WA ST Dept of Ecology 2/15/2022 - Laserfiche WebLink

i. Provide a detailed description of the modified or new optimization strategy selected from the list developed in S5.C.1.b. Include an implementation schedule for any changes and, as necessary, use the treatment process assessment developed to evaluate anticipated results. ii. If the Permittee proposes no changes to the optimization strategy, they must provide reasons for not making changes. 2. With the next Annual Report, submit for review a proposed approach to reduce the annual effluent load below the action level listed in either Table 8 or Table 9 (as applicable for those jurisdictions) for the duration of the permit term. This must be an abbreviated engineering report or technical memo, unless Ecology has previously approved a design document with the proposed solution. The proposed approach must utilize solutions that can be implemented as soon as possible. This may include influent load reduction strategies identified in S5.C.3. The engineering document must include: i. Brief summary of the treatment alternatives considered and why the proposed approach was selected. Include cost estimates for operation and maintenance; ii. The basic design information, including influent characterization; iii. A description of the proposed treatment approach and operation, including updates to the WWTP's process flow diagram; iv. Anticipated results from the proposed approach including expected effluent quality; v. Certification by a licensed professional engineer. b. If a Permittee exceeds an action level two years in a row, or for a third year during the permit term,the Permittee must begin to reduce nitrogen loads by implementing the proposed approach submitted per S5.D.2 following Ecology's written approval of the proposed approach and implementation schedule. c. Submit an update to the Permittee's Operation and Maintenance Manual no later than 6 months following implementation. Puget Sound Nutrient General Permit Page 23