TagJongejan(2)

In this August 6, 1979 letter from the FAA's Northwest Region to Jongejan Gerrard Associates, the agency provides guidelines on acceptable crowd density levels for recreation planning near Sea-Tac Airport. The FAA outlines four zones around the runway, each with specific limits on peak-time people per acre, ranging from no intensive use in the clear zone closest to the runway to no more than 40 people per acre in outlying areas. The letter also discourages any recreation development that could create bird hazards, incompatible lighting, or electronic interference with airport operations.

A July 1979 letter from planner Janis Snoey to FAA Airport Planning Branch representative George Sato transmits five pre-schematic site plans for the North Sea-Tac Park, showing projected peak-time visitor numbers under various development scenarios. The plans, prepared following an FAA meeting on July 17, 1979, are accompanied by a 'Carrying Capacity' map that classifies park areas by development suitability—from very high intensity (sports fields, motorcycle trails) to low intensity (foot paths only)—based on analysis of soils, hydrology, vegetation, and noise. The documents were intended solely to provoke discussion during the early master planning phase for the North Sea-Tac site.