[Code of Federal Regulations]
[Title 40, Volume 8]
[Revised as of July 1, 2007]
From the U.S. Government Printing Office via GPO Access
[CITE: 40CFR61.133]

[Page 85]
 
                   TITLE 40--PROTECTION OF ENVIRONMENT
 
         CHAPTER I--ENVIRONMENTAL PROTECTION AGENCY (CONTINUED)
 
PART 61_NATIONAL EMISSION STANDARDS FOR HAZARDOUS AIR POLLUTANTS
--Table of Contents
 
Subpart L_National Emission Standard for Benzene Emissions from Coke By-
                         Product Recovery Plants
 
Sec. 61.133  Standard: Light-oil sumps.

    (a) Each owner or operator of a light-oil sump shall enclose and 
seal the liquid surface in the sump to form a closed system to contain 
the emissions.
    (1) Except, the owner or operator may elect to install, operate, and 
maintain a vent on the light-oil sump cover. Each vent pipe must be 
equipped with a water leg seal, a pressure relief device, or vacuum 
relief device.
    (2) Except, the owner or operator may elect to install, operate, and 
maintain an access hatch on each light-oil sump cover. Each access hatch 
must be equipped with a gasket and a cover, seal, or lid that must be 
kept in a closed position at all times, unless in actual use.
    (3) The light-oil sump cover may be removed for periodic maintenance 
but must be replaced (with seal) at completion of the maintenance 
operation.
    (b) The venting of steam or other gases from the by-product process 
to the light-oil sump is not permitted.
    (c) Following the installation of any control equipment used to meet 
the requirements of paragraph (a) of this section, the owner or operator 
shall monitor the connections and seals on each control system to 
determine if it is operating with no detectable emissions, using Method 
21 (40 CFR part 60, appendix A) and the procedures specified in Sec. 
61.245(c), and shall visually inspect each source (including sealing 
materials) for evidence of visible defects such as gaps or tears. This 
monitoring and inspection shall be conducted semiannually and at any 
other time the cover is removed.
    (1) If an instrument reading indicates an organic chemical 
concentration more than 500 ppm above a background concentration, as 
measured by Method 21, a leak is detected.
    (2) If visible defects such as gaps in sealing materials are 
observed during a visual inspection, a leak is detected.
    (3) When a leak is detected, it shall be repaired as soon as 
practicable, but not later than 15 calendar days after it is detected.
    (4) A first attempt at repair of any leak or visible defect shall be 
made no later than 5 calendar days after each leak is detected.

[54 FR 38073, Sept. 14, 1989, as amended at 65 FR 62157, Oct. 17, 2000]