unpaved road ap 42

  • Particulate dust emission factors from unpaved roads in .

    Particulate dust emission factors from unpaved roads in .

    Factors that influence the magnitude of dust emissions include the condition of a road surface, the surface material silt and moisture content, the volume and speed of traffic and the vehicle weight. The U.S. EPA developed a methodology (i.e. AP-42) and emission factors for PM 10 (particles with diameter < 10 μm) from unpaved road . The .

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  • EIIP particulate emissions: Fugitive Dust from Unpaved Road

    EIIP particulate emissions: Fugitive Dust from Unpaved Road

    precipitation (P). (See AP-42, Section 13.2.2) • The monthly PM 10 emission factors are multiplied by the monthly vehicle miles traveled (VMT) for unpaved roads. • The equation and equation constants are discussed in Section 4.8.1.4 in the National Air Pollutant Emissions Trends Procedures Document for .

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  • MICHIGAN DEPARTMENT OF ENVIRONMENTAL QUALITY

    MICHIGAN DEPARTMENT OF ENVIRONMENTAL QUALITY

    Section 13.2.2, Fugitive Dust Sources – Unpaved Roads, of the EPA Compilation of Air Pollutant Emission Factors AP-42 1995 (AP-42) unpaved road equation presently used to calculate Ev for the PSIC has been updated. AP-42 now includes two newer (2003) unpaved road equations, plus it includes a new equation for paved roads. There are several

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  • Wind-induced dust-PM emission coefficient for dirt and .

    Wind-induced dust-PM emission coefficient for dirt and .

    The AP-42 document includes an equation for PM emission from unpaved road in relation to transport of vehicles on the road. However, roads are subjected also to wind-induced dust emission. This study examines both processes in controlled generic soil.

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  • APPENDIX G: AIR QUALITY DATA SHEETS LAND AREA .

    APPENDIX G: AIR QUALITY DATA SHEETS LAND AREA .

    road traffic assumptions for the timber harvest vehicles are presented in Table G-2 Additionally, unpaved road emissions were calculated for timber harvest. Uncontrolled unpaved road dust emission factors were calculated using information from AP-42 Section 13.2, using the following equation: E = k (s/12)a (W/3)b / (M/0.2)c [365 – p/365]

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  • Paved Road Area Source Category Calculation .

    Paved Road Area Source Category Calculation .

    The methodology is based on an equation from AP-42 to calculate PM emission factors from re-entrained road dust on unpaved roads. The particulate emissions from vehicle exhaust, brake wear and tire wear are estimated separately in MOBILE 6.2 for publicly accessible unpaved roads.

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  • ec.gc.ca

    ec.gc.ca

    Typical Silt Content AP-42 Facility Information Instructions Introduction This calculation is done for a given unpaved segment road in the facility. If the facility has other segment roads, save the calculation for this given segment road and do the other calculations segment by segment. The meteorological data will remain unchanged. References

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  • Emission Factor Documentation for AP-42, Section 13.2.1 .

    Emission Factor Documentation for AP-42, Section 13.2.1 .

    Emission Factor Documentation for AP-42, Section 13.2.1 Paved Roads . March 8, 1993. Emission Factor Documentation for AP-42, Section 13.2.1 Paved Roads For Emission Factors and Inventory Group Office of Air Quality Planning and Standards U.S. Environmental Protection Agency . and the road is better characterized as unpaved in nature rather .

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  • Chapter 6. Unpaved Roads - wrapair

    Chapter 6. Unpaved Roads - wrapair

    Jun 10, 2004 · when addressing a group of unpaved roads, it is necessary that reliable correction parameter values be determined for the road in question. The field and laboratory procedures for determining road surface silt and moisture contents are given in Appendices C.1 and C.2 of AP-42. Vehicle-related parameters should be developed by

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  • Local Unpaved Road Surface Management in Indiana

    Local Unpaved Road Surface Management in Indiana

    Local Unpaved Road Surface Management in Indiana John D. N. Riverson Post-Doctoral Research Associate School of Civil Engineering Purdue University INTRODUCTION The term "unpaved" describes road surfaces of natural earth, unim­

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  • Effect of vehicle characteristics on unpaved road dust .

    Effect of vehicle characteristics on unpaved road dust .

