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DEQ proposes expanding Chesapeake Bay 'deepwater' boundary and to adopt EPA PFAS aquatic‑life criteria
Summary
DEQ staff recommended expanding the Chesapeake Bay deepwater designated use based on decades of monitoring showing summer stratification and low bottom‑water dissolved oxygen, and proposed incorporating EPA's PFOA and PFOS aquatic‑life criteria; the board authorized public comment and hearings on the triennial review.
DEQ staff on Nov. 18 presented proposed amendments to Virginia's water quality standards (triennial review under 9VAC25‑260) that would reshape how some areas of the Commonwealth's portion of the Chesapeake Bay are classified and regulated.
Dr. Tish Robertson, representing DEQ’s water quality standards program, said staff are recommending expanding the 'deepwater' designated use to include additional bay segments where long‑term monitoring shows persistent summer stratification and low bottom‑water dissolved oxygen (DO). "DEQ staff are recommending the expansion of the deepwater boundary to include…
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