Facility Site ID: 5883805 Cleanup Site ID: 5381

Site Description

The site is located in the northeast corner of what is now a Safeway parking lot and fuel facility.

Three separate soil and groundwater investigations took place on the subject property between 1992 and 2001. Petroleum hydrocarbon contamination was identified in the vicinity of former underground storage tanks and dry wells located in the north-central portion of the property. This contamination was attributed to United Builders, a former property owner. This contamination was found to be unrelated to contamination on the west side of the property that originated from a release at a former gas station (see the Tiger Oil 24th Ave & W Nob Hill site).

Cleanup Activities

Soil excavation was conducted in 2004. Contaminated soils were excavated from two areas in the north-central portion of the site. Confirmation samples collected from the limits of the excavation indicated that remaining soils did not contain petroleum hydrocarbons at concentrations above Model Toxics Control Act (MTCA) Method A cleanup levels. An environmental covenant was recorded for the property due to the presence of contamination on another portion of the property related to a release from an adjacent property to the west. Ongoing remedial activities continue to address the contamination originating from this adjacent property.

Cleanup Complete

Based upon cleanup activities and the recording of the restrictive covenant, Ecology has determined the site is no longer a threat to human health and the environment. Ecology issued a no further action determination in May 2015.

Periodic Review

Periodic reviews are conducted every 5 years by Ecology for sites that have institutional controls. The review is intended to examine the effectiveness of cleanup activities and to assure the continued protection of human health and the environment.

A Five-Year Periodic Review was completed for this site in December 2009 addressing contamination at the property not associated with the adjacent Tiger Oil Site contamination at other portions of the same tax parcel.

Periodic review results

The site continues to be occupied by a Safeway Fuel Center and parking lot. The environmental covenant for the site was recorded and is in place. This environmental covenant continues to reduce the potential for human exposure to contaminants.

Soil cleanup levels have not been met at the site; however, the cleanup action for the Property is determined to comply with cleanup standards under WAC 173-340-740(6) (f), since the long-term integrity of the containment system is ensured and the requirements for containment technologies have been met.

It is the conclusion of this review that the remedial actions taken to address the United Builders contamination at the northeast portion of the site are protective of human health and the environment.

Voluntary Cleanup Program

This site was cleaned up under our Voluntary Cleanup Program, which provides technical help to owners of contaminated sites.

Voluntary Cleanup Program customers pay fees to cover our costs for technical help and reviewing cleanup reports. Sites in this program must meet the same cleanup standards as the sites Ecology manages under legal orders.

Site use restrictions called institutional controls are in effect

Institutional controls can be fences, signs, or restrictions on how the property is used. For instance, an institutional control may prohibit installing drinking water wells or disturbing a protective cap that isolates contamination. These restrictions keep the contamination contained and keep people from being exposed to the contamination. The controls are usually listed in environmental covenants recorded with the county.

Periodic reviews are required when institutional controls are required at a site. Ecology conducts reviews to make sure the controls remain effective and the cleanup still protects human health and the environment. We conduct periodic reviews about every five years.

Environmental Covenant

County Recording #: 7387855
County Recording Date: 3/4/2004


  • Prohibit Soil Disturbance
  • Restrict All Ground Water Extraction/Well Installation
  • Restrict Land Use

Restricted Media

  • Groundwater
  • Soil
Legal 1
Document Title Document Date Document Type
United Builders (Mercy Property) Restrictive Covenant 3/4/2004 Environmental Covenant; Alternative Mechanism
Technical Reports 8
Document Title Document Date Document Type
United Builders 2015 Periodic Review Rpt 4/1/2015 Periodic Review (5 Year)
United Builders Sampling and Analysis Plan - Groundwater 8/4/2014 Sampling and Analysis Plan
United Builders Addednum 1 to Focused Subsurface Investigation 6/29/2014 Site Specific Technical Document - other
United Builders Focused Subsurface Investigation 5/8/2014 Site Specific Technical Document - other
United Builders (Mercy Development) Well Repair and Redevelopment Plan approval ltr 8/6/2013 Site Specific Administrative Document - other (Administrative correspondence)
United Builders December 2009 Periodic Review 12/1/2009 Periodic Review (5 Year)
United Builders (Mercy Development) Cleanup Report 4/22/2004 Remedial Action Report
United Builders (Mercy Development) Phase 2 Environmental Site Assessment Letter Rpt 3/25/2002 Site Specific Technical Document - other
Voluntary Cleanup Program 2
Document Title Document Date Document Type
United Builders VCP NFA Letter 5/28/2015 VCP Opinion on Site Cleanup – NFA
United Builders - VCP Opinion on Proposed Site Cleanup - No Further Action Likely 10/31/2014 Voluntary Cleanup Program Opinion – Other
There may be more documents related to this site. To obtain documents not available electronically, you will need to make a public records request.

Places to see print documents

  • Central Regional Office
    1250 W Alder St
    Union Gap, 98903-0009
    Please schedule an appointment to view print documents at this location.

Contaminants 2

Contaminant Type
Surface Water
Non-Halogenated Organics - Petroleum-Diesel RB RB
Non-Halogenated Organics - Petroleum-Other RB RB
Confirmed Above Cleanup Levels
Below Cleanup Levels
This contaminant list was based on our best information at the time it was entered. It may not reflect current conditions at the site.