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Vp91 fish tissue chemistry metadata PDF Methodology Report - esapubs

Vp91 fish tissue chemistry metadata PDF Methodology Report - esapubs 2025

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The document provides comprehensive documentation for the EMAP-Estuaries Program Level Database, specifically focusing on fish tissue chemistry data collected in the Virginian Province in 1991. It includes sections on data set identification, investigator information, objectives, data acquisition and processing methods, quality control measures, and data access procedures. The primary aim of the study was to assess contaminant levels in fish tissues from estuaries to address human health concerns regarding environmental contamination. The document outlines methodologies for sample collection and analysis, as well as quality assurance protocols to ensure data integrity.

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What percentage of fish does the EPA estimate to be contaminated with mercury in the nations rivers?

Fish tissue screening level exceedances for an average level of fish consumption ranged from 23.5 % to 26.0 % for mercury, 17.3 % to 51.6 % for PCBs, and 0.7 % to 9.1 % for PFOS. Keywords: Fish tissue; Mercury; PCBs; PFAS; Per- and polyfluoroalkyl substances; Polychlorinated biphenyls.

What percentage of US rivers are considered degraded?

Forty-two percent of the nations river and stream miles were in poor condition, with elevated levels of phosphorus, and 44% were in poor condition for nitrogen. Poor biological condition was more likely when rivers and streams were in poor condition for nutrients.

What is the least contaminated fish?

Choose fish and shellfish that are lower in mercury such as salmon, trout, tilapia, cod, sole, sardines, shrimp, oysters, and other shellfish. For the most health benefits, choose fatty fish such as salmon, trout, herring, chub mackerel, and sardines. o These fish have healthy omega-3 fatty acids.

What percentage of fish does the EPA estimate to be contaminated with mercury in the nations lakes?

Results show that mercury and PCBs were detected in every fish sample from all 500 lakes and reservoirs. Mercury concentrations in fish fillet samples exceeded EPAs recommended tissue-based water quality criterion of 0.3 ppm at 49% of the sampled population of 76,559 lakes.