First United Methodist Church of Seattle

(Seattle, WA)  The Seattle First United Methodist Church development project included demolishing two existing commercial structures on two adjacent parcels and building two new multi-story buildings, including a three-story community center and church with a daylight basement and a four-story, above-grade parking structure with a community center/urban ministry outreach on the first floor.

Landau Associates provided design services that included phased environmental assessment services and geotechnical engineering. Environmental services included Phase I and II environmental site assessments to document site history and assess potential environmental liabilities associated with the properties. One of the two properties was a former gasoline station in the 1920s.  Landau Associates provided investigative services to document soil and groundwater conditions and pre-demolition survey of the structures on the subject property for potentially hazardous building materials.

Onsite investigative work required liaison with multiple operating businesses and coordination to minimize impacts to their daily operations. The development required temporary and permanent shoring walls and subgrade walls to depths of approximately 23 ft below ground surface to complete the underground parking excavation, and underpinning two multi-story residences adjacent to the site. 

Photo 2: FUMC of Seattle