    Effect of vehicle characteristics on unpaved road dust emissions. . In comparison to emission estimates derived using US EPA AP-42 methods the measured emission factors indicate larger than estimated contributions for speeds generally>10–20 km h −1 and for vehicle weights>3000 kg. The size of a wake created by a vehicle was observed to be .

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  • Maricopa County Air Quality Department EmissionsInventory .

    Maricopa County Air Quality Department EmissionsInventory .

    Emissions Inventory Help Sheet for Vehicle Travel on Unpaved Roads . "Compilation of Air Pollutant Emission Factors: Volume I: Stationary Point and Area Sources" (AP-42), fifth ed. Section 13.2.2. Maricopa County Air Quality Department Emissions Inventory Unit 2018 . unpaved road travel, ^ ^ -duty vehicles @ mph 3- Stack ID(s) .

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  • Emission Factor Documentation for AP-42 Section 13.2.2 .

    Emission Factor Documentation for AP-42 Section 13.2.2 .

    The road was reported to be 30 ft wide. The material used to cover the road surface was a mixture of clay, iron ore and boiler ash. Reasonably good agreement was found between the AP-42 unpaved road model (Equation 2-1) and the emission data collected for the simulated unpaved road.

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  • User's Guide - Emission Control Technologies and Emission .

    User's Guide - Emission Control Technologies and Emission .

    trafflc on an unpaved road because emissions are measured at multiple heights in the dust plume. The ideal exposure profiling system to characterize unpaved road mass emissions would have mass samplers situated at 1.5, 2.5, 4.0. 6.0. 7.5 and 10 meters above the road surface. Each sampling head

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  • US EPA -DUST SUPPRESSION ON WYOMING'S COAL MINE .

    US EPA -DUST SUPPRESSION ON WYOMING'S COAL MINE .

    AP-42 < 19981. found that emission of fugitive di haul roads is highly correlated ith vehicle weight and silt content of the surface material. The study reported that a silt content mean of 8.4^ of fines on a haul road a mean of 24*7 was found on a freshly graded haul road. This indicates a significant increase in fines after a road hjs been .

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  • Particulate Matter (PM) Emission Factors December 2014 For .

    Particulate Matter (PM) Emission Factors December 2014 For .

    AP-42. These emission factors are determined using the agreed control efficiencies that were . Where: Road Length = One-way distance in feet (ft) of paved or unpaved road within the facility, used by haul trucks and non-haul trucks. # Truck Trips = the number of roundtrips the vehicle made. Definitions: Haul Road: an unpaved road used by haul .

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  • Effect of vehicle characteristics on unpaved road dust .

    Effect of vehicle characteristics on unpaved road dust .

    vehicle and wake characteristics on the strength of emissions from an unpaved road.Vertical profile measurements of mass concentration of the passing plumes were carried out using a series of 3 instrumented towers.PM . .In comparison to emission estimates derived using US EPA AP-42 .

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  • EMISSIONS ACTIVITY CATEGORY FORM ROADWAYS AND .

    EMISSIONS ACTIVITY CATEGORY FORM ROADWAYS AND .

    6. Please complete the table for each unpaved road segment or parking area. Provide the silt content, in percentage, of the road surface materials for unpaved surfaces. Silt refers to particles that have a diameter equal to or less than 75 microns. Determine the silt content by following the procedures in Appendices C.1 and C.2 in AP-42 .

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  • AP 42 Section 13.2.2 Unpaved Roads

    AP 42 Section 13.2.2 Unpaved Roads

    AP 42 Section 13.2.2 Unpaved Roads - Related Information. Paved Roads, Unpaved Roads, Aggregate Handling and Storage, and Industrial Wind Erosion - November 2006 . Policy Guidance on the Use of the November 1, 2006, Update to AP-42 for Re-entrained Road Dust for SIP Development and Transportation Conformity .

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  • Effectiveness Demonstration Fugitive Dust Control .

    Effectiveness Demonstration Fugitive Dust Control .

    on the Unpaved Road as a Function of Suppressant Type and Time 6-44 Table 7-1 Vehicle Traffic on Bellevue Road 7-2 Table 7-2 Traffic Counts for Bellevue Road - June 6,1996 to June 11, 1996 7-3 Table 7-3 Daily Traffic Counts for Bellewe Road - June 6, 1996 to June 11, 1996 7-4

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  • 13.2.2 Unpaved Roads - United States Environmental .

