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Site Background

The Site is located at 430 Boston Post Road in Wayland, Massachusetts, and encompasses 83 acres, including 32 acres of wetlands and 41 acres of undeveloped grass and woodlands. It is adjacent to the Sudbury River, contiguous with the Great Meadows National Wildlife Refuge, bounded by Route 27 to the east and Route 20 to the south. The Site is located approximately one-half mile south of the Baldwin Pond supply wells within the Zone II Aquifer Protection District. The Site was formerly operated as a research and design facility by Raytheon Company and is presently a vacant office park.

Extensive investigative activities have been conducted at the Site since 1995. Results of these efforts are presented in a series of reports, which indicated environmental impacts to soil, groundwater and wetlands. These impacts do not currently pose a human health or public safety risk. Through continued, diligent assessment and remediation activities, Raytheon continues to demonstrate its commitment to the remediation of the Site and the protection of natural resources.

Site activities are documented under two separate Release Tracking Numbers (RTNs):

RTN 3-13302* includes activities associated with assessment and remediation of the:

  • heavy metals, polychlorinated biphenyls (PCBs), and polyaromatic hydrocarbons (PAHs) impacts in wetlands located in the western portion of the Site; and
  • chlorinated volatile organic compounds (CVOCs) and chromium impacts to groundwater in the southern portion of the Site.

    RTN 3-22408 includes activities associated with assessment and remediation of the:

  • CVOC and toluene impacts to groundwater in the northern portion of the Site;
  • arsenic in groundwater beneath the wetlands and western portion of the Site; and
  • methyl tert butyl ether (MTBE) in groundwater in the southern portion of the Site.

    Reports, public involvement presentations and other Site related documents are available on this website under the Documents section as well as the Public Repositories in the Wayland Public Library and Wayland Board of Health. For detailed Site history and background, please refer to the Phase I and/or Phase II reports for each RTN.

    *Several RTNs (3-1783, ERB-N-92-1340, 3-13302, 3-13574, 3-14042, 3-19482) are linked to and tracked under RTN 3-13302. All pertinent documents are included under RTN 3-13302.

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