"But this investigation has nothing to do with who ordered the shutdown. It focuses instead on why an air-quality monitor closest to the bridge was inoperative for a few days during the lane closures, when drivers were stuck in a massive traffic jam for hours on the busiest motor vehicle bridge in the world, spewing pollution into the air.
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“Why should people care? The monitor is used to measure the amount of fine particulates in the air, a dangerous pollutant from trucks, cars and buses. The state only recently achieved compliance with federal air quality standards that safeguard human health—decades after the Clean Air Act was enacted.”