logging in or signing up Lambeth Particulate Inlet Impacts Rachele Download Post to : URL : Related Presentations : Share Add to Flag Embed Email Send to Blogs and Networks Add to Channel Uploaded from authorPOINTLite Insert YouTube videos in PowerPont slides with aS Desktop Copy embed code: (To copy code, click on the text box) Embed: URL: Thumbnail: WordPress Embed Customize Embed The presentation is successfully added In Your Favorites. Views: 192 Category: Entertainment License: All Rights Reserved Like it (0) Dislike it (0) Added: January 29, 2008 This Presentation is Public Favorites: 0 Presentation Description No description available. Comments Posting comment... Premium member Presentation Transcript Particulate Measurement Impacts of Different Size Selective Inlets: Particulate Measurement Impacts of Different Size Selective Inlets Prepared by Bryan Lambeth, P.E. Texas Commission on Environmental Quality for presentation at the 2006 National Air Quality ConferenceSlide2: PM2.5 WINS Inlet PM2.5 Sharp Cut Cyclone (SCC) PM10 Inlet PM2.5 Very Sharp Cut Cyclone (VSCC) Size Selective Inlets Used on Partisol and TEOM Particulate Monitors WINS = Well Impactor Ninety Six TEOM = Tapered Element Oscillating MassCollocated Measurement Comparisons: Collocated Measurement Comparisons PM2.5 FRM WINS versus TEOM SCC unadjusted PM2.5 FEM VSCC versus TEOM SCC unadjusted PM2.5 FEM VSCC versus TEOM SCC adjusted PM10 FEM Wedding hi-vol versus FEM TEOM FRM = Federal Reference Method FEM = Federal Equivalent MethodSelected Collocated PM2.5 Sites: Selected Collocated PM2.5 Sites El Paso Sun Metro C40 Dallas Hinton C401 Houston Aldine C8 Lubbock C306Detailed Site Maps: Detailed Site Maps Lubbock Sun Metro Aldine HintonDallas Hinton 481130069 PM2.5: Dallas Hinton 481130069 PM2.5 VSCC WINS Before TEOM AdjustmentDallas Hinton 481130069 PM2.5: Dallas Hinton 481130069 PM2.5 VSCC Before TEOM Adjustment After TEOM AdjustmentDallas Hinton 481130069 PM2.5: Dallas Hinton 481130069 PM2.5 Before TEOM Adjustment WINS Summer WinterDallas Hinton 481130069 PM2.5: Dallas Hinton 481130069 PM2.5 Before TEOM Adjustment VSCC Summer WinterDallas Hinton 481130069 PM2.5: Dallas Hinton 481130069 PM2.5 After TEOM Adjustment VSCC Summer WinterHouston Aldine 482010024 PM2.5: Houston Aldine 482010024 PM2.5 VSCC WINS Before TEOM AdjustmentHouston Aldine 482010024 PM2.5: Houston Aldine 482010024 PM2.5 VSCC Before TEOM Adjustment After TEOM AdjustmentHouston Aldine 482010024 PM2.5: Houston Aldine 482010024 PM2.5 Before TEOM Adjustment WINS Summer WinterHouston Aldine 482010024 PM2.5: Houston Aldine 482010024 PM2.5 Before TEOM Adjustment VSCC Summer WinterEl Paso Sun Metro 481410053 PM2.5: El Paso Sun Metro 481410053 PM2.5 VSCC WINS Before TEOM AdjustmentEl Paso Sun Metro 481410053 PM2.5: El Paso Sun Metro 481410053 PM2.5 VSCC Before TEOM Adjustment After TEOM AdjustmentEl Paso Sun Metro 481410053 PM2.5: El Paso Sun Metro 481410053 PM2.5 Before TEOM Adjustment WINS Summer WinterEl Paso Sun Metro 481410053 PM2.5: El Paso Sun Metro 481410053 PM2.5 Before TEOM Adjustment VSCC Summer WinterLubbock 483030001 PM2.5: Lubbock 483030001 PM2.5 VSCC WINS Before TEOM AdjustmentLubbock 483030001 PM2.5: Lubbock 483030001 PM2.5 Before TEOM Adjustment WINS Summer WinterLubbock 483030001 PM2.5: Lubbock 483030001 PM2.5 Before TEOM Adjustment VSCC Summer WinterTEOM PM10 Inlet Problem: TEOM PM10 Inlet Problem TEOM PM10 data shows large 20 to 40 percent high bias when compared to collocated Wedding hi-vol PM10 data Supported by measurements from 3 collocated TEOM and hi-vol PM10 sites in Texas TEOM PM10 dust storm filters viewed with a microscope showed numerous round particles 10 to 20 microns in size – indicating a TEOM inlet cut-point problemSlide23: PM10/coarse Inlet Problem The TEOM PM10 inlet is the same inlet used on the monitor that is currently proposed as FRM for PM10 non-continuous monitoring for PMcoarse determination using a PM10-PM2.5 difference method This inlet could lead to PMcoarse high bias in areas with