Static bench-scale experiments using sections of various types of
iron, galvanized iron, plastic and cementitious pipes showed that chlordane
adsorbed to all pipe surfaces, although cement-lined ductile iron
and polyethylene results were inconclusive. The insecticide demonstrated
strong attachment and a relationship between duration of contaminant
exposure and mass of material attaching to the pipe wall.
Chlordane was selected as a high log Kow chemical surrogate with a
log Kow value of 6.2. Surfactants were found to be effective in removing
organic contaminants from pipe surfaces. The recovery of chlordane
was relatively consistent by pipe material, ranging from 68% for used
galvanized pipe to 120% for epoxy-coated steel pipe