All correspondence must be made through the Vendor Portal. Specifications include, but are not limited to: This Request for Proposal (RFP) issued by the Delaware Department of Transportation is for the purpose of acquiring Proposals from interested firms to provide water quality monitoring in support of DelDOT's NPDES Permit Program. The services required in this agreement include stormwater quality and best management practices (BMPs) performance monitoring for the DelDOT NPDES program. The need for stormwater monitoring services arises from compliance with the statewide stormwater NPDES program, which includes: (1) a Phase I MS4 Permit for New Castle County; (2) a Phase II MS4 Permit for portions of Kent and Sussex Counties: and (3) maintenance facilities covered by Delaware’s General Permit for Industrial Stormwater Runoff. Services may include wet weather monitoring of designated stormwater outfalls, conveyances and BMPs, illicit discharge detection and elimination, as well as monitoring of streams or other water bodies that are impacted by stormwater discharges.