The blank, beige building at 507 N. Industrial Drive, still emblazoned with the words “Braven Environmental,” looks benign from the street.
But on a recent weekend, an interior alarm beeped nonstop, piercing the midday quiet. Around back, past the side doors with a designated smoking area and a sign that read “Caution Respirators Required,” an acrid whiff of old oil wafted from several concrete pits.
Sharp metal parts jutted from barrels. Hunks of blackened machinery moldered nearby…