Environmental Investigation and Remediation: 1,4-Dioxane and Other Solvent Stabilizers by Thomas K. G. Mohr, coming soon from CRC Press. Where there are solvent spills, there could well be 1,4-dioxane. This chemical is widespread, but not widely written about — until now.
(Disclaimer: I work with Tom and have helped with his research on various topics.)
Posted by waterlibrarian 
