Overview
USEPA Region 1 Lab in Chelmsford, Massachusetts, is an operational air monitoring station reporting to the Massachusetts Department of Environmental Protection. It is part of the US EPA's national air quality monitoring network.
USEPA Region 1 Lab is an air monitoring station located at 11 Technology Drive in Chelmsford, Massachusetts, within Middlesex County. Operated under the US EPA's New England Regional Laboratory, this facility is part of the national Air Quality System (AQS) network, which monitors criteria pollutants and other atmospheric parameters to ensure compliance with the Clean Air Act. The station reports to the Massachusetts Department of Environmental Protection's Division of Air Quality Control, with the most recent sample date recorded as August 31, 2025. As a regulatory monitoring site, it likely measures pollutants such as ozone, particulate matter, nitrogen dioxide, and sulfur dioxide, following EPA-approved methods and quality assurance protocols. The facility's siting in a suburban area provides representative data for population exposure assessment. This monitoring station contributes to the regional air quality management framework in New England, supporting public health protection and environmental policy. Data from this site helps track long-term trends, inform air quality alerts, and evaluate the effectiveness of emission reduction strategies in the densely populated Boston metropolitan area.
Environmental context
The Chelmsford area is part of the Boston metropolitan region, which experiences moderate air pollution from transportation, industrial sources, and power generation. The USEPA Region 1 Lab monitors criteria pollutants under the National Ambient Air Quality Standards (NAAQS), providing critical data for assessing compliance and protecting public health. Its location in a suburban setting offers representative sampling for population exposure, while its affiliation with the EPA's regional laboratory ensures high-quality data collection and analysis.
Frequently asked questions
USEPA Region 1 Lab is located at 11 Technology Drive in Chelmsford, Massachusetts, within Middlesex County, United States.
As an air monitoring station, it monitors criteria air pollutants such as ozone, particulate matter, nitrogen dioxide, and sulfur dioxide as part of the US EPA's Air Quality System network.
The station is operated by the US EPA's New England Regional Laboratory and reports to the Massachusetts Department of Environmental Protection's Division of Air Quality Control.
The station operates under the US Clean Air Act and follows EPA's Air Quality System (AQS) standards for monitoring, quality assurance, and data reporting.
It provides continuous air quality data that supports compliance assessments, public health alerts, and long-term trend analysis for the Boston metropolitan region.
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