Tumwater hearing examines 184‑lot Vista Views subdivision, wetlands mitigation, sewer and traffic plans

TUMWATER, Wash. — At a public hearing before Hearing Examiner Mark Scheifemeyer on Jan. 20, 2025, city staff and the applicant presented a proposal to subdivide roughly 54 acres near Black Lake into 184 single‑family lots and sought a city infrastructure exception that would permit roadway and utility work adjacent to on‑site wetlands.

The project, filed as application TUM‑24‑1446 and marketed as Vista Views at Black Lake, proposes three phases of development and construction of a new sanitary sewer pump station and at least a mile of sewer and force main to extend city service into the area. City staff summarized technical review and recommended approval “of the phased preliminary plat and infrastructure exception with the attached conditions,” the staff planner testified.

Why it matters: The application asks the city to allow elimination of two small wetlands on the site under Tumwater’s small‑wetland standards while committing to substantial wetland compensation and buffer enhancement elsewhere on the property. The project would also add an estimated 1,700–1,800 daily vehicle trips, require traffic mitigation at a failing intersection, and extend sewer infrastructure that the applicant says will serve a broader area around Black Lake.

Project and staff recommendation City staff described the site at 3717 49th Ave SW and 3825 58th Lane SW as mostly flat former pasture that drains toward a larger Category 2 wetland in the northwest of the property (wetland A) and two much smaller Category 4 wetlands in the southern portion (wetlands B and C). The applicant proposes 103 lots in phase 1, 47 in phase 2 and 34 in phase 3. The staff report includes conditions for sidewalks, stormwater, tree replacement, and wetland mitigation and notes an infrastructure exception to allow public‑standard improvements adjacent to critical area buffers along 49th Avenue.

“We recommend approval of the phased preliminary plat and infrastructure exception with the attached conditions,” city staff said during the hearing, summarizing their review of the application materials, technical reports and agency comments.

Applicant presentation and technical work The applicant team said it had prepared a multi‑disciplinary technical record — including wetland, soils, groundwater, stormwater, traffic and sanitary sewer studies — and that the layout was designed to provide a mix of lot types and pedestrian connections to nearby Black Lake Elementary School. Jeff Pantier, the applicant’s lead land‑use specialist, called the subdivision “a walkable community” and said phase 1 would construct the north–south public street connecting 49th Avenue to 58th Lane and the initial sewer, water and street improvements.

The applicant described an extensive sanitary sewer build‑out that includes roughly three quarters of a mile of gravity sewer, a force main extending about a mile to an existing system north of the site, and a new pump station; the applicant said the sewer work alone is expected to cost in excess of $4,000,000. The traffic consultant said the traffic impact analysis estimated roughly 1,786 daily trips for the earlier 186‑unit count and about 178 PM peak trips; required mitigation was calculated to include turn‑lane and acceleration‑lane work at Black Lake Boulevard and Black Lake Belmore Road and payment of approximately $850,000 in traffic impact fees to the city.

Wetlands, mitigation and ecology comments Applicant and consultant testimony focused substantial time on wetland delineation and the mitigation approach. Consultants told the examiner they performed dozens of site visits over multiple seasons, installed monitoring wells and data loggers, and used regional Corps guidance to evaluate hydrology. They concluded that wetlands B and C are small Category 4 features that may be removed under Tumwater’s small‑wetland standards if mitigation and compensation requirements are met.

The applicant’s mitigation plan includes creation and enhancement of wetland and buffer areas on the north part of the site, extensive plantings of western red cedar and other natives, multi‑year monitoring, and separate mitigation for a nearby pump station impact. In oral testimony the applicant’s wetland biologist said the mitigation area and buffer plantings provided far more planting area than minimum code ratios — describing the proposed rehabilitation area as substantially larger than required.

City staff and the applicant also reported that the Nisqually and Squaxin Island tribes, the Washington State Department of Ecology and the Department of Archaeology and Historic Preservation commented during review; Ecology asked for additional field work and then engaged in repeated exchanges with the applicant. No formal SEPA appeal was filed after the city issued a Mitigated Determination of Nonsignificance on Dec. 20, 2024.

Traffic, access and school connections The traffic study was coordinated with Tumwater, Thurston County and the Washington State Department of Transportation and analyzed 10 nearby intersections. The consultant reported that all study intersections met acceptable levels of service except the Black Lake Boulevard/Black Lake Belmore intersection, which was projected to operate at failing levels and for which turn‑lane and acceleration‑lane mitigation was proposed.

Neighbors raised multiple concerns about traffic and safety: many told the examiner that Black Lake Belmore Road is narrow in places, that school traffic already congests the area during drop off and pick up, and that the community’s two‑lane roads include known choke points. Several public speakers said they expected a significant share of subdivision traffic to use the 58th Lane connection and asked whether the city or applicant would add turn lanes or other improvements at that access.

Environmental and groundwater concerns from the public Members of the public urged caution on hydrology, groundwater and listed species protection. Commenters and the Clean Black Lake Alliance asked the city to reconsider whether an environmental impact statement (EIS) or further basin‑wide study is warranted; they pointed to Ecology’s requests for added field work and expressed concern about cumulative impacts from multiple nearby developments on groundwater recharge, stormwater volumes and habitat for Oregon spotted frog and other species.

Several members of the public described local flooding and seasonal ponding on roadways; others asked whether mitigation that is being proposed on the applicant’s land could be used to compensate for pump station or frontage impacts in a manner that doubles up mitigation. The applicant’s team said the pump station mitigation is included in the larger mitigation area and that the applicant’s plan provides substantially more mitigation than the code requires in several categories.

Tree replacement, open space and other technical items The staff report and applicant materials document 275 trees on site and explain Tumwater’s tree code requirement (a 20% retention or 12 trees per acre standard, whichever is greater). Applicant testimony said the subdivision will require planting additional trees to meet the code; during the hearing the applicant and staff confirmed that mitigation plantings for wetlands are not counted as tree replacement under the municipal tree standard, so both mitigation and tree replacement plantings will be installed.

Record status and next steps Hearing Examiner Mark Scheifemeyer said the hearing record would remain open for a brief written response period so the city and applicant can respond comprehensively to the public comments and unresolved agency questions. He instructed the parties to file written responses by Monday at 5 p.m. (the examiner set a filing deadline and said he would then close the record and issue a decision on the application after reviewing the full file). No final decision was issued at the hearing.

Public comment sampled at the hearing stressed three recurring issues: traffic and roadway safety (especially near Black Lake Elementary and at the 49th/Black Lake Belmore intersection), potential effects on wetland and groundwater hydrology and habitat, and the desire for a broader basin‑level assessment of cumulative impacts from multiple developments.

The hearing record includes the staff report and more than a dozen technical exhibits, agency comments from the Department of Ecology and tribal governments, and multiple public comment letters. The hearing examiner emphasized that his review is fact‑based and limited to evidence submitted in the record.

What’s next: the city and the applicant may file written responses to public and agency comments by the examiner’s deadline; after the record closes the examiner will issue a written decision on whether to approve the phased preliminary plat and infrastructure exception and, if approved, the conditions that will apply.