Item No. 8c supp
Meeting Date: Sept. 22, 2026

Terminal 25 South Cleanup

Authorization for Removal Design/Removal Action Order with EPA
September 22, 2026
1

Project Site: T25 South
• Unique, very high ecological value in
saltwater transition zone
• Three related projects, one
mobilization:
- Upland cleanup required by EPA
- Sediments cleanup required as
East Waterway "Early Action"
pursuant to EPA interim record of
decision (IROD)
- 10-acre habitat restoration
2

Soil & Sediment Cleanup
• Cleanup must satisfy EPA
• In-water cleanup treated as East
Waterway "early action," must meet
IROD
• Upland cleanup to remove historical PCB
hotspot discovered in 2019
• Estimated cost for cleanup (full removal)
- Sediments Cleanup:$61 M
- Upland Cleanup: $71 M
• Habitat design and construction will be
integrated with the cleanup
3

Key Schedule Milestones
Field Investigation/Data Approval
EPA EE/CA Approval/Action Memo
GC/CM Solicitation
EPA Design and Action Order
30% Design to EPA
GC/CM Contractor Inclusion
60% Design to EPA
90% Design to EPA
100% Design & Permitting
Construction

Q1 2025 (complete)
Q3 2026 (complete)
Q3 2026 (complete)
Q3 2026 (This Item)
Q1 2027
Q1 2027
Q3 2027
Q1 2028
Q3 2028
Q1 2029 - Q2 2031
4

QUESTIONS?

1936

2026

2031

5

Habitat Restoration

Restores 10 acres to fully functioning riparian, marsh, intertidal, and subtidal habitat:
• Install substrates, vegetation, anchored wood, cobble, and intertidal channels
• Green stormwater infrastructure to protect site from runoff from adjacent NWSA site
• Public access not permitted, but site contributes to viewshed and popular fishing area
6