ASTM WK45487

    Revision of D7520 - 13 Standard Test Method for Determining the Opacity of a Plume in the Outdoor Ambient Atmosphere

    (What is a Work Item?)

    Active Standard: D7520 - 13

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


    1. Rationale

    The D7520-13 was arbitrarily limited to stacks less than 7 diameter on its original publication because an EPA Method 301 comparison of DCOTs to EPA Method 9 (human readers) had not been performed. This comparison has now been performed. Thus the objective of this Work Item is to remove the 7 diameter limit, and align D7520-13 with its EPA published peer Alternative Method 082.


    digital camera; digital image; digital still camera; opacity;
    Citing ASTM Standards
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    Work Item Status

    Date Initiated:

    Technical Contact:
    Shawn Dolan

    Draft Under Development