Chemical Mass Balance (CMB) Model

The Chemical Mass Balance (CMB) Model EPA-CMBv8.2 is one of several receptor models that has been applied to air quality problems over the last two decades. Based on an effective-variance least squares method (EVLS), EPA has supported CMB as a regulatory planning tool through its approval of numerous State Implementation Plans (SIPs) which have a source apportionment component. CMB requires speciated profiles of potentially contributing sources and the corresponding ambient data from analyzed samples collected at a single receptor site. CMB is ideal for localized nonattainment problems and has proven to be a useful tool in applications where steady-state Gaussian plume models are inappropriate, as well as for confirming or adjusting emissions inventories. Guidance in their use may be found in Section 5.2.2 of the "

Chemical Mass Balance Model EPA-CMB8.2

Windows-based EPA-CMB8.2 represents the latest advancement in the CMB series and replaces CMB7.   EPA-CMB8.2 has been subjected to peer review and is available for regulatory applications. Model Code README Executable Source Code Model Documentation Users Manual CMB Protocol Peer Review Response to Peer Review Model Change Bulletin Presentation with Demo (A&WMA's 98th Annual Conference, 23 June 2005; Minneapolis, MN) Evaluation Data Sets Test Data Set Other Data Sets Formated for CMB Input    Portland Aerosol Characterization Study (PACS):      Description/Credits      Data Set    San Joaquin Valley Fine (SJVF):      Description/Credits      Data Set    Coastal Oxidant Assessment for Southeast Texas (COAST):      Description/Credits      Data Set    North American Research Strategy for Tropospheric Ozone (NARSTO):      Description/Credits      NARSTO Documentation      Data Set    Northern Front Range Air Quality Study (NFRAQS):      Description/Credits      NFRAQS Executive Summary      Data Set