Laserfiche WebLink
for their current treatment processes, they must immediately proceed to the <br /> identification of a corrective action under S4.D. <br /> c. Initial Selection. As soon as possible and no later than July 1, 2022, select at <br /> least one optimization strategy for implementation. <br /> Document the expected performance (i.e., %TIN removal or a calculated <br /> reduction in effluent load or concentration) for the initial optimization <br /> strategy prior to implementation. <br /> 2. Optimization Implementation <br /> All Permittees in Table 5 must document implementation of the selected <br /> optimization strategy (from S4.C.1.c) during the first reporting period in the first <br /> Annual Report due March 31, 2023. Permittees must document implementation <br /> during every reporting period thereafter. The documentation must include: <br /> a. Strategy Implementation. Describe how the permittee implemented the <br /> selected strategy during each reporting period, following permit coverage. <br /> Including: <br /> i. Initial implementation costs <br /> ii. Length of time for full implementation, including start date. <br /> iii. Any adaptive management applied to refine implementation during the <br /> reporting period. <br /> iv. Anticipated and unanticipated challenges. <br /> v. Any impacts to the overall treatment performance as a result of process <br /> changes. <br /> b. Discharge Evaluation. By March 31 each year beginning in 2023, each <br /> Permittee in Table 5 must review effluent data collected during the previous <br /> calendar year to determine whether TIN loads are increasing. <br /> i. Using all accredited monitoring data, determine facility's annual average <br /> TIN concentration and load from the reporting period. If the annual TIN <br /> load exceeds the Action Level in Table 5 (or the applicable bubbled <br /> Action Level in Table 6)take the corrective actions in S4.D. <br /> ii. Determine the treatment plant's TIN removal rate observed during the <br /> reporting period. <br /> 3. Influent Nitrogen Reduction Measures/Source Control <br /> Permittees in Table 5 must investigate opportunities to reduce influent TIN loads <br /> from septage handling practices, commercial, dense residential and industrial <br /> sources and submit documentation with the Annual Report. The investigation <br /> must: <br /> Puget Sound Nutrient General Permit Page 14 <br />