Toxic Substances Monitoring Program Data Summary.pdf

It includes data collected from various locations and time periods in 1997. The report provides information on specific chemicals such as aldrin, dieldrin, endrin, DDT, and others, along with their concentrations (in ppb, wet weight) in different species of fish.

Key points:

- Chemical Monitoring: The study aimed to monitor the presence and levels of various organic chemicals known for their toxicity, including pesticides and PCBs.
- Sample Sites: Samples were collected from multiple locations, including the Salton Sea, Delhi Channel, San Diego Creek, Peters Canyon Channel, Upper Newport Bay, Santa Margarita River, Rose Creek, Otay Reservoir, Tijuana River, and more.
- Chemical Analysis: The report includes data on numerous chemicals, their detection limits, and concentrations found in fish tissue. For example, it lists the levels of trans-chloroane, chlorpyrifos, endrin, dieldrin, and others.
- Time Period: Data is grouped by month and year (1997), with specific sample dates mentioned.
- Species Studied: The report analyzes fish from different species, including liver, filet, and whole body tissue.
- Limit of Detection (LOD): It indicates when a chemical was below the LOD, denoted as <10.0 or <5.0, suggesting very low or undetectable levels.
- NA and ND: "NA" means the sample was not analyzed for a particular chemical, while "ND" signifies that the chemical was not detected.
- Table Structure: The data is organized in tables with columns for station/sample site, chemical name, tissue type, code, detection limits, and concentration levels.