Weyerhaeuser Co HG Chlor Alk
Facility Site ID:
28
Cleanup Site ID:
2272
Site Information
Read the 2015 review of cleanup site conditions and monitoring
In the mid-1950s, the Weyerhaeuser Company began production of chlorine and caustic for its pulp and paper mills. The production technology used elemental mercury. Leaks from pumps, valves, and process lines resulted in mercury releases to soils. In the mid-1970s, this production process was replaced.
Over time, Weyerhaeuser has removed mercury-contaminated soils and monitored groundwater. It also evaluated possible impacts to the nearby Columbia River. Ecology found the cleanup complete in 2005.
In the mid-1950s, the Weyerhaeuser Company began production of chlorine and caustic for its pulp and paper mills. The production technology used elemental mercury. Leaks from pumps, valves, and process lines resulted in mercury releases to soils. In the mid-1970s, this production process was replaced.
Over time, Weyerhaeuser has removed mercury-contaminated soils and monitored groundwater. It also evaluated possible impacts to the nearby Columbia River. Ecology found the cleanup complete in 2005.
- 1991 Agreed Order No. 91-TCI-102, requiring Weyerhaeuser to submit a plan to provide groundwater protection from and monitoring of mercury contamination
- 2001 Final Remedial Investigation
- 2001 Agreed Order No. DE 01TCPIS-1968, requiring Weyerhaeuser to submit a final Feasibility Study
- 2001 Final Feasibility Study
- 2004 Agreed Order No. 1037, requiring Weyerhaeuser to implement the final Cleanup Action Plan
- Final Cleanup Action Plan
Axiall Corporation currently operates Eagle US 2 LLC at the site, and leases part of the property to Hasa Inc.
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.
Institutional Controls 1
Environmental Covenant
County Recording #:
3522277
County Recording Date:
5/14/2015
Restrictions/Requirements
- Prohibit Soil Disturbance
- Restrict Access
- Restrict All Ground Water Extraction/Well Installation
- Restrict Land Use
- Restrictive Signage
Restricted Media
- Groundwater
- Soil
Documents 14
Legal 4
| Document Title | Document Date | Document Type |
| Weyerhaeuser Longview Chlor-Alkali Restrictive Covenant | 5/14/2015 | Environmental Covenant; Alternative Mechanism |
| Weyerhaeuser Longview Chlor-Alkali Agreed Order No. 1037 | 4/9/2004 | Agreed Order |
| Weyerhaeuser Longview Chlor-Alkali Agreed Order No. DE 01PCPIS-1968 | 2/7/2001 | Agreed Order |
| Weyerhaeuser Longview Chlor-Alkali Agreed Order No. 91-TCI-102 | 10/8/1991 | Agreed Order |
Outreach Information 1
| Document Title | Document Date | Document Type |
| Weyerhaeuser Longview Chlor-Alkali Fact Sheet Proposed AO 1037 to implement CAP | 2/1/2004 | Fact Sheet\Public Notices |
Technical Reports 9
| Document Title | Document Date | Document Type |
| Annual Compliance Monitoring Report (2019 - 2020) | 5/12/2020 | Monitoring Report |
| Annual Compliance Monitoring Report (2018 - 2019) | 6/10/2019 | Monitoring Report |
| Annual Compliance Monitoring Report (2017 - 2018) | 5/15/2018 | Monitoring Report |
| Annual Compliance Monitoring Report (2016 - 2017) | 5/31/2017 | Monitoring Report |
| 2015 Weyerhaeuser Longview Chlor-Alkali Periodic Review | 7/23/2015 | Periodic Review (5 Year) |
| Weyerhaeuser Longview Chlor Alkali Plant Compliance Monitoring Plan | 9/23/2004 | Site Specific Technical Document - Other |
| Weyerhaeuer Longview Final Cleanup Action Plan | 1/28/2004 | Cleanup Action Plan |
| Weyerhaeuer LongviewChlor-Alkali Final Remedial Investigation | 7/25/2001 | Remedial Investigation Report |
| Weyerhaeuser Longview Chlor-Alkali Final Feasibility Study | 2/28/2001 | Feasibility Study |
There may be more documents related to this site. To obtain documents not available electronically, you will need to make a public records request.
Contaminants 1
| Contaminant Type | Soil |
Groundwater |
Surface Water |
Air |
Sediment |
Bedrock |
|---|---|---|---|---|---|---|
| Metals - Metals Priority Pollutants | C | 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.