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(h) ASTM. American Society for Testing and Materials International, 100 Barr Harbor Drive, P.O. Box C700, West Conshohocken, PA 19428-2959 (www.astm.org).
(1) ASTM D 2156-09 (``ASTM D2156''), Standard Test Method for Smoke Density in Flue Gases from Burning Distillate Fuels, approved December 1, 2009, IBR approved for appendix E to subpart B.
(2) [Reserved].
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