Hexcel Corp Structures
What's New?
Hexcel and Ecology are in the process of completing the Consent Decree, draft Cleanup Action Plan, Focused Feasibility Study report, Focused Remedial Investigation report, and State Environmental Policy Act Determination of Non-significance proposal. Once these documents are complete, they will go out for public comment.
Site Background
BSB Diversified (BSB) is the name of a cleanup site with three separate properties: BSB; J.H. Carr & Sons, Inc.; and, Hexcel Corporation Kent-Plant. This comment period is for cleanup activities for the Hexcel property only.
Hexcel is an industrial facility. Historically, a metal finishing and electroplating plant operated at the site. We require Hexcel to monitor groundwater to ensure that the current cleanup method is working.
Contamination on the property varies by location, and includes a chlorinated solvent called vinyl chloride.
Site Contamination
The groundwater under parts of Hexcel is contaminated with volatile organic compounds from the breakdown of a solvent degreaser called trichloroethene (TCE), The breakdown products include vinyl chloride. TCE was used in the maintenance and operation of a former metal plating operation at the Hexel facility.
Groundwater contamination
The major groundwater contamination likely originated from the TCE spilled or leaked at the BSB site. A soil-bentonite slurry wall that surrounds the BSB property and keeps the contaminated groundwater from leaving the BSB site. Historically, there were low concentrations TCE were detected at the Hexcel site. Today only volatile organic compounds that are breakdown products of TCE are detected at the Hexcel site.
Groundwater Contamination And Current Cleanup Actiities
• Trichloroethylene (also known as trichloroethene or TCE)
• Volatile organic compounds from the breakdown of TCE, including vinyl chloride
The contaminated groundwater is currently contained behind a clay-soil barrier within the entire perimeter of the BSB property. This barrier keeps the contaminated groundwater from leaving the BSB site. Historically, low concentrations of TCE were detected at the Hexcel site. Today only volatile organic compounds that are breakdown products of TCE are detected at the Hexcel site.
Hexcel monitors groundwater to ensure that the contaminants are breaking down through a cleanup method called enhanced in-situ (in place) bioremediation. To speed up that process, Hexcel is injecting a non-toxic food with the same bacteria that naturally lives at the site. This food feeds the bacteria and enables the population of bacteria to grow. The bacteria slowly breaks down the chemical contamination in the groundwater. We oversee and review the results of these cleanup activities to ensure they are working.
Documents 16
Legal 3
Document Title | Document Date | Document Type |
Hexcel Draft Environmental Covenant | 1/3/2022 | Environmental Covenant; Alternative Mechanism |
Hexcel Corp Structures Enforcement Order | 11/4/2005 | Enforcement Order |
Hexcel Corp Structures Agreed Order | 1/24/2003 | Agreed Order |
Public Information 1
Document Title | Document Date | Document Type |
EJScreen Report | 6/16/2018 | Public Participation Plan |
State Environmental Policy Act 2
Document Title | Document Date | Document Type |
Hexcel Draft SEPA Determination of Non-Significance | 1/3/2022 | SEPA Documents |
Hexcel Draft SEPA Checklist | 1/3/2022 | SEPA Documents |
Technical Reports 10
Document Title | Document Date | Document Type |
Environmental Monitoring Report, September 2022 | 12/13/2022 | Progress Report |
Hexcel Draft Cleanup Action Plan TABLES | 1/6/2022 | Cleanup Action Plan |
Hexcel Draft Cleanup Action Plan FIGURES | 1/6/2022 | Cleanup Action Plan |
Hexcel Draft Cleanup Action Plan FIGURE 2c Source-NonSource Site Map | 1/6/2022 | Cleanup Action Plan |
Hexcel Draft Cleanup Action Plan FIGURE 2b 2022 Site Map | 1/6/2022 | Cleanup Action Plan |
Hexcel Draft Cleanup Action Plan FIGURE 2a Historical Site Map | 1/6/2022 | Cleanup Action Plan |
Hexcel Draft Cleanup Action Plan | 1/6/2022 | Cleanup Action Plan |
Environmental Monitoring Report, September 2021 | 11/15/2021 | Progress Report |
Hexcel DRAFT Focused Feasibility Study | 8/31/2018 | Feasibility Study |
Hexcel DRAFT Focused Remedial Investigation | 8/30/2018 | Remedial Investigation Report |
Contaminants 2
Contaminant Type | Soil |
Groundwater |
Surface Water |
Air |
Sediment |
Bedrock |
---|---|---|---|---|---|---|
Halogenated Organics - Halogenated Organics | C | C | ||||
Non-Halogenated Organics - Petroleum Products-Unspecified | S | S |
- S
- Suspected
- C
- Confirmed Above Cleanup Levels
- B
- Below Cleanup Levels
- RA
- Remediated-Above
- RB
- Remediated-Below
- R
- Remediated