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2. List of Superfund sites in Arizona - Wikipedia

   en.wikipedia.org/wiki/List_of_Superfund_sites_in...

   Maricopa: Groundwater contamination by VOCs including haloalkanes, alkyl halides and toluene, from landfilling of hazardous waste. Soil contamination by VOCs, heavy metals, pesticides and lime wastes. [11] 06/10/1986: 07/22/1987

3. Hassayampa, Arizona - Wikipedia

   en.wikipedia.org/wiki/Hassayampa,_Arizona

   In 1961, Maricopa County began operating a landfill in Hassayampa, covering 47 acres on the west side of the Hassayampa River. For an 18-month period from April 20, 1979, to October 28, 1980, the site was used to dispose of hazardous waste. As a result, the 10 acre portion of the landfill was classified as a Superfund site in 1987. Site cleanup ...

4. Arizona State Route 238 - Wikipedia

   en.wikipedia.org/wiki/Arizona_State_Route_238

   The road west of this point is actually a county route. This stretch of road is known as Maricopa Road (except for a brief portion signed as Smith Enke Road within the city of Maricopa) and serves as a direct route between the two towns as well as an access road for the Sonoran Desert National Monument. It was originally a dirt road from Gila ...

5. Hazardous waste in the United States - Wikipedia

   en.wikipedia.org/wiki/Hazardous_waste_in_the...

   "In terms of hazardous waste, a landfill is defined as a disposal facility or part of a facility where hazardous waste is placed in or on land and which is not a pile, a land treatment facility, a surface impoundment, an underground injection well, a salt dome formation, a salt bed formation, an underground mine, a cave, or a corrective action ...

6. Hazardous waste - Wikipedia

   en.wikipedia.org/wiki/Hazardous_waste

   "In terms of hazardous waste, a landfill is defined as a disposal facility or part of a facility where hazardous waste is placed or on land and which is not a pile, a land treatment facility, a surface impoundment, an underground injection well, a salt dome formation, a salt bed formation, an underground mine, a cave, or a corrective action ...

7. Maricopa County, Arizona - Wikipedia

   en.wikipedia.org/wiki/Maricopa_County,_Arizona

   Maricopa County (/ ˌ m ær ɪ ˈ k oʊ p ə /) is a county in the south-central part of the U.S. state of Arizona.As of the 2020 census the population was 4,420,568, [1] or about 62% of the state's total, making it the fourth-most populous county in the United States and the most populous county in Arizona, and making Arizona one of the nation's most centralized states.