PAH's, parking lot and roadway sealants, are some of the chemicals found during analysis. Here are several resources for finding out more and what's being done currently in the Senate to address the issue:
How do PAH's get into our waters?
U.S. Department of the Interior, U.S. Geological Survey website
See update on action in US Senate
Here is the package distributed to the Bay Program Toxics Subcommittee which includes the Senate letter requesting the EPA to investigate products containing PAH's. Adobe PDF
Read about Austin, TX solution
List of Alternatives
