Loading...
HomeMy WebLinkAboutMansfield Electric Dept. Yard - 4/20/23April 20, 2023 Mansfield Public Health Department Chief Public Health Officer Town Hall, 6 Park Row, 1st Floor Mansfield, MA 02048 Reference: Mansfield Municipal Electrical Department Yard, Mansfield, Massachusetts; Notification of a Permanent Solution Statement With Conditions; RTNs 4-28609 and 4-16123 Ladies & Gentlemen: Pursuant to the Massachusetts Contingency Plan (310 CMR 40.1040), a Permanent Solution Statement With Conditions has been prepared for the above referenced location based on the results of the Method 3 Risk Characterization. A Permanent Solution has been achieved and a Condition of No Significant Risk exists subject to an Activity and Use Limitation (AUL) for the release listed under RTNs 4-28609 and 4-16123. The ALL for the subject property associated with RTN 4-16123 will remain in place. Response actions at this site have been conducted by and on behalf of Mansfield Municipal Electrical Department (MMED). This public notification is being provided pursuant to the Massachusetts Contingency Plan, 310 CMR 40.1090 and 310 CMR 40.1403(3)(f). To obtain additional information concerning this site, a full copy of the statement may be obtained online through the MA DEP online database at: http--(/public.deD.state.ma.us SearchabeSites, Very truly yours, McPHAIL ASSOCIATES, LLC Ambrose ]. Donovan, P.E., L.S.P. N:\Working Documents\lobs\6964\RAM Plan\Letters\6964_Notice to Mansfield Health of PSS_042323.docx MGS/ajd GEOTECHNICAL AND GEOENVIRONMENTAL ENGINEERS 2269 Massachusetts Avenue Cambridge, Massachusetts 02140 (617)868-1420 April 20, 2023 Mansfield Public Health Department Chief Public Health Officer Town Hall, 6 Park Row, 1st Floor Mansfield, MA 02048 Reference: Mansfield Municipal Electrical Department Yard, Mansfield, Massachusetts; Notification of Revised Initial Site Investigation and Tier II Classification; RTN 4-28609 and 4-16123 Ladies & Gentlemen: A release of oil and/or hazardous materials has occurred at this location, which is a disposal site as defined by M.G.L. c, 21E, S.2 and the Massachusetts Contingency Plan, 310 CMR 40.0000, To evaluate the release, a Phase I Initial Site Investigation was performed pursuant to 310 CMR 40.0480. As a result of this investigation, the site has been classified as Tier II pursuant to 310 CMR 40,0500. On February 1, 2022, the Town of Mansfield filed a Tier II Classification Submittal with the Department of Environmental Protection (MassDEP), A revised Tier II Classification was submitted to the MassDEP on April 20, 2023 to link Release Tracking Numbers (RTNs) 4-28609 to 4-16123, which is the former release at the subject property associated with an Activity and Use Limitation (AUL). The Tier II Classification Submittal and the disposal site file can be reviewed at the MassDEP website using RTNs 4-28609 and 4-16123 at http://public.dep.state.ma.us/SearchableSites2/Search.aspx or at MassDEP, Southeast Regional Office, 20 Riverside Drive, Lakeville, Massachusetts, 02347, Phone number: 508- 946-2700, Pursuant to Section 40.1403(3)(e) of the MCP, the following is a copy of the Summary of Findings and Statement of Conclusions section from the above -referenced Phase I Report: An MCP Phase I Initial Site Investigation and Tier Classification, and Phase II Conceptual Scope of Work has been prepared for the MCP site listed under RTN 4-28609 associated with the Mansfield Municipal Electrical Department Yard site that is located at parcel ID 021- 137 in Mansfield, Massachusetts. Our study included a subsurface exploration program, headspace screening of soil samples, laboratory testing of select soil and groundwater samples, and a review of site history. The MCP assessment was conducted in accordance with the Massachusetts Oil and Hazardous Materials Release Prevention and Response Act (MGL Chapter 21E) and in accordance with the Massachusetts Contingency Plan (MCP) (310 CMR 40.0000). Laboratory analysis of soil samples identified concentrations of lead, arsenic, and barium in excess of applicable MCP RCS-1 Reportable Concentrations. Laboratory analysis of groundwater samples did not identify the concentrations of dissolved lead, dissolved arsenic, and dissolved barium in excess of their applicable MCP RCGW-2 Reportable Concentration and also below the applicable Method 1 GW-2 standards. GEOTECHNICAL AND GEOENVIRONMENTAL ENGINEERS 2269 Massachusetts Avenue Cambridge, Massachusetts 02140 (617)868-1420 Mansfield Public Health Department April 20, 2023 Page 2 The presence of the contaminants of concern is considered to be attributable to the historic filling. The full extent of the release conditions will be defined as part of the Phase If Scope of Work. In summary, based on the current laboratory testing, the releases associated with the RTNs 4-28609 and 4-16123 site are not considered likely to affect drinking water or surface water at or in the vicinity of the MCP site. The site is currently a fenced in and paved lot used by the Mansfield Municipal Electrical Department for storage. Access to impacted soil is not feasible at this time. A Release Abatement Measure (RAM) Plan was filled with the MaSSDEP on June 17, 2022 and site -specific Health and Safety Plan was implemented for the proposed development of the site when applicable to manage excavation, handling and off - site re -use or disposal of excavated soils affected by constituents of concern (COCs) associated with RTNs 4-28609 and 4-16123 during the planned redevelopment of the site. Access to the impacted soil is restricted by the commercial structure and concrete slab that covers a portion of the site, and the paved surface surrounding the structure. Neither a condition of Substantial Release Migration nor an Imminent Hazard, both as defined in the MCP, has been identified at the Site. This Phase I Report has been prepared to meet the requirements of the Tier Classification process established in the MCP. The MCP disposal site does not meet the Tier I Criteria specified in Section 40.0520(2) of the MCP. Therefore, the MCP disposal site for which RTN 4-28609 applies is classified as a Tier II MCP Site. The Conceptual Phase II Scope of Work details the proposed additional explorations and laboratory testing to define the extent of the release area, as well as the management of excavation, handling, and off -site reuse of excess excavated soil and groundwater affected by the contaminants of concern. In addition, pursuant to Section 40.1403(6)(b) of the MCP, a copy of the site plan contained in the Phase I Report and a copy of the public notice that will be published in the Boston Herald are enclosed herewith. Additional public involvement opportunities are available under 310 CMR 40.1403(9) and 310 CMR 40.1404. We trust that the above is sufficient for your present requirements. Should you have any questions, please do not hesitate to call us Very truly yours, McPHAIL ASSOCIATES, LLC I Gi Ambrose J. Donovan, P.E., L.S.P. N:\Working Documents\lobs\6964\Phase I TC\2023 Notices\6964_Notice to Mansfield Health of Phase I TC_042023.docx MGS/ajd GEOTECHNICAL AND GEOENVIRONMENTAL ENGINEERS 2269 Massachusetts Avenue Cambridge, Massachusetts 02140