significant mass loadings slightly above 10 microns (dust prone areas)Solutions: Solutions Short-Term: Adjust slope and intercept on TEOM PM10 monitor to provide data that more closely matches Wedding hi-vol data Proposed adjustment more important for sites with high dust levels, especially sites that do not need equivalency designation but need accurate AQI readings for public Long-Term: Have vendor supply an inlet that has a sharper 10-micron cut point and has EPA equivalency ratingCollocated PM10 Site Locations: Collocated PM10 Site Locations Socorro C49 Laredo C44 Mission C43Collocated PM10 Site Locations: Collocated PM10 Site Locations Socorro C49 Laredo C44 Mission C43PM10 Annual Averages: PM10 Annual Averages Concurrent Samples (mg/m3) TEOM – instrument slope 1.03 and intercept 3 (equivalent) Proposed – instrument slope 0.75 and intercept 5Mission 2150043 PM10: Mission 2150043 PM10 Equivalent Adjustment Proposed Adjustment TEOM Slope 1.03 / Intercept 3 TEOM Slope 0.75 / Intercept 5Laredo 484790016 PM10: Laredo 484790016 PM10 Equivalent Adjustment Proposed Adjustment TEOM Slope 1.03 / Intercept 3 TEOM Slope 0.75 / Intercept 5El Paso Socorro 481410057 PM10: El Paso Socorro 481410057 PM10 Equivalent Adjustment Proposed Adjustment TEOM Slope 1.03 / Intercept 3 TEOM Slope 0.75 / Intercept 5Web Links: Web Links TCEQ Air Quality Index Report: http://www.tceq.state.tx.us/cgi-bin/compliance/monops/psi_rpt AQI shown on this report for high dust events may often be over-rated based on TEOM data TCEQ Air Pollution Events: http://www.tceq.state.tx.us/compliance/monitoring/air/monops/sigevents06.html AQI level assigned in these analyses based on TEOM data for dust events may often be over-rated TCEQ Today’s Air Quality Forecast: http://www.tceq.state.tx.us/compliance/monitoring/air/monops/forecast_today.html Forecast development and verification is affected by inaccurate TEOM data – both PM10 for dust situations and PM2.5 for winter stagnation events You do not have the permission to view this presentation. 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Lambeth Particulate Inlet Impacts Rachele Download Post to : URL : Related Presentations : Share Add to Flag Embed Email Send to Blogs and Networks Add to Channel Uploaded from authorPOINTLite Insert YouTube videos in PowerPont slides with aS Desktop Copy embed code: (To copy code, click on the text box) Embed: URL: Thumbnail: WordPress Embed Customize Embed The presentation is successfully added In Your Favorites. Views: 192 Category: Entertainment License: All Rights Reserved Like it (0) Dislike it (0) Added: January 29, 2008 This Presentation is Public Favorites: 0 Presentation Description No description available. Comments Posting comment... Premium member Presentation Transcript Particulate Measurement Impacts of Different Size Selective Inlets: Particulate Measurement Impacts of Different Size Selective Inlets Prepared by Bryan Lambeth, P.E. Texas Commission on Environmental Quality for presentation at the 2006 National Air Quality ConferenceSlide2: PM2.5 WINS Inlet PM2.5 Sharp Cut Cyclone (SCC) PM10 Inlet PM2.5 Very Sharp Cut Cyclone (VSCC) Size Selective Inlets Used on Partisol and TEOM Particulate Monitors WINS = Well Impactor Ninety Six TEOM = Tapered Element Oscillating MassCollocated Measurement Comparisons: Collocated Measurement Comparisons PM2.5 FRM WINS versus TEOM SCC unadjusted PM2.5 FEM VSCC versus TEOM SCC unadjusted PM2.5 FEM VSCC versus TEOM SCC adjusted PM10 FEM Wedding hi-vol versus FEM TEOM FRM = Federal Reference Method FEM = Federal Equivalent MethodSelected Collocated PM2.5 Sites: Selected Collocated PM2.5 Sites El Paso Sun Metro C40 Dallas Hinton C401 Houston Aldine C8 Lubbock C306Detailed Site Maps: Detailed Site Maps Lubbock Sun Metro Aldine HintonDallas Hinton 481130069 PM2.5: Dallas Hinton 481130069 PM2.5 VSCC WINS Before TEOM AdjustmentDallas Hinton 481130069 PM2.5: Dallas Hinton 481130069 PM2.5 VSCC Before TEOM Adjustment After TEOM AdjustmentDallas Hinton 481130069 PM2.5: Dallas