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Vallejo / Environment

ApprovedAs reported Sep 11, 2026

Mare Island Site 13 cleanup plan approved; work completion unconfirmed

Approval recorded by DTSC; see the dated update below.

Source: DTSC, Signed Site 13 Notice of Determination · checked Oct 9, 2026 · Coverage updated Oct 9, 2026

Location not yet established

DTSC approved a cleanup plan on September 9, 2026 for the Paint Waste Area, also called Unexploded Ordnance Site 13, west of Azuar Drive and G Street on Mare Island in Vallejo. Its notice, posted September 28, describes excavation and offsite disposal of paint waste and lead-contaminated soil, screening for munitions, and wetland restoration. Restrictions on sensitive uses and ground penetration would address potential munitions below detection limits. The approval concerns this cleanup plan; it does not establish that cleanup has begun or finished, that the site is safe for unrestricted use, or that redevelopment is approved. A construction timetable remains unconfirmed.

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How we know (3 sources)

Dated source evidence; the project may have changed since then. An approval does not establish construction or an opening.

Summary

State posting September 28 identifies Site 13 west of Azuar Drive/G Street, Vallejo, and the September 9 cleanup-plan approval.

Site 13 Record of Decision/Final Remedial Action Plan notice

DTSC / CEQAnet · Summary; Location; Approved On

Evidence dated: Sep 28, 2026 · Source checked: Oct 9, 2026

Original source manually reviewed. Date and scope are attributed; this claim does not establish a completed project.

Summary

The approved remedy includes removal/disposal of contaminated soil, munitions screening, wetland restoration, and continuing restrictions addressing potential undetected munitions.

Signed Site 13 Notice of Determination

DTSC · PDF pp. 1–2, visually inspected; decision Sept 9, signature Sept 11

Evidence dated: Sep 11, 2026 · Source checked: Oct 9, 2026

Original source manually reviewed. Date and scope are attributed; this claim does not establish a completed project.

Development status

DTSC expressly records September 9, 2026 approval of the Site 13 cleanup plan. This status is limited to the cleanup project.

Signed Site 13 Notice of Determination

DTSC · PDF p. 1: agency approval sentence

Evidence dated: Sep 11, 2026 · Source checked: Oct 9, 2026

Original source manually reviewed. Date and scope are attributed; this claim does not establish a completed project.

Vallejo / Environment

ApprovedAs reported Sep 11, 2026

Mare Island Site 13 cleanup plan approved; work completion unconfirmed

Approval recorded by DTSC; see the dated update below.

Source: DTSC, Signed Site 13 Notice of Determination · checked Oct 9, 2026 · Coverage updated Oct 9, 2026

Location not yet established

DTSC approved a cleanup plan on September 9, 2026 for the Paint Waste Area, also called Unexploded Ordnance Site 13, west of Azuar Drive and G Street on Mare Island in Vallejo. Its notice, posted September 28, describes excavation and offsite disposal of paint waste and lead-contaminated soil, screening for munitions, and wetland restoration. Restrictions on sensitive uses and ground penetration would address potential munitions below detection limits. The approval concerns this cleanup plan; it does not establish that cleanup has begun or finished, that the site is safe for unrestricted use, or that redevelopment is approved. A construction timetable remains unconfirmed.

Share this story

Select story link

How we know (3 sources)

Dated source evidence; the project may have changed since then. An approval does not establish construction or an opening.

Summary

State posting September 28 identifies Site 13 west of Azuar Drive/G Street, Vallejo, and the September 9 cleanup-plan approval.

Site 13 Record of Decision/Final Remedial Action Plan notice

DTSC / CEQAnet · Summary; Location; Approved On

Evidence dated: Sep 28, 2026 · Source checked: Oct 9, 2026

Original source manually reviewed. Date and scope are attributed; this claim does not establish a completed project.

Summary

The approved remedy includes removal/disposal of contaminated soil, munitions screening, wetland restoration, and continuing restrictions addressing potential undetected munitions.

Signed Site 13 Notice of Determination

DTSC · PDF pp. 1–2, visually inspected; decision Sept 9, signature Sept 11

Evidence dated: Sep 11, 2026 · Source checked: Oct 9, 2026

Original source manually reviewed. Date and scope are attributed; this claim does not establish a completed project.

Development status

DTSC expressly records September 9, 2026 approval of the Site 13 cleanup plan. This status is limited to the cleanup project.

Signed Site 13 Notice of Determination

DTSC · PDF p. 1: agency approval sentence

Evidence dated: Sep 11, 2026 · Source checked: Oct 9, 2026

Original source manually reviewed. Date and scope are attributed; this claim does not establish a completed project.