• Chicopee Market Square ground breaking

Market Square PCE Groundwater Contamination

Chicopee, Massachusetts

BETA provided the City of Chicopee’s Office of Community Development with engineering and environmental consulting support for the environmental and response actions related to demolition of the former Market Square Building, including stabilization of the party wall with the adjacent Starzyk Building. Subsequent to receipt of a Notice of Downgradient Property Status, BETA was retained to investigate the nature and extent of a historic release of perchloroethylene (PCE) that was detected in groundwater samples from the H.A.P. property located to the northwest. Since that time, indoor air samples have been collected and an IRA plan has been prepared and submitted to MassDEP. The former Market Square Building had reportedly contained the former Wagner’s Cleaners; therefore the property was a suspect source for the release of the dry cleaning solvent PCE.

Subsurface investigations on the former Market Square Building property included soil borings, monitoring well installation, and groundwater sampling. A photoionization detector (PID) was used to field-screen soil samples from borings during the first round of soil borings. On the northern portion of the property, the PID yielded high readings and it was determined through laboratory analysis that there was petroleum-impacted soil in this portion of the site. The PID was used to delineate the source of contamination. The petroleum-impacted soil was then excavated, and disposed of in roll-offs, which were then managed offsite. Groundwater sampling was conducted on-site at a monitoring well installed by BETA, and also at a monitoring well on the H.A.P. property. The groundwater analytical results confirmed that PCE was contaminating the groundwater at the H.A.P. property.

During a second round of soil borings, a PID yielded high readings in the borings located at the northwest portion of the former Market Square property. This area of high readings was delineated by field-screening the soil samples with the PID. Analytical results confirmed that we had located the source of PCE on-site. It is expected that the PCE-impacted soil will be removed in similar fashion to the petroleum-impacted soil.