NR 440.70(2)(m)(m) “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 wastewaters and which is not recirculated through a cooling tower.
NR 440.70(2)(n)(n) “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.
NR 440.70(2)(o)(o) “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.
NR 440.70(2)(p)(p) “Petroleum” means the crude oil removed from the earth and the oils derived from tar sands, shale and coal.
NR 440.70(2)(q)(q) “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.
NR 440.70(2)(r)(r) “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 system. This term does not include buried, below-grade sewer lines.
NR 440.70(2)(s)(s) “Slop oil” means the floating oil and solids that accumulate on the surface of an oil-water separator.
NR 440.70(2)(t)(t) “Storage vessel” means any tank, reservoir or container used for the storage of petroleum liquids, including oil wastewater.
NR 440.70(2)(u)(u) “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.
NR 440.70(2)(v)(v) “Wastewater system” means any component, piece of equipment or installation that receives, treats or processes oily wastewater from petroleum refinery process units.
NR 440.70(2)(w)(w) “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 atmosphere.
NR 440.70(3)(3)Standards: general.
NR 440.70(3)(a)(a) Each owner or operator subject to the provisions of this section shall comply with the requirements of this subsection, with subs. (4) to (7), (10) and (11), except during periods of startup, shutdown or malfunction.
NR 440.70(3)(b)(b) Compliance with this subsection, subs. (4) to (7), (10) and (11) shall be determined by review of records and reports, review of performance test results and inspection using the methods and procedures specified in sub. (14).
NR 440.70(3)(c)(c) Permission to use alternative means of emission limitation to meet the requirements of subs. (4) to (6) may be granted if the administrator’s approval is obtained under 40 CFR 60.694.
NR 440.70 NoteNote: See Note in sub. (11).
NR 440.70(3)(d)(d) Stormwater sewer systems are not subject to the requirements of this section.
NR 440.70(3)(e)(e) Ancillary equipment, which is physically separate from the wastewater system and does not come in contact with or store oily wastewater, is not subject to the requirements of this section.
NR 440.70(3)(f)(f) Non-contact cooling water systems are not subject to the requirements of this section.
NR 440.70(3)(g)(g) An owner or operator shall demonstrate compliance with the exclusions in pars. (d) to (f), as provided in sub. (15) (L), (m) and (n).
NR 440.70(4)(4)Standards: individual drain systems.
NR 440.70(4)(a)(a) Each drain shall be equipped with water seal controls.
NR 440.70(4)(b)(b) Each drain in active service shall be checked by visual or physical inspection initially and monthly thereafter for indications of low water levels or other conditions that would reduce the effectiveness of the water seal controls.
NR 440.70(4)(c)(c) Except as provided in par. (d), each drain out of active service shall be checked by visual or physical inspection initially and weekly thereafter for indications of low water levels or other problems that could result in VOC emissions.
NR 440.70(4)(d)(d) As an alternative to the requirements in par. (c), if an owner or operator elects to install a tightly sealed cap or plug over a drain that is out of service, inspections shall be conducted initially and semiannually to ensure caps or plugs are in place and properly installed.
NR 440.70(4)(e)(e) Whenever low water levels or missing or improperly installed caps or plugs are identified, water shall be added or first efforts at repair shall be made as soon as practicable, but not later than 24 hours after detection, except as provided in sub. (8).
NR 440.70(4)(f)(f) Junction boxes shall be equipped with a cover and may have an open vent pipe. The vent pipe shall be at least 90 cm (3 ft.) in length and may not exceed 10.2 cm (4 in.) in diameter.
NR 440.70(4)(g)(g) Junction box covers shall have a tight seal around the edge and shall be kept in place at all times, except during inspection and maintenance.
NR 440.70(4)(h)(h) Junction boxes shall be visually inspected initially and semiannually thereafter to ensure that the cover is in place and to ensure that the cover has a tight seal around the edge.