    13.2.2 Unpaved Roads - United States Environmental .

    Moreover, to retain the quality ratings when addressing a group of unpaved roads, it is necessary that reliable correction parameter values be determined for the road in question. The field and laboratory procedures for determining road surface silt and moisture contents are given in AP-42 .

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  • Appendix 3. Air Quality Calculations

    Appendix 3. Air Quality Calculations

    • PM10 emissions factors are calculated using the USEPA AP-42 and the SCAQMD CEQA Handbook Dirt Road Emissions • Unpaved road travel will be minimized by routing equipment via the shortest unpaved road distance • All equipment operating is estimated to travel a maximum of 3 miles a day on unpaved .

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  • Measurement of Road Dust Emissions: The TRAKER and PI .

    Measurement of Road Dust Emissions: The TRAKER and PI .

    Measurement of Road Dust Emissions: The TRAKER and PI-SWERL Tools V. Etyemezian, H. Kuhns, J. Gillies, and . Technologies Versus the Traditional AP-42 Methodology. Report prepared by Clark . of vehicle-based platforms for more direct measurement of road dust emissions from both paved and unpaved roads. The TRAKER (Testing Re-entrained .

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  • Effectiveness Demonstration Fugitive Dust Control .

    Effectiveness Demonstration Fugitive Dust Control .

    on the Unpaved Road as a Function of Suppressant Type and Time 6-44 Table 7-1 Vehicle Traffic on Bellevue Road 7-2 Table 7-2 Traffic Counts for Bellevue Road - June 6,1996 to June 11, 1996 7-3 Table 7-3 Daily Traffic Counts for Bellewe Road - June 6, 1996 to June 11, 1996 7-4

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  • Background Material: 2004-05 Sec 7.10a SJV Private Unpaved .

    Background Material: 2004-05 Sec 7.10a SJV Private Unpaved .

    Step 3: Input the unpaved road dust emission factor. Step 4: Multiply the VMT by the unpaved road dust emission factor to get the uncorrected emissions estimate. Step 5: Using county specific rainfall data and EPA's AP-42 methodology, develop a rainfall correction factor. The factor shown is the annual composite for Fresno county.

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  • 3.0 Revised Formulations for Surface-to-Air Mass Flux Models

    3.0 Revised Formulations for Surface-to-Air Mass Flux Models

    3.0 Revised Formulations for Surface-to-Air Mass Flux Models. . Unpaved Road Emissions: Mechanical disturbance by vehicle suspends particles: Mass flux from roadway to air (mass/time) . the formulations in the EPA AP-42 guidance for vehicular particle suspension have undergone a number of revisions. The particle suspension formulations in .

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  • HAUL ROAD EMISSIONS - San Diego County, California

    HAUL ROAD EMISSIONS - San Diego County, California

    AP-42 provide empirical procedures for estimating overall haul road particulate releases from both paved and unpaved surfaces. In general, the particulate emissions are proportional to the number of vehicle miles traveled, road surface silt conditions, vehicle speed, and vehicle weight. Haul road dust that is generated will contain several trace

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  • FUGITIVE DUST FROM UNPAVED ROADS - marama

    FUGITIVE DUST FROM UNPAVED ROADS - marama

    FUGITIVE DUST FROM UNPAVED ROADS SCC: 2296000000 Fugitive dust emissions from unpaved road traffic were estimated for PM10-PRI, PM10-FIL, PM25-PRI, and PM25- . Source : AP-42 Table 2. State-Level Unpaved Road Surface Material Silt Content Values used in MANE-VU Fugitive Dust Calculations State Unpaved Road Surface Material Silt

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  • (PDF) Managing Dust on Unpaved Roads and Airports

    (PDF) Managing Dust on Unpaved Roads and Airports

    Managing Dust on Unpaved Roads and Airports. . placed on the unpaved road surface. . AP-42, Fifth Edition. U.S. Environmental Protection Agency, Office of Air Quality Planning and .

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  • Managing Dust on Unpaved Roads and Airports - Soilworks, LLC

    Managing Dust on Unpaved Roads and Airports - Soilworks, LLC

    Sources, AP-42, Fifth Edition. U.S. Environmental Protection Agency, Office of Air Quality Planning and. Standards, Office of Air and Radiation, Research Triangle Park, North Carolina. . Controlling dust from any unpaved road surface is a matter of stabilizing the soil used for the road's wearing surface. Stabilization requires that the .

