Facility Site ID: 1277004 Cleanup Site ID: 7037

Site Released From Environmental Covenant

Environmental cleanup is complete at the site and no further cleanup actions are needed. Ecology is in the process of removing the environmental covenant from the site. 

Ecology held a comment period from June 3 to July 6, 2021, and asked the public to comment on the proposal to remove Environmental Covenant Number 201312260516 from the site. We received no public comments during the comment period. 

Site Description

The Jefferson Avenue Site is located at 2112-2122 Jefferson Avenue in Tacoma. The area was used for houses, a gas station, automobile sales and repair, welding, and steel fabrication. The structures were removed in 2002, leaving the parcels vacant.

In 2017, the City of Tacoma sold the property, which is being developed for housing and offices. 

Site Cleanup

In 1995, three 2,000-gallon and one 10,000-gallon underground storage tanks (USTs) and the associated piping were removed. Approximately 600 to 800 cubic yards of petroleum-contaminated soil were stockpiled on the site. About two years later, testing of the stockpile indicated that petroleum hydrocarbons were no longer detected. 

In 2002, one 500-gallon waste oil UST, one 1,800-gallon gasoline UST and associated piping, and a hydraulic hoist were removed. Approximately 175 cubic yards of gasoline-contaminated soil were removed from the area where the USTs were located and disposed of off-site. After soil removal, there was no further soil contamination above state cleanup levels in that area.  Groundwater samples indicated contamination with gasoline and benzene concentrations above state cleanup levels.

Soil collected from the hoist excavation was contaminated with petroleum and about 220 cubic yards of soil were removed and disposed of off-site. Water collected from the excavation showed diesel- and oil-range petroleum hydrocarbons were above state cleanup levels.

Six groundwater monitoring wells were installed to determine conditions at the site due to the known presence of gasoline- and diesel-range hydrocarbons in groundwater from leaks from the USTs and the hoist. Between 2004 and 2005, diesel-range hydrocarbons were detected in one well. But continued monitoring showed petroleum contamination decreased to below cleanup levels.

A brownfields assessment was conducted in 2012 to determine if any USTs and contamination remained at the site. Results showed the USTs had been removed and soil conditions were below the cleanup standard. One monitoring well detected arsenic above the cleanup level in groundwater.

Shallow groundwater in the area of the site is not typically used for drinking water. Ecology decided that institutional controls could be used to address the arsenic that was found in groundwater in one area. 

An environmental covenant was recorded for the site in 2013 because arsenic contamination was detected in groundwater after cleanup. Ecology issued a No Further Action (NFA) letter in 2014. 

Arsenic in groundwater was measured again in 2019-2020. The amount of arsenic had decreased over time, but remains slightly above the cleanup level in one well. The amount is low and it is below the state background level. Groundwater will not be used for drinking because the city supplies drinking water to the Site.

In 2021, it was Ecology’s opinion that the covenant was no longer required, and the owner requested it be removed from the property.

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 #: 201312260516
County Recording Date: 12/26/2013


  • Restrict All Ground Water Extraction/Well Installation

Restricted Media

  • Groundwater
Legal 4
Document Title Document Date Document Type
City Properties Cleanup - Termination & Release of Restrictive Covenant 7/13/2021 Environmental Covenant; Alternative Mechanism - Removed
City Properties Cleanup - Environmental Covenant 7/13/2021 Environmental Covenant; Alternative Mechanism
Jefferson Avenue Site Request Removal from Environmental Covenant 4/29/2021 Environmental Covenant; Alternative Mechanism - Removed
Jefferson Avenue aka City Properties Cleanup Site Environmental Covenant 12/26/2013 Environmental Covenant; Alternative Mechanism
Public Information 5
Document Title Document Date Document Type
Jefferson Ave Responsiveness Summary--No Comments 7/7/2021 Responsiveness Summary
Jefferson Avenue Release from Covenant Fact Sheet 5/13/2021 Fact Sheet\Public Notices
Jefferson Avenue Site Responsiveness Summary (no comments) 2/18/2020 Responsiveness Summary
Jefferson Avenue Site Delisting Responsiveness Summary 6/10/2014 Responsiveness Summary
Jefferson Avenue Site Fact Sheet for Proposed Removal from the Hazardous Sites List 4/1/2014 Fact Sheet\Public Notices
Technical Reports 10
Document Title Document Date Document Type
Jefferson Avenue Site - Environmental Covenant Removal Document 7/7/2021 Site Specific Administrative Document - other (Administrative correspondence)
City Properties Cleanup - Covenant Restriction Removal Request 4/14/2021 Site Specific Administrative Document - other (Administrative correspondence)
Terrestrial Ecological Evaluation-Jefferson Avenue Site; VCP: SW7037 1/25/2021 Terrestrial Ecological Evaluation
Jefferson Avenue Site - Groundwater Monitoring Results & Restrictive Covenant Release request 8/24/2020 Groundwater Monitoring Report
City Properties Cleanup - Notice of Periodic Review 1/30/2020 Periodic Review (5 Year)
Periodic Review Report - Final 1/27/2020 Periodic Review (5 Year)
Technical Memorandum: Historical Review of the Jefferson Avenue Site 9/28/2018 Site Specific Technical Document - other
City Conveyance of Jefferson Ave Site 8/21/2017 Site Specific Administrative Document - other (Administrative correspondence)
Jefferson Ave Site Targeted Brownfields Assessment 1/1/2013 Remedial Investigation / Feasibility Study
City Properties Cleanup SHA FINAL 10/19/2010 Site Hazard Assessment Report
Voluntary Cleanup Program 5
Document Title Document Date Document Type
Jefferson Avenue Site - SW1724 - No Further Action 3/24/2021 VCP Opinion on Site Cleanup – NFA
Jefferson Avenue Site - SW1724 - VCP Acceptance 11/3/2020 VCP Administrative Document
Jefferson Avenue Site - SW1724 - VCP Agreement 9/29/2020 VCP Administrative Document
Jefferson Avenue Site - SW1724 - VCP Application 9/29/2020 VCP Administrative Document
Jefferson Ave Site SW1315 - VCP NFA 2/12/2014 VCP Opinion on Site Cleanup – NFA
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

  • Southwest Regional Office
    300 Desmond Dr SE
    Lacey, 98503-1274
    Please schedule an appointment to view print documents at this location.

Contaminants 5

Contaminant Type
Surface Water
Metals - Metals Priority Pollutants B
Non-Halogenated Organics - Non-Halogenated Solvents RB RB
Non-Halogenated Organics - Polycyclic Aromatic Hydrocarbons B B
Metals - Arsenic RA
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.