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Mass Removal Events

The mass removal events are typically tailored for projects with limited (manageable onsite) impact or for sites that are impacted significantly (with receptors nearby). SVE, DPE, ozone injection, and batch groundwater extraction are some of the most commonly used technologies during the mass removal events. Mass removal events, where applicable, are more cost effective than full scale active remediation, and becomes a regulatory negotiation tool along with RBCA and trend analysis. Availability of power, length of remediation required, and cost are the key criteria in mass removal events. Stratus has completed several mass removal events with durations varying from a couple of weeks to up to a year.

Within 2 months of being retained for environmental services, Stratus completed a 1 month SVE mass removal event at a former gasoline service station in San Jose, CA, that resulted in the site being considered for case closure by the overseeing regulatory agency. At a similar SVE mass removal event executed at a site in Marysville, CA, Stratus elected to procure electrical service (rather than use a generator) within 45-days that resulted in at least $25,000 cost savings (generator and fuel) to our client.