Hinton 481130069 PM2.5 Before TEOM Adjustment WINS Summer WinterDallas Hinton 481130069 PM2.5: Dallas Hinton 481130069 PM2.5 Before TEOM Adjustment VSCC Summer WinterDallas Hinton 481130069 PM2.5: Dallas Hinton 481130069 PM2.5 After TEOM Adjustment VSCC Summer WinterHouston Aldine 482010024 PM2.5: Houston Aldine 482010024 PM2.5 VSCC WINS Before TEOM AdjustmentHouston Aldine 482010024 PM2.5: Houston Aldine 482010024 PM2.5 VSCC Before TEOM Adjustment After TEOM AdjustmentHouston Aldine 482010024 PM2.5: Houston Aldine 482010024 PM2.5 Before TEOM Adjustment WINS Summer WinterHouston Aldine 482010024 PM2.5: Houston Aldine 482010024 PM2.5 Before TEOM Adjustment VSCC Summer WinterEl Paso Sun Metro 481410053 PM2.5: El Paso Sun Metro 481410053 PM2.5 VSCC WINS Before TEOM AdjustmentEl Paso Sun Metro 481410053 PM2.5: El Paso Sun Metro 481410053 PM2.5 VSCC Before TEOM Adjustment After TEOM AdjustmentEl Paso Sun Metro 481410053 PM2.5: El Paso Sun Metro 481410053 PM2.5 Before TEOM Adjustment WINS Summer WinterEl Paso Sun Metro 481410053 PM2.5: El Paso Sun Metro 481410053 PM2.5 Before TEOM Adjustment VSCC Summer WinterLubbock 483030001 PM2.5: Lubbock 483030001 PM2.5 VSCC WINS Before TEOM AdjustmentLubbock 483030001 PM2.5: Lubbock 483030001 PM2.5 Before TEOM Adjustment WINS Summer WinterLubbock 483030001 PM2.5: Lubbock 483030001 PM2.5 Before TEOM Adjustment VSCC Summer WinterTEOM PM10 Inlet Problem: TEOM PM10 Inlet Problem TEOM PM10 data shows large 20 to 40 percent high bias when compared to collocated Wedding hi-vol PM10 data Supported by measurements from 3 collocated TEOM and hi-vol PM10 sites in Texas TEOM PM10 dust storm filters viewed with a microscope showed numerous round particles 10 to 20 microns in size – indicating a TEOM inlet cut-point problemSlide23: PM10/coarse Inlet Problem The TEOM PM10 inlet is the same inlet used on the monitor that is currently proposed as FRM for PM10 non-continuous monitoring for PMcoarse determination using a PM10-PM2.5 difference method This inlet could lead to PMcoarse high bias in areas with significant mass loadings slightly above 10 microns (dust prone areas)Solutions: Solutions Short-Term: Adjust slope and intercept on TEOM PM10 monitor to provide data that more closely matches Wedding hi-vol data Proposed adjustment more important for sites with high dust levels, especially sites that do not need equivalency designation but need accurate AQI readings for public Long-Term: Have vendor supply an inlet that has a sharper 10-micron cut point and has EPA equivalency ratingCollocated PM10 Site Locations: Collocated PM10 Site Locations Socorro C49 Laredo C44 Mission C43Collocated PM10 Site Locations: Collocated PM10 Site Locations Socorro C49 Laredo C44 Mission C43PM10 Annual Averages: PM10 Annual Averages Concurrent Samples (mg/m3) TEOM – instrument slope 1.03 and intercept 3 (equivalent) Proposed – instrument slope 0.75 and intercept 5Mission 2150043 PM10: Mission 2150043 PM10 Equivalent Adjustment Proposed Adjustment TEOM Slope 1.03 / Intercept 3 TEOM Slope 0.75 / Intercept 5Laredo 484790016 PM10: Laredo 484790016 PM10 Equivalent Adjustment Proposed Adjustment TEOM Slope 1.03 / Intercept 3 TEOM Slope 0.75 / Intercept 5El Paso Socorro 481410057 PM10: El Paso Socorro 481410057 PM10 Equivalent Adjustment Proposed Adjustment TEOM Slope 1.03 / Intercept 3 TEOM Slope 0.75 / Intercept 5Web Links: Web Links TCEQ Air Quality Index Report: http://www.tceq.state.tx.us/cgi-bin/compliance/monops/psi_rpt AQI shown on this report for high dust events may often be over-rated based on TEOM data TCEQ Air Pollution Events: http://www.tceq.state.tx.us/compliance/monitoring/air/monops/sigevents06.html AQI level assigned in these analyses based on TEOM data for dust events may often be over-rated TCEQ Today’s Air Quality Forecast: http://www.tceq.state.tx.us/compliance/monitoring/air/monops/forecast_today.html Forecast development and verification is affected by inaccurate TEOM data – both PM10 for dust situations and PM2.5 for winter stagnation events