Maine DEP Second Notice of Violation to Mallinckrodt/Medtronic for Site Remediation Failures
Summary
Maine DEP issued a second Notice of Violation to Mallinckrodt US LLC/Medtronic for failing to make meaningful progress on remediating a former chloralkali facility in Orrington, Maine. The NOV addresses unresolved contamination from mercury and chloropicrin, failure to remove the industrial sewer, and lack of required financial assurance mechanisms. This follows a first NOV issued March 19, 2025, and DEP's determination that the company's response was insufficient.
What changed
The Maine Department of Environmental Protection has issued its second Notice of Violation to Mallinckrodt US LLC/Medtronic, citing persistent non-compliance with remediation orders dating back to 2008. The violations include: (1) large areas of soil contaminated by mercury and chloropicrin above site-specific standards established by the Board of Environmental Protection Order; (2) failure to remove the industrial sewer; and (3) failure to establish required financial assurance mechanisms. The DEP's March 2025 NOV response was deemed insufficient to satisfy the Orders' clear requirements.
Mallinckrodt must immediately resume remediation efforts to address all outstanding contamination, remove the industrial sewer, and establish the required financial assurance mechanism. The DEP expects compliance in accordance with Maine law and existing departmental orders. Given the long regulatory history dating to 2008, and the company's pattern of non-compliance, entities with environmental remediation obligations should review their own compliance status and financial assurance requirements.
What to do next
- Resume site remediation efforts immediately to address mercury and chloropicrin contamination
- Remove the industrial sewer as required by the 2008 and 2010 Orders
- Establish the required financial assurance mechanism for site cleanup
Archived snapshot
Apr 6, 2026GovPing captured this document from the original source. If the source has since changed or been removed, this is the text as it existed at that time.
Maine DEP Takes Further Action Against Mallinckrodt US LLC/Medtronic for Compliance Issues
Maine Department of Environmental Protection sent this bulletin at 10/22/2025 11:43 AM EDT
| | # --- PRESS RELEASE ---
For Immediate Release | | | |
| \| \|
Maine DEP Takes Further Action Against Mallinckrodt US LLC/Medtronic for Compliance Issues
AUGUSTA, October 22, 2025 — The Department of Environmental Protection (DEP) has issued a second Notice of Violation (NOV) to Mallinckrodt US LLC/Medtronic related to the lack of meaningful progress remediating the former chloralkali manufacturing facility located along the Penobscot River in Orrington, Maine. Historic operations at that site resulted in a significant amount of contamination to the surrounding soils, groundwaters, and neighboring river. The first NOV was issued by DEP on March 19, 2025. The DEP has pursued the site's cleanup since 2008 and, under DEP oversight, progress has been achieved remediating the area. In 2008, the DEP issued an Order requiring remediation of all soil contaminated with mercury, chloropicrin, and other contaminants, removal of the industrial sewer, and establishment of financial assurance mechanisms. This was affirmed in the Board of Environmental Protection’s (BEP) 2010 Order. However, large areas of soil contaminated by mercury and chloropicrin above the site-specific standard established by order of the Board of Environmental Protection for the protection of public health, safety, and the environment remain on the site unremediated. The industrial sewer has yet to be removed, and Mallinckrodt has failed to establish the required financial assurance mechanism.
Mallinckrodt's response to the DEP's March 19, 2025 NOV was deemed insufficient by the DEP to satisfy the Orders' clear requirements. In accordance with Maine law and this Department's orders, the DEP expects that Mallinckrodt will immediately resume efforts to accomplish site remediation.
The Notice of Violation is available on the DEP Mallinckrodt webpage.
