Project record

Corpus Christi offshore disposal-site expansion

Participation
Requires review
Participation checked

Expanded site boundaries effective 28 October 2026

Participation source

EPA expanded the Corpus Christi Ship Channel and New Work offshore disposal sites, effective 28 October 2026. Their September management plan links placement to release zones, bathymetric monitoring and mound-control actions.

Corpus Christi conceptual seabed profiles showing Ship Channel 10-foot and New Work 15-foot mound-action thresholds above the existing bed

IMWO original Corpus Christi mound-control diagram based on the September 2026 management plan

Location

United States / Americas

Segment

Dredging

Phase

Approval / Confirmed

Last checked

29 October 2026

Coverage

Related sectors

Dredging is the primary work classification. Related sectors connect this record to adjacent marine delivery and market coverage.

Subject index

Related subjects

These subject pages bring together related projects, technical articles, reports, and evidence methods.

Project anatomy

Contract scope and delivery roles

Client / authority
U.S. Environmental Protection Agency, Region 6, with U.S. Army Corps of Engineers, Galveston District
Delivery parties
Project-specific disposal contractors are identified in the applicable permit or federal contract; the site-designation rule names none.
Contract route
EPA establishes the disposal-site geometry through rulemaking. USACE issues project-specific ocean-disposal permits or federal authorisations subject to EPA review and concurrence; the designation establishes no open procurement.
Execution window
The final rule was published on 28 September and became effective on 28 October 2026. The September management plan recommends a post-disposal bathymetric survey within 45 days of project completion.
Works package
Expand the Ship Channel disposal site from 0.61 to 1.05 square nautical miles and New Work from 1.39 to 5.57 square nautical miles. Individual dredging and disposal scopes depend on their project authorisations.
Marine interfaces
A moving release envelope extends 100 metres from the vessel perimeter during dumping. Vessel width, travel and discharge duration affect the route that fits inside the designated site and authorised release zone.
Commercial evidence boundary
An estimate based on a fixed sailing endpoint needs revision when the working disposal position moves. Survey mobilisation, post-disposal bathymetry and reporting also occupy resources after the final load.

Contract and delivery chain

Work packages and named roles

Published scope, named parties and supporting evidence for each workstream.

Scope

Offshore disposal-site boundaries and areas

Named party
US EPA Region 6
Evidence status
Confirmed
Source position
The 28 September final rule expands the Ship Channel site to 1.05 square nautical miles and New Work to 5.57 square nautical miles, effective 28 October 2026. Source
Management

Release-zone and mound-control planning

Named party
US EPA Region 6 and USACE Galveston District
Evidence status
Confirmed
Source position
The September plan includes placement, tracking, bathymetric surveys and mound-action thresholds, with project conditions incorporated through authorisations case by case. Source

Evidence gap

What remains unverified

Outstanding evidence

  • Project-specific sediment suitability and operative disposal authorisation
  • Surveyed bed and proposed load distribution within the release zone
  • Mound growth, sailing cycle and completed follow-up survey

Related records 2

Reporting status

Project phase
Approval
Evidence confidence
Confirmed
Last checked
29 October 2026
Cited sources
4

Sources and related records

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Source collections

Project sources 4