Villa Park



    The site is located south of the Santiago Creek on the northeast corner of Santiago Canyon Road and Cannon Street in the City of Orange. The physical address is 5545 E. Santiago Canyon Road. Orange, CA 92862

Dates of Operation and Closure

    The County operated the site as a refuse disposal station from 1962 to 1966.

Size and Types of Waste

    The 15.785-acre site was constructed in an excavated gravel pit. Waste materials disposed at the site approximated 1,115,000 cubic yards of residential, commercial and inert wastes. The average depth of waste is approximately 80 feet. No liquid or hazardous wastes are known to have been disposed at the site.


  • Prior to 1962 The Sully-Miller Company operated the site as a sand and gravel pit.
  • 1962-1966 County leased the site and operated it as a refuse disposal station.
  • 1966 County ceased operations, closed the site and terminated the leases.
  • 1968 County Board of Supervisors initiated purchase of the site.
  • 1970 County installed a landfill gas (LFG) collection and control system.
  • 1971 County acquisition of the site was completed.
  • 1972 County installed an experimental LFG collection and control system.
  • 1978 City excavated approximately 25,000 cubic yards of waste for a Loma (now Cannon) Street realignment.
  • 1995 County completed installation of a comprehensive LFG system.
  • 2000 Site included in County’s Closed Landfill Environmental Assessment and Response (CLEAR) project and a site assessment report was submitted to the Local Enforcement Agency (LEA). No field work was required as part of this initial site assessment.
  • 2001 County was approached by a private developer interested in constructing a bike trail on the northern portion of the site.
  • 2002 County upgraded the LFG control system due to a proposed development of the adjacent Sully Miller property.
  • 2003 City of Orange Planning Commission deferred approval of Fieldstone Development’s residential development on the adjacent Sully Miller parcel east of site, pending submittal of a project size reduction. The LEA met with the residential plan’s proponent to discuss LFG mitigation measures to be integrated into the residential project design. The City Council ultimately reversed their approval of the project, barring further residential project proposals at site for one year.
  • 2004 The Regional Water Quality Control Board (RWQCB) reduced groundwater monitoring frequency from quarterly to annually.
  • 2005 The County was approached by a private company with a proposal to house containerized plants on the site.
  • 2006 The County was approached by private companies with proposals to use the site as a golf driving range or a public storage facility. The City expressed an interest in developing the site into a soccer facility. The City and County entered into discussions related to LFG probe and other infrastructure relocations necessary to facilitate a City street improvement project.
  • 2006-2007 City and County discussed a potential land swap of parcels owned by each entity to facilitate City road improvement plan project.
  • 2007 The County was approached by a private company with a proposal to purchase a portion of the site for development into a gas station or convenience store. A Developer expressed interest in acquiring the site for use as soccer fields or other recreational uses in conjunction with their proposed development of adjacent (former Sully-Miller) property. County submitted their Long Term Monitoring and Operational Plan to the LEA.
  • 2008 City began construction of their Santiago Canyon Road and Cannon Street widening projects. The LEA approved the County’s Long Term Monitoring and Operational Plan.
  • 2009 City completed its street widening project, and an additional 0.466 acres was added to the County’s property as part of a land swap between the City and County.
  • 2010 County is contemplating some form of alternative technology application for the site to use the methane produced as a beneficial, renewable energy source.
  • 2011 The County is preparing a landscape plan to re-vegetate the site with plant palette to allow the site to blend in with the surrounding open space area. The adjacent property to the north and east is undergoing an inert debris engineered fill operation to fill in the ground where sand and gravel was removed during former Sully Miller sand and gravel operations.  The property is scheduled to be redeveloped in the future by JMI Properties into the proposed Rio Santiago Project. A Notice of Intent for the preparation of an EIR for the project was completed by the city, but the EIR has not been released for comment yet.
  • 2012 The EIR for the adjacent proposed Rio Santiago project is expected to be released by the City in late April or early May this year. No areas of concern were listed on LEA inspection reports. 

Current Owner

    County of Orange.

Current Land Use

    Open space

Environmental Control Measures

    County conducts annual groundwater monitoring; operates the LFG collection and control system, conducts monthly perimeter probe monitoring, and quarterly instantaneous and integrated surface monitoring.

Click here for property location.

Click here for closed site information on Cal Recycle's website.


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Please contact us at 714-834-4000 if you have questions regarding this site.