Alaska Online Public Notices #POA-2026-00371 v1.0

Water-quality certification review for Sagavanirktok River pipeline stabilization work

The Alaska Department of Environmental Conservation is reviewing water-quality certification for Alyeska Pipeline Service Company’s river work to protect the Trans-Alaska Pipeline System near the Sagavanirktok River. - Government agencies and applicant - Alaska Department of Environmental Conservation (DEC) is reviewing the Clean Water Act Section 401 water-quality certification application. - U.S. Army Corps of Engineers (USACE), Alaska District, Regulatory Division is reviewing the associated work in navigable waters and waters of the United States. - Alyeska Pipeline Service Company is the applicant and project proponent; no procurement vendor or OEM is identified. - Proposed work and materials - Mine alluvial gravel from Sagavanirktok River gravel bars, then use gravel and riprap to improve spur dikes and build stabilization structures and strategic stockpiles near pipeline mileposts 77–84. - The public notice describes mining approximately 20,000 cubic yards across up to 126 acres and placement of up to 390,650 cubic yards across up to 8.97 acres. Reported total impacts are up to 135 acres. - Project drawings describe 13 spur dikes and specify alluvial gravel and Class IV riprap. The water-quality application also describes dredging 59,150 cubic yards over 9 acres and fill of 4,550 cubic yards of gravel and 2,600 cubic yards of riprap; drawing estimates include additional material quantities listed below. These figures are reported in different source documents and are not assumed to be additive. - A temporary berm made from streambed material would protect the mining area and be regraded after the mining season. Proposed controls include working during low-water conditions, maintaining setbacks, avoiding vegetated areas where practicable, managing sediment and turbidity, and restoring temporary access features. - Procurement relevance - This is a regulatory review and public-comment notice, not a government purchasing solicitation. No equipment, commercial product part numbers, contract value, or procurement quantities are specified. - No OEMs or competing manufacturers are identified.

Description

The Alaska Department of Environmental Conservation notice concerns Alyeska Pipeline Service Company’s request for state water quality certification for work protecting the buried Trans Alaska Pipeline System near the Sagavanirktok River. The project includes mining gravel from river bars, adding gravel and riprap to existing spur dikes, and staging material for future erosion response. The applicant proposes discharges of approximately 20,000 cubic yards of alluvial gravel over up to 126 acres and up to 390,650 cubic yards of mined gravel over up to 8.97 acres, with total impacts of up to 135 acres of waters of the United States. Work is planned for late fall during low-water conditions; public comments are due by November 6, 2026.

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