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SWG-2015-00114 - Rio Grande LNG, LLC and Rio Bravo Pipeline, LLC - wetlands and waters of the United States - Cameron, Jim Wells, Kleberg, and Willacy Counties, Texas

Published Oct. 18, 2018
Expiration date: 11/19/2018

Full Public Notice          Project Plans (Pipeline)          Project Plans (Terminal)

PROJECT DESCRIPTION:  The applicant proposes to construct, install, operate, and maintain structures and equipment necessary for liquefaction and export of natural gas, including construction of a gas supply pipeline with compressor stations and attendant features.  Terminal features include liquefaction trains, LNG storage tanks, operating facilities, LNG truck loading facilities, a marine slip with LNG vessel berths, a vessel turning basin, and a materials off-loading facility (MOF) adjacent to the Brownsville Ship Channel.  For construction of the proposed terminal, about 623,000 cubic yards of material would be excavated along the shoreline and within the Brownsville Ship Channel by land-based equipment for construction of the berthing areas, turning basin, and MOF.  This material would be directly placed at the terminal site for fill.  An additional 39,000 cubic yards of material would be dredged from the MOF using a hydraulic dredge before construction of the terminal and used for additional fill at the terminal or pumped via temporary pipeline to the Port of Brownsville dredged material placement area (PA) No. 4B.  About 6.5 million cubic yards of material would be dredged from the berths and turning basin using water-based equipment.  Maintenance dredging would remove up to 500,000 cubic yards of material from the berthing area and turning basin every 2 to 4 years.  Dredged material would be placed in Port of Brownsville PA No. 4A, No. 4B,  No. 5A, No. 5B, or a combination of those PAs.  .

 

Construction and operation of the proposed Rio Grande LNG Terminal would affect 750.4 acres of land, including 208.9 acres of shrub/forest land, 191.5 acres of open land, 162.5 acres of non-forested wetlands, 106.1 acres of open water, and 81.4 acres of barren land, all of which would be permanently converted to industrial/commercial land.  Construction and maintenance of the gas supply pipeline would result in no permanent loss of waters of the U.S.  A total of 334.7 acres of wetlands would be within the construction footprint of the terminal and pipeline facilities.  Impacts would include 9.6 acres of palustrine forested (PFO) wetlands, 23.0 acres of palustrine scrub-shrub (PSS) and estuarine scrub-shrub (ESS) wetlands, and 248.0 acres of palustrine emergent (PEM) and estuarine emergent marsh (EEM) wetlands.  In addition, the project would impact 54.0 acres of mudflats (estuarine unconsolidated shore [EUS]) during construction.  A total of 287.2 acres would be within the operational footprint of the project, of which 182.4 would be permanently converted to industrial/commercial land or open water at the LNG terminal site (including 19.8 acres of ESS wetland, 114.9 acres of EEM wetlands, and 47.7 acres of mudflats) and 104.8 would be maintained as PEM/PSS within the pipeline right-of-way (ROW), including 7.4 acres of PFO wetlands, 3.2 acres of PSS wetlands, and 94.2 acres of emergent (PEM and EEM) wetlands and mudflats.