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Additional
First flush
English Wikipedia - The Free Encyclopedia
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First flush
First flush
is the initial
surface runoff
of a rainstorm. During this phase,
water pollution
entering
storm drains
in areas with high proportions of
impervious surfaces
is typically more
concentrated
compared to the remainder of the storm. Consequently, these high concentrations of
urban runoff
result in high levels of pollutants discharged from storm sewers to
surface waters
.
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