\| \|
For additional information, contact:
David R. Madore, Deputy Commissioner
david.madore@maine.gov
\| \| | | | |
| | | | |
| | | | |
| | | | |
| \| \| | | | |
| | | | | | # --- PRESS RELEASE ---
For Immediate Release | | |
Maine DEP Takes Further Action Against Mallinckrodt US LLC/Medtronic for Compliance Issues
AUGUSTA, October 22, 2025 — The Department of Environmental Protection (DEP) has issued a second Notice of Violation (NOV) to Mallinckrodt US LLC/Medtronic related to the lack of meaningful progress remediating the former chloralkali manufacturing facility located along the Penobscot River in Orrington, Maine. Historic operations at that site resulted in a significant amount of contamination to the surrounding soils, groundwaters, and neighboring river. The first NOV was issued by DEP on March 19, 2025. The DEP has pursued the site's cleanup since 2008 and, under DEP oversight, progress has been achieved remediating the area. In 2008, the DEP issued an Order requiring remediation of all soil contaminated with mercury, chloropicrin, and other contaminants, removal of the industrial sewer, and establishment of financial assurance mechanisms. This was affirmed in the Board of Environmental Protection’s (BEP) 2010 Order. However, large areas of soil contaminated by mercury and chloropicrin above the site-specific standard established by order of the Board of Environmental Protection for the protection of public health, safety, and the environment remain on the site unremediated. The industrial sewer has yet to be removed, and Mallinckrodt has failed to establish the required financial assurance mechanism.
Mallinckrodt's response to the DEP's March 19, 2025 NOV was deemed insufficient by the DEP to satisfy the Orders' clear requirements. In accordance with Maine law and this Department's orders, the DEP expects that Mallinckrodt will immediately resume efforts to accomplish site remediation.
The Notice of Violation is available on the DEP Mallinckrodt webpage.
| |
For additional information, contact:
David R. Madore, Deputy Commissioner
david.madore@maine.gov
| | | | | | | | | |
| # --- PRESS RELEASE ---
For Immediate Release | | | | | | | |
| | |
Maine DEP Takes Further Action Against Mallinckrodt US LLC/Medtronic for Compliance Issues
AUGUSTA, October 22, 2025 — The Department of Environmental Protection (DEP) has issued a second Notice of Violation (NOV) to Mallinckrodt US LLC/Medtronic related to the lack of meaningful progress remediating the former chloralkali manufacturing facility located along the Penobscot River in Orrington, Maine. Historic operations at that site resulted in a significant amount of contamination to the surrounding soils, groundwaters, and neighboring river. The first NOV was issued by DEP on March 19, 2025. The DEP has pursued the site's cleanup since 2008 and, under DEP oversight, progress has been achieved remediating the area. In 2008, the DEP issued an Order requiring remediation of all soil contaminated with mercury, chloropicrin, and other contaminants, removal of the industrial sewer, and establishment of financial assurance mechanisms. This was affirmed in the Board of Environmental Protection’s (BEP) 2010 Order. However, large areas of soil contaminated by mercury and chloropicrin above the site-specific standard established by order of the Board of Environmental Protection for the protection of public health, safety, and the environment remain on the site unremediated. The industrial sewer has yet to be removed, and Mallinckrodt has failed to establish the required financial assurance mechanism.
Mallinckrodt's response to the DEP's March 19, 2025 NOV was deemed insufficient by the DEP to satisfy the Orders' clear requirements. In accordance with Maine law and this Department's orders, the DEP expects that Mallinckrodt will immediately resume efforts to accomplish site remediation.
The Notice of Violation is available on the DEP Mallinckrodt webpage.
| |
For additional information, contact:
David R. Madore, Deputy Commissioner
david.madore@maine.gov
| | | | | | | | | |
| | | | | | | | |
| | | | | | | | |
| | | | | | | | |
| | | | | | | | | | |
| | | | | | | | |
| | Maine Department of Environmental Protection Manage Subscriber Preferences | Unsubscribe | Help | Contact Us STAY CONNECTED:
|
Named provisions
Related changes
Get daily alerts for ME DEP Environmental News
Daily digest delivered to your inbox.
Free. Unsubscribe anytime.
About this page
Every important government, regulator, and court update from around the world. One place. Real-time. Free. Our mission
Source document text, dates, docket IDs, and authority are extracted directly from ME DEP.
The summary, classification, recommended actions, deadlines, and penalty information are AI-generated from the original text and may contain errors. Always verify against the source document.
Classification
Who this affects
Taxonomy
Browse Categories
Get alerts for this source
We'll email you when ME DEP Environmental News publishes new changes.
Subscribed!
Optional. Filters your digest to exactly the updates that matter to you.