Mitigation measures included vacuuming the catch basins with a vactor truck and jet-flushing the storm sewer line between the release area and the outfall to Baker Creek. Farallon documented the mitigation activities and conducted surface water sampling at the storm sewer outfall to verify the effectiveness of the mitigation measures. Because of the mishandling of materials and inadvertent release to Baker Creek, Farallon’s client tightened subcontractor selection criteria and continues to emphasize implementation of best management practices at its construction sites.
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