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Grossmont Union High School District
Hazardous Materials Consulting

District Office and School Renovations

Known as “The Castle” from it exterior stone appearance, the Grossmont Union High School District (District) Office was the oldest building in the District, constructed in 1920 and first used as an entire campus school building. Over the years, the building was modified to become the offices for the entire District administrative staff.

Vista Environmental Consulting (Vista) performed hazardous materials consulting services as part of the school modernization project. The modernization activities included a full renovation to the interior and exterior (except for limited areas) including crawl space areas that extended the entire footprint of the two office buildings. Vista’s services consisted of asbestos and lead-based paint survey update testing and daily abatement monitoring during abatement and renovation activities.

Asbestos abatement activities were performed of 3 types of pipe insulation and debris in soil. Based on asbestos pipe insulation debris and cleanup activities performed in the crawl space of the buildings, asbestos soil clearance samples (in addition to air clearance samples) were performed utilizing PLM laboratory analysis, which expedited the process to not fall off schedule. The abatement contractor performed cleanup activities by hand and through the use of a vacuum loader machine.  These abatement and daily monitoring activities were performed at a construction site within an active High School campus with occupied adjacent buildings.

Vista prepared a closeout report documenting the scope of work, progress and successful completion of the project. The report included field documentation, as well as the contractor’s records, government agency notifications, applicable licenses, certifications and completed waste manifests.