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Toxic Substances Monitoring Program: Trace Elements In Fish And Clams - 1999 Data Summary.pdf

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Preview of Toxic Substances Monitoring Program: Trace Elements in Fish and Clams - 1999 Data Summary
🔗 Source: waterboards.ca.gov
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📄 Pages: 5 pages
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Summary

Key findings include:

Trace Elements:

Arsenic, Cadmium, Chromium, Copper, Lead, Mercury, Nickel, Selenium, Silver, and Zinc: Detected at varying levels in fish and clams across all sampling sites.
Lower Newport Bay/Rhine Channel: Consistent presence of trace elements at low to moderate concentrations.
Peters Canyon Channel: Somewhat higher concentrations of certain elements compared to other sites.
 Upper Newport Bay/Newport Dunes, Aliso Creek/Pacific Park Drive, and other locations: Generally lower levels of trace elements.

Organic Chemicals:

Aldrin, Alpha-cis, Gamma, Trans-cis, Pyrifos, Dieldrin, Endosulfan, DDT, Diazinon, Dicofol, Ethion: Detected in fish and clams at varying concentrations.
San Diego River/Taylor Street: Higher levels of some organic chemicals, indicating potential local pollution sources.
Buena Vista Lagoon, San Marcos Creek, Escondido Creek, and other locations: Generally lower concentrations of organic contaminants.

Key Observations:

Regional Variations: Concentrations of both trace elements and organic chemicals varied significantly between sampling sites, suggesting regional differences in pollution levels and potential sources.
Potential Pollution Sources: The presence of certain chemicals like DDT and dieldrin suggests historical pesticide use and its persistence in the environment.
 Need for Further Monitoring: The data highlights the need for continued monitoring to track changes in contaminant levels over time and identify emerging threats.

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Description

Here is a brief description of the table in English:

The table provides preliminary data on trace elements in fish and clams from various locations in California, including arsenic, cadmium, chromium, copper, lead, mercury, nickel, selenium, silver, and zinc levels in 1999.

Technical Information

  • File Format: PDF
  • File Size: 197 KB
  • Pages: 5
  • Language: EN
  • Total Downloads: 29
  • Last Updated: 2 weeks ago

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