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quantity generators (those who produce less than 100 kg per month) <br /> represent three quarters of the generators but only twenty percent of <br /> the waste. "Used oil factors" must be applied to businesses <br /> accordingly. <br /> There are no records of the waste management practices of County SQGs. <br /> The EPA/Abt study, however, made the following observations about <br /> national SQGs. These conclusions may be applicable to County SQGs and <br /> useful in the CHWMP process. <br /> • Seventy percent of the small quantity generators, ac- <br /> counting for over 80 percent of the waste, ship their <br /> waste off-site. Off-site management is dominated by <br /> recycling (largely of lead-acid batteries) : two thirds <br /> of the SQGs who ship their waste off-site send it to <br /> recycling facilities. An estimated 5 percent of the <br /> generators who ship their waste send it to RCRA hazardous <br /> waste facilities, and the remainder, which do not recy- <br /> cle, send their waste to solid waste facilities, (i .e. , <br /> sanitary landfills or incinerators) or do not know the <br /> ultimate destination of their waste. About one third of <br /> the generators provide written notification of the nature <br /> of their waste to transporters, with about 6 percent <br /> using EPA manifests. <br /> • Approximately 20 percent of the small quantity generators <br /> manage their waste on-site, and 10 percent both manage <br /> their waste on site and ship it to an off-site facility <br /> (i .e. , on-site treatment followed by off-site disposal) . <br /> On-site management is dominated by RCRA-exempt disposal <br /> to public sewers, which is practiced by about 45 percent <br /> of these generators. <br /> Discharge to public sewers must be in accordance with all <br /> applicable federal , state, and local regulations. Dis- <br /> charges to publicly-owned treatment works (POTWs) are <br /> regulated under the Clean Water Act. In 1986, an EPA <br /> study was performed to evaluate the quantities and <br /> impacts of hazardous wastes 'discharged to POTWs (EggDLt <br /> o Conaress Qn—the Discharg-e of Hazardous Wastes to <br /> ublicly-Owned Treatment Works, EPA/530-SW-86-004) . <br /> As a result of this study, EPA recommended that the RCRA <br /> exemption for POTW discharges be retained because exist- <br /> ing Clean Water Act regulations with certain improvements <br /> should be able to effectively regulate these waste <br /> PJ9 9390502D.00D 5-10 Rev. 1 11/08/88 <br />