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42 U.S.C. 7401 et seq.
36 FR 24877, Dec. 23, 1971, unless otherwise noted.
70 FR 74907, Dec. 16, 2005, unless otherwise noted.
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Subscribe to: 40 CFR Part 60 Subpart FFFF - Model Rule—Air Curtain Incinerators That Burn Only Wood Waste, Clean Lumber, and Yard Waste
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(a) An air curtain incinerator operates by forcefully projecting a curtain of air across an open, integrated combustion chamber (fire box) or open pit or trench (trench burner) in which combustion occurs. For the purpose of this subpart and subpart EEEE of this part only, air curtain incinerators include both firebox and trench burner units.
(b) [Reserved]
[70 FR 74907, Dec. 16, 2005, as amended at 90 FR 27966, June 30, 2025]
Table 1 of this subpart specifies the final compliance date. You must submit a notification to the Administrator postmarked within 10 business days after the final compliance date in table 1 of this subpart.
(a) If you close your incinerator but will reopen it prior to the final compliance date in your State plan, you must meet the final compliance date specified in table 1 of this subpart.
(b) If you close your incinerator but will restart it after your final compliance date, you must meet the emission limitations on the date your incinerator restarts operation.
You must close the unit before the final compliance date specified in table 1 of this subpart.
(a) Within 180 days after your final compliance date in table 1 of this subpart, you must meet the two limitations specified in paragraphs (a)(1) and (2) of this section.
(1) The opacity limitation is 10 percent (6-minute average), except as described in paragraph (a)(2) of this section.
(2) The opacity limitation is 35 percent (6-minute average) during the startup period that is within the first 30 minutes of operation.
(b) The limitations in paragraph (a) of this section apply at all times.
[70 FR 74907, Dec. 16, 2005, as amended at 90 FR 27966, June 30, 2025]
(a) Use EPA Method 9 of Appendix A to this part or ASTM D7520-16 (incorporated by reference, see § 60.17), to determine compliance with the opacity limitation.
(b) Conduct an initial test for opacity as specified in § 60.8 within 180 days after the final compliance date in table 1 of this subpart.
(c) After the initial test for opacity, conduct annual tests no more than 12 months following the date of your previous test.
(d) If the air curtain incinerator has been out of operation for more than 12 months following the date of your previous test, then you must conduct a test for opacity upon startup of the unit.
[70 FR 74907, Dec. 16, 2005, as amended at 90 FR 27966, June 30, 2025]
(a) Keep records of results of all initial and annual opacity tests in either paper copy or computer-readable format that can be printed upon request, unless the Administrator approves another format, for at least 5 years. You must keep each record on site for at least 2 years. You may keep the records off site for the remaining 3 years.
(b) Make all records available for submittal to the Administrator or for an inspector's review.
(c) You must submit the results (each 6-minute average) of the initial opacity tests no later than 60 days following the initial test. Submit annual opacity test results within 12 months following the previous report.
(d) Before December 29, 2025, submit initial and annual opacity test reports as electronic or paper copy on or before the applicable submittal date. On and after December 29, 2025, within 60 days after the date of completing the initial opacity test and each annual opacity test required by this subpart, you must submit the results of the opacity test following the procedures specified in § 60.3056(b).
(e) Keep a copy of the initial and annual reports for a period of 5 years. You must keep each report on site for at least 2 years. You may keep the reports off site for the remaining 3 years.
[70 FR 74907, Dec. 16, 2005, as amended at 90 FR 27966, June 30, 2025]