Stormwater Runoff Quality and Quantity From Traditional and Low Impact Development Watersheds
作者： Erik S. Bedan , John C. Clausen
DOI: 10.1111/J.1752-1688.2009.00342.X
关键词:
摘要: The quality and quantity of residential stormwater runoff from a control, traditional, low impact development (LID) watershed were compared in paired study. A traditional neighborhood was built using typical subdivision standards while LID design constructed with best management practices including grass swales, cluster housing, shared driveways, rain gardens, narrower pervious concretepaver road. Weekly, flow-weighted, composite samples analyzed for nitrate + nitrite-nitrogen (NO 3 NO 2 -N), ammonia-nitrogen (NH total Kjeldahl nitrogen (TKN), phosphorus (TP), suspended solids (TSS). Monthly copper (Cu), lead (Pb), zinc (Zn). Mean weekly storm flow increased (600x) the postconstruction period. Increased exports TKN, -N, NH TP, Cu, Zn, TSS associated flow. Postconstruction reduced by 42% peak discharge did not change preconstruction conditions. Exports Pb, TP increased.
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