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  • EMISSION INVENTORY SOURCE CATEGORY EMISSION .

    EMISSION INVENTORY SOURCE CATEGORY EMISSION .

    most recent version of U.S. EPA's AP-42 for unpaved roads.[11] Unpaved road dust emission estimates for each county within air basin were adjusted using the average number of days per year with rainfall equal to or greater than 0.01 inch; data are presented in Table 3.[12] The rainfall adjustment is .

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  • Road Dust Estimation for Paved and Unpaved Roads

    Road Dust Estimation for Paved and Unpaved Roads

    Paved road silt loadings were assigned to each of the twelve functional roadway classifications (six urban and six rural) based on the average annual traffic volume of each functional system by county, according to the baseline values provided in Table 13.2.1-3 of the AP-42 documentation.2 This AP-42 table also provides a set of adjustments

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  • CATTLE FEEDLOT DUST – LASER DIFFRACTION ANALYSIS OF .

    CATTLE FEEDLOT DUST – LASER DIFFRACTION ANALYSIS OF .

    Table 4.2 Annual emission rates (metric tons/year) from the two feedlots using US EPA AP-42 wind erosion on a dry exposed surface... 68 Table 4.3 Comparison of wind erosion parameters determined using US EPA AP-42 between

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  • WRAP Fugitive Dust Handbook - US Environmental .

    WRAP Fugitive Dust Handbook - US Environmental .

    WRAP Fugitive Dust Handbook Prepared for: Western Governors' Association 1515 Cleveland Place, Suite 200 . specifically AP-42: Compilation of Air Pollutant Emission Factors that are available . for the PM2.5 and PM10 size fractions of unpaved road emissions based on repeated field measurements of uncontrolled and controlled emissions. Thus .

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  • EIIP particulate emissions: Fugitive Dust from Unpaved Road

    EIIP particulate emissions: Fugitive Dust from Unpaved Road

    precipitation (P). (See AP-42, Section 13.2.2) • The monthly PM 10 emission factors are multiplied by the monthly vehicle miles traveled (VMT) for unpaved roads. • The equation and equation constants are discussed in Section 4.8.1.4 in the National Air Pollutant Emissions Trends Procedures Document for .

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  • User's Guide - Emission Control Technologies and Emission .

    User's Guide - Emission Control Technologies and Emission .

    trafflc on an unpaved road because emissions are measured at multiple heights in the dust plume. The ideal exposure profiling system to characterize unpaved road mass emissions would have mass samplers situated at 1.5, 2.5, 4.0. 6.0. 7.5 and 10 meters above the road surface. Each sampling head

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  • APPENDIX C AIR QUALITY IMPACT ASSESSMENT

    APPENDIX C AIR QUALITY IMPACT ASSESSMENT

    APPENDIX C AIR QUALITY IMPACT ASSESSMENT IMPACT ASSESSMENT METHODOLOGY . Volume 1, Fifth Edition, AP-42 in October 1997 that presents estimates of pollutant emissions based on the type of activity being conducted. Sections of this compilation address fugitive dust emissions from paved and unpaved roads, emissions from western surface coal .

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  • WRAP Fugitive Dust Handbook - wrapair

    WRAP Fugitive Dust Handbook - wrapair

    Sep 07, 2006 · WRAP Fugitive Dust Handbook Prepared for: Western Governors' Association 1515 Cleveland Place, Suite 200 . AP-42 with additional references to alternative methods adopted by state and local control . unpaved road length increase with increasing vehicle speed.3 For traffic on unpaved

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  • Nebraska DEE

    Nebraska DEE

    This is important because a paved road (concrete or asphalt) will have different physical characteristics than an unpaved (dirt or gravel) road. Each road type will have a different formula for calculating emissions (the spreadsheet will automatically choose which formula to use). . Silt loading is defined in AP-42 as "the mass of silt-size .

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  • WRAP Fugitive Dust Handbook - US Environmental .

    WRAP Fugitive Dust Handbook - US Environmental .

    WRAP Fugitive Dust Handbook Prepared for: Western Governors' Association 1515 Cleveland Place, Suite 200 . specifically AP-42: Compilation of Air Pollutant Emission Factors that are available . for the PM2.5 and PM10 size fractions of unpaved road emissions based on repeated field measurements of uncontrolled and controlled emissions. Thus .

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