[Title 40 CFR 60.691]
[Code of Federal Regulations (annual edition) - July 1, 2009 Edition]
[Title 40 - PROTECTION OF ENVIRONMENT]
[Chapter I - ENVIRONMENTAL PROTECTION AGENCY (CONTINUED)]
[Subchapter C - AIR PROGRAMS (CONTINUED)]
[Part 60 - STANDARDS OF PERFORMANCE FOR NEW STATIONARY SOURCES--]
[Subpart Qqq - Standards of Performance for VOC Emissions From Petroleum]
[Sec. 60.691 - Definitions.]
[From the U.S. Government Printing Office]


40PROTECTION OF ENVIRONMENT62009-07-012009-07-01false60.691Sec. 60.691PROTECTION OF ENVIRONMENTENVIRONMENTAL PROTECTION AGENCY (CONTINUED)AIR PROGRAMS (CONTINUED)STANDARDS OF PERFORMANCE FOR NEW STATIONARY SOURCES--Standards of Performance for VOC Emissions From Petroleum
Sec. 60.691  Definitions.

    As used in this subpart, all terms not defined herein shall have the 
meaning given them in the Act or in subpart A of 40 CFR part 60, and the 
following terms shall have the specific meanings given them.
    Active service means that a drain is receiving refinery wastewater 
from a process unit that will continuously maintain a water seal.
    Aggregate facility means an individual drain system together with 
ancillary downstream sewer lines and oil-water separators, down to and 
including the secondary oil-water separator, as applicable.
    Catch basin means an open basin which serves as a single collection 
point for stormwater runoff received directly from refinery surfaces and 
for refinery wastewater from process drains.
    Closed vent system means a system that is not open to the atmosphere 
and that is composed of piping, connections, and, if necessary, flow-
inducing devices that transport gas or vapor from an emission source to 
a control device. If gas or vapor from regulated equipment are routed to 
a process (e.g., to a petroleum refinery fuel gas system), the process 
shall not be considered a closed vent system and is not subject to the 
closed vent system standards.
    Completely closed drain system means an individual drain system that 
is not open to the atmosphere and is equipped and operated with a closed 
vent system and control device complying with the requirements of Sec. 
60.692-5.
    Control device means an enclosed combustion device, vapor recovery 
system or flare.
    Fixed roof means a cover that is mounted to a tank or chamber in a 
stationary manner and which does not move with fluctuations in 
wastewater levels.
    Floating roof means a pontoon-type or double-deck type cover that 
rests on the liquid surface.
    Gas-tight means operated with no detectable emissions.
    Individual drain system means all process drains connected to the 
first common downstream junction box. The term includes all such drains 
and common junction box, together with their associated sewer lines and 
other junction boxes, down to the receiving oil-water separator.
    Junction box means a manhole or access point to a wastewater sewer 
system line.
    No detectable emissions means less than 500 ppm above background 
levels, as measured by a detection instrument in accordance with Method 
21 in appendix A of 40 CFR part 60.
    Non-contact cooling water system means a once-through drain, 
collection and treatment system designed and operated for collecting 
cooling water which does not come into contact with hydrocarbons or oily 
wastewater and which is not recirculated through a cooling tower.
    Oil-water separator means wastewater treatment equipment used to 
separate oil from water consisting of a separation tank, which also 
includes the forebay and other separator basins, skimmers, weirs, grit 
chambers, and sludge hoppers. Slop oil facilities, including tanks, are 
included in this term along with storage vessels and auxiliary equipment 
located between individual drain systems and the oil-water separator. 
This term does not include storage vessels or auxiliary equipment which 
do not come in contact with or store oily wastewater.
    Oily wastewater means wastewater generated during the refinery 
process which contains oil, emulsified oil, or other hydrocarbons. Oily 
wastewater originates from a variety of refinery processes including 
cooling water, condensed stripping steam, tank draw-off, and contact 
process water.
    Petroleum means the crude oil removed from the earth and the oils 
derived from tar sands, shale, and coal.
    Petroleum refinery means any facility engaged in producing gasoline, 
kerosene, distillate fuel oils, residual fuel oils, lubricants, or other 
products through the distillation of petroleum, or through the 
redistillation of petroleum, cracking, or reforming unfinished petroleum 
derivatives.
    Sewer line means a lateral, trunk line, branch line, ditch, channel, 
or other conduit used to convey refinery wastewater to downstream 
components of a refinery wastewater treatment

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system. This term does not include buried, below-grade sewer lines.
    Slop oil means the floating oil and solids that accumulate on the 
surface of an oil-water separator.
    Storage vessel means any tank, reservoir, or container used for the 
storage of petroleum liquids, including oily wastewater.
    Stormwater sewer system means a drain and collection system designed 
and operated for the sole purpose of collecting stormwater and which is 
segregated from the process wastewater collection system.
    Wastewater system means any component, piece of equipment, or 
installation that receives, treats, or processes oily wastewater from 
petroleum refinery process units.
    Water seal controls means a seal pot, p-leg trap, or other type of 
trap filled with water that has a design capability to create a water 
barrier between the sewer and the atmosphere.

[53 FR 47623, Nov. 23, 1985, as amended at 60 FR 43259, Aug. 18, 1995]