Lumen Building


The Lumen on Lagoon Building was proposed as a mixed condominium/commercial project in the rapidly developing Uptown Area of Minneapolis. The project added condominiums and commercial space in a desirable location near the heart of Uptown.


The site contained an older underutilized building that in the past housed a battery manufacturing company. During operation on the property soil was impacted by heavy metals and polyaromatic hydrocarbons (PAH) compounds. The old building was demolished and metals impacted soil with high lead concentrations was identified as an environmental problem on the site.

Environmental issues and the cleanup process

  • Metals, PAH and petroleum impacted soil was discovered during the environmental investigation of the site.
  • The lead concentrations in soil were very high due to past lead battery manufacture on the property.
  • The impacted soil was excavated from the site under a Minnesota Pollution Control Agency (MPCA) approved plan and taken to an industrial landfill. Some of the soil needed treatment prior to disposal offsite.
  • A total of 4,500 cubic yards of impacted soil were excavated and removed from the site to accommodate the residential/commercial development.

Redevelopment of the site

  • The MPCA worked with the developer to investigate the site and to develop a cleanup plan compatible with the proposed land use.
  • Cleanup of the site soil allowed the residential/commercial development to proceed.
  • Forty-four condominium units were built in the five story building, a portion of which was sheathed in decorative copper.
  • Underground parking is available to tenants of the Lumen on Lagoon Building.
  • Six commercial units on the street level were completed and leased to various tenants.

Environmental and economic benefits

  • An environmental problem was remediated at the site allowing for the development.
  • Condominiums were made available at a choice location in the Uptown Area of Minneapolis.
  • The owner occupied units and commercial tenants contribute to the tax base of the Minneapolis economy.

Assurances received

February 14, 2007 – No Further Action for soils was issued.

Institutional controls

Due to the excavation and removal of impacted soil no institutional controls were required at the site.

Project partners

  • Ackerberg Group was the developer.
  • MPCA project Voluntary Investigation and Cleanup staff are Ed Olson (Project Manager) and John Betcher (Hydrologist). MPCA Petroleum Brownfields Program staff are Mark Koplitz (Project Manager) and Bassou Oulgout (Hydrologist).
  • American Engineering and Testing was the environmental consultant.
  • Enpro Assessment Corporation was involved in evaluating the property.