well as hazardous wastewater effluents,may come from a variety of sources, including: • Hazardous waste manifests • Biennial hazardous waste generator reports • Wastewater flow records • Superfund Amendments and Reauthorization Act(SARA) Title III Section 313 environ- mental release reports • Environmental audit reports • Permits [RCRA Part B; National Pollutant Discharge Elimination System (NPDES);etc.] • Lab reports/characterization data • Chemical inventory and usage records • NPDES monitoring reports • Internal waste tracking system records • Production records �— These sources of information are helpful in calculating the total hazardous waste generated. They also provide valuable information such as hazardous characteristics and current(off-site as well as on-site) management methods. �! Another way for a large business to accumulate information or to supplement its collection is to �i. prepare a brief questionnaire for key departments,such as production, maintenance,and service, �? which are known or suspected to generate waste. A review of operator logs or production records may also provide useful information in calculating quantities of hazardous waste. from the requirements of SB 14. OPPGT considers requests on a case by case basis. How- ever, the documentation required to demonstrate that no practicable source reduction exists for a hazardous waste stream may be extensive. 2.4 Additional Considerations • When determining applicability of SB 14 at a site,a generator must include the weight of aqueous hazardous waste streams before pretreatment and discharge to a sewer. • In determining the applicability of SB 14(22 CCR Section 67100.2(a)), hazardous waste streams must be evaluated separately from extremely hazardous waste streams when comparing these waste streams to their respective applicability thresholds. For example, if the generator is above the i 2,000 kg threshold for hazardous waste,and above the 12 kg threshold for extremely hazardous waste,then both hazardous waste and extremely hazardous waste must be addressed as part of SB 14 planning and reporting. • A generator may manage wastes by a variety of strategies, such as transport off site for recycling, treatment or disposal; on-site treatment; or on-site recycling. • Do not double-count the waste. For onsite treatment of a hazardous waste, count only the hazardous waste influent entering the treatment unit and not any resulting hazardous waste residue or effluent leaving from the unit. 20