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under the Resource Conservation and Recovery Act (RCRA); (2) expected <br /> to generate hazardous waste regulated under RCRA; and (3) expected to <br /> contain a significant number of small quantity generators. Based on a <br /> review of industry groups, classified by Standard Industrial Classifi - <br /> cation (SIC) codes, 125 SIC codes were chosen for inclusion in the <br /> survey. The 125 SIC codes included were combined into 22 larger <br /> industry groups in order to develop a framework for the survey analy- <br /> sis. These groupings were determined primarily according to the types <br /> of waste which the establishments in each SIC code were expected to <br /> generate, and secondarily according to the services delivered or goods <br /> produced by the establishments. For example, establishments in SIC <br /> codes 7332, 7333, 7395 and 8411 were grouped together because they <br /> were expected to produce photographic waste, solutions or sludges <br /> containing silver, ignitable wastes, spent solvents, and paint wastes. <br /> Based on a list of County businesses categorized by SIC code the <br /> number of firms under each of the 22 industry groups was calculated. <br /> In order to calculate the total amount of tonnage of hazardous waste <br /> generated by, each industry group, the total number of businesses in <br /> each group was multiplied by a "total volume production factor per <br /> generator. " The volume of specific waste types generated by each <br /> industry group was calculated by multiplying the total metric tonnage <br /> by a predetermined percentage for each waste type. These factors are r <br /> based on the results of the Abt Associates study. <br /> A method for determining waste oil generation was not included in the <br /> EPA/Abt Associates' SQG calculations because EPA does not categorize ` <br /> waste oil as a hazardous waste. The Agency has granted a variance for <br /> waste oil . SQG waste oil generation must be estimated in accordance <br /> with OHS-recommended procedures. The method required applying a "used <br /> oil factor" to the number of businesses in each of several categories <br /> of automotive and industrial businesses. These businesses typically <br /> generate waste oil at a certain rate per year. The DHS method was <br /> modified to accommodate information provided in the EPA/NGT study. ■ <br /> That study found that among small quantity generators, very small <br /> PJ9 9390502D.000 5-9 Rev. 1 11/08/88 <br /> r <br /> r <br />