77 Batson Drive Manchester, CT 06042 Phone: (860) 643-9560 Email: NEB@gza.com

Sediment Toxicity Testing

Solid-Phase, Suspended-Phase and Bioaccumulation Sediment Tests

Sediments are a major repository for many persistent contaminants introduced into surface waters and concentrations of contaminants in sediments are often several orders of magnitude higher than those in the overlying water

NEB performs a variety of tests to evaluate sediment contamination with the specific methodology depending upon the sediment phase evaluated [whole sediment (solid-phase tests), suspended sediments, elutriates, pore water, and sediment extracts]. Tests with suspended sediments, elutriates, pore waters, and sediment extracts are performed using traditional invertebrate and vertebrate test organisms used for compliance testing. Solid-phase tests are used to assess the toxic effects of whole sediments on invertebrate survival, growth, or reproduction.

New England Bioassay can perform Tier III dredge materials testing in accordance with EPA protocols, and the Army Corps of Engineers Regional Implementation Manual.  NEB has an approved LQAP on file with the New England District Corps of Engineers for biological toxicity testing and bioaccumulation testing. 

NEB offers the following assays:

10-day Solid Phase Bioassay Testing

· Ampelisca abdita

· Leptocheirus plumulosus

· Hyalella Azteca

· Americamysis bahia

· Chironomus dilutus

Suspended Particulate Phase Bioassay (Water Column)

· Americamysis bahia

· Daphnia magna, Daphnia pulex, Ceriodaphnia dubia

· Menidia beryllina

· Cyprinodon variegatus

· Pimephales promelas

· Oncorhynchus mykiss

· Arbacia punctulata

28-day Bioaccumulation Testing

· Nereis virens

· Macoma nasuta