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Kimley>>>Horn <br />Page 3 <br />category or subcategory of major sources and area sources of HAPs [listed pursuant to Section <br />112(c)]. The standards must require the maximum degree of emission reduction that the EPA <br />determines to be achievable by each particular source category. Different criteria for maximum <br />achievable control technology (MACT) apply for new and existing sources. Less stringent <br />standards, known as generally available control technology (GACT) standards, are allowed at the <br />Administrator's discretion for area sources. <br />Categories which formaldehyde is regulated under the NESHAP: <br />• Plywood and composite wood products <br />• Vehicle emissions <br />• Wet formed fiberglass mat production <br />• Mineral wool production <br />• Wool fiberglass manufacturing <br />• Manufacture of amino/phenolic resins <br />• Wood furniture manufacturing operations <br />• Rubber tire manufacturing <br />• Natural gas transmission and storage facilities <br />• Synthetic organic chemical manufacturing industry <br />• Organic liquid distribution operations <br />• Taconite iron ore processing <br />• Emissions for polyvinyl chloride and copolymers production <br />• Oil and natural gas production facilities <br />Control of Hazardous Air Pollutants from Mobile Sources. Section 202(1) of the Clean Air Act <br />requires the EPA to set standards to control hazardous air pollutants from motor vehicles, motor <br />vehicle fuels, or both. The 2007 Control of Hazardous Air Pollutants from Mobile Sources rule <br />allows EPA to regulate emissions of hazardous air pollutants, including formaldehyde, from <br />highway vehicles and non -road equipment. Such regulations are found at 40 CFR Part 85. <br />Additional information can be found at: https://www.epa.gov/formaldehyde/laws-and- <br />regu lations-concerning-formaldehyde <br />CARB Airborne Toxic Control Measure. Formaldehyde in composite building materials has been <br />regulated by CARB since 2009 (refer to Sections 93120-93120.12, Title 17, California Code of <br />Regulations). The regulation got progressively stricter between 2009 and 2014, CARB's regulation <br />requires use of the best available control technology. <br />As noted above, there are various regulations that address formaldehyde concentrations. The <br />approach and analysis in the comment is not consistent with CARB's approach for regulating building <br />materials, as CARB has their own regulations for reducing health risk from formaldehyde emissions <br />from building materials. <br />714 939 103D <br />