The research is to develop a sheet flow sampler to collect highway washoff and to operate in a highway roadside environment. The proposed sampler is expendable, simple, and cost effective. It will collect a predetermined depth of runoff (most commonly the first 1/2 inch of "first flush"), store it, and be removed and replaced by maintenance workers following rain events. The sampler will be its own vessel for transport of its contents to a laboratory for analysis. Phase I successfully developed, refined, and tested aluminum protoptypes. Phase II will initiate manufacture of plastic injection copies, will extensively field test the device at t a dozen or more highway sites, will develop channels of distribution, and will write operator's field manuals for installation and sample handling.
Anticipated Results/Potential Commercial Applications of Research::The sampler will decrease costs, increase the volume of monitoring data and information for NPDES comliance and for environmental effects evaluation and will enable maintenance workers to be effective implementors. The samplers will be manufactured and sold to SHA and local agencies for their monitoring needs.Key Words: Expendable, sheetflow, sampler, runoff, passive device, water quality
