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Bee-Jay Scales Site Investigation and Remediation

A site cleanup that will result in the excavation of over 7,400 cubic yards of impacted soil

Michigan

The Bee-Jay Scales site operated as an agricultural chemical distribution facility from the 1960s through 1980s. Soil and groundwater were impacted by fertilizer compounds such as nitrate and ammonia. Stantec performed several investigations to assess on- and off-site impacts, and completed pilot studies and interim remedial measures to evaluate and address the impacts.

The interim remedial measures in 2007 treated petroleum hydrocarbons by injecting a sodium persulfate solution, resulting in more than a 78% concentration reduction. We also closed the on-site lagoon, removing 13,000 gallons of water, stabilizing sediment/sludge, removing the liner/debris, placing approximately 1,000 pounds of calcium acetate into the excavation for continuing nitrate treatment by enhanced denitrification, and backfilling with clean soil.

A cleanup action plan was finalized in 2013 to address soil and groundwater cleanup objectives, and the proposed action includes soil excavation, in-situ bioremediation, institutional controls, and natural attenuation. The first phase will be completed in summer 2014, with excavation of over 7,400 cubic yards of nitrate and ammonia impacted soil.

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