Just about everyone is confused when it comes to air quality regulations and how they affect diesel and natural gas standby and prime power generators. Who determines the regulations? Where are they posted? And what support is there for answering questions? Here's a brief overview on the "who, where and what" of air quality rulings and the agencies involved with compliance.
EPA
The Environmental Protection Agency (EPA) sets the standards for federal regulations based on the national Clean Air Act and its amendments. New rulings to the act are regularly reviewed and passed into law. The EPA page for Laws, Regulations, Guidance and Dockets can be accessed at
www.epa.gov/lawsregs/.
When it comes to regulations involving stationary engine emissions, all dealers and end-users of prime and emergency generators need to be familiar with the following rulings set by the EPA. These standards reduce emissions of nitrous oxide (NOx), particulate matter (PM), hydrocarbons (HC) and carbon monoxide (CO) from new and existing prime power and standby engines:
Standards of Performance for Stationary Compression Ignition Internal Combustion Engines(various deadlines determined by engine size and model year)
- To comply, diesel prime power and emergency engines may need to be retrofitted with diesel particulate filters (DPF), diesel oxidation catalysts (DOC) and/or selective catalytic reduction (SCR).
Stationary Spark Ignition Internal Combustion Engines and National Standards for Hazardous Air Pollutants for Reciprocating Internal Combustion Engines - To comply, natural gas engines may need to be retrofitted with oxidation catalysts (OC) or three-way catalysts (TWC).
Control of Emissions from Nonroad Diesel Engines (Tier 4 Regulations)
- To comply, diesel engines may need to be retrofitted with diesel particulate filters (DPF), diesel oxidation catalysts (DOC) and/or selective catalytic reduction (SCR).
National Emissions Standards for Hazardous Air Pollutants for Reciprocating Internal Combustion Engines (RICE NESHAP)
- To comply, diesel and natural gas engines may need to be retrofitted with diesel particulate filters (DPF), diesel oxidation catalysts (DOC) or oxidation catalysts (OC).
Operating Permits – Title V
EPA - RegionsThe ten regional offices of the EPA are responsible for implementing the Agency's programs. Contact your Regional Office directly for answers to your regulatory questions.
Region 1 - CT, RI, MA, ME, NH, VT
Phone: (617) 918-1111
Toll free within Region 1: (888) 372-7341
Region 2 - NY, NJ, PR, VI
Phone: (212) 637-3000
Region 3 - PA, WV, VA, DE, MD, DC
Phone: (215) 814-5000
Toll free: (800) 438-2474
Region 4 - KY, TN, MS, AL, GA, FL, SC, NC
Phone: (404) 562-9900
Toll free: (800) 241-1754
Region 5 - MN, WI, IL, IN, OH, MI
Phone: (312) 353-2000
Toll free within Region 5: (800) 621-8431
Region 6 - NM, TX, OK, AR, LA
Phone: (214) 665-2200
Toll free within Region 6: (800) 887-6063
Region 7 - NE, KS, IA, MO
Phone: (913) 551-7003
Toll free: (800) 223-0425
Region 8 - MT, ND, SD, WY, CO, UT
Phone: (303) 312-6312
Toll free: (800) 227-8917
Region 9 - CA, NV, AZ, HI, Guam, Trust Territories, American Samoa, Northern Mariana Islands
Phone: (415) 947-8000
(866) EPA-WEST (toll free in Region 9)
Region 10 - WA, OR, ID, AK
Phone: (206) 553-1200
Toll free: (800) 424-4372
Click here to find regulatory information related to your EPA region.
EPA - State Agencies
Each state has its own EPA agency. Contact your local agency for air quality information, funding and permitting info related to your state. To find your state EPA,
click here.
California Air Resources Board (ARB)
Considered the most powerful state agency, the California Air Resources Board or ARB often sets the standard for the rest of the country. Established in 1967, ARB has the ability to pass legislature independent of the federal EPA, often finding innovative and progressive approaches to reducing emissions and improving air quality.
Click here to visit ARB's website.
Unlike other states, ARB has 35 regional AQMDs (Air Quality Management Districts), each with the ability to pass their own regulations.
Click here for an interactive map of California's Air Districts and Counties.
Regulations passed by ARB and its individual AQMDs take precedence over EPA rulings in the state of California. All prime power and standby diesel and natural gas engines operating within the state need to check with their regional AQMD concerning regulations and required permitting.
For more information on federal and state regulations, request
a free copy of CleanAIR Systems' digital Emissions Guidebook.