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Stormwater Pollution Prevention Plan <br /> If the 250 NTU benchmark for turbidity (or less than 6 cm transparency) is exceeded at any time, <br /> the following steps will be conducted: <br /> 1. Continue daily sampling until the turbidity is less than 25 NTU (or transparency is <br /> greater than 32 cm). <br /> 2. Initiate additional treatment BMPs such as off-site treatment, infiltration, filtration <br /> and chemical treatment within 24 hours of the first 250 NTU exceedance. <br /> 3. Implement additional treatment BMPs as soon as possible, but within 7 days of <br /> the first 250 NTU exceedance. <br /> 4. Describe inspection results and remedial actions taken in the site log book and in <br /> monthly discharge monitoring reports as described in Section 7.0 of this SWPPP. <br /> 19 <br />