[Code of Federal Regulations]
[Title 40, Volume 11]
[Revised as of July 1, 2003]
From the U.S. Government Printing Office via GPO Access
[CITE: 40CFR63.1290]

[Page 208-209]
 
                   TITLE 40--PROTECTION OF ENVIRONMENT
 
         CHAPTER I--ENVIRONMENTAL PROTECTION AGENCY (CONTINUED)
 
PART 63--NATIONAL EMISSION STANDARDS FOR HAZARDOUS AIR POLLUTANTS FOR SOURCE CATEGORIES--Table of Contents
 
 Subpart III--National Emission Standards for Hazardous Air Pollutants 
                for Flexible Polyurethane Foam Production
 
Sec. 63.1290  Applicability.

    Source: 63 FR 53996, Oct. 7, 1998, unless otherwise noted.


    (a) The provisions of this subpart apply to each new and existing 
flexible polyurethane foam or rebond foam process that meets the 
criteria listed in paragraphs (a)(1) through (3) of this section.
    (1) Produces flexible polyurethane or rebond foam;
    (2) Emits a HAP, except as provided in paragraph (c)(2) of this 
section; and
    (3) Is located at a plant site that is a major source, as defined in 
Sec. 63.2 of subpart A.
    (b) For the purpose of this subpart, an affected source includes all 
processes meeting the criteria in paragraphs (a)(1) through (a)(3) of 
this section that are located at a contiguous plant site, with the 
exception of those processes listed in paragraph (c) of this section.
    (c) A process meeting one of the following criteria listed in 
paragraphs (c)(1) through (3) of this section shall not be subject to 
the provisions of this subpart:
    (1) A process exclusively dedicated to the fabrication of flexible 
polyurethane foam;
    (2) A research and development process; or
    (3) A slabstock flexible polyurethane foam process at a plant site 
where the total amount of HAP, excluding diisocyanate reactants, used 
for slabstock foam production and foam fabrication is less than or equal 
to five tons per year, provided that slabstock foam production and foam 
fabrication processes are the only processes at the plant site that emit 
HAP. The amount of non-diisocyanate HAP used, HAPused, shall 
be calculated using Equation 1. Owners or operators of slabstock foam 
processes exempt from the regulation in accordance with this paragraph 
shall maintain records to verify that total non-diisocyanate HAP use at 
the plant site is less than 5 tons per year (4.5 megagrams per year).

[[Page 209]]

[GRAPHIC] [TIFF OMITTED] TR07OC98.012

Where,
HAPused = amount of HAP, excluding diisocyanate reactants, 
used at the plant site for slabstock foam production and foam 
fabrication, tons per year
VOLABA,i = volume of HAP ABA i used at the facility, gallons 
per year
DABA,i = density of HAP ABA i, pounds per gallon
m = number of HAP ABAs used
VOLclean,j = volume of HAP used as an equipment cleaner, 
gallons per year
Dclean,j = density of HAP equipment cleaner j, pounds per 
gallon
WTHAPclean,k = HAP content of equipment cleaner j, weight 
percent
n = number of HAP equipment cleaners used
VOLadh,k = volume of adhesive k, gallons per year
Dadh,k = density of adhesive k, pounds per gallon
WTHAPadh,k = HAP content of adhesive k, weight percent
o = number of adhesives used