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Code of Federal Regulations (Last Updated: April 5, 2024) |
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Title 40 - Protection of Environment |
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Chapter I - Environmental Protection Agency |
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SubChapter C - Air Programs |
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Part 63 - National Emission Standards for Hazardous Air Pollutants for Source Categories |
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Subpart AAAA - National Emission Standards for Hazardous Air Pollutants: Municipal Solid Waste Landfills |
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General and Continuing Compliance Requirements |
§ 63.1965 - What is a deviation?
Latest version.
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§ 63.1965 What is a deviation?
A deviation is defined in § 63.1990. For the purposes of the landfill monitoring and SSM plan requirements, deviations include the items in paragraphs (a) through (c) of this section.
(a) A deviation occurs when the control device operating parameter boundaries described in 40 CFR 60.758(c)(1) of subpart WWW are exceeded.
(b) A deviation occurs when 1 hour or more of the hours during the 3-hour block averaging period does not constitute a valid hour of data. A valid hour of data must have measured values for at least three 15-minute monitoring periods within the hour.
(c) A deviation occurs when a SSM plan is not developed or maintained on site.
[68 FR 2238, Jan. 16, 2003, as amended at 71 FR 20462, Apr. 20, 2006]