TagWater Quality(475)

Memorandum dated March 9, 2001 from Dave Garland, Washington Department of Ecology NWRO Water Quality Nonpoint Unit, to Kevin Fitzpatrick and Ann Kenny, reviewing Earth Tech’s December 2000 ‘Sea-Tac Airport Master Plan Update Low Streamflow Analysis’ (Exhibit 2099, AR 033695–033697). The memo evaluates HSPF streamflow modeling for Miller Creek, Walker Creek, and Des Moines Creek

A March 8, 2001 laboratory report from Columbia Analytical Services sent to John Strand of the Airport Communities Coalition in Richland, WA, presents water quality monitoring results (project 00-101B) from samples submitted on February 20, 2001. The report includes standard data qualifiers and acronym definitions used to interpret inorganic, metals, and organic analytical results. All analyses were conducted under the laboratory's quality assurance program.

A February 2001 laboratory report from Columbia Analytical Services transmits water and sediment quality monitoring results to Columbia Biological Assessments in Richland, Washington, under service request K2101038. The report confirms that all analyses were conducted in accordance with the laboratory's quality assurance program, with samples received on February 12, 2001 and preliminary results faxed on February 23, 2001. The accompanying documentation includes standard data qualifier codes for inorganic, metals, and organic results used to interpret analytical findings.

This February 2001 report by Herrera Environmental Consultants presents a five-year summary of water quality monitoring conducted for the City of Des Moines, Washington, covering three creek basins: Des Moines Creek, Massey Creek, and North Fork McSorley Creek. The report examines a range of water quality parameters including temperature, pH, dissolved oxygen, metals, nutrients, turbidity, and fecal coliform bacteria, as well as benthic invertebrate conditions as indicators of stream health. It was prepared for the City's Surface Water Management Utility and provides data intended to inform stormwater and surface water management decisions in the Des Moines area near Sea-Tac Airport.

A water resources expert hired by the Airport Communities Coalition reviewed the Port of Seattle's stormwater management plan for Sea-Tac Airport expansion and found serious water quality concerns. The review concluded that the plan would harm surrounding streams and aquifers, that existing pollution controls were already failing to meet Washington State water quality standards, and that the proposed measures offered no reasonable assurance of future compliance. The expert recommended denial of both the Clean Water Act Section 401 certification and the Section 404 permit approval.

Handwritten notes from an Ecology informational meeting with Erik and Ann dated February 14, 2001 (AR 018355-018357). Topics include stormwater plan analysis from Kelly Whiting and John Drybeck (water quality staff), Vasen Farm farmed wetland ratios (1:1 in-basin acreage, 2:1 out-of-basin replacement), enforcement vs. restoration, prior converted designation, Corps of Engineers wetland determinations, 509 overpass,

Exhibit AR017360, Part IX Tables from MTCA Cleanup Regulation WAC 173-340-900, dated February 12, 2001. Contains Table 720-1, Method A Cleanup Levels for Ground Water, listing hazardous substances including arsenic, benzene, benzo(a)pyrene, cadmium, chromium, DDT, 1,2-dichloroethane (EDC), ethylbenzene, ethylene dibromide (EDB), lead, lindane, methylene chloride, mercury, MTBE, naphthalenes, PCB mixtures, radium 226, tetrachloroethylene, toluene, trichloroethylene,

Handwritten field notebook entries dated 1/28/01 documenting a site visit to Ace Airport View (DM1 – Monitoring Station) near Des Moines, referencing Des Moines Creek, SDS 1 outfall into SW associated wetlands, steep side terrain, oil boom present in unit 2, turbid water, black stones, water from outfall significantly turbid, Dr. Strand took samples at

These are prepared talking points for Washington State Department of Ecology officials attending public meetings on January 26-27, 2001, regarding the proposed Third Runway (3RW) at Seattle-Tacoma International Airport. The notes address 17 anticipated public questions covering topics such as Ecology's 401 Water Quality Certification review process, the use of Port-funded consultants, SEPA compliance, wetlands impacts, and whether the project was receiving special political consideration. Officials emphasized that no approval would be granted until the project demonstrated full compliance with all applicable environmental laws and regulations.

The Port of Seattle requested regulatory approval to temporarily take Lagoon #3, part of Seattle-Tacoma International Airport's industrial wastewater treatment system, out of service from April through December 2002 for remediation and expansion work. The project aimed to increase the lagoon's storage capacity from 26 million gallons to 76 million gallons, add a protective liner, and rebuild berms to prevent untreated wastewater from seeping into the ground. During the construction period, some untreated industrial wastewater flows could potentially be released into Des Moines Creek as unavoidable bypasses.