Unocal Bulk Plant 0853
Facility Site ID:
346
Cleanup Site ID:
4713
Site Description
The Site has been operating as a bulk fuel plant since 1921. The Site consisted of a warehouse, loading racks, underground piping, barrel-filling area, heating oil underground storage tank and aboveground storage tanks. A maintenance building was built in 1940, loading racks removed and replaced in 1950 and again in 1990, an office building constructed in 1964, and two dispenser islands, a canopy and paved portions of the property were added between 1998 and 2002.
In 1990, when the loading racks were replaced, an investigation revealed release of petroleum products to soil and groundwater.
After a Site Hazard Assessment conducted in 1991, the Site was ranked a “1” on the Hazardous Sites List. The Hazardous Sites List is a statewide list of contaminated properties. Sites can be ranked from a “1” to “5”. A rank of “1” is the highest level of environmental concern compared to other sites on the List, and a rank of “5” is the lowest.
In 1990, when the loading racks were replaced, an investigation revealed release of petroleum products to soil and groundwater.
After a Site Hazard Assessment conducted in 1991, the Site was ranked a “1” on the Hazardous Sites List. The Hazardous Sites List is a statewide list of contaminated properties. Sites can be ranked from a “1” to “5”. A rank of “1” is the highest level of environmental concern compared to other sites on the List, and a rank of “5” is the lowest.
Cleanup Activities
Contaminated soil was excavated and removed, but groundwater contamination remained. An oxygen compound was injected to help the contamination break down. Between 1990 and 2018, soil and groundwater were sampled many times and in 2018, the data showed that petroleum was no longer present above state cleanup levels.
In July 2020, Ecology removed this Site from the Hazardous Sites List.
In July 2020, Ecology removed this Site from the Hazardous Sites List.
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.
Documents 11
Public Information 1
| Document Title | Document Date | Document Type |
| Unocal Bulk Plant 0853 - Proposed Removal from the Hazardous Sites List Fact Sheet | 6/2/2020 | Fact Sheet\Public Notices |
Technical Reports 6
| Document Title | Document Date | Document Type |
| Unocal Bulk Plant 0853 - Cleanup Action Report | 12/2/2019 | Site Specific Technical Document - other |
| Unocal Bulk Plant 0853 - Site Investigation Summary Report | 12/21/2018 | Site Specific Technical Document - other |
| Unocal Bulk Plant 0853 - Site Assessment Work Plan | 12/14/2017 | Site Specific Technical Document - other |
| Unocal Bulk Plant 0853 - Site Assessment Report | 2/28/2014 | Site Specific Technical Document - other |
| Unocal Bulk Plant 0853 - Fourth Quarter 2012 GW Monitoring Rpt | 2/26/2013 | Groundwater Monitoring Report |
| Unocal Bulk Plant 0853 - Conceptual Site Model | 9/27/2012 | Site Specific Technical Document - other |
Voluntary Cleanup Program 4
| Document Title | Document Date | Document Type |
| Unocal Bulk Plant 0853 - VCP Opinion on Site Cleanup - No Further Action | 1/29/2020 | VCP Opinion on Site Cleanup – NFA |
| Unocal Bulk Plant 0853 - VCP Opinion on Revised Site Assessment Work Plan | 2/16/2018 | Voluntary Cleanup Program Opinion – Other |
| Unocal Bulk Plant 0853 - VCP Opinion on Site Assessment Work Plan | 1/10/2018 | Voluntary Cleanup Program Opinion – Other |
| Unocal Bulk Plant 0853 - VCP Opinion on Proposed Site Cleanup - Further Action | 10/27/2015 | 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 Office1250 W Alder StUnion Gap, 98903-0009Please schedule an appointment to view print documents at this location.
Contaminants 4
| Contaminant Type | Soil |
Groundwater |
Surface Water |
Air |
Sediment |
Bedrock |
|---|---|---|---|---|---|---|
| Non-Halogenated Organics - Benzene | RB | |||||
| Non-Halogenated Organics - Petroleum-Diesel | RB | RB | ||||
| Non-Halogenated Organics - Petroleum-Gasoline | RB | RB | ||||
| Non-Halogenated Organics - Petroleum-Other | RB |
- 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.