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Internal Combustion Engines 

If you plan to install or operate any kind of diesel fired stationary or portable engine greater than 50 horsepower within the 3 counties of this Air District, then you will need to obtain a Permit to Operate. 

All generators, regardless of fuel type, emit toxic gases in their exhaust. Always operate any combustion source in a well-ventilated environment. Follow ALL of the manufacturer's safety precaustions. 

 

What is a Internal Combustion Engine? 

 Typically used for stationary or portable non-mobile engines running machinery or standby generators. 

Doesn't the district permit generators? 

No, we actually permit the engine that powers the generator. Knowing the manufacturer, model, year, etc. is important for filling out your supplemental form. 

What if the diesel engine is less than 50 horsepower running a generator? 

No permit to operate is needed. 

What about permitting non-diesel engines running a generator? 

At this current moment, the district does not permit non-diesel engines. If you have a propane, natural gas, or gasoline, you are not subject to a permit to operate. HOWEVER, the fuels previously mentioned can be permitted if placed at a Stationary Source Facility. 

Is there a restriction on Tier levels? 

Yes, if it is a prime power. Tier 4 final or tier 4 will be expected. 

No, if it is for emergency use. No tier restriction. 

Forms and Payment 

Two forms are needed to be submitted to deem the application process potentially complete with the filing fee payment:  

  1. Permit Application Form 
  2. Internal Combustion Engine Supplemental Form
  3.  Rule 603(A)(1)(a) Stationary Source, Filing Fee ( Please contact the district first before paying.) 
  4. Optional:  Emissions, manufacturer data sheet, EPA family certification, etc. (This all helps process your application faster)
Instructions-for-the-Permit-Application-Form.pdfPermit_Application_Form.pdfICE-Supplemental-Form-short-version_FILLABLE.pdf
Air Toxic Control Measure 

The Air Resources Board adopted an air toxic control measure (ATCM) for stationary diesel engines. Each local air district implements the ATCM.

 

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