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

10 challenge of this EPA decision. These parties requested and the jurisdictional federal district court agreed to hold any legal proceedings in abeyance while EPA reconsidered its 2019 decision. In an April 1, 2022 Federal Register notice, the EPA has now proposed for adoption the HHWQC promulgated in November 2016. • Sediment Management Standards o Sediment management standards are set forth in Chapter 173-204 WAC.  Chapter 173-245 WAC requires that “All CSO sites shall achieve and at least maintain the greatest reasonable reduction, and neither cause violations of applicable water quality standards, nor restrictions to the characteristic uses of the receiving water, nor accumulation of deposits which: (a) Exceed sediment criteria or standards; or (b) have an adverse biological effect.” • Ecology has documented near-shore sediment impairments in portions of Port Gardner near the City’s CSO outfalls. Ecology’s Toxic Cleanup Program is working with the Port of Everett to clean up existing sediment contamination in the near- shore environment. The proposed permit does not allow the City’s CSO discharges to impair water or sediment quality near the outfalls. The permit will also require the City to develop and implement a monitoring plan that demonstrates that controlled CSO discharges do not impair water or sediment quality. • Contaminants of Emerging Concern (CECs) and Regulated and Unregulated Constituents o A number of compounds present in municipal wastewater and stormwater may have specific management requirements, be of concern in local waters, be unregulated and subject to future rulemaking, or present other challenges for water managers, including PCBs, PBDE, PFAS, 6PPD, etc. • Stormwater o Everett is a permittee covered by the Western Washington Phase II Municipal Stormwater Permit with effective date of August 1, 2019 and expiration date of July 31, 2024.  Potential issues for discussion include the annual monitoring plan, data analysis and trending, relationships to receiving water quality, and new and emerging contaminants of concern such as 6PPD. Key activities for Water Quality Standards, Rulemaking Review, and Compliance Support are as follows: • Collaborate with the City on a dialog and planning focused on water quality standards, potential issues, and compliance through quarterly review workshops and monthly meetings focused on key discrete topics of special interest. • The Task 3.0 budget is based upon approximately $50,000 per year devoted to quarterly workshops and monthly meetings focused on water quality standards and related issues. • For example, to the extent allowable within the budgeted resources for Task 3.0, conduct quarterly comprehensive compliance planning workshops to discuss a broad variety of topics of interest. These sessions are intended to provide a