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EPA/AR RIN: 2060-AP08 Publication ID: Fall 2013 
Title: Revisions to Test Method for Determining Stack Gas Velocity Taking Into Account Velocity Decay Near the Stack Walls 
Abstract: This action revises the voluntary test method for determining volumetric gas flow taking into account the velocity decay near the stack or duct walls. The current method addresses only sources where the flow measurements are made in locations with circular cross-sections. This revised test method addresses flow measurement locations with both circular and rectangular cross-sections, increases the accuracy of the method, and simplifies its application. The primary users of the method are owners and operators of utility units subject to the Acid Rain program and large electric generating units and large non-generating units that are subject to the nitrogen oxide State Implementation Plan call. 
Agency: Environmental Protection Agency(EPA)  Priority: Substantive, Nonsignificant 
RIN Status: Previously published in the Unified Agenda Agenda Stage of Rulemaking: Final Rule Stage 
Major: No  Unfunded Mandates: No 
CFR Citation: 40 CFR part 60     (To search for a specific CFR, visit the Code of Federal Regulations.)
Legal Authority: Clean Air Act title I   
Legal Deadline:  None
Timetable:
Action Date FR Cite
NPRM  08/25/2009  74 FR 42819   
Final Rule  04/00/2014 
Additional Information: Docket #:EPA-HQ-OAR-2008-0697
Regulatory Flexibility Analysis Required: No  Government Levels Affected: None 
Small Entities Affected: No  Federalism: No 
Included in the Regulatory Plan: No 
Sectors Affected: 221112 Fossil Fuel Electric Power Generation 
RIN Data Printed in the FR: No 
Agency Contact:
Jason Dewees
Environmental Protection Agency
Air and Radiation
E143-02,
Research Triangle Park, NC 27711
Phone:919 541-9724
Fax:919 541-0516
Email: dewees.jason@epa.gov

Conniesue Oldham
Environmental Protection Agency
Air and Radiation
D205-02, E143-02,
Research Triangle Park, NC 27711
Phone:919 541-7774
Fax:919 541-0516
Email: oldham.conniesue@epa.gov