Lake Maurepas CCS

Air Products’ Proposed Carbon Dioxide Sequestration Facility.
Exploratory Map
Date:
June 2025
Community Served:
St John the Baptist Livingston Tangipahoa parishes
Collaborators:
Earthjustice RISE St James

Drag the bar to explore this map over time.

Issue

CCS Waste Storage Scheme Threatens Treasured Waterbody

Air Products is pursuing state and federal permits to allow construction of a gigantic carbon sequestration facility within Lake Maurepas, an vital estuary, wildlife sanctuary and recreational boating paradise in southeastern Louisiana. The proposed pipeline and well facility sprawls like a spiderweb over the entirety of the lake bed, disturbing underwater sediment into the water column, and creating a visual blight and hazard upon the lake’s surface. Air Products’ proposal would operate a continuous high-pressure carbon dioxide injection one mile deep below the lake bed for 25 years, which comes with a high-degree of operational risks of leaks due to carbon dioxide’s high degree of molecular reactivity. In addition to those risks, the ecologic risks of long term storage in perpetuity cannot be guaranteed, and would likely fail due to geologic instability and seismic slip faults, and the corrosive effect of carbon dioxide upon pipeline casings, risking acidification of the entire estuary.

Exploratory Map

See the full map to explore the entire scope of the project.

Solution

Create visually arresting graphic to drive public engagement

Advocates needed a map to demonstrate the scale of negative impacts upon the lake, to get the word out and generate public interest, which in turn would compel public agencies, like the Army Corps of Engineers, to schedule public hearings for their required permits. Agency permit hearings are discretionary, and in this case it was absolutely necessary to counteract the company’s deceitful narrative of a ‘perfectly safe’ pipeline with negligible impacts. The Lake Maurepas CO2 injection site is only one component of the larger Air Products proposal to build a massive new ammonia plant, which comes with different risks, trying to convey all of this in one map was not possible, so I created a different set of maps for the CO2 pipeline, and the ammonia plant, in order to better show the entire scope of the proposal, and highlight other problematic aspects of their plan.

Impact

Groundswell of Opposition Demands Permit Denial at Public Hearing

Using the maps and graphics, organizers created fact sheets and posters to spread the word online and in person. This public media campaign generated enough attention to force the Army Corps to schedule a public hearing on the wetland permits. The outreach work continued to build momentum, evidenced by a packed town hall event on the scheme organized by local elected public officials, and at the public hearing held by the Army Corps in LaPlace, St John the Baptist parish. This permit battle is still in the early stages however, as the company has not backed down from their application, and the state regulatory agencies stay quiet. The Army Corps holds significant power in this situation, to require the applicant to develop a full Environmental Impact Study (EIS), which would not be able to ignore the harm caused by this proposal.

“Louisiana is a place where expert help is often needed to translate what little public information on pollution proposals is available into maps and local context that everyday residents can understand. Justin's work has been critical and timely in supporting many local Louisiana groups in their advocacy to protect their air and water.”

Scott Eustis
Community Science Director
,
Healthy Gulf