TN&A helps clients avoid air-permitting delays during the planning and implementation of facility improvements. Through reviewing the specific facility expansion plans and identifying potential permitting requirements, TN&A provides strategies that achieve the expansion goals, provide operational flexibility, and either meet new source permitting requirements or avoid the need for a permit. Our vast experience includes design and implementation of air monitoring plans at Superfund sites and several former manufacturing gas plants.
TN&A uses stack testing and air dispersion modeling to demonstrate compliance with air emission limits. For a Wisconsin industrial facility, TN&A used an innovative stack-testing method approved by regulatory officials to demonstrate compliance with formaldehyde emission limits. Previous stack testing at the facility, using conventional methods, inaccurately indicated high emissions. Through TN&A’s innovative testing, the facility complied with regulated emission limits.
At the former Barrie Park manufactured gas plant in IL, TN&A conducted perimeter air monitoring and sampling during remediation activities to protect the nearby residents from exposures of Polychlorinated Biphenyls (PCB) and Volatile Organic Compounds (VOC) in soil. Specific tasks included preparation and implementation of an air monitoring plan and a health and safety plan, air monitoring for VOCs with TVA-1000, particulate monitoring with PDR, and air sampling.
TN&A also performed metrological monitoring and perimeter air sampling services at the Velsicol Superfund Site during the remediation of contaminated sediments. The site is a former pesticide packaging facility located in a residential area with polybrominated biphenyls (PBB), pesticides, and VOC contamination in the subsurface soils and river sediments. TN&A assessed dust control and practices and evaluate exposure risks to residences. TN&A installed a MetOne Metrological station equipped with sensors placed on a 10-meter tower and 4 fixed sampling stations along the site perimeter to capture upwind and downwind exposure scenarios. Each station was equipped with a high volume sampler for total suspended particulates, low-volume sampling train for PBB and pesticides, and an evacuated Summa-passivated canister designed to operate over the 10-hour working day.
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