Freeway through a Superfund Siteby Thomas M. Monchak, (M.ASCE), Transportation Mgr.; Daniel, Mann, Johnson, & Mendenhall, Phoenix, AZ,
Charles K. Eaton, (M.ASCE), State Traffic Engr.; Arizona DOT, Phoenix, AZ,
Serial Information: Civil Engineering—ASCE, 1995, Vol. 65, Issue 11, Pg. 56-59
Document Type: Feature article
The Red Mountain Freeway is the centerpiece of a 171 km $2.6 billion system of freeways and expressways under construction in Maricopa County, Ariz. For 3 km in Tempe, the freeway passes through the Indian Bend Wash Superfund Site, which was placed on the National Priorities List in 1983 because of contaminated ground water. To skirt potential hazardous-waste deposits, Arizona DOT is building 1.6 km of the Red Mountain Freeway in the floodplain of the Salt River. Also, the department negotiated with EPA a one-of-a-kind formal Agreement and Covenant Not to Sue under which ADOT would not be responsible for any existing ground-water contamination within the purchased right-of-way and, in return, would clean up all landfill material in the freeway construction work area.
Subject Headings: Highways and roads | Waste sites | Groundwater pollution | Construction materials | Infrastructure construction | Mountains | Hazardous wastes
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