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

1 Exhibit A Scope of Services City of Everett Puget Sound Nutrient General Permit Support and Annual Report NPDES Permit Review and Support Water Quality Standards, Rulemaking Review and Compliance Support Purpose The purpose of this effort is to support the City of Everett (City) in the NPDES permit renewal process with the Department of Ecology for both Everett’s individual NPDES permit that was originally expected in 2021 and remains pending renewal, and the draft and final versions of the Puget Sound Nutrient General Permit (PSNGP). This scope of services is for the Consultant (HDR) to assist the City through various technical assistance activities related to water quality, discharge permitting, water quality standards rulemaking, and regulatory compliance. The scope of services is identified in the following tasks. Task 1.0 Puget Sound Nutrient General Permit (PSNGP) Support and Annual Report The Washington State Department of Ecology (Ecology) PSNGP went into effect in 2022 with the initial 5-year cycle ending on December 31, 2026. The PSNGP has an aggressive compliance schedule with a March 31, 2023 deadline for the first Annual Nitrogen Optimization Report. Although Ecology has developed a plan for the first 5- year permit cycle, the PSNGP has been challenged and future requirements are uncertain and may change. The original scope of work for the Discharge Water Quality/Planning Assistance On-Call contract included the following: 1.1 Nitrogen Optimization and Management Concept Planning. Ecology’s focus on Puget Sound Nitrogen management will result in new planning requirements being included in either individual NPDES permit renewals, or the new Nitrogen General Permit, or both. The requirements will include near-term Optimization Planning and longer-term Nitrogen Removal Planning. The specifics of these permit requirements are evolving with Ecology. It is important to note that these will be planning requirements, and not implementation requirements. The City will be required to develop plans and submit them for review to Ecology. Implementation of changes will be based on many factors, including the limited availability of options for the City to reduce nitrogen in the existing treatment process, as well as many other factors that the City must consider in balancing all of the investments required to comply with all regulatory and performance requirements, maintain City assets, and provide for affordable Compliance Schedules. The purpose of this task is to assist the City in conceptualizing plans that will satisfy Ecology’s