[Code of Federal Regulations]
[Title 40, Volume 24]
[Revised as of July 1, 2004]
From the U.S. Government Printing Office via GPO Access
[CITE: 40CFR264.1057]

[Page 391-392]
 
                   TITLE 40--PROTECTION OF ENVIRONMENT
 
         CHAPTER I--ENVIRONMENTAL PROTECTION AGENCY (CONTINUED)
 
PART 264_STANDARDS FOR OWNERS AND OPERATORS OF HAZARDOUS WASTE TREATMENT, 
STORAGE, AND DISPOSAL FACILITIES--Table of Contents
 
          Subpart BB_Air Emission Standards for Equipment Leaks
 
Sec. 264.1057  Standards: Valves in gas/vapor service or in light liquid 
service.

    (a) Each valve in gas/vapor or light liquid service shall be 
monitored

[[Page 392]]

monthly to detect leaks by the methods specified in Sec. 264.1063(b) 
and shall comply with paragraphs (b) through (e) of this section, except 
as provided in paragraphs (f), (g), and (h) of this section, and 
Sec. Sec. 264.1061 and 264.1062.
    (b) If an instrument reading of 10,000 ppm or greater is measured, a 
leak is detected.
    (c)(1) Any valve for which a leak is not detected for two successive 
months may be monitored the first month of every succeeding quarter, 
beginning with the next quarter, until a leak is detected.
    (2) If a leak is detected, the valve shall be monitored monthly 
until a leak is not detected for two successive months,
    (d)(1) When a leak is detected, it shall be repaired as soon as 
practicable, but no later than 15 calendar days after the leak is 
detected, except as provided in Sec. 264.1059.
    (2) A first attempt at repair shall be made no later than 5 calendar 
days after each leak is detected.
    (e) First attempts at repair include, but are not limited to, the 
following best practices where practicable:
    (1) Tightening of bonnet bolts.
    (2) Replacement of bonnet bolts.
    (3) Tightening of packing gland nuts.
    (4) Injection of lubricant into lubricated packing.
    (f) Any valve that is designated, as described in Sec. 
264.1064(g)(2), for no detectable emissions, as indicated by an 
instrument reading of less than 500 ppm above background, is exempt from 
the requirements of paragraph (a) of this section if the valve:
    (1) Has no external actuating mechanism in contact with the 
hazardous waste stream.
    (2) Is operated with emissions less than 500 ppm above background as 
determined by the method specified in Sec. 264.1063(c).
    (3) Is tested for compliance with paragraph (f)(2) of this section 
initially upon designation, annually, and at other times as requested by 
the Regional Administrator.
    (g) Any valve that is designated, as described in Sec. 
264.1064(h)(1), as an unsafe-to-monitor valve is exempt from the 
requirements of paragraph (a) of this section if:
    (1) The owner or operator of the valve determines that the valve is 
unsafe to monitor because monitoring personnel would be exposed to an 
immediate danger as a consequence of complying with paragraph (a) of 
this section.
    (2) The owner or operator of the valve adheres to a written plan 
that requires monitoring of the valve as frequently as practicable 
during safe-to-monitor times.
    (h) Any valve that is designated, as described in Sec. 
264.1064(h)(2), as a difficult-to-monitor valve is exempt from the 
requirements of paragraph (a) of this section if:
    (1) The owner or operator of the valve determines that the valve 
cannot be monitored without elevating the monitoring personnel more than 
2 meters above a support surface.
    (2) The hazardous waste management unit within which the valve is 
located was in operation before June 21, 1990.
    (3) The owner or operator of the valve follows a written plan that 
requires monitoring of the valve at least once per calendar year.