14610 Purdy Dr NW, Gig Harbor, WA 98332


Ecology Proposes Removing the Site from the Hazardous Sites List

In 2019, the Department of Ecology reviewed conditions at the Gig Harbor Transmission cleanup site and determined that no further cleanup actions are needed because the site meets state cleanup levels. Ecology had ranked the site's potential risk by comparing it to other known sites and put it on the Hazardous Sites List. Once a ranked site is cleaned up, a public comment period is required before a site can be removed from the list.

Ecology invites your comments on removing the site from the Hazardous Sites List during the public comment period. Your comments are considered before the site is removed from the list. After the comment period ends, Ecology will post responses to the comments on this webpage.


The site is approximately 0.35 acres in a commercial location, surrounded by commercial and residential properties. Currently the site is an automotive repair station specializing in transmission repair.


The soil was contaminated with oil-range petroleum hydrocarbons, carcinogenic polycyclic aromatic hydrocarbons (cPAHs) and lead. A leaky hydraulic lift used to raise cars for undercarriage cleaning before servicing is the likely source of the releases.  

One release occurred before March 2009 and another happened between February 2010 and January 2017. The leaking oil ran into lined and unlined trenches next to the lift. After each release, the owner removed and disposed of the contaminated soil and replaced it with clean material. After each cleanup, testing indicated soil contamination was below state cleanup levels.

Ecology evaluated the site for its potential risk to human health and the environment, ranked it by comparing it to other known sites, and put it on the Hazardous Sites List. Based on possible contamination of groundwater, Ecology ranked the site a 3, on a scale of 1 to 5 with 1 being the highest potential risk.

In 2017, the owner entered Ecology's Voluntary Cleanup Program to clean up the site on their own. After joining the program, the owner confirmed soil collected from the two trenches located near the lift was below state cleanup levels for petroleum and lead contamination. 

A  groundwater monitoring well was installed near the hydraulic lift. Quarterly groundwater sampling conducted in 2018 confirmed that petroleum hydrocarbons, cPAHs, cadmium, chromium, and lead concentrations in groundwater at the site were below state cleanup levels.



Map showing site location as Pierce County, WA SITE INFORMATION


View Electronic Documents

Cleanup Site Details Report

Facility Site ID: # 11876

Cleanup Site ID: 1952

Gig Harbor, Pierce County

Status: Cleanup Started   Get definitions of Status terminology

Comment Period:
APRIL 25, 2019 - MAY 28, 2019

Tim Mullin
Site Manager
(360) 407-6265

Nancy Davis
Public Involvement Coordinator
(360) 407-0067

Document Repositories:

Southwest Regional Office
300 Desmond Dr SE
Lacey, 98503-1274

Gig Harbor Library
4424 Point Fosdick Drive NW
Gig Harbor, 98335