Section C THE REQUIRED STATISTICAL INFORMATION: –GENERATING There are multiple options to generate the statistical information required in §58.11 (e). Monitoring agencies could: Run the one-page assessment available on When data from both a PM2.5 FRM and collocated continuous FEM are loaded to AQS, this ““ tool provides the necessary statistical information to use in an application to exclude data. The comparability assessment tool and a technical note explaining its use are available on the web at: Utilize one of the spreadsheet templates also available on AMTIC that were originally developed to support FEM and ARM applications. The file: may be the most useful file as it allows up to 365 data pairs to be included. This file is also available at “” http://www.epa.gov/ttn/amtic/contmont.html Develop your own spreadsheet or utilize statistical software with the equations identified in 40 CFR Part 53. These equations include: Slope - equation 19, intercept - equation 20, and the correlation coefficient (not correlation squared) - equation 21. Interpreting the one-page assessment: To ensure clarity in interpreting the one page assessments, we are providing the following example. The bottom line is that if the overall bias requirement for a PM2.5 continuous FEM is not met when compared to a collocated FRM, for a period of up to the last 36 months, then a monitoring agency may request that the data be set aside to use in design values calculations. When approved by the applicable Regional Office these data will be stored separately in AQS and not used in design value calculations. This is just an example and does not constitute an official action to request or approve exclusion of data. PM2.5 Continuous/ Cont. PM2.5 FRM bias Site Cont Method Begin Cont End Sampler pairs Intercept Correlation Name City Site ID POC Description Date Date per season (m) (y) (r) Sites with PM2.5 continuous FEMs that are collocated with FRMs: Winter = 150 Met-One BAM Jan 1 Dec. 31 Spring = 127 Oldtown Baltimore 24-510-0040 3 1.06 +1.49 no 0.96 1020 w/VSCC FEM 2011 2012 Summer = 121 Fall = 149
Section C –GENERATING THE REQUIRED STATISTICAL INFORMATION: There are multiple options to generate the statistical information required in §58.11 (e). Monitoring agencies could: Run the one-page assessment ““ available on When data from both a PM2.5 FRM and collocated continuous FEM are loaded to AQS, this tool provides the necessary statistical information to use in an application to exclude data. The comparability assessment tool and a technical note explaining its use are available on the web at: Utilize one of the spreadsheet templates also available on AMTIC that were originally developed to support FEM and ARM applications. The file: “” may be the most useful file as it allows up to 365 data pairs to be included. This file is also available at http://www.epa.gov/ttn/amtic/contmont.html Develop your own spreadsheet or utilize statistical software with the equations identified in 40 CFR Part 53. These equations include: Slope - equation 19, intercept - equation 20, and the correlation coefficient (not correlation squared) - equation 21. Interpreting the one-page assessment: To ensure clarity in interpreting the one page assessments, we are providing the following example. The bottom line is that if the overall bias requirement for a PM2.5 continuous FEM is not met when compared to a collocated FRM, for a period of up to the last 36 months, then a monitoring agency may request that the data be set aside to use in design values calculations. When approved by the applicable Regional Office these data will be stored separately in AQS and not used in design value calculations. This is just an example and does not constitute an official action to request or approve exclusion of data. Site Name City Site ID Cont POC Method Description PM2.5 Cont. Begin Date PM2.5 Cont End Date Continuous/ FRM Sampler pairs per season (m) Intercept (y) bias Correlation (r) Sites with PM2.5 continuous FEMs that are collocated with FRMs: Oldtown Baltimore 24-510-0040 3 Met-One BAM 1020 w/VSCC FEM Jan 1 2011 Dec. 31 2012 Winter = 150 Spring = 127 Summer = 121 Fall = 149 1.06 +1.49 no 0.96