Public health assessment, Cayuga County groundwater contamination, towns of Aurelius, Fleming, & Springport, Cayuga County, New York /

"June 11, 2003; CERCLIS No. NYN000204289."

Public health assessment, Hudson Technologies, village of Hillburn, Rockland County, New York /

"CERCLIS No. NY0001392463."

Public health assessment, Old Roosevelt Field Contaminated Groundwater Area, town of Hempstead, Nassau County, New York /

"CERCLIS number NYSFN0204234."

Public health assessment, Cayuga County groundwater contamination, towns of Aurelius, Fleming & Springport, Cayuga County, New York /

"September 30, 2002; CERCLIS Number NYN000204289."

Public health assessment, Mohonk Road Industrial Plant site, High Falls, Ulster County, New York /

"February 1, 2001; Cerclis No. NYD986950012."

Public health assessment, Old Roosevelt Field Contaminated Groundwater Area, town of Hempstead, Nassau County, New York /

"July 13, 2004; CERCLIS Number NYSFN0204234."

Public health assessment, Hudson Technologies Inc., village of Hillburn, Rockland County, New York /

"CERCLIS No. NY0001392463."

An investigation of a volatile organic chemical plume in northern Winnebago County, Illinois /

"August 1984."

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Cover title.

Economic impact study of proposed cross connection regulations, R87-37 : final report /

"Project: 89/283."

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U.S. EPA regulations have changed the focus of lead and copper monitoring.

Caption title.

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Reuse of record except for individual research requires license from Congressional Information Service, Inc.

Intervention Trial to Assess Arsenic Exposure from Food Crops in Bangladesh

The authors assessed the contribution of food irrigated with arsenic-contaminated water to human exposure to arsenic in Bangladesh. An intervention trial was conducted in a village in the Jessore District of Bangladesh, where irrigation water had been field-tested in March 2000 and was found to contain arsenic with concentrations ranging from 100 to 500 mu g/l. In May 2000, a random sample of 63 households was selected from the village, and I eligible person from each household was recruited to the study and randomized to an intervention or control group. The intervention group received food purchased from a village where irrigation water was found to contain 100 mu g/l arsenic. Pre- and postintervention urine samples were collected for urinary arsenic speciation assays. Preintervention, the mean urinary total arsenic concentrations were 139.25 mu g/l and 129.15 mu g/l for the intervention and control groups, respectively. These concentrations did not change significantly following intervention. Arsenic concentrations in samples of selected raw and cooked foods from the low-contamination area did not contain less arsenic than samples from the high-contamination area. Further studies to investigate the arsenic content of food grown in areas with high and low arsenic contamination of irrigation water are recommended.

Biodegradation of the cyanobacterial toxin microcystin LR in natural water and biologically active slow sand filters

A bacterium (MJ-PV) previously demonstrated to degrade the cyanobacterial toxin microcystin LR, was investigated for bioremediation applications in natural water microcosms and biologically active slow sand filters. Enhanced degradation of microcystin LR was observed with inoculated (1 x 10(6) cell/mL) treatments of river water dosed with microcystin LR (> 80% degradation within 2 days) compared to uninoculated controls. Inoculation of MJ-PV at lower concentrations (1 x 10(2)-1 x 10(5)cells/mL) also demonstrated enhanced microcystin LR degradation over control treatments. Polymerase chain reactions (PCR) specifically targeting amplification of 16S rDNA of MJ-PV and the gene responsible for initial degradation of microcystin LR (mlrA) were successfully applied to monitor the presence of the bacterium in experimental trials. No amplified products indicative of an endemic MJ-PV population were observed in uninoculated treatments indicating other bacterial strains were active in degradation of microcystin LR, Pilot scale biologically active slow sand filters demonstrated degradation of microcystin LR irrespective of MJ-PV bacterial inoculation. PCR analysis detected the MJ-PV population at all locations within the sand filters where microcystin degradation was measured. Despite not observing enhanced degradation of microcystin LR in inoculated columns compared to uninoculated column, these studies demonstrate the effectiveness of a low-technology water treatment system like biologically active slow sand filters for removal of microcystins from reticulated water supplies. Crown Copyright (c) 2006 Published by Elsevier Ltd. All rights reserved.