ASTM WK30382

    New Test Method for Determining the Opacity of Fugitive Emissions, in the Outdoor Ambient Atmosphere, Using Digital Imager

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    Developed by Subcommittee: D22.03 | Committee D22 | Contact Staff Manager


    1. Scope

    1.1 This test method describes the procedures to determine the opacity of fugitive emissions plumes. The aforementioned plume is caused by particulate matter emitted from a fugitive source in the outdoor ambient environment using digital imagery and associated software and hardware. 1.2 The opacity of emissions is determined by the application of a digital image opacity technique (DOT) that consists of a digital image device, analysis software, and the output functions content to obtain and interpret digital images to determine and report plume/fugitive emissions opacity. 1.3 This test method is suitable to determine the opacity of fugitive emission plumes from 0 to 100 %. 1.4 Conditions that shall be considered when using this test method to obtain the digital image of the plume include the plumes background, orientation of the digital image device to the plume, and the sun (see Section 8). 1.5 This test method describes the procedures to certify the DOT, hardware, software, and method to determine the opacity of the fugitive emission plumes. 1.6 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.

    There are no good fugitive dust standards in existence today. EPA method 9 has been adapted to fill this void and several proposed test methods exist, but there is a need to have a good fugitive dust method that can be adopted by EPA and state agencies to allow for the reduction of fugitive dust from both stationary and mobile sources. This test method would be used by regulatory agencies to quantify fugitive emissions in permits and SIPs and used by regulated facilities to measure their compliance with permitted actives.


    digital camera; digital image; digital still camera; opacity

    The title and scope are in draft form and are under development within this ASTM Committee.

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    Work Item Status

    Date Initiated:

    Technical Contact:
    Steve Rasmussen

    Draft Under Development