Sec. 761.72 Scrap metal recovery ovens and smelters.
Any person may dispose of residual PCBs associated with PCB-
Contaminated articles regulated for
[[Page 35456]]
disposal under Sec. 761.60(b), metal surfaces in PCB remediation waste
regulated under Sec. 761.61, or metal surfaces in PCB bulk product
waste regulated under Secs. 761.62(a)(6) and 761.79(c)(6), from which
all free-flowing liquids have been removed:
(a) In a scrap metal recovery oven:
(1) The oven shall have at least two enclosed (i.e., negative
draft, no fugitive emissions) interconnected chambers.
(2) The equipment with all free-flowing liquid removed shall first
be placed in the primary chamber at room temperature.
(3) The primary chamber shall operate at a temperature between 537
deg.C and 650 deg.C for a minimum of 2\1/2\ hours and reach a minimum
temperature of 650 deg.C (1,202 deg.F) once during each heating cycle
or batch treatment of unheated, liquid-free equipment.
(4) Heated gases from the primary chamber must feed directly into
the secondary chamber (i.e., afterburner) which must operate at a
minimum temperature of 1,200 deg.C (2,192 deg.F) with at least a 3
percent excess oxygen and a retention time of 2.0 seconds with a
minimum combustion efficiency of 99.9 percent according to the
definition in Sec. 761.70(a)(2).
(5) Heating of the primary chamber shall not commence until the
secondary chamber has reached a temperature of 1,200 100
deg.C (2,192 deg. 180 deg.F).
(6) Continuous emissions monitors and recorders for carbon dioxide,
carbon monoxide, and excess oxygen in the secondary chamber and
continuous temperature recorders in the primary and secondary chambers
shall be installed and operated while the primary and secondary
chambers are in operation to assure that the two chambers are within
the operating parameters in paragraphs (a)(3) through (a)(5) of this
section.
(7) Emissions from the secondary chamber shall be vented through an
exhaust gas stack in accordance with valid State and local air
regulations and permits, which include a standard for PCBs or meets the
standards in paragraph (a)(8) of this section.
(8) Exhaust gas stack emissions shall be for: particulates <0.015
grains/dry standard cubic foot, sulfur dioxide <35 parts per million by
volume (ppmv), nitrogen oxide <150 ppmv, carbon monoxide <35 ppmv, and
hydrogen chloride <35 ppmv.
(9) A measurement of the temperature in the secondary chamber at
the time the primary chamber starts heating must be taken, recorded and
retained at the facility for 3 years from the date each charge is
introduced into the primary chamber.
(b) By smelting:
(1) The operating temperature of the hearth must be at least 1,000
deg.C at the time it is charged with any PCB-Contaminated non-porous
surface.
(2) Each charge containing a PCB-Contaminated item must be added
into molten metal or a hearth at 1,000 deg.C.
(3) Successive charges may not be introduced into the hearth in
less than 15-minute intervals.
(4) The smelter must operate in compliance with any applicable
emissions standards in part 60 of this chapter.
(5) The smelter must have an operational device which accurately
measures directly or indirectly, the temperature in the hearth.
(6) Take, record and retain at the disposal facility for 3 years
from the date each charge is introduced, a reading of the temperature
in the hearth at the time it is charged with a non-porous surface item.
(c)(1) Scrap metal recovery ovens and smelters must either have a
final permit under RCRA (part 266, subpart H of this chapter and
Sec. 270.66 of this chapter) or be operating under a valid State air
emissions permit which includes a standard for PCBs.
(2) Scrap metal recovery ovens and smelters disposing of PCBs must
provide notification as disposers of PCBs, are not required to submit
annual reports, and shall otherwise comply with all applicable
provisions of subparts J and K of this part, as well as other
applicable Federal, State, and local laws and regulations.
(3) In lieu of the requirement in paragraphs (a) and (b) of this
section, upon written request by the owner or operator of a scrap metal
recovery oven or smelter, the EPA Regional Administrator, for the
Region where the oven or smelter is located, may make a finding in
writing, based on a site-specific risk assessment, that the oven or
smelter does not pose an unreasonable risk of injury to health or the
environment because it is operating in compliance with the parameters
and conditions listed in paragraphs (a)(1) through (a)(8) and (b)(1)
through (b)(9) of this section even though the oven or smelter does not
have a RCRA or State air permit as required by paragraph (c)(1) of this
section. The written request shall include a site-specific risk
assessment.
