Where A i is the intensity of activity i and η j is the efficiency of the emission control measure j implemented for activity i.. For the case of open-pit coal mining operations, the TSP and PM 10 emission factors reported by the USEPA were obtained through various experimental studies carried out in mining areas in USA by the Western Institute (Axetell 1978; Axetell and …
Particulate Matter (PM) Emission Factors For Processes/Equipment at Asphalt, Cement, Concrete, and Aggregate Product Plants ... are not published in the EPA AP-42. These emission factors are determined using the agreed control efficiencies that were established ... For mining/quarrying, emission factor is expressed in pound per blast (lbs ...
The emissions factors have been developed and compiled from source test data, material balance studies, and engineering estimates. The Fifth Edition of AP-42 was published in January 1995. Since then EPA has published supplements and updates to the fifteen chapters available in Volume I, Stationary Point and Area Sources. The latest emissions ...
AP-42, Compilation of Air Pollutant Emission Factors, has been published since 1972 as the primary compilation of EPA's emission factor information. It contains emission factors and …
EMISSION FACTOR DOCUMENTATION FOR AP-42 SECTION 11.20 (Formerly 8.25) Lightweight Aggregate Manufacturing 1. INTRODUCTION ... The production of lightweight aggregate begins with mining or quarrying the raw material. ... Emissions from the production of lightweight aggregate consist primarily of particulate matter (PM), which is emitted by the ...
Emissions Factors & Policy Applications Center Emissions Factors & AP 42 Technology Transfer Network Clearinghouse for Inventories & Emissions Factors Recent Additions | Contact Us Search: All EPA This Area Emissions Factors & AP 42, Compilation of Air Pollutant Emission Factors An emissions factor is a representative value that attempts to ...
AP-42 emission factors and associated PM2.5 / PM10 ratios. This study was sponsored by the Western Regional Air Partnership. The study found that concentration measurements used to develop PM2.5 emission factors in AP-42 were biased high by a factor of two, as compared to PM2.5 measurements from FRM samplers. This factor-of-two bias helps to ...
Emissions from the production of lightweight aggregate consist primarily of particulate matter (PM), which is emitted by the rotary kilns, clinker coolers, and crushing, screening, and …
13.2.4 Aggregate Handling and Storage Piles. Final Section - November 2006 (PDF) (6 pp, 50 K) Background Document for Revisions to Fine Fraction Ratios Used for AP-42 Fugitive Dust Emission Factors - November 2006 (PDF) (15 pp, 146 K) Related Information; 13.2.5 Industrial Wind Erosion. Final Section - November 2006 (PDF) (15 pp, 185 K)
aggregate feed is less than 74 µm (minus 200 mesh). Fugitive dust that may escape collection before primary control generally consists of PM with 50 to 70 percent of the total mass less than 74 µm. Uncontrolled PM emission factors for various types of …
The moisture content for the aggregate of 1.77% and sand of 4.17% (AP-42 Section 11.12, Table 11.12-2, Footnote b). The weighted average moisture content for sand and aggregate is 2.65% ((1.77 * 213.75 + ... Factors, Volume I: Stationary Point and Area Sources, Fifth Edition, Section 11.12 (06/06), Table 11.12-2. PM 2.5 emission factor for ...
