HDR Engineering, Inc. 1/20/2023 - Laserfiche WebLink

2 requirements, but also provide the City with avenues to practical, technically feasible, and affordable approaches that can be implemented over time in ways that address the City’s priorities. This information will be used to support the City’s dialog with Ecology on current and future discharge permitting. This contract includes the following tasks: 1.2 Complete Working Draft Optimization Plan Everett has applied for coverage under the PSNGP and conducted a series of planning workshops in the spring and early summer of 2022 to discuss potential nutrient optimization activities, conceptualize potential optimization options, invest in additional treatment process monitoring equipment, and formulate the initial stages of a potential long-term plan for nitrogen discharge management. HDR will continue to collaborate with the City on optimization strategies and support the City’s interests from a long-term PSNGP compliance perspective. HDR will work with the City to complete a near-term Nitrogen Optimization Plan for 2022/23 as a Working Draft, to develop long-term optimization strategies as part of a systematic approach to optimization for PSNGP compliance and prepare the first Annual Report to be submitted March 31, 2023. Key activities are as follows with meetings conducted either in-person or virtually: • Meet with the City to receive City staff comments on the June 3, 2022 draft Nitrogen Optimization Plan. The City may abbreviate some portions of the draft to streamline the documentation of the plan and utilize the Working Draft as a living document that is revised over time in accordance with the City’s optimization activities. • Receive treatment process monitoring data from the summer 2022 full-scale operations, including optimization testing efforts to promote nitrification in the Trickling Filters. It is understood that a variety of factors impacted summer of 2022 performance and limited the extent to which any optimization activity could be sustained. • Meet with City staff to review 2022 operations and treatment performance data analysis (November/December 2022). • Meet with the City to receive City staff comments on the June 3, 2022 draft version Nutrient Optimization Plan (November/December 2022). 1.3 Prepare First Annual Report Collaborate with the City to prepare the first Annual Report that is due for submittal to Ecology on March 31, 2023. The Nitrogen Optimization Working Draft will serve as the basis for input information to support the Annual Report to address the PSNGP requirements. The PSNGP requires documentation of implementation of the selected optimization strategy during the first reporting period in the first Annual Report for the reporting period January 1 through December 31, 2022. Documentation of Nitrogen Optimization Plan implementation must be submitted annually according to PSNGP Section S9 Reporting Requirements. That includes addressing the 20 questions posed by Ecology in PSNGP Appendix C Annual Report Questions for Dominant Loaders. The Annual Report documentation must include the following from PSNGP Section S4.C Nitrogen Optimization Plan and Report: