1300 W MARINE VIEW DR 2018-01-02 MF Import

Page 14 of 46 If discharge mrbidity is greater than or equal to 250 NTU; or if discharge transparency is less than or equal to 6 cm, the CESCL shall: i. Notify Ecoloey by phonc in accordance with Condition SS.A.; and ii. Review the SWPPP for compliance with Condition S9 and make appropriate revisions within 7 days of the discharge that exceeded the benchmark; and iii. Fully implement and maintain appropriate source control and/or treatment BMPs as soon as possible, but within 10 days of the discharge that exceeded the benchmark; iv. Document BMP implementation and maintenance in the site log book; and v. Continue to sample dischazges daily until: turbidity is 25 NTU (or lower); or 2. transparency is 31 cm (or greater); or 3. the CESCL has demonstrated compliance with the water quality standard for turbidity: a. no more than 5 NTU over background turbidity, if background is less than 50 NTU, or b. no more than 10% over background turbidity, if background is 50 NTU or greater, or 4. the dischargc stops or is eliminated. D. �1 Monitorin�• Sites with Si�niticant Concrete Work or Eneineered Soils Beginning October 1, 2006, if construction activiry will result in the disturbance of 1 acre or more, and involves significunt concreie work or the use of engineered soils, and stormwater from the affected arca drains to surface waters of the state or ro a storm sewer system that drains to surface waters of the state, the Permittee shall conduct pH monitoring as set forth bclow: 1. For sites with si�mificant concrete work, the pH monitoring period shall commence when the concrete is first esposed ro precipitation and continue weekly until srormwater pII is 8.5 or less. a. "Significant concrete work" means greater than 1000 cubic yards pourcd concrete or recycled concrete. 2. For sites with engineered soils, the pH monitoring period shall commence when the soil amendments are first exposed to precipitation and shall continue until the area of cn��incercd soils is fidlv srabili=ed.