ES Projects

St. Mary's Landfill

  • Objectives
    To ensure the safety of the public and the environment by monitoring, managing, and controlling landfill gas and site safety.
  • Location
    425 N. Grande Ave
  • Waste Acreage
    10.4
  • Operation Dates
    1963 - 1973
  • Status
    Monitored Only Site
  • Type
    Groundwater Protection Project
  • Annual Budget
    Approximately $20,000
  • Contact
    City of Tucson - Environmental Services 520-791-3175
  • Description
    St. Mary’s Landfill is located at Menlo Park near Grande Ave and St. Mary’s Rd. The landfill was used for the disposal of Class II trash and debris consisting primarily of green waste and construction debris. Today the City monitors 29 landfill gas probes on a quarterly basis, and inspects the landfill annually for erosion and other potential issues.
  • Additional Info
    Evaluation of historical operational records from the landfill indicates that it is a low future environmental risk.
  • Activities
    Inspections, Landfill Gas Monitoring
  • Last Update
    Wednesday Jun 8, 2022
View this project on the Environmental Management Projects Map
Project photo for St. Mary's Landfill

Project Details

Status Updates

  • October-December
    The City is scheduled to conduct an annual closed landfill inspection. A report will be prepared following this inspection documenting the site conditions.
  • 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.
  • March 2011
    The City completed the Comprehensive Landfill Investigation and Closed Landfill Inspection reports. This landfill is discussed in both of these reports. These reports are available in the report/attachment section of this website.
  • 1995-1998
    The City installed shallow landfill gas monitor probes to monitor methane concentrations between the landfill and nearby businesses and began routine monitoring.

Pictures

St Mary’s Landfill exists underneath the open field at Menlo Park.

Attachments

  • Closed Landfills Inspection and Maintenance Report

    The City of Tucson - Environmental Services owns and maintains fifteen closed regulated and non-regulated landfills. This guidance report provides the procedures for inspecting and maintaining those landfills. The text portion of this report is available at this link. To review the full document contact the Environmental Services office at 520-791-3175.

  • Comprehensive Landfill Investigation Final Report

    The City of Tucson, Environmental Services began the Comprehensive Landfill Investigation in 2000 to evaluate groundwater quality downgradient of landfills owned or operated by the City of Tucson which are not regulated by Sate or Federal Agencies. This is the final report. The text portion of this report is available at this link. To review the full document contact the Environmental Services office at 520-791-3175.