TM97-11 New Approved Method for VOCs

The National Water Quality Laboratory (NWQL) determines volatile organic compounds (VOCs) in water samples through a variety of schedules with differing reporting limits and lists of constituents. Recently the National Water Quality Assessment (NAWQA) Program requested a new VOC method for a large number of constituents at substantially lower reporting limits than existing methods. In response to this need, the NWQL developed a custom method that reports 86 constituents at low concentrations. This custom method is now an approved U.S. Geological Survey method.