FRESHWATER AQUATIC CRITERIA DEVELOPMENT AND TOXICITY TESTING

Abstract

Aquatic toxicity testing was completed on a number of compounds/elements to supply the necessary data for preparation of Criteria Documents in 1986. The compounds/elements tested included hexachlorobenzene, selenium IV & VI, silver, l ,2,4-trichlorobenzene, and 2,4,5-trichlorophenol. In addition, the analytical procedure and exposure apparatus were developed and refined for bis (2-ethylhexyl) phthalate, but toxicity tests were not performed. Procedures outlined in EPA's Environmental Effects Test Guidelines (1982) were followed where possible. For test species that were not covered under EPA-recommended protocols, existing recommended protocols for similar organisms were used along with any necessary modifications for the particular species being tested. The Standard Operating Procedures developed and used for these non-traditional species tests are given in Appendix I to this section. A report of the aquatic toxicity testing for each compound/element follows. In each case, background, methods, results, and references are given.