Air Permitting and Compliance Support for Emergency Diesel Engines in Sacramento County

For California facility owners, installing an emergency diesel engine for backup power or fire protection typically triggers air permitting requirements, as the equipment is regulated as a new source of air pollution. In Sacramento County, the Sacramento Metropolitan Air Quality Management District (Sac Metro AQMD) requires facilities to obtain both an Authority to Construct and a Permit to Operate before installing such equipment. Each application is evaluated against Best Available Control Technology (BACT) standards for nitrogen oxides (NOx), volatile organic compounds (VOC), and particulate matter emissions.

Once permitted, operators must maintain ongoing compliance through recordkeeping and annual reporting for as long as the equipment remains in service. For owners focused on opening, expanding, or modernizing facilities, these requirements are often easy to overlook—until missed obligations place project timelines or compliance status at risk.

FCS and Cameron-Cole support clients across the full lifecycle of these requirements: securing permits to bring new equipment online and managing the recurring compliance activities needed to keep operations running smoothly.

Authority to Construct & Permit to Operate for Diesel Engines in Sacramento County

A national foodservice distribution company expanding its Sacramento-area facility required installation of additional equipment, including a diesel engine–driven fire suppression booster pump. As with any new combustion source in the region, this system required an Authority to Construct and Permit to Operate from Sac Metro AQMD prior to installation.

To meet an accelerated construction schedule, the client engaged ADEC Innovations companies Cameron-Cole and FCS, to prepare and submit the air permit application on an expedited basis.

The project team:

Used manufacturer-provided engine specifications to complete Sac Metro AQMD application forms
Demonstrated that the Tier 3-certified engine met applicable BACT emission standards
Prepared detailed site layout and location drawings to verify setback distances from nearby schools, residences, and commercial propertie
Coordinated an expedited agency review to align with the construction timeline

Through this proactive and coordinated effort, the Permit to Operate was issued with conditions that preserved operational flexibility for both emergency use and routine maintenance testing. As a result, the upgraded fire protection system was permitted and ready in time to support the facility’s expanded operations.

Annual Emissions Reporting Compliance for Sac Metro AQMD Permits

For a global commercial real estate services and investment management firm managing multiple Sacramento-area properties, compliance responsibilities continue well beyond permit issuance. Each permitted engine in its portfolio is subject to Sac Metro AQMD’s Annual Reporting requirement, which applies regardless of occupancy status or development phase.

Rather than maintaining in-house expertise for these evolving regulatory requirements, the client engaged FCS to manage its annual reporting obligations.

FCS provides end-to-end support each reporting cycle by:

Gathering operational data, including hour-meter readings and fuel usage records
Identifying any changes in equipment or operations that may affect reporting
Evaluating each facility against current-year regulatory requirements
Preparing Sac Metro AQMD online reporting forms
Developing a detailed memorandum documenting emission calculations and future tracking considerations

Through this ongoing partnership, FCS serves as a trusted compliance advisor, helping the client maintain consistent regulatory compliance across its Sacramento portfolio while reducing administrative burden and risk.

How we can help

In an ever-changing regulatory and sustainability environment, FCS understands the challenges you face. Our highly qualified environmental specialists, energy management consultants, and technical experts deliver integrated, industry-specific solutions that move your project forward—so that you can focus on what matters.

Get started