This research found evidence of an association between occupational exposure to bioaerosols in composting plants and health outcome occurrence in exposed workers. An occupational exposure assessment in six composting plants was performed to better characterize personal exposure levels and evaluate associated health risk in workers. Sampling results showed large ranges of concentrations of dust, bacteria, molds, and endotoxin in ambient air and in personal samples, both when driving a front-end loader and when cleaning, monitoring, and performing maintenance tasks. Mean personal exposure levels were high at 100 to more than 10 000 times higher than outdoor background levels and fully consistent with occurrence of inflammatory and allergic respiratory outcomes among workers. Engineering control, personal protection, and education and training programs for employees, health, and safety officials, and occupational physicians are being developed and implemented. Water Environ. Res., 81, 866 (2009).
This article discusses an increasing water demand situation in Franklin Lakes, New Jersey, related to its increased population. Also, seasonal peaks in demand and more rigorous federal water quality standards led to the simple solution of combining the ancient diatomaceous earth (DE) filter media with a modern vacuum‐filter system and enhanced with the newer technology of cationic polymers.
This article reports on a situation at United Water New Jersey's (UWNJ) Haworth Water Treatment Plant where water quality in the Oradell Reservoir deteriorated due to runoff from surrounding developed areas and supplemental water being introduced from adjacent watersheds. This resulted in an increased rate of eutrophication of the reservoir water, along with higher turbidity, natural organic matter, and nutrient levels. Characteristics of the Oradell Reservoir are given, along with past treatment practices. Several reservoir management options are listed, and from these options UWNJ decided on a reservoir aeration system that would stabilize raw water quality in the reservoir.
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