Abstract
Loading of Dissolved Organic Carbon (DOC) through storm runoff from parking lots is a significant, yet relatively neglected, source of elevated DOC concentration in urban streams during storm events. This study investigated DOC transport and loading from an paved parking lot during rainstorm events in order to elucidate impacts of the stormwater runoff on the chemistry of an urban stream. Water samples were collected from a drain in the parking lot of a shopping mall during 14 selected rainstorm events in 1999–2000. DOC concentration analysis was performed using a TOC analyzer. Measurements of DOC from the parking lot showed that period between storms and the precipitation intensity control the maximum DOC concentration (C DOC, max ) and the time required to reach C DOC, max (τ DOC, max ), respectively. DOC loading from the parking lot was also estimated. The results can be valuable for prediction of DOC loads to urban streams.
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