They are performing real time and continuous air monitoring in the nearby area, which is standard protocol and should alert them to any potential VOCs in the air. If VOCs were at a level where PPE would be recommended I would urge my client (if they were my client) to evacuate the area instead, because PPE isn't a shield, its a band-aid which can prevent short term exposure but not a good long term solution. Air concentrations dissipate quickly radiating outwards, but may be concentrated in a particular wind direction. As long as they maintain this procedure, the town shouldn't need to worry about air exposure, unless wind conditions change. My understanding of the EPA's hesitation was the evaluation of the immediate area of the spill site, which is understandable but the workplan that the Norfolk consultants proposed included the removal of source material in the area. This requires specialized HAZMAT teams if the air in the immediate area of the site still poses an inhalation risk.