Congress & Nearmont Landfills
The Congress and Nearmont Landfills are located just south of Congress St on the western bank of the Santa Cruz River. These landfills were used for the disposal of construction debris and municipal solid waste. The two landfills were slated to be developed as a cultural park as part of the Rio Nuevo project. Using funding from the Rio Nuevo project, the City constructed and operated an aerobic bioreactor at the two landfills to stabilize the land surface so that development could proceed. The bioreactor operated from 2001 to 2008 and was dismantled in April 2009 due to lack of continued funding. Today the City monitors boundary landfill gas probes. The landfill is owned and maintained by the City of Tucson.
View this project on the Environmental Management Projects Map
January, April, July, & October
The City conducts quarterly landfill gas monitoring at perimeter probes during these months every year to monitor for methane migration at the property boundary.
The City is scheduled to conduct an annual closed landfill inspection. A report will be prepared following the inspection, documenting the site conditions. The latest report should be available for download in the Attachments/Reports section of this website.
The City conducted monitoring of one perched well. An annual monitoring event is scheduled for July 2013. An annual monitoring report will be prepared documenting the results.
The City conducted an annual groundwater monitoring event for perched and regional wells. The report is in the Reports/Attachments part of this website.
December 6, 2012
Completed the 2012 groundwater monitoring report. The report is available at Reports/Attachments section of this website.
January 4, 2011
The Bioreactor Project was withdrawn from the Arizona Department of Environmental Quality (ADEQ) Voluntary Remediation Program, and transferred to Environmental Services for routine landfill monitoring and maintenance. ADEQ agreed that the City adequately met the objectives of the 2003 work plan for the 2-acre site.
The City installed four groundwater monitor wells and began routine monitoring.
The City installed shallow landfill gas monitor probes to monitor methane concentrations between the landfill and nearby homes and began routine monitoring.