[Code of Federal Regulations]
[Title 40, Volume 5, Parts 53 to 59]
[Revised as of July 1, 2000]
From the U.S. Government Printing Office via GPO Access
[CITE: 40CFR57.501]

[Page 148-149]
 
                   TITLE 40--PROTECTION OF ENVIRONMENT
 
               CHAPTER I--ENVIRONMENTAL PROTECTION AGENCY
 
PART 57--PRIMARY NONFERROUS SMELTER ORDERS--Table of Contents
 
           Subpart E--Fugitive Emission Evaluation and Control
 
Sec. 57.501  General requirements.


    (a) Each NSO shall require the smelter owner to use such control 
measures as may be necessary to ensure that the

[[Page 149]]

smelter's fugitive emissions do not result in violations of the NAAQS 
for SO<INF>2</INF> in the smelter's DLA.
    (b) A smelter which is operating under an NSO containing a SIP 
compliance schedule established in accordance with Sec. 57.705 is 
required to be making progress toward compliance with any fugitive 
control requirements contained in its respective SIP and need not meet 
the other requirements contained in this subpart.
    (c) A smelter which is subject to an NSO which does not contain a 
SIP compliance schedule must meet the provisions of Secs. 57.502 and 
57.503.