Permit Toxicity Testing

Acute Fish and Daphnia Bioassays

  • Rainbow trout 96-hour LC50 test or LT50 test
  • Daphnia magna (water flea) 48-hour LC50

Routine Bioassays for Government Permit Compliance (Environment Canada, WET, NPDES)

  • Freshwater tests
  • Daphnia magna and fathead minnow (Pimephales promelas)

Chronic Saltwater Tests

  • Topsmelt (Atherinops affinis) and mussels (Mytilis edulis) according to EPA guidelines
  • Chronic and Sublethal Aquatic Toxicity Evaluations
  • Salmonid Early Life Stage Development Tests
  • 7-day Embryo Alevin Test (E test)
  • 30-day Embryo Alevin Test (EA test)
  • 90-day Embryo Alevin Fry Test (EAF test)
  • 7-day Ceriodaphnia dubia Survival and Reproduction
  • 21-day Daphnia magna Survival and Reproduction
  • 7-day Growth and Survival of fathead minnow, topsmelt or silverside
  • 72-hour Freshwater Algal Growth Inhibition (Selenastrum capricornutum)
  • Echinoderm Larval Development

Microtox® Testing The Microtox® Test uses a marine bacteria, Vibrio fischeri to examine potential effects to water, sediment and soil microbes.

  • Liquid Phase
  • Solid Phase

Note: Chronic Microtox® and Mutatox® tests are no longer supported by the manufacturer.

Toxicity Investigations for Industry and Government #80-12

  • Designation of Dangerous Waste #80-12 To determine if a waste meets the definition of dangerous waste, the Washington Department of of Ecology (WDOE) requires a static acute fish toxicity test, which MAXXAM can perform.
  • Antisapstain Tests for British Columbia – 0459X542 To determine if stormwater effluent from areas with treated lumber is acutely toxic, an acute 96-hr LT50 fish bioassay is required.
  • Ocean Disposal Testing – CEPA 1999 Some material that is disposed of in the ocean may adversely affect marine organisms. MAXXAM analyzes sediment samples for acute and sublethal toxicity using three recommended tests: – Solid phase Microtox® – 10-d marine amphipod – Echinoderm fertilisation