Bellefield Office Park Building N & O

The Bellefield Office Park Buildings N and O properties are located in the City of Bellevue, King County, Washington. The subject properties are included within the Bellefield Office Park located west of Interstate 405, south of S.E. 8th Street and east of 112th Avenue S.E. in Bellevue, Washington. Land surface elevations generally range between 14 and 18 feet. The Mercer Slough surrounds the site. The properties are used for general office purposes. A two story office building, over covered parking with associated parking lots, roadways, and landscaped areas are present on each property.

Spieker Properties (Spieker) purchased the Bellefield Office Park in March 1995. The initial purchase did not include the Building N (Aspenwood) and O (Magnolia) properties. Dalton, Olmsted & Fuglevand, Inc. (DOF), on behalf of Spieker, submitted an Independent Remedial Action Report (IRAP) (DOF 1995) to the Washington State Department of Ecology (Ecology) in June 1995. Based on the IRAP, Spieker requested a ‘No Further Action’ (NFA) letter for the initially purchased property which did not include Buildings N and O. Ecology requested that additional ground-water sampling and analysis be completed after reviewing the IRAP. The results of the requested work are documented in a report prepared by DOF (1996). Based on the IRAP and the results of the additional Ecology requested work, and after a restrictive covenant was recorded, Ecology issued an NFA letter for the initially purchased property on November 1, 1996. This 1996 cleanup is subject to a separate Periodic Review.