Biosolids Applied to Land Advancing Standards and Practices (2002) / Chapter Skim
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3 Epdiemiological Evidence of Health Effects Associated with Biosolids Production and Application
3 Epdiemiological Evidence of Health Effects Associated with Biosolids Production and Application
Pages 106-125
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From page 106... ...
Thus, the committee limited review to studies published in the peer-reviewed literature and reports from government agencies. The review included studies that investigated health effects or provided biomonitoring data (evidence of biological absorption [i.e., chemical absorption into the body]
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From page 107... ...
workers involved in biosolids production and application, (4) populations near sewage treatment plants, (5)
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· Populations near sewage treatment plants. The committee evaluated four studies of populations living near sewage treatment plants.
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1980~. One study documented the absence of serological evidence of viral infection among populations near application sites (Dorn et al.
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From page 119... ...
The literature is even more sparse considering the varying populations that are potentially exposed to biosolids via wastewater treatment, biosolids production, occupational exposure during application, and community exposure. For some exposures, such as chemical exposure, it is fairly clear that chemical contamination of sewage with industrial chemicals can result in product contamination leading to exposure of workers and community residents.
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From page 120... ...
Thus, lack of compelling evidence of adverse health effects among wastewater treatment workers should not be used to infer that there will be a lack of adverse health effects from exposure to biosolids. There are two types of health studies that will reduce uncertainty regarding health effects of biosolids exposure response studies end preplanned studies.
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From page 121... ...
Studies of wastewater treatment workers should not be used as substitutes for studies of actual biosolids exposure. While routine human health surveillance of all populations exposed to biosolids is impractical, the committee recommends that EPA promote and support a research effort to reduce uncertainty about the possible health consequences of exposure to biosolids.
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From page 122... ...
The studies would require identification of microorganisms and chemicals to be measured, selection of measurement methods for field samples, and collection of adequate samples in appropriate scenarios. A possible exposure-assessment studywouldbe to measure endotoxin exposure of workers at biosolids production and application sites and of communities nearby.
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From page 123... ...
1983. Hazardous chemical exposure at a municipal Wastewater treatment plant.
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1998. Prevalence of infectious diseases and associated symptoms in wastewater treatment workers.
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From page 125... ...
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