TagNextGen(68)

This Port of Seattle briefing, presented by Noise Programs Manager Stan Shepherd, covers key topics related to aircraft noise management at Seattle-Tacoma International Airport, including flight procedures, noise contours, and mitigation programs. It highlights a steady rise in noise complaints received through the Noise Information Hotline and online forms, growing from 2,172 inquiries in 2014 to 2,959 in 2016, with a small number of repeat callers accounting for the majority of contacts each year.

A Seattle attorney sued the Port of Seattle in September 2022 to force disclosure of a fully redacted consultant report examining public health impacts—including noise, air pollution, and higher rates of disease—on communities within 10 miles of Seattle-Tacoma International Airport. Separately, the Aviation-Impacted Communities Alliance urged a federal advisory committee to support six research proposals challenging the FAA's longstanding 65 DNL noise threshold, which new survey data suggests dramatically understates the number of people harmed by aircraft noise. The issue also covers the first successful test flight of Eviation's all-electric nine-passenger Alice aircraft in Moses Lake, Washington.

This document is an invoice dated January 4, 2022, from ABCx2, LLC to the County of Arlington for aviation consulting services totaling $15,787, covering Phase II work ($9,750) and the final Phase I public meeting activities ($6,037). An accompanying project budget summary shows the full consulting engagement spanned from April 2020 through December 2021, with a total project budget of $250,000 spread across multiple billing periods and consultant categories. The work appears related to NextGen air traffic modernization initiatives, focusing on safe, efficient, and environmentally responsible flight procedures.

ABCx2, LLC submitted Invoice #1210 dated April 7, 2021, billing the County of Arlington $17,912.50 for consulting services, which was approved for payment on April 30, 2021 by Richard I. Roisman. The attached budget summary shows this invoice represents the final billing period (2021_03) of a broader consulting engagement totaling $243,963.00 against a $250,000 project budget, leaving a remaining balance of $6,037. The work was organized across five components (C1–C5) spanning April 2020 through March 2021, accumulating nearly 977 total hours of billable consulting services.

ABCx2, LLC submitted Invoice #1207 dated March 5, 2021, billing the County of Arlington $24,138.00 for consulting services, approved for payment on March 30, 2021. The accompanying project budget summary shows cumulative consulting work spanning May 2020 through February 2021 across five components (C1–C5), totaling $226,050.50 in costs out of a $250,000 project budget, leaving a remaining balance of $23,950.

This document is an invoice dated February 4, 2021, from ABCx2, LLC (a consulting firm based in Senoia, Georgia) to the County of Arlington, Virginia, billing $27,212.50 for consulting services. Accompanying the invoice is a project budget summary prepared under the NowGEN brand, showing cumulative consulting hours and costs across five components (C1–C5) from April 2020 through January 2021, totaling approximately $201,912.50 of a $250,000 project budget. The remaining budget balance at the time of invoicing was approximately $48,088.

This presentation by aviation consultant Jim Allerdice explores 'dispersion,' a strategy for reducing repetitive aircraft noise over residential neighborhoods by intentionally varying the lateral flight paths of aircraft. It distinguishes between natural dispersion, which occurs randomly with manually flown routes and air traffic control vectors, and systematic dispersion, which uses satellite-based navigation (RNAV) to spread flights across multiple precise, predictable tracks in a controlled way. Examples of systematic dispersion techniques discussed include radar vectors to RNAV, open Standard Instrument Departures (SIDs), and Equivalent Lateral Spacing Operations (ELSO).

This document is an invoice dated January 5, 2021, from ABCx2, LLC to the County of Arlington for $14,850 in consulting services, approved for payment on January 13, 2021. It includes a project budget summary showing cumulative consulting work billed to Arlington from May 2020 through January 2021, totaling $174,700 spent against a $250,000 project budget, with $75,300 remaining. The work is associated with NowGEN, a firm focused on safe, efficient, and environmentally responsible aviation practices.

This document is an invoice and project budget summary from ABCx2, LLC (operating under the NowGEN brand) to the County of Arlington for consulting services rendered through December 2020, totaling $25,087.50 for the final billing period. The attached budget summary shows cumulative consulting work across five components (C1–C5) spanning April through November 2020, with a total project cost of $159,850.00 against a $250,000 project budget, leaving a remaining balance of $90,150. Note: this document pertains to Arlington County consulting services and does not appear to contain content directly related to Sea-Tac Airport noise policy.