Federal Register #2026-10642

EPA Approval of Air Quality Compliance Plan for Caterpillar Oil-Fired Engines at Big Six Towers Inc.

The Environmental Protection Agency (EPA) is proposing to approve a revision to New York's State Implementation Plan (SIP) for Big Six Towers Inc. in Woodside, Queens, NY, focused on air quality compliance for oil-fired engines. - Government Buyer: - Environmental Protection Agency (EPA), Region 2, Air Programs Branch - OEMs and Vendors: - Caterpillar (manufacturer of the engines in question) - Products/Services Requested: - Three oil-fired internal combustion engines at Big Six Towers Inc. (two Caterpillar D399, one Caterpillar D3516) - D399: 850 kW (2 units) - D3516: 1,600 kW (1 unit) - Emissions monitoring, reporting, and recordkeeping services for these engines - Includes periodic stack testing, semi-annual reporting, and maintenance per manufacturer specifications - Unique/Notable Requirements: - Alternate NOx emission limit of 5.0 grams per brake horsepower-hour (g/bhp-hr) for the three engines, higher than the standard 2.3 g/bhp-hr, based on feasibility - Ongoing compliance monitoring, with semi-annual reporting and five-year record retention - Periodic stack testing required, with protocols submitted 90 days in advance - Requirements become federally enforceable upon approval - Further NOx controls (e.g., selective catalytic reduction) deemed not cost-effective for this application - Opportunity may interest vendors of emissions monitoring, stack testing, and air quality compliance solutions

Description

The Environmental Protection Agency (EPA) is proposing to approve a revision to the State of New York's State Implementation Plan (SIP) related to ozone standards for Big Six Towers Inc., located at 59-55 47th Ave., Woodside, NY. This revision implements Reasonably Available Control Technology (RACT) for three oil-fired engines at the facility to control nitrogen oxides (NOx) emissions. The EPA proposes to approve an alternate NOx emission limit of 5.0 grams per brake horsepower-hour for these engines, along with monitoring, reporting, and recordkeeping requirements. Written comments on this proposed rule are due by June 29, 2026.

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