Facility Site ID: 9198 Cleanup Site ID: 1367

2019 Periodic Review Completed

Environmental cleanup is complete at the site, and the periodic review in 2019 shows that cleanup work remains effective in protecting the health of people and the environment.

After cleanup, some petroleum contaminated soil remained on the site. To prevent exposure to that contamination, a restrictive covenant was filed for the site in 2013. The covenant restricts property use and requires maintenance of a pavement cap to eliminate exposure to contaminated soil.

When an environmental covenant exists for a cleanup site, Ecology reviews site conditions at least every five years to ensure long-term effectiveness of the cleanup action.

Based on Ecology's inspection of the site on May 23, 2018, the Plaza building and asphalt cover and/or concrete sidewalk on the City's right-of-way continue to eliminate exposure to contaminated soils. 

From January 3 to February 3, 2019, Ecology held a comment period to provide the public with an opportunity to comment on conditions at the site. No comments were received and Ecology finalized the periodic review report.

Periodic Review Report-Final

Site Description

The Pacific Plaza Garage entirely occupies the approximately 0.2 acre site.  The building is a multi-level parking garage and office space. The site is located among urban commercial and business properties.  The building was constructed in the 1970s.  Later remodeling revealed an underground storage tank (UST) on the property.

Investigators found that the UST had leaked and contaminated nearby soil with diesel and heavy oil petroleum hydrocarbons. Groundwater contamination and volatile organic compounds were not a concern at the site.


Pacific Plaza Garage cleaned up the site under Ecology's Voluntary Cleanup Program.

In 2008, Pacific Plaza Garage:
  • Removed the UST, 700 gallons of liquid petroleum products, and 100 gallons of sludge.
  • Excavated, removed, and disposed of 472 tons of contaminated soil.

After cleanup, soil samples collected at the site indicated that all but two localized areas were below petroleum cleanup levels. Excavation of more soil from the two remaining contaminated areas was limited by the location of the garage's structural foundation columns and the Pacific Ave right-of-way.  The localized pockets of petroleum contaminated soil were left in place and covered by asphalt/concrete pavement to eliminate people's contact with contaminated soils.  

In 2013, Ecology removed the Pacific Plaza Garage site from the Hazardous Sites list after holding a public comment period. 

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 #: 201302210732
County Recording Date: 2/21/2013


  • Prohibit Soil Disturbance

Restricted Media

  • Soil
Legal 1
Document Title Document Date Document Type
Pacific Plaza Garage Restricitve Covenant/Environmental Covenant 2/21/2013 Environmental Covenant; Alternative Mechanism
Leaking Underground Storage Tank 2
Document Title Document Date Document Type
Final Environmental Review 12/18/2009 LUST - Site Assessment Report
Underground Storage Tank Closure Report 12/31/2008 LUST Status Report
Public Information 2
Document Title Document Date Document Type
Pacific Plaza 2019 Periodic Review Response Summary-No Comments 2/13/2019 Responsiveness Summary
Pacific Plaza HSL Delisting Fact Sheet 5/29/2013 Fact Sheet\Public Notices
Technical Reports 3
Document Title Document Date Document Type
Pacific Plaza Garage Notice of Periodic Review Conducted 2/13/2019 Periodic Review (5 Year)
Periodic Review Report-Final 2/4/2019 Periodic Review (5 Year)
Pacific Plaza LLC SHA FINAL 10/21/2010 Site Hazard Assessment Report
Voluntary Cleanup Program 2
Document Title Document Date Document Type
Pacific Plaza Garage SW1230 - VCP NFA 3/26/2013 VCP Opinion on Site Cleanup – NFA
SW1230 FA Opinion Pacific Plaza Garage 10/8/2012 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

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

Contaminants 1

Contaminant Type
Surface Water
Non-Halogenated Organics - Petroleum Products-Unspecified RB B
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.