CCP 07-09-1990 - Laserfiche WebLink

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. , . . A. Delta Environmental Consultants, Inc. 1801 Highway 8, Suite 114 St. Paul, MN 55112 612/636.2427 FAX:612/636.S552 June 28, 1990 Mr. Gary Berger City Administrator City of Arden Hills 1450 West Highway % Arden Hills, MN 55112 Subject: Soil Treatment Options KEM Milling Site Arden Hills, Minnesota Delta No. 10-89-385 Dear Mr. Berger: Delta Environmental Consultants, Inc. (Delta), has reviewed soil treatment options for the KEM Milling site. The purpose of this letter is to provide information for the city of Arden Hills on soil treatment options and costs. To date the time and materials costs incurred for the . inve3tigation and excavation of contaminated soils and preparation of the disposal options are approximately $3,600. This cost includes Delta, subcontractor, and chemistry fees. As presented in the city council meeting on June 25, 1990, approximately 50 cubic yards of petroleum contaminated soils are stockpiled on site. The alternative treatment options for petroleum contaminated soils considered include: . Thermal treatment . Land application A brief description of the feasibility of cach option is described below: Thermal Treatment Thermal treatment is an accepted technology for the treatment of petroleum contaminated soils. Two thermal treatment options exist. Both require Minnesota Pollution Control Agency (MPCA), Air Quality Department approval and transportation of contaminated soils to a treatment site. 1. High temperature thermal treatment - soils are burned at 3500 F to 5500 F, the volatiles then pass through an afterburner which operates at 14000F. Soils are frequently incorporated into asphalt. 2. Low temperature thermal treatment - soils are burned at 3500 F to 5500 F, the volatiles are emitted into the air. Soils are incorporated into asphalt. . The projected Delta and subcontractor costs for thermal treatment of the soil are estimated to be $2,300. Practical Solutions to Environmental Concerns