EPA RCRA Hazardous Waste Management 264-SubpartBB: Part 264 Subpart BB: Air emission standards for equipment leaks

Applies to equipment (pumps, compressors, pressure relief devices, sampling connections, open-ended valves or lines, valves, flanges and connectors) containing or contacting hazardous waste with organic concentrations of at least 10 percent by weight in permitted units, units at permitted facilities not exempt under 262.17, and generator 90-day units as specified, with each piece of equipment marked for identification (264.1050). Pumps in light liquid service are monitored monthly (instrument reading of 10,000 ppm or greater, or liquid dripping, is a leak) and visually inspected weekly, with a first repair attempt within 5 calendar days and repair within 15 days (264.1052); compressors need seal systems with barrier fluid and sensors (264.1053); pressure relief devices in gas or vapour service must operate with no detectable emissions (below 500 ppm above background) and be retested within 5 days after a release (264.1054); sampling connections need closed-purge or closed-vent systems (264.1055); open-ended valves or lines need caps, plugs or second valves (264.1056); valves in gas, vapour or light liquid service are monitored monthly, with quarterly monitoring allowed after two consecutive leak-free months (264.1057); pumps and valves in heavy liquid service, relief devices in light liquid service and flanges are checked within 5 days when a leak is evident (264.1058); repairs may be delayed only where infeasible without shutdown, until the next unit shutdown (264.1059); closed-vent systems and control devices meet 264.1033 (264.1060); alternative percentage-leaking and skip-period programmes are allowed for valves (264.1061, 264.1062); Method 21 test procedures apply (264.1063); records include equipment lists, leak tags, repair records and the determinations of organic concentration (264.1064); and semiannual reports cover leaks not repaired on time and control device exceedances (264.1065).