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hazardous waste landfill . Moreover, the amount of waste minimization <br /> between 1986 and 1987 indicated by the 1987 data for these top 15 <br /> large quantity generators is more than 59 percent. This is far more <br /> than the percentage calculated by using the Jacobs methodology. As <br /> has been acknowledged by the DHS, the waste minimization methodology <br /> (Jacobs) is aimed at large quantity generators in specific industrial <br /> areas. Most of the County's generators do not fit the profile for <br /> which the Jacobs methodology is structured. <br /> In addressing 'capacity needs for the County, it is important to <br /> consider contingency factors which have the potential to alter <br /> estimated waste generation patterns in the year 2000. Such factors <br /> require that a contingency be provided to compensate for unforeseen <br /> developments at the local or state level . Determining this <br /> contingency is difficult, but it can be based on the quantity of <br /> double-counted manifested waste. In Los Angeles County, for example, <br /> a contingency of 2,390 tons was assigned because 126,391 tons of <br /> imported wastes and 18,013 tons of transfer station wastes were <br /> double-counted. Because of a lack of transfer stations and the <br /> minimum quantity of wastes currently imported into the County, the <br /> contingency factor, in this instance, will probably not play a signif- <br /> icant role in altering the County' s projected waste generation totals. <br /> The following contingency factors may generate unexpected changes in <br /> future waste volume. First, OHS or the federal government could, by <br /> reclassification, render a group of wastes currently defined as <br /> "hazardous," nonhazardous, or vice versa. Several waste groups are <br /> especially susceptible to a change in classification: pretreatment <br /> sludges, auto-shredder waste, fluorescent light tubes/mercury vapor <br /> lamps, ethylene glycol/antifreeze, and combustion ash. Second, the <br /> influx to and departure from the County of industries will affect <br /> waste generation patterns, as will the rate of cleanup of contaminated <br /> sites. The latter is in turn dependent on the degree to which EPA and <br /> state officials enforce existing hazardous waste legislation. Third, <br /> the County may choose to participate in multicounty agreements wherein <br /> PJ9 9390502D.000 8-2 Rev. 1 11/08/88 <br />