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F. A Permittee remains in compliance with S4 despite any discharges prohibited by <br />S4.A or S4.B, when the Permittee undertakes the following response toward long- <br />term water quality improvement: <br />A Permittee shall notify Ecology in writing within 30 days of becoming aware, <br />based on credible site-specific information that a discharge from the MS4 <br />owned or operated by the Permittee is causing or contributing to a known or <br />likely violation of Water Quality Standards in the receiving water. Written <br />notification provided under this subsection shall, at a minimum, identify the <br />source of the site-specific information, describe the nature and extent of the <br />known or likely violation in the receiving water, and explain the reasons why <br />the MS4 discharge is believed to be causing or contributing to the problem. For <br />ongoing or continuing violations, a single written notification to Ecology will <br />fulfill this requirement. <br />2. In the event that Ecology determines, based on a notification provided under <br />S4.F.1 or through any other means, that a discharge from a MS4 owned or <br />operated by the Permittee is causing or contributing to a violation of Water <br />Quality Standards in a receiving water, Ecology will notify the Permittee in <br />writing that an adaptive management response outlined in S4.F.3 below is <br />required, unless: <br />a. Ecology determines that the violation of Water Quality Standards is <br />already being addressed by a Total Maximum Daily Load (TMDL) or <br />other enforceable water quality cleanup plan; or <br />b. Ecology concludes the MS4 contribution to the violation will be <br />eliminated through implementation of other permit requirements. <br />3. Adaptive Management Response <br />a. Within 60 days of receiving a notification under S4.F.2, or by an <br />alternative date established by Ecology, the Permittee shall review its <br />Stormwater Management Program (SWMP) and submit a report to <br />Ecology. The report shall include: <br />i. A description of the operational and/or structural Best Management <br />Practices (BMPs) that are currently being implemented to prevent or <br />reduce any pollutants that are causing or contributing to the violation <br />of Water Quality Standards, including a qualitative assessment of the <br />effectiveness of each best management practice (BMP). <br />ii. A description of potential additional operational and/or structural <br />BMPs that will or may be implemented in order to apply AKART on <br />a site-specific basis to prevent or reduce any pollutants that are <br />causing or contributing to the violation of Water Quality Standards. <br />iii. A description of the potential monitoring or other assessment and <br />evaluation efforts that will or may be implemented to monitor, <br />assess, or evaluate the effectiveness of the additional BMPs. <br />Eastern Washington Phase H Municipal Stormwater Permit — August 1, 2014 <br />Page 8 <br />