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#contaminated soils or sites with high risk of contamination from on-site activities (i.e. pollution hot spots),
#contaminated soils or sites with high risk of contamination from on-site activities (i.e. pollution hot spots),
#in areas of known or implied karst topography,
#in areas of known or implied karst topography,
#on unstable or steep slopes (15 to 20%),
#on unstable or steep slopes (>15%),
# to treat construction site runoff,
# to treat construction site runoff,
#to treat combined sewer overflows,
#to treat combined sewer overflows,