Show simple item record

contributor authorJy S. Wu
contributor authorCraig J. Allan
contributor authorWilliam L. Saunders
contributor authorJack B. Evett
date accessioned2017-05-08T21:24:18Z
date available2017-05-08T21:24:18Z
date copyrightJuly 1998
date issued1998
identifier other%28asce%290733-9372%281998%29124%3A7%28584%29.pdf
identifier urihttp://yetl.yabesh.ir/yetl/handle/yetl/50163
description abstractThree highway segments typical of urban, semiurban, and rural settings in the Piedmont region of North Carolina were monitored to characterize the respective runoff constituent concentrations and pollutant discharge or export loadings. Runoff from the impervious bridge deck (Site I) carried total suspended solids (TSSs) concentrations and loadings that are relatively higher than typical urban highways, whereas nitrogen and phosphorus loadings are similar to agricultural runoff. Site II included a pervious roadside shoulder with traffic volume equal to that of Site I. Site III was a nonurban highway having lower traffic counts and imperviousness due to the presence of a roadside median. The existing roadside shoulder and median appeared to attain at least 10–20% hydrologic attenuation of peak runoff discharges, more than 60% reduction of event mean concentration of TSSs, and attenuation of the first-flush concentrations for most pollutant constituents. Bulk precipitation data collected at the bridge deck site indicated that 20% of TSS loadings, 70–90% of nitrogen loadings, and 10–50% of other constituent exports from the roadway corridors might have originated from atmospheric deposition during dry and wet weather conditions. The long-term highway pollutant loadings have been derived to provide a basis for comparing highway runoff with other categories of nonpoint sources (NPSs).
publisherAmerican Society of Civil Engineers
titleCharacterization and Pollutant Loading Estimation for Highway Runoff
typeJournal Paper
journal volume124
journal issue7
journal titleJournal of Environmental Engineering
identifier doi10.1061/(ASCE)0733-9372(1998)124:7(584)
treeJournal of Environmental Engineering:;1998:;Volume ( 124 ):;issue: 007
contenttypeFulltext


Files in this item

Thumbnail

This item appears in the following Collection(s)

Show simple item record