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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
WhereLocation 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.
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 noticeDTSC / 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 DeterminationDTSC · 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 DeterminationDTSC · 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
WhereLocation 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.
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 noticeDTSC / 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 DeterminationDTSC · 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 DeterminationDTSC · 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.