[Code of Federal Regulations]
[Title 40, Volume 11]
[Revised as of January 1, 2007]
From the U.S. Government Printing Office via GPO Access
[CITE: 40CFR63.1424]

[Page 601-602]
 
                   TITLE 40--PROTECTION OF ENVIRONMENT
 
         CHAPTER I--ENVIRONMENTAL PROTECTION AGENCY (CONTINUED)
 
PART 63_NATIONAL EMISSION STANDARDS FOR HAZARDOUS AIR POLLUTANTS FOR 
 
  Subpart PPP_National Emission Standards for Hazardous Air Pollutant 
               Emissions for Polyether Polyols Production
 
Sec.  63.1424  Emission standards.

    (a) Except as provided under paragraph (b) of this section, the 
owner or operator of an existing or new affected source shall comply 
with the provisions in:
    (1) Sections 63.1425 through 63.1430 for process vents;
    (2) Section 63.1432 for storage vessels;
    (3) Section 63.1433 for wastewater;
    (4) Section 63.1434 for equipment leaks;

[[Page 602]]

    (5) Section 63.1435 for heat exchangers;
    (6) Section 63.1437 for additional test methods and procedures;
    (7) Section 63.1438 for monitoring levels and excursions; and
    (8) Section 63.1439 for general reporting and recordkeeping 
requirements.
    (b) When emissions of different kinds (i.e., emissions from process 
vents subject to Sec. Sec.  63.1425 through 63.1430, storage vessels 
subject to Sec.  63.1432, process wastewater, and/or in-process 
equipment subject to Sec.  63.149) are combined, and at least one of the 
emission streams would require control according to the applicable 
provision in the absence of combination with other emission streams, the 
owner or operator shall comply with the requirements of either paragraph 
(b)(1) or (2) of this section.
    (1) Comply with the applicable requirements of this subpart for each 
kind of emission in the stream as specified in paragraphs (a)(1) through 
(5) of this section; or
    (2) Comply with the most stringent set of requirements that applies 
to any individual emission stream that is included in the combined 
stream, where either that emission stream would be classified as 
requiring control in the absence of combination with other emission 
streams, or the owner chooses to consider that emission stream to 
require control for the purposes of this paragraph.