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The surface water and surficial-bed material at seven stations on three streams in Logan Township, Gloucester County, New Jersey, were sampled in the fall of 1984. Samples of water were analyzed for volatile organic compounds, trace metals, and organochlorine and organophosphorous compounds. Surficial-bed material was analyzed for extractable trace metals and organochloroine compounds. Water samples from two closely spaced sampling locations along Raccoon Creek contained elevated concentrations of methylene chloride, a volatile organic solvent. Bed-material samples taken from Little Timber and birch Creeks contained elevated levels of trace metals and organochlorine compounds, including polychlorinated biphenyls (PCB's). contaminant concentrations in bed-material samples taken from Raccoon Creek were much lower than those found previously by the US Geological Survey in 1980. Only a trace of PCB's was detected in any bed material sample taken from Raccoon Creek. Gas chromatographic flame-ionization detector scans, performed on solvent extracts of all water and sediment samples, were useful in characterizing the presence or absence of organic contaminants in those samples. Changes in the character of organic contamination along the reaches of two streams were apparent when the fingerprints of chromatograms representing upstream sites were compared to those representing downstream sites. 23 refs., 7 figs, 7 tabs.

Quality of water and bed material in streams of Logan Township, Gloucester County, New Jersey, 1984