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� <br /> � [ <br /> 1. Prevents exposing stormwater to pollutants for which the waterbody is impaired, and <br /> retains documentation in the SWPPP that details procedures taken to prevent exposure <br /> un site; or <br /> 1 [ 2. Documents that the pollutants for which the vxater6udvis impaired are not present at <br /> the site, and retains documentation of this finding within the SWPPP; or <br /> ' <br /> \ � 3. Provides Ecology with data indicating the discharge is not expected to cause or <br /> contribute to an exceedance of a water quality standard, and retains such data on site <br /> with the SWPPP.The operator must provide data and other technical information to <br /> | [ Ecology that sufficiently demonstrate: <br /> | � <br /> a. For discharges to waters without an EPA-approved or-established TMDL,that the <br /> discharge of the pollutant for which the water is impaired will meet in-stream water <br /> | � quality criteria at the point of discharge to the waterbody; or <br /> b. For discharges to waters with an EPA-approved or-established TMDL,that there is <br /> | V sufficient rernainingvvaste|ood allocation in the TMDLto allow construction <br /> stormwater discharge and that existing dischargers to the waterbody are subject to <br /> compliance schedules designed to bring the vvoterbody into attainment with water <br /> \ i quality standards. <br /> Operators of construction sites are eligible for coverage under this permit only after <br /> \ � Ecology makes an affirmative determination that the discharge will not cause or <br /> / � contribute to the existing impairment or exceed the 7MDL. <br /> | C. Sampling and Numeric Effluent Limits for Discharges tm Water Bodies on the 3O3(d\ List <br /> | � ' <br /> for Turbidity, Fine Sediment, or Phosphorus <br /> \ 1. Permittees who discharge to segments of water bodies on the 303(d) list (Category 5)for <br /> | � turbidity,fine sediment, or phosphorus must conduct turbidity sampling in accordance <br /> with Special Condition S4.C.2 and comply with either of the numeric effluent limits noted <br />| in Table Sbelow. <br />| � � 2. As an alternative to the 25 NTUs effluent limit noted in Table 5 below(applied at the <br /> i point where otormovvater[or authorized non-stormovvated is discharged n0-dte), <br /> Permittees may choose to comply with the surface water quality standard for turbidity. <br /> \ � <br /> The standard is: no more than 5 NTUs over background turbidity when the background <br /> turbidity is 50 NTUs or less,or no more than a 10%increase in turbidity when the <br /> | ( backgnaund1urbidityisrnnre than 50NTUs. |n order to use the vvaterquoUh/standard <br /> ( <br /> requirement,the sampling must take place at the following locations: <br /> a. Background turbidity in the 303/dAisted receiving water immediately upstream <br /> | � /upgnadient\ or outside the area of influence mf the discharge. <br /> b. Turbidity at the point ofdischarge into the 3O3/d\'|isted receiving water, inside the <br /> | | area of influence of the discharge. <br /> | � <br /> 3. Discharges that exceed the numeric effluent limit for turbidity constitute a violation of | <br /> this permit. � <br /> 4. Permittees whose discharges exceed the numeric effluent limit must sample discharges / <br /> ' daily until the violation is corrected and comply with the non-compliance notification � <br /> | � requirements in Special Condition 5Sf ! <br /> | <br /> ` <br />