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Clean Air Markets

Monitoring Plans

The monitoring plan describes how a facility monitors its emissions. Monitoring plan data define relationships between stacks, pipes, and units; specify locations at a facility from which emissions are monitored; and identify systems of monitoring equipment by detailing the individual system components. Monitoring plan data also provide operational characteristics and qualifications for certain special types of monitoring (e.g., low mass emissions monitoring).

How to Access

The monitoring plans can be accessed through EPA's FTP site. The FTP site contains a zip file for each facility, listed by ORISPL code. The zip files contain an .xml file for each monitored location (i.e., stack, common stack, or multiple stack) at the facility. To view the monitoring plan, right click on the correct .xml file and select "open with" Internet Explorer, as shown below.

screenshot of an open submenu

NOTE that Internet Explorer version 9 and subsequent versions do not display the files correctly. Please view the files using Internet Explorer version 8 (or prior IE versions). To select the browser mode, hit F-12 while using IE9 and then select IE 8 at the bottom of the screen, as shown below.

About File Names

The .xml files are named to identify the ORISPL code, monitored location ID, file generation date, and the year and quarter in which the monitoring configuration started.

Example of a filename

How to Read

Once the zip file is opened in Internet Explorer, the monitoring plan (PDF, 4pp, 41K) will be displayed as a series of tables. Many of the tables contain codes; descriptions of the codes are available in the XML Code Description (PDF, 42pp, 415K) document.

For support, please contact your regional analyst. (PDF, 19pp, 200K)


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