Publications & Fact Sheets

What they are, where they come from, how they affect our health and the environment, and what state government is doing to address them.

Documents that provide the framework for, and summarize the results of, state efforts to reduce air pollution and minimize its environmental and public health effects in Massachusetts.

Permit applications, reporting forms and instructions for facilities and activities generating emissions that contribute to air pollution and climate change.

Find current pollution levels, graph recent air monitoring data, or download detailed ambient air monitoring data from the MassDEP statewide network of air monitoring stations.

Yearly summaries of data obtained from the MassDEP statewide air monitoring network.

Provides an overview of the MassDEP statewide network of air monitoring stations - including monitoring sites, parameters measured and rationale - and describes recent or planned changes.

Six large Massachusetts power plants can earn credits toward compliance with emission standards through projects that avoid, reduce or trap greenhouse gases.

Operating Certification for Central Artery/Tunnel Ventilation System.

These reports periodically quantify Massachusetts emissions of criteria pollutants: ammonia, carbon monoxide, nitrogen oxides, ozone, particulate matter, sulfur dioxide and volatile organic compounds.

Links to applicable environmental statutes.

Economy-wide greenhouse gas emissions reduction goals for Massachusetts.

Learn about climate change, what Massachusetts is doing to reduce greenhouse gas emissions, and how you can help at home, at work and in your car.

Common air pollutants can affect sensitive populations including children, seniors and people with respiratory problems - and even active, healthy adults when pollution levels are high.

All new passenger vehicles sold and registered in Massachusetts need to meet California emission standards. Learn more about these requirements and what they mean for you.

This program equips all eligible diesel-powered school buses with pollution-cutting retrofits at no expense to bus owners.

A number of businesses and educational institutions in the state are required to develop plans and set goals for reducing commuter drive-alone trips by 25 percent.

Annual reports, newsletters and other publications documenting the activities and results of the state's motor vehicle safety inspection and emissions test program.

Most waste-to-energy facilities in Massachusetts are required to submit periodic emissions reports to MassDEP and notify the agency when their emissions exceed applicable limits.

Local fire departments in most of the state's towns and cities permit limited burning of tree limbs, brush and other forestry debris between January 15 and May 1 of each year.

Documents interpreting MassDEP regulations and how to comply with them.

Information is available for a variety of pollutants, sites and time periods.

Plans that demonstrate how facilities will comply with requirements that they use pollution control technologies to reduce emissions of specific air pollutants.

MassDEP rules implementing state and federal environmental legislation.

MassDEP is working with school districts across Massachusetts to promote practical and effective ways of reducing children's exposure to diesel engine exhaust.

Annual online filing information and instructions for facilities that exceed specific energy use or potential emission thresholds and are subect to Source Registration requirements.

Parking Space Inventory and conditional finding of adequacy on the Parking Freeze Plan.

Most Massachusetts gas stations are equipped with special nozzles, hoses and pumps to capture gasoline vapors displaced while vehicles are being refueled, thus preventing air pollution.

SIPs describe the control measures being implemented to reduce emissions of specific pollutants in Massachusetts and document the state's progress in attaining national ambient air quality standards.

Select from a variety of air pollutants, locations and time periods to develop custom graphs showing emission trends over time.

Motor vehicles, engines and fuels are among the leading contributors to air pollution in Massachusetts.