Accession Number : ADA325328

Title :   Toxicity Evaluation of Contaminated Groundwater at Aberdeen Proving Ground-Edgewood Area West Branch of Canal Creek Phase 1: Groundwater Evaluation.

Descriptive Note : Interim rept.,

Corporate Author : WYE RESEARCH AND EDUCATION CENTER QUEENSTOWN MD

Personal Author(s) : Burton, Dennis T. ; Herriott, Randall S. ; Turley, Steven D.

PDF Url : ADA325328

Report Date : 20 MAR 1997

Pagination or Media Count : 217

Abstract : Contaminated groundwater, which contained multiple heavy metals and chlorinated aliphatic hydrocarbons, from the Canal Creek aquifer (well CC-27B) of the U.S. Army Aberdeen Proving Ground-Edgewood Area, Aberdeen, Maryland, was evaluated for toxicity to aquatic organisms. Toxicity was detected at various groundwater concentrations by 6 of 8 biomonitoring systems. The lowest concentration of groundwater that caused no observable adverse effect (NOEC) at pH 4 was 10% ground water by volume in the following assay: 4-d green alga Selenastrum capricornutum) growth test; 7-d cladocaran (Ceriodapnia dubia) survival and reproduction test; and 96-h frog (Xenopus laevis) embryo teratogenesis assay - Xenopus (FETAX). A NOEC of 18% groundwater volume occurred in 7-d fathead minnow (Pimephales promelas) survival and growth tests. Buffered groundwater (pH 7) was less toxic and/or not toxic in 7-d fathead minnow tests and in FETAX assays. The 10% groundwater by volume NOECs for the green alga and cladoceran at pH 4 did not change when the organisms were exposed to buffered groundwater at pH 7. The Ames assay for mutagenicity was negative in all cases. Sporadic incidences of lesions were found in Japanese medaka(Oryzias latipes) at concentrations up to 25% groundwater by volume after 9 months of exposure.

Descriptors :   *TOXICITY, *GROUND WATER, *WATER POLLUTION, *CONTAMINATION, *CHLORINATED HYDROCARBONS, TEST AND EVALUATION, BUFFERS, MARYLAND, WATER, GROWTH(GENERAL), SURVIVAL(GENERAL), AQUIFERS, ADVERSE CONDITIONS, TERATOGENIC COMPOUNDS, EMBRYOS, AQUATIC ORGANISMS, ASSAYING, CONCENTRATION(CHEMISTRY), FISHES, STREAMS, ALIPHATIC HYDROCARBONS, CANALS, HEAVY METALS.

Subject Categories : Organic Chemistry
      Water Pollution and Control

Distribution Statement : APPROVED FOR PUBLIC RELEASE