THE NEW LUTHER HOPKINS HONDA
FORMER KNOX LUMBER AND
MINNEAPOLIS MOLINE SITE
CLEANUP PROJECT SUMMARY
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Landmark designed the remediation of a 10-acre property in Hopkins prior to its redevelopment into a new state-of-the-art automobile sales and service facility. Landmark prepared the Response Action Plan for contaminants of concern that included metals, polynuclear aromatic hydrocarbons and petroleum-related contaminants. Landmark then provided oversight during property redevelopment.
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New Hopkins Honda
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Former lumber yard and farm implement manufacturing facility
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Because the new building and asphalt parking areas cover most of the property, Landmark was able to negotiate cleanup goals with the Minnesota Pollution Control Agency (MPCA) that allowed marginally impacted soil to remain on-site under the building and asphalt. This resulted in a significant cost savings for the client.
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The redevelopment required significant earthwork including excavation for utilities, soil correction under the building, site grading and an underground stormwater retention system. After excavating known “hotspot” areas, Landmark successfully managed several contingency issues including unexpected petroleum-impacted soil and groundwater encountered during construction of the underground stormwater retention system. Landmark designed an innovative soil vapor venting system that was approved by the MPCA. It was constructed with two vent pipes equipped with a rotary turbine to aggressively vent the stormwater system to prevent vapor build up.
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Earthwork during development
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For more information, contact:
Sherry Van Duyn, Vice-President
or Ken Haberman, President
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