Tagsoil(64)

This exhibit, part of K.M. Leytham's pre-filed testimony (PCHB No. 01-160), shows a photograph taken on January 28, 2002, of an exposed fill embankment face near South 160th Street where a slope failure occurred. The image, approximately 4 feet high by 3 feet wide, reveals distinct layering and a lack of uniformity in the fill material. This evidence was submitted in connection with proceedings related to Sea-Tac Airport development and its surrounding infrastructure impacts.

This January 2002 memo from the Port of Seattle describes an environmental incident in which soil from the Summit Ridge fill site in Bellevue, Washington—potentially contaminated with petroleum hydrocarbons from a former home heating oil tank—was temporarily placed in the Third Runway embankment during construction. Upon discovery of the contamination in October 2000, the Port halted all haul from the site and removed approximately 1,540 tons of soil, disposing of it at a facility in Everett. The Port subsequently implemented additional environmental safeguards, including full-time on-site supervision, to prevent further transport of impacted soil to the Third Runway.

This December 2001 report, prepared by Hart Crowser, Inc. for the Port of Seattle, presents baseline chemical characterization results for the Black River Quarry in Renton, Washington, which was evaluated as an off-site borrow source of fill material for the Sea-Tac Third Runway Project. The study involved soil sampling, metals analysis, and data quality review to assess the suitability of quarry material for use in runway construction. Tables and figures detail sample locations, soil descriptions, and total metals analytical results from laboratory testing by North Creek Analytical, Inc.

Hart Crowser, Inc. report prepared for Port Of Seattle, December 12, 2001, project number 4978-06. Baseline chemical characterization of the Marine View Pit in Fife, Washington, as an off-site borrow source for the Third Runway Project at Sea-Tac Airport. Report includes total metals analytical results, soil sample descriptions, site plan schematic and sample location map,

Hart Crowser, Inc. subsurface conditions data report prepared for HNTB, project number 4978-52, dated October 22, 2001, covering the haul route and Borrow Areas 3 and 4 for the Third Runway Project at Sea-Tac International Airport, Seatac, Washington. Report by Reese P. Hastings (Senior Associate) and Joe N. Morrice (Senior Staff Hydrogeologist) covers generalized geologic

ACC (Airport Communities Coalition) reply memorandum in support of its motion for a stay, filed October 10, 2001, before the Pollution Control Hearings Board (PCHB). Argues that the Amended Certification sets acceptable soil contamination levels too high to protect water quality, citing DOE expert Chung Yee’s 3-phase back-calculating model showing Antimony should be limited to

Draft geotechnical engineering report prepared by Hart Crowser, Inc. for HNTB regarding the Third Runway Embankment, Phase 5 at Sea-Tac International Airport, SeaTac, Washington (project no. 4978-28, AR 052045). Authored by Josepha D. Celes (Senior Staff Geotechnical Engineer) and Michael Bailey, P.E. (Project Manager). Covers site preparation, subgrade improvement, embankment fill construction, TESC Pond A,

HartCrowser report prepared for Port of Seattle, September 21, 2001, project 4978-54. Topsoil Management Plan for Borrow Area 4 at Seattle-Tacoma International Airport (STIA), City of SeaTac, Washington, in support of third runway embankment construction. Documents arsenic contamination in topsoil from ASARCO copper smelter airborne emissions plume (Tacoma smelter plume), chemical analysis results, comparison to

Hart Crowser, Inc. subsurface conditions data report (project 4978-28) prepared for HNTB, dated September 21, 2001, covering Phase 5 Fill and Subgrade Improvement for the Third Runway Embankment at Sea-Tac International Airport, SeaTac, Washington. Report authored by Carsten Becker (E.I.T., Senior Staff Geotechnical Engineer) and Michael J. Bailey (P.E., Project Manager). Covers geologic and hydrogeologic

This 2001 User's Guide from the Washington State Department of Ecology describes software workbook tools (MTCASGL and MTCATPH) designed to help calculate soil and ground water cleanup levels under the Model Toxics Control Act. The guide covers installation, technical requirements, and step-by-step instructions for entering site-specific data such as chemical properties, exposure parameters, and hydrogeological characteristics. Note that while this document addresses environmental cleanup standards, it does not appear to be directly related to Sea-Tac Airport noise policy.