Environmental Impact Statement (EIS) Database

EIS Details

EIS Title

Tennessee Gas Pipeline Company, LLC et al. re the Mississippi Crossing Project and the South System Expansion 4 Project

EIS Number

20260001

Unique Identification Number

Document Type

Draft

Federal Register Date

2026-02-06 00:00:00.0

EIS Comment Due/ Review Period Date

2026-03-23 00:00:00.0

Amended Notice Date

Amended Notice

Supplemental Information

Issuance of Notice of Intent to Prepare an EIS:

2025-09-05 00:00:00.0

EPA Comment Letter Date

2026-03-20 00:00:00.0

State or Territory

MS - AL

Lead Agency

Federal Energy Regulatory Commission

Contact Name

Office of External Affairs

Contact Phone

866-208-3372

Rating (if Draft EIS)

As of October 2018, EPA discontinued the use of ratings for Draft EISs.

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EIS Document(s):

MSX-SSE4-DEIS_Part-1_Draft-EIS.pdf (279 pp, 5690.0712890625 K)

MSX-SSE4-DEIS_Part-2_Appendices_A-D.pdf (292 pp, 79373.751953125 K)

MSX-SSE4-DEIS_Part-3_Appendices_E-I.pdf (500 pp, 39557.333984375 K)

MSX-SSE4-DEIS_Part-4_Appendices_I-N.pdf (48 pp, 7522.67578125 K)

Comment Letter(s):

20260001 EPA Comments on MSX and SSEE DEIS_CP25-514517 (F).doc_ (002).pdf (2 pp, 241.1435546875 K)