Sec. 761.72 Scrap metal recovery ovens and smelters.
Any person may dispose of residual PCBs associated with PCB-
Contaminated articles regulated for
[[Page 35456]]
disposal under Sec. 761.60(b), metal surfaces in PCB remediation waste
regulated under Sec. 761.61, or metal surfaces in PCB bulk product
waste regulated under Secs. 761.62(a)(6) and 761.79(c)(6), from which
all free-flowing liquids have been removed:
(a) In a scrap metal recovery oven:
(1) The oven shall have at least two enclosed (i.e., negative
draft, no fugitive emissions) interconnected chambers.
(2) The equipment with all free-flowing liquid removed shall first
be placed in the primary chamber at room temperature.
(3) The primary chamber shall operate at a temperature between 537
deg.C and 650 deg.C for a minimum of 2\1/2\ hours and reach a minimum
temperature of 650 deg.C (1,202 deg.F) once during each heating cycle
or batch treatment of unheated, liquid-free equipment.
(4) Heated gases from the primary chamber must feed directly into
the secondary chamber (i.e., afterburner) which must operate at a
minimum temperature of 1,200 deg.C (2,192 deg.F) with at least a 3
percent excess oxygen and a retention time of 2.0 seconds with a
minimum combustion efficiency of 99.9 percent according to the
definition in Sec. 761.70(a)(2).
(5) Heating of the primary chamber shall not commence until the
secondary chamber has reached a temperature of 1,200 100
deg.C (2,192 deg. 180 deg.F).
(6) Continuous emissions monitors and recorders for carbon dioxide,
carbon monoxide, and excess oxygen in the secondary chamber and
continuous temperature recorders in the primary and secondary chambers
shall be installed and operated while the primary and secondary
chambers are in operation to assure that the two chambers are within
the operating parameters in paragraphs (a)(3) through (a)(5) of this
section.
(7) Emissions from the secondary chamber shall be vented through an
exhaust gas stack in accordance with valid State and local air
regulations and permits, which include a standard for PCBs or meets the
standards in paragraph (a)(8) of this section.
(8) Exhaust gas stack emissions shall be for: particulates <0.015
grains/dry standard cubic foot, sulfur dioxide <35 parts per million by
volume (ppmv), nitrogen oxide <150 ppmv, carbon monoxide <35 ppmv, and
hydrogen chloride <35 ppmv.
(9) A measurement of the temperature in the secondary chamber at
the time the primary chamber starts heating must be taken, recorded and
retained at the facility for 3 years from the date each charge is
introduced into the primary chamber.
(b) By smelting:
(1) The operating temperature of the hearth must be at least 1,000
deg.C at the time it is charged with any PCB-Contaminated non-porous
surface.
(2) Each charge containing a PCB-Contaminated item must be added
into molten metal or a hearth at 1,000 deg.C.
(3) Successive charges may not be introduced into the hearth in
less than 15-minute intervals.
(4) The smelter must operate in compliance with any applicable
emissions standards in part 60 of this chapter.
(5) The smelter must have an operational device which accurately
measures directly or indirectly, the temperature in the hearth.
(6) Take, record and retain at the disposal facility for 3 years
from the date each charge is introduced, a reading of the temperature
in the hearth at the time it is charged with a non-porous surface item.
(c)(1) Scrap metal recovery ovens and smelters must either have a
final permit under RCRA (part 266, subpart H of this chapter and
Sec. 270.66 of this chapter) or be operating under a valid State air
emissions permit which includes a standard for PCBs.
(2) Scrap metal recovery ovens and smelters disposing of PCBs must
provide notification as disposers of PCBs, are not required to submit
annual reports, and shall otherwise comply with all applicable
provisions of subparts J and K of this part, as well as other
applicable Federal, State, and local laws and regulations.
(3) In lieu of the requirement in paragraphs (a) and (b) of this
section, upon written request by the owner or operator of a scrap metal
recovery oven or smelter, the EPA Regional Administrator, for the
Region where the oven or smelter is located, may make a finding in
writing, based on a site-specific risk assessment, that the oven or
smelter does not pose an unreasonable risk of injury to health or the
environment because it is operating in compliance with the parameters
and conditions listed in paragraphs (a)(1) through (a)(8) and (b)(1)
through (b)(9) of this section even though the oven or smelter does not
have a RCRA or State air permit as required by paragraph (c)(1) of this
section. The written request shall include a site-specific risk
assessment.
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