ORIGINAL RESEARCH
Suspended Solids Concentration in Highway
Runoff during Summer Conditions
M. Hallberg, G. Renman
Royal Institute of Technology, Teknikringen 76, SE-100 44 Stockholm, Sweden
Pol. J. Environ. Stud. 2008;17(2):237–241
KEYWORDS
ABSTRACT
One treatment practice for storm water is detention of the initial part of the runoff that is considered to contain
the highest concentration of pollutants. This study has evaluated the concentration of total suspended solids
(TSS) in 44 consecutive runoff events from a highway watershed. The effluent TSS standard for wastewater of
60 mg/l applied in the EU was used to assess the required treatment. In 35 of the runoff events the TSS partial
event mean concentration exceeded 60 mg/l for the duration of the runoff event. Thus, a partial capture of the
runoff volume should not be used as a treatment option in similar conditions that prevailed in this study.
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