TagEcology(797)

In August 2000, the Port of Seattle submitted a revised implementation plan to the Washington Department of Ecology for a flow augmentation facility on Des Moines Creek, near Seattle-Tacoma International Airport. The plan outlines two potential water sources — a Port-owned well used to irrigate the Tyce Valley Golf Course, or water purchased from Seattle Public Utilities — along with details on pipeline construction, dechlorination treatment options, and pump configurations. Construction of the facility was scheduled to begin in June 2002, with the well preferred as the lower-cost option pending resolution of water rights issues.

Facsimile cover sheet from Elizabeth Leavitt, Manager, Aviation Environmental Programs, Port Of Seattle, transmitting a 7-page package to Tom Luster (Ecology) and Eric Stockdale (NWRO) regarding the Auburn HPAD and shoreline exemptions. Includes August 9, 2000 letter from City of Auburn Planning Director Paul Krauss to Elizabeth Leavitt and Robert J. Fritzen (Department of Ecology,

Hart Crowser draft report prepared for Port of Seattle, August 9, 2000 (J-4978-13), evaluating perched groundwater zone interception and potential wetland hydrology impacts from Borrow Area 3 excavation for the Sea-Tac Third Runway project. Addresses Pacific Groundwater Group (PGG, 2000) concerns commissioned by Washington State Department of Ecology regarding impacts to Wetland 29. Includes ModFlow

Society of Wetland Scientists (SWS) position paper dated August 6, 2000 defining ‘wetland restoration’ as actions taken in a converted or degraded natural wetland that reestablish ecological processes, functions, and biotic/abiotic linkages leading to a persistent, resilient system integrated within its landscape. The paper covers five key scientific considerations: reinstatement of driving ecological processes (hydrology,

Letter dated August 1, 2000 from Associated Earth Sciences, Inc. (AESI), Project No. BV97016D, to Mr. John Wietfeld and Mr. Roger Nye of Washington State Department of Ecology Northwest Regional Office, on behalf of Port Of Seattle. Transmits quarterly ground water level measurements for Q1–Q4 from select wells completed in the C1 (Qva) advance outwash

In a July 31, 2000 letter to the U.S. Army Corps of Engineers and Washington State Department of Ecology, Northwest Hydraulic Consultants — representing the Airport Communities Coalition — raised concerns about unresolved technical problems with the Stormwater Management Plan (SMP) for Seattle-Tacoma International Airport's proposed third runway. Independent reviews had identified serious flaws in hydrologic modeling that could result in undersized stormwater facilities failing to meet flow control requirements. The consultants urged regulators to publicly disclose ongoing SMP discussions and allow meaningful time for further review before approving the project.

In a July 31, 2000 letter to the U.S. Army Corps of Engineers and Washington State Department of Ecology, Northwest Hydraulic Consultants raised concerns about unresolved technical problems with the Stormwater Management Plan (SMP) for the proposed third runway at Seattle-Tacoma International Airport. Independent reviews had found serious flaws in the hydrologic modeling that could result in undersized facilities failing to meet flow control requirements. The firm requested full public disclosure of ongoing SMP discussions and a meaningful comment period before any regulatory approval of the runway project.

A July 27, 2000 letter from the Port of Seattle's Environmental Program Manager transmits environmental documentation to the Washington Department of Ecology regarding fill material used in the Sea-Tac Airport Third Runway Project during the second quarter of 2000. The documentation, developed in accordance with the 1999 Airfield Project Soil Fill Acceptance Criteria, includes a fill summary table listing sources such as borrow pits, port property transfers, and construction sites, along with estimated fill volumes. A cumulative fill summary is also provided, covering all fill material placed from January 1998 through December 1999.

In July 2000, the Port of Seattle submitted an Implementation Plan to the Washington Department of Ecology outlining a proposed flow augmentation facility for Des Moines Creek, located near Seattle-Tacoma International Airport. The plan described using water from a Port-owned well to increase stream flow to one cubic foot per second and reduce water temperatures to 16 degrees Celsius during summer low-flow periods, with the goal of improving water quality and aquatic habitat. The facility would involve reconfigured well pumps, an 800-foot pipeline, a stilling basin, and an automated monitoring station to regulate flow and temperature in the creek.

In July 2000, the Port of Seattle submitted an Implementation Plan to the Washington Department of Ecology outlining a proposed Des Moines Creek Flow Augmentation Facility near Seattle-Tacoma International Airport. The plan describes using water from a Port-owned well — currently used for golf course irrigation — to boost creek streamflow to at least one cubic foot per second and lower water temperatures to 16°C during summer low-flow periods. An automated monitoring station downstream would control pump operations, with a backup option to draw from the Port's municipal water distribution system if well water became unavailable.