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f <br /> management process described below. For discharges which are subject to a <br /> numeric effluent limit for turbidity, see SS.F—Noncompliance Notification. <br /> i. Within 24 hours,telephone or submit an electronic report to the applicable <br /> Ecology Region's Environmental Report Tracking System (ERTS) number(or <br /> through Ecology's Water Quality Permitting Portal (WQWebPortal]—Permit <br /> Submittals when the form is available in accordance with Special <br /> ), P <br /> a Condition 55.A. <br /> • Central Region (Okanogan, Chelan, Douglas, Kittitas,Yakima, Klickitat, <br /> Benton): (509) 575-2490 <br /> • Eastern Region (Adams,Asotin, Columbia, Ferry, Franklin, Garfield, <br /> Grant, Lincoln, Pend Oreille, Spokane,Stevens,Walla Walla,Whitman): <br /> (509)329-3400 <br /> • Northwest Region (Kitsap,Snohomish, Island, King, San Juan,Skagit, <br /> E <br /> Whatcom): (425) 649-7000 <br /> a Southwest Region (Grays Harbor, Lewis, Mason,Thurston, Pierce,Clark, <br /> Cowlitz, Skamania, Wahkiakum, Clallam,Jefferson, Pacific): (360)407-6300 <br /> These numbers and a link to the ERTS reporting page are also listed at the following <br /> website: htt www.ec .wa. ov ro rams w stormwater construction index.html. <br /> ii. Immediately begin the process to fully implement and maintain appropriate <br /> source control and/or treatment BMPs as soon as possible, addressing the <br /> problems within 10 days of the date the discharge exceeded the benchmark. If <br /> installation of necessarytreatment BMPs is not feasible within <br /> n 10 days, Ecology <br /> may approve additional time when the Permittee requests an extension within <br /> the initial 10-day response period. <br /> iii. Sample discharges daily until: <br /> a) Turbidity is 25 NTUs(or lower); or <br /> b) Transparency is 33 cm (or greater);or <br /> c) The Permittee has demonstrated compliance with the water quality <br /> standard for turbidity: <br /> 1) No more than 5 NTUs over background turbidity, if background is less <br /> than 50 NTUs, or <br /> 2) No more than 10%over background turbidity, if background is 50 <br /> NTUs or greater; or <br /> *Note: background turbidity in the receiving water must be <br /> measured immediately upstream (upgradient) or outside of the area <br /> of influence of the discharge. <br /> d) The discharge stops or is eliminated. <br /> iv. Review the SWPPP for compliance with Special Condition S9 and make <br /> appropriate revisions within seven (7) days of the date the discharge exceeded <br /> the benchmark. <br /> Construction Stormwater General Permit Page 15 <br />