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    Toxicity of Dry Weather Flow from the Santa Monica Bay Watershed

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    Subject
    Toxicity; Dry Weather Flow; Santa Monica Bay Watershed
    Author
    Bay, Steven M.; Greenstein, Darrin J.; Lau, Sim-Lin; Stenstrom, Michael K.; Kelley, Carolyn G.
    Journal Title
    Scas: Bulletin of the Southern California Academy of Sciences
    Volume
    95
    Issue
    scas/vol95/iss1; 1
    Metadata
    Show full item record
    URI
    https://scholar.oxy.edu/handle/20.500.12711/10913
    Abstract
    A significant source of contaminants to Santa Monica Bay is the daily <br /><br />discharge of 10-25 million gallons of urban runoff from approximately 70 storm <br /><br />drains. Research conducted in 1990-93 examined the toxicity of dry weather flow <br /><br />from Ballona Creek and three other drains discharging into Santa Monica Bay. <br /><br />Toxicity tests were conducted using sensitive life stages of purple sea urchins, red <br /><br />abalone, and giant kelp. Spatial and temporal variations in toxicity were observed. <br /><br />Sea urchin sperm and abalone embryos were more sensitive than kelp spores, <br /><br />with toxic effects produced by >5.6% dry weather flow. Preliminary toxicity <br /><br />identification evaluations indicated that the constituents causing toxicity in dry <br /><br />weather flow are variable.
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