Replicated runoff studies to determine the major pathways for transport of pyrethroids applied to suburban residences were conducted at a full scale test facility in central California (described in an earlier presentation). Transport occurred in runoff from lawn irrigation (mostly from water landing on hard surfaces) and natural and simulated rainfall events. Under typical application practices the washoff from the driveway and garage door and wall directly above the driveway resulted in the largest masses of pyrethroids leaving the plot, with losses from applications to the vertical wall above grass, the grass next to the wall, and the lawn being an order of magnitude less. With recently adopted label practices, the washoff from the driveway decreased by more than a factor of ten and the washoff from the garage door and the walls above the driveway were reduced by a factor of five.

Identification of important pathways for residential runoff transport of pyrethroids: Preliminary experimental results

244th National Meeting (2012)

The official archive and repository for all ACS Meetings & Expositions abstracts and select posters or presentations.