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process, the amount of Chemical X that is lost through the process vent on an annual basis can be estimated as follows: Input = Amount purchased (8,000 pounds) Output = Product (24,000 lbs x 25%) + waste (10,000 lbs x 15%) + process vent loss Input = Output 8,000 lbs Chemical X = 6,000 lbs + 1,500 lbs + process vent loss Process vent loss = 8,000 - 6,000 - 1,500 = 500 lbs Chemical X per year 3. Method E: Emission Factors published in the EPA document AP -42, or those al- ready approved by LRAPA, or those developed specifically for your facility, are all acceptable means of estimation of air emissions, unless monitoring data are available. AP -42, "Compilation of Air Pollutant Emission Factors," 5th edition, is available at: (1) LRAPA office, (2) University of Oregon library, or (3) on the In- ternet at http://www.epa.gov/ttn/chief/ap42/index.html. 4. Method O: When no data exist and document -driven estimation methods are not available, a business may use its best engineering judgment in calculating reportable quantities. When engineering calculations are appropriate, businesses are encouraged to consult EPA 560/4-88-002, "Estimating Releases and Waste Treatment Efficiencies for the Toxic Chemical Release Inventory Form," Dec. 1987.at http://nepis.epa.gov/Exe/ZyNET.exe/10003BA2.TXT?ZyActionD=ZyDocument &Client=EPA&Index=1986+Thru+1990&Docs=&Query=FNAME%3 D 1000313 A2.TXT%20or%20(%20Estimating%20or%20Releases%20and%20 Waste%20or %20Treatment%2Oor%2OEfficiencies%20or%20for%20or%20the%20or%2OToxi c%20or%20Chemical%20or%20Release%20or%20Inventory%20or%20Form)& Time=&EndTime=&SearchMethod=l&TocRestriet=n&Toc=&TocEntry=&QFiel d=&QFieldYear=&QFieldMonth=&QFieldDay=&UseQField=&IntQField0p=1 &ExtQField0p=1 &XmlQuery=&File=D%3A%5Czyfiles%5CIndex%20Data0/o5 C86thru90%5CTxt%5C00000002%5C 10003BA2.txt&User=ANONYMOU S&Pa ssword=anonymous&SortMethod=h%7C- &MaximumDocuments= l 0&FuzzyDegree=0&ImageQuality=r75g8/r75g8/x 150y 150g] 6/i425&Display=p%7Cf&DetSeekPage=x&SearchBack=ZyActionL&Back =ZyActionS&BackDesc=Results%20page&Maximum Pages=l &ZyEntry= l &See kPage=x&ZyPURL. This document is also available from National Technical Information Service, 5285 Port Royal Road, Springfield, VA 22161. The NTIS Accession Number is PB 88-210380. Use of Safetv Data Sheet (SDS) Information Information taken directly from a SDS is considered accurate for the purposes of reporting, unless the reporting company has more accurate information. -25 -