PESTICIDE RELEASE IN A SWIMMING POOL
I. BACKGROUND AND STATEMENT OF ISSUES
The Louisiana Department of Agriculture and Forestry (LDAF) contacted the Louisiana Department of Health & Hospitals/Office of Public Health (OPH) for recommendations to protect the health of individuals that might swim in a pool contaminated by pesticides. According to LDAF, approximately 5-pounds of dry Preen® herbicide (1.4% trifluralin) was dumped into a private swimming pool in the city of Pollock, Louisiana on either July 19 or July 20, 1998 . LDAF closed the pool temporarily, while requesting recommendations from OPH.
The pool measured approximately 16 ft. x 30 ft., with a depth of 3 ft .- 8 ft. deep. Two grab samples of the pool water were collected by LDAF on July 20, 1998 from the shallow and deep end of the pool. Trifluralin levels were 129 parts per billion (ppb) in the deep end and 31 ppb in the shallow end of the pool .