TagSea-Tac Airport(2027)

This document, labeled Exhibit #430 and archived as AR 022780, is a photograph showing what appears to be a ground-level view of a wet or muddy outdoor area with debris, sticks, and small plants visible. A white pipe or tube is partially visible in the lower left corner of the image. The photo appears to have been submitted as evidence or documentation in a proceeding related to Sea-Tac Airport noise or environmental policy matters.

Placeholder page bearing Administrative Record number AR028119, indicating the exhibit was still being copied and would be supplied later. No substantive content is present. Document appears in the Sea-Tac Airport administrative record.

Placeholder page at Administrative Record page AR028052 indicating that the exhibit referenced at this location in the administrative record was still being copied and would be supplied later. No substantive content is present. Document appears in the context of Sea-Tac Airport or related administrative proceedings.

This document is a reference bibliography (Exhibit B) listing scientific and regulatory sources related to environmental monitoring at Seattle-Tacoma International Airport. It includes studies on stormwater quality, aircraft de-icing and anti-icing fluid toxicity, aquatic habitat assessment, and sediment guidelines, drawn from sources such as the Port of Seattle, Parametrix Inc., and various environmental agencies. The references support environmental compliance reporting under the airport's NPDES stormwater permit.

This document presents a Water Resources Analysis Schedule, displayed as a Gantt-style project timeline chart. It outlines the sequencing and duration of various technical tasks related to water resources analysis, including data collection, feasibility studies, treatment evaluations, and report preparation. The schedule appears to track project milestones and dependencies across multiple phases of a water resources planning effort.

This document contains hydrological flow data for Miller Creek, including a ranked frequency analysis of the lowest monthly mean streamflows recorded between August and May from 1948 to 1995, alongside modeled daily and hourly stream flow outputs from 2-year/72-hour and 2-year/2-hour storm events simulated in August 1996. The analysis identifies a 5-year mean low flow of approximately 0.60 cubic feet per second for the lowest month in the August–May period. Acute and chronic water quality standards are also evaluated in relation to effluent and receiving water flows during the storm event.

This document is a fact sheet accompanying an NPDES (National Pollutant Discharge Elimination System) permit issued to the Port of Seattle for Seattle-Tacoma International Airport, governing how the airport manages and discharges treated industrial wastewater and stormwater. It covers discharge locations into Puget Sound, Des Moines Creek, Miller Creek, and the City of SeaTac storm sewer system, and establishes effluent limitations and monitoring requirements. The permit addresses water quality standards, pollution prevention plans, and compliance schedules to protect surrounding waterways from airport-related contaminants.

Exhibit AR033807, WAC 173-340-747 soil concentration calculations for ground water and surface water protection under the Model Toxics Control Act (MTCA), SeaTac Third Runway Embankment Project. Tables derive cleanup levels for hazardous substances including antimony, arsenic, beryllium, cadmium, chromium +3, chromium +6, copper, mercury, nickel, selenium, silver, thallium, zinc, and lead using Equations 747-1 and

Port of Seattle Port Submittals Binder (AR 035023), containing a King County Superior Court Memorandum Ruling on Application of RCW 47.80.23(2) in case No. 96-2-20357-2 KNT, City of Des Moines et al. (plaintiffs) v. The Puget Sound Regional Council et al. (defendants). The ruling addresses obligations of a regional body (PSRC) when approving a major

Draft map AR035006 showing restrictive covenants on the west side of Seattle-Tacoma International Airport (northern section). Features include Relocated Miller Creek, Lora Lake, Miller Creek/Lora Lake/Vacca Farm Wetland and Floodplain Mitigation Area, Miller Creek Mitigation Area, Toe of Fill boundaries, Relocated S. 154th Place, and multiple 60-foot ROW designations (30 feet each side from center