As part of a larger project to improve exterior waterproofing at the Louisiana State Capitol Building, Leaaf provided asbestos, lead, and polychlorinated biphenyls (PCBs) support services. Historic data for the building indicated that PCBs and asbestos may be present in waterproofing materials in certain locations. Leaaf conducted a comprehensive survey of waterproofing materials for all affected interior and exterior openings to be included in this phase of the renovation, which required over 230 bulk samples. Special care was taken to access secure areas and preserve historic building materials, including original stained glass and bronze fixtures. As a result, the pilot study indicated that asbestos was present in the exterior caulk hidden by the surface caulk, in stone mortar seams, around the windows, and within the window systems.
Based on the findings of the survey, Leaaf provided an asbestos abatement specification to be included in the waterproofing specifications. As the property is a state building, Leaaf followed the specification protocols required in the Louisiana Administrative Code (LAC), Environmental Regulations, Air Quality for Schools and State Buildings (LAC 33: III, Chapter 27). The specifications included written sections and site drawings with the locations of the asbestos-containing materials (ACMs) identified.
Leaaf will continue support the project as it progresses to abatement, to include baseline air samples, area and containment air monitoring, and clearance sampling meeting the regulatory criteria for state buildings.