About the Landfill
In 2011, the MPCA ranked the Hopkins Landfill as the highest risk site of 112 sites in the Closed Landfill Program due to the potential for methane migration.
In 2013, a reconstruction project was completed to mitigate the problem. The project included:
- consolidating waste to create a 100+ ft clean soil buffer zone from adjacent properties
- installing a new methane gas collection & monitoring system
- constructing the landfill cap to meet current sanitary landfill standards
- installing a new site stormwater drainage system
Hopkins Landfill History
Click image for photos of the Hopkins Landfill through the years
- 1964 – 1971: Open Dump
- 1971 – 1980: Permitted Mixed Municipal Solid Waste (MMSW) Landfill
- 1980: Landfill closed in accordance with requirements in effect at the time.
- 1988: City investigates landfill gas, installs gas monitoring system, confirms migration.
- 1991: City installs passive barrier on east and south perimeter of landfill. Some gas still present in monitoring system.
- 1995: City and the Minnesota Pollution Control Agency sign a Binding Agreement giving the MPCA's Closed Landfill Program responsibility to manage the landfill. City continues ownership of property.
- 1995 – 1996: CLP installs an active gas extraction system. Flare begins operation in April 1996.
- 1998 – 2005: Additional gas wells installed to supplement flare efficiency.
- 2011: Hopkins Landfill is ranked #1 as the highest risk site in the CLP due to the potential for methane migration.
- 2013: MPCA landfill reconstruction project completed, including:
- waste consolidated to create a 100+ ft clean soil buffer zone from adjacent properties
- new methane gas collection & monitoring system installed
- landfill cap constructed to meet current sanitary landfill standards
- new site stormwater drainage system