Standardized PM10 emission factors were assigned to each classification based on the expected annual average particle size distributions and moisture contents. Predetermined fugitive dust …
Emission factors are based upon an equation from AP-42, section 13.2.4 Aggregate Handling And Storage Piles, equation 1 with kPM-10 =.35, kPM = .74, U = 10mph, Maggregate =1.77%, and Msand ... d The controlled PM emission factor was developed from Reference 10 and Reference 12, whereas the
A variety of material, equipment, and operating factors can influence emissions from crushing. These factors include (1) stone type, (2) feed size and distribution, (3) moisture content, (4) …
Table 3-l. The results of the PM10 emission tests are presented in Table l-l. The emission rates determined during both series of tests were low. The very low wet stone emission factor results are entirely consistent with the zero visible emissions observed during all of the tests. Stone samples obtained
This document provides emission factors for estimating total suspended particulate matter (PM) emissions (not PM10) for individual emission source at aggregate (sand and gravel), brick and …
USEPA for this purpose. However, there are disputes over the specific emission factors that must be used for each activity and the applicability of such factors to cases quite different to the ones under which they were obtained. There is also a need for. particulate matter with an aerodynamic less than 10 µm diameter . 10) emission (PM
wet drilling PM10 emission factor is based on information published in Section 11.19.2 of AP-42 (1/95) for crushed stone processing operations. The blasting procedure is based on an emission estimation technique provided in Section 11.9.2 of AP-42 (Reformatted 1/95) for coal or overburden. A PM10 fraction of 52% is assumed for blasting emissions.
1. Identify and review the AP-42 section dealing with that process. 2. Obtain the uncontrolled particulate emission factor for the process from the main text of AP-42, and calculate uncontrolled total particulate emissions. 3. Obtain the category number of the appropriate generic particle size distribution from Table B.2-1. 4.
Analysis of the Fine Fraction of Particulate Matter in Fugitive Dust. (PDF 1.3M) Final Report for Western Governors' Association Western Regional Air Partnership (WRAP). ... 13.2.2 Unpaved Roads, 13.2.4 Aggregate Handling and Storage Piles, and 13.2.5 Industrial Wind Erosion. March 22, 2006. ... AP 42 Emissions Factors by Chapter. Area ...
The sulfur dioxide emission factor was shown as 0.087 lb/ton of total feed charged. The conversion was incorrect. The factor was corrected to 0.87 lb/ton. Background Document …
This section provides a compilation of various particulate matter emission factors for common processes in the mining industry. It includes emission factors and their …
Errata - January 3, 2007: Table 11.18-4 has been updated. The sulfur dioxide emission factor was shown as 0.087 lb/ton of total feed charged. The conversion was incorrect. The factor was corrected to 0.87 lb/ton. Background Document (PDF) (23 pp, 129 K) 11.19 Introduction to Construction and Aggregate Processing
11.9-6 EMISSION FACTORS 7/98 Table 11.9-1 (cont.). d Multiply the #15-µm equation by this fraction to determine emissions, except as noted. e Multiply the TSP predictive equation by this fraction to determine emissions. f Blasting factor taken from a reexamination of field test data reported in Reference 1. See Reference 4. g To estimate emissions from traffic on unpaved …
An emission factor relates the quantity (weight) of pollutants emitted to a unit of activity of the source. The uses for the emission factors reported in AP-42 include: 1. Estimates of areawide emissions; 2. Estimates of emissions for a specific facility; and 3. Evaluation of emissions relative to ambient air quality.
Emission factors for total particulate matter (TPM), particulate matter ... activity data and emission factors for estimating fugitive particulates from the aggregate mining and rock quarrying (AMEC Earth ... Chapter 11, Mineral Products Industry, section 11.9: Western Surface Coal Mining. Available on-line at: AP 42 11.9 Western Surface ...
Emissions factors are used in developing air emissions inventories for air quality management decisions and in developing emissions control strategies. This area provides technical information on and support for the use of emissions factors. ... Air Emission Factors / AP-42 ... TANKS, SPECIATE, LandGEM, WATER9, PM Augmentation Tool;
AP-42 is routinely updated by EPA to respond to new emission factor needs of EPA, State, and local air pollution control programs and industry. An emission factor relates the quantity (weight) of pollutants emitted to a unit of activity of the source. The uses for the emission factors reported in AP-42 include: 1. Estimates of areawide ...
Emission Factor Documentation for AP-42 Section 11.12 Concrete Batching Office of Air Quality Planning and Standards Office of Air and Radiation