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WET-WEATHER POLLUTION PREVENTION BY PRODUCT SUBSTITUTION
Citation:
Clark**, S., R. Pitt, AND R Field*. WET-WEATHER POLLUTION PREVENTION BY PRODUCT SUBSTITUTION. Presented at ASCE Urban Water Resources Research Council/Engineering Foun dation Conf, Snowmass, CO, 8/19-24/2001.
Description:
A literature review of building/construction materials has shown that many of these materials such as galvanized metal, concrete, asphalt, and wood products have the potential to release pollutants into urban stormwater runoff and snowmelt. However, much of this previous research cannot be directly applied to estimating pollutant loadings from runoff. One limitation is that the studies were not performed using actual stormwater runoff. Generally, they were performed using deionized water or acetic acid as the solvent (the USEPA TCLP procedure), although two studies did use seawater as the solvent. A second limitation is that they did not mimic the cyclic wet-dry weathering to which these materials are exposed. The weathering phenomena, which may result in the weakening of the strength of the materials, may impact the release of these pollutants. This paper will discuss a research project that is investigating the pollutant releases from typical materials used for infrasturcture construction, suchg as galvanized metal, road/parking lot asphalt and concrete pavement, shingles, roofing tar, and treated and untreated wood, as these materials are subjected to actual field conditions. Also, the effects of salt-laced snowmelt runoff will be investiaged. Both laboratory-scale and pilot-scale studies will be conducted and will include analyses of the effected runoff for semi-volatile organics, heavy metals, and nutrients.