AP-42 emission factors are useful for estimating emissions from an air pollutant source However the factors are averages obtained from a wide range of data with varying degrees of accuracy Emissions calculated using AP-42 emission factors are likely to be different from a facility's actual emissions This study assesses dust emission and dispersion from crushing in open-pit quarries Measurements were conducted in six aggregate quarries labelled from 1 to 6 where the crusher is assumed to be the most significant source of dust Measurements were made under real operating conditions with optical measurement device

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AIR POLLUTION CONTROL IN THE CEMENT INDUSTRY by Russell E Hailstone Technical Director General Portland Cement Company Dallas Texas Portland cement manufacturing plants - both old and new - located in congested and sparsely populated areas of the country have for many years installed the most modern and efficient emission control

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2/29/2016 3 Developing a Dust Control Plan • Conduct a Site Survey –listing all the dust sources on the property • Estimate Uncontrolled Dust Emissions – using EPA AP-42 "Compilationof Emission Factors" • Specify RACM (Reasonably Available Control Measures) – appropriate for your facility for each source • Estimate Controlled Dust Emissions – set a goal for control

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The crushing operation has a water spray system to control the emissions of fugitive dust EMISSION CALCULATIONS Emission rates for the crusher generator were calculated using USEPA AP-42 (5 th Edition 1/95) Section 3 4 Large Stationary Diesel and All Stationary Duel-Fuel Engines (updated 10/96) Emission rates for all pollutants except NOx

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Crushing Emission Factor is utilized as a conservative estimate because there is no Primary Crushing Emission Factor Additionally the use of AP-42 Chapter 11 19 2-2 Controlled Emission Factors is allowed as described in the BAPC AP-42 Chapter 11 19 2 Emission Factor Decision Tree Finally multipliers for PM 2 5 are based on AP-42 Chapter 13 2 4

Particulate Matter (PM) Emission Calculations

AP-42 Emission Factors Stone Crushing Spreadsheet Input General Information Note the tabs on the bottom of the booth is exhausted to the dust collector (the other 2/3 drops to the floor in the booth) • 1200 lb/hr x 8760 hour/yr / 2000 lb/ton x 0 3= 1576 8

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of dust on vegetation can abrade plant surfaces and bury organisms and photosynthetic organs [4] simulation of fugitive dust emissions and control measures in the stone crushing industry Singh et al The AP-42 Dust Emission Estimation method is based on the AP-42 EF estimation Equations

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----- FUGITIVE EMISSIONS AND FUGITIVE DUST EMISSIONS Introduction and Purpose This paper has been prepared to define the differences between and discuss pertinent facts concerning two separate but in some cases strikingly similar air pollution problems i e fugitive emissions and fugitive dust

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