Complex sentence: Coal ash waste slurry has been piped there from FirstEnergy's Bruce Mansfield Power Plant since 1974, and pollutants including sulfates, chlorides, and arsenic have been found in groundwater nearby.
Split into simpler sentences: Coal ash waste slurry has been piped there from FirstEnergy's Bruce Mansfield Power Plant since 1974. Pollutants including sulfates, chlorides, and arsenic have been found in groundwater nearby.