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Input Types <br />The law specifies four different types of inputs of hazardous substances: <br />1. inventory at the facility at the beginningof the accountin., period: Report the <br />quantity of each substance that is on-site on January 1 in purchased or <br />manufactured condition. This does not include the quantity of a substance that is <br />considered waste waiting for treatment or disposal (see input type 2). For each <br />substance, this amount should be the same as the amount reported in output <br />type I I (inventory at the facility at the end of the accounting period) for the <br />previous year. <br />2. Waste stored at the facility at the beginning of the accounting period: Report the <br />quantity of the substance that is on-site on January 1 that is waste. This is the <br />portion of the substance that has been used in a manufacturing process and is <br />waiting for treatment or disposal. For each substance, this amount should be <br />the same as the amount reported in output type 4 (waste stored at the facility <br />at the end of the accounting period) for the previous year. <br />3. Quantity produced at the facility: Report the total quantity of the substance <br />produced by chemical processes on-site during the calendar year. The total <br />quantity includes material prepared in a production process whether as a final <br />product or as an isolated intermediate, and quantities generated as waste that were <br />not stored on-site on January 1 (Input 42). The quantities produced as transient, <br />non -isolated intermediates should not be reported. <br />4. Quanti , brought to the facility: Report the total quantity of the substance brought <br />into the facility from all off-site suppliers, including other facility locations and <br />divisions of your own company, during the calendar year. <br />Output Types <br />The law specifies 11 different types of outputs of hazardous substances: <br />1. Quantity chemically altered (consumed) in the facility's gee Appendix F, <br />processes: Chemically altered, or consumed, means Questions so <br />"undergoes a chemical reaction to produce a new and 62 <br />chemical." Reportable substances that are chemically <br />altered in manufacturing processes must be accounted <br />since they represent a reduction of the quantity present. Reportable substances <br />generated during chemical alteration of another substance must be reported as <br />inputs of type 3 in the section above. <br />Transient intermediates, those compounds that are produced and then fully <br />consumed in a continuous process, even if on the list of reportable hazardous <br />substances, are not reportable. <br />Businesses may choose average yields of reactions performed at the facility for <br />the purposes of calculating quantities chemically altered, and apportioning the <br />product to other output types (e.g., between product and waste). <br />-20- <br />