Beginning in 1973, the EPA ordered a gradual phase out of lead from gasoline that significantly reduced the prevalence of leaded gasoline by the mid-1980s. Shallow soils in highway corridors have the potential to be contaminated with aerially-deposited lead (ADL) due to historic car emissions from automobile exhausts prior to the elimination of lead in gasoline.
Does anyone have some thoughts on how ADL would fit into the language of a Phase I report? I'm not sure if calling it an REC is technically correct. Maybe there is no wrong or right answer here, but I'd appreciate some feedback.