Sempra Pipelines & Storage projects are designed to meet the highest industry standards and comply with all government regulations. These are some of the environmental considerations specific to the Liberty Gas Storage Expansion:

• The Hackberry salt dome has been used for petroleum storage for more than 30 years.
• The proposed compressor station and storage facilities will be located on Liberty Gas Storage’s existing 160-acre site.
• The proposed pipelines are routed to minimize impact on the region and environment. Liberty Gas Storage will work with affected stakeholders to further reduce project impact.
• Liberty Gas Storage will seek input from environmental and local stakeholders to ensure the project is compatible with local wildlife and recreational activities.

Wetlands

• Liberty Gas Storage has been designed to minimize wetland impact and will comply with federal and state wetland permit conditions.
• The natural gas pipeline has been routed across open waters of Black Lake to minimize wetland impact. Unavoidable wetland impact will be mitigated by working with the Coastal Management Division of the Louisiana Department of Natural Resources and the U.S. Army Corps of Engineers.

Water resources

• Liberty Gas Storage plans to use groundwater to create the new storage cavern and is working with state agencies to ensure that potable groundwater resources will not be adversely affected.
• The natural gas pipeline crossing of Black Lake will be constructed to minimize environmental impact.

Biological resources

• Liberty Gas Storage is consulting with federal and state agencies regarding threatened and endangered species in the project area.
• Information to date indicates that no threatened or endangered species will be adversely affected by the expansion project.

Air quality

• Compressor station air emissions will be reduced through the use of emissions control equipment.
• The project will comply with Louisiana Department of Environmental Quality air permit requirements.