Legend (SoundTransit/SoundTransit_TacomeSmelterPlume)

Sample Location with Arsenic Concentrations Greater than 20 mg/kg (0) Sample Location with Arsenic Concentrations Less than 20 mg/kg (1) Arsenic Concentrations (Tacoma Smelter Plume) (2) Under 20 ppm 20 ppm to 40 ppm 40.1 ppm to 100 ppm Over 100 ppm Limited Data