Spokane Custom Wood Treating

724 N Perry Spokane, Spokane County
Facility Site ID: 690 Cleanup Site ID: 1319

More about cleanup

Site Background

Spokane Custom Wood Treating preserved commercial lumber with chemicals from the mid-1970s through 1996. These chemicals included pentachlorophenol (PCP) dissolved in diesel fuel or fuel oil until it was replaced with copper naphthenate.

Sampling at the site found PCP, diesel, and polycyclic aromatic hydrocarbons (PAHs) in soil at levels above what is allowed by state regulations. PAHs are a byproduct of the incomplete burning of organic substances such as diesel or fuel oils. The contaminated areas of concern were: 1) the hoist and vault area, 2) the dip tank along the eastern property boundary, and 3) the area northwest of the dip tank near test pit 5. Initial sampling of groundwater detected diesel and penta. However, follow-up sampling did not detect either chemical.

Cleanup

Cleanup was completed from 1998 to 2004, and included disposing hazardous wastes and excavating contaminated soil. About 1,531 cubic yards of contaminated soil remains because excavation would have risked the structural integrity of a neighboring building. Engineering controls, including asphalt and concrete paving and stormwater management systems, contain remaining contaminated soil. 

Following cleanup, we removed the site from our Hazardous Sites List.

Periodic reviews

Ecology staff visited the site January 21, 2015, and found no evidence of excavation or other ground disturbance. The property is now Iron Bridge Office Campus. Following a 30-day public comment period during which no comments were received, the periodic review report became final.  

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 #: 5039582
County Recording Date: 3/1/2004

Restrictions/Requirements

  • Ongoing Maintenance of Remedy
  • Prevent the Reuse or Relocation of Site Soil
  • Prohibit Soil Disturbance

Restricted Media

  • Soil
Places to see print documents
Legal 1
Document Title Document Date Document Type
Spokane Custom Wood Treating - Restrictive Covenant 3/1/2004 Environmental Covenant; Alternative Mechanism
Outreach Information 1
Document Title Document Date Document Type
Spokane Custom Wood Treating - Fact Sheet Proposed Delisting 5/1/2004 Fact Sheet\Public Notices
Technical Reports 4
Document Title Document Date Document Type
Spokane Custom Wood Treating - Notification to Sell Property 5/2/2023 Site Specific Administrative Document - other (Administrative correspondence)
Spokane Custom Wood Treating - Third Periodic Review 8/17/2022 Periodic Review (5 Year)
Spokane Custom Wood Treating - Second Periodic Review 12/9/2015 Periodic Review (5 Year)
Spokane Custom Wood Treating - Site Hazard Assessment 8/1/1996 Site Hazard Assessment Report
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

  • Eastern Regional Office
    N 4601 Monroe St
    Spokane, 99205-1265
    Please schedule an appointment to view print documents at this location.

Contaminants 2

Contaminant Type
Soil
Groundwater
Surface Water
Air
Sediment
Bedrock
Non-Halogenated Organics - Petroleum Products-Unspecified C
Non-Halogenated Organics - Phenolic Compounds C
S
Suspected
C
Confirmed Above Cleanup Levels
B
Below Cleanup Levels
RA
Remediated-Above
RB
Remediated-Below
R
Remediated
This contaminant list was based on our best information at the time it was entered. It may not reflect current conditions at the site.