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Arlington staff preview Lindsay Subarea Plan, highlight wetlands protections and road phasing
Summary
City planner Amy Oresco presented a draft Lindsay Subarea Plan that maps future housing, parks and a roundabout at 172nd and 80th; staff said wetlands will be protected through Native Growth Protection Area designations and mitigation done with the Tulalip Tribe. Council asked how road improvements will align with development phases.
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Arlington city planner Amy Oresco outlined a draft Lindsay Subarea Plan during a council workshop, describing mapped boundaries, zoning designations and infrastructure concepts intended to guide future development near 172nd Street.
Oresco said the study area is largely zoned RULC with an MPN overlay that now requires a subarea plan. The draft shows single-family homes, townhomes, multifamily units and limited small commercial areas, plus parks, trails and a conceptual roundabout at 172nd and 80th to serve new neighborhood access. ‘‘The applicant worked and the consultants worked really closely with the Tulalip Tribe for all the stream improvements and mitigation,’’ Oresco said, and staff marked riparian areas in the plan as Native Growth Protection Areas (NGPA).
Council members pressed staff on sequencing for off-site infrastructure. In response to a question about whether the roundabout would be complete before houses are occupied, Oresco said the applicant must obtain preliminary plat and civil permits and that timing for the roundabout will be tied to development phasing: ‘‘That is where we'll be deciding at what point does the roundabout have to be completed … after phase 1, we'll be after phase 2,’’ she said. Staff also clarified that until the median and full improvements are installed, 79th will remain open with left and right turns available; median installation could later create right-in/right-out conditions on portions of 79th.
On zoning, Councilmember Tim Abrahamson asked whether the MPN overlay and subarea plan would require rezoning; Oresco said no rezoning is planned because the existing overlay allows the proposed uses. On traffic analysis, transportation staff said Arlington performed a comprehensive study in 2021 and typically conducts intersection-level studies as projects advance.
The presentation included conceptual layouts for trails, bioretention-based stormwater facilities integrated into park areas, and a PUD easement corridor shown on the plan. Oresco said some property east of a mapped tribal-owned parcel is excluded from the subarea boundary and that several property owners on the west side of 79th are not currently pursuing development.
The workshop was an informational step; no ordinance vote was recorded during the meeting. Staff said subsequent permitting and plat review will determine final sequencing for the roundabout and other infrastructure.

