This manufacturing facility in Lomazzo, Italy was originally developed in the 1930s as a factory for manufacturing shoe-making tools, and was enlarged over the next several years. Beginning in the 1960s, operations at the facility consisted primarily of production of thermostats, gas valves, sensors, and timers for a number of applications. Manufacturing activities included shearing and molding of metal coils. Processes at the facility involved the use of cooling/cutting oils and perchloroethylene (PCE) as a degreaser.
Manufacturing operations at the facility have since been terminated. After operations at the facility ceased, the current facility owner retained Geosyntec to update an historical site assessment and complete additional site investigation and remediation activities to comply with the applicable Italian regulations in order to prepare the property for potential sale and re-use.
Geosyntec’s Scope of Services
Geosyntec initially completed a soil gas survey for volatile organic compounds (VOCs) beneath the main facility building. We conducted this survey using innovative passive soil gas samplers that we co-developed with the University of Waterloo. We conducted this survey not to comply with regulatory requirements but rather as a way for Invensys to understand the potential distribution of VOCs in the subsurface prior to completion of more invasive subsurface investigation activities. Geosyntec retained a local contractor to deploy the samplers beneath the floor of the building, who then returned the samplers to the United States for chemical analysis and data interpretation by Geosyntec. These samplers have significant advantages over traditional soil gas collection methods (e.g., active collection into canisters or bags) in that they can be deployed directly below a building slab, are less expensive to deploy and analyze, and could be transported easily between the U.S. and Italy.
Subsequently, under the oversight of regulatory authorities in Italy, Geosyntec again retained the local consultant to complete a soil investigation throughout the Site. They collected soil samples from 11 soil borings installed both inside and outside the facility buildings. No exceedances of applicable regulatory standards were identified; however, the regulatory authorities did request removal of three underground storage tanks (USTs) that had been closed in place. During UST removal activities, petroleum contaminated soil was identified beneath one of the USTs. Geosyntec and the local contractor are currently working with the regulatory authorities to identify an appropriate closure approach for this area of the Site. After completion of additional investigation activities to define the extent of petroleum contamination, Geosyntec and our contracting partner will develop a risk-based closure approach (with or without further soil removal) for this area depending on the results of these additional investigations.
Geosyntec’s use of the innovative passive samplers provided the client important insight regarding the nature of potential VOC impacts at the site prior to initiating formal, more intrusive investigation activities. Additionally, use of the passive samplers to conduct this investigation also provided significant cost savings compared to an investigation of similar scope that could have been conducted using traditional sampling techniques. Our close working relationship with the local consultant has provided Invensys with required local regulatory knowledge and contracting ability, accessed through a familiar Geosyntec team with strong technical capabilities and expertise that our client has come to expect.