Pesticides are a substance or mixture of substances intended for preventing, destroying, repelling, or mitigating pest. Pesticides can contaminate soil, sediments, water, and other vegetation.
Section 1.2.9 (Pesticides)
There is some evidence that past pesticide formulations contained 1,4-dioxane as an inert ingredient, including in the range of 20%–50% of the formulation.
Incorporating Bioavailability Considerations into the Evaluation of Contaminated Sediment Sites (CS-1)
Appendix B- Categories of Contaminants (Pesticides Section)
Discusses general information about pesticide contamination and how it reacts in sediments.