The petroleum cleanup program at the Presidio completes work that was begun by the Army. Petroleum-contaminated sites fall into several categories:

·        Petroleum Corrective Action Plan (CAP) Sites

·        Mini-CAP Tank Sites and Tank Removal Sites

·        Tanks Removals Requiring No Further Action

·        Follow-up Work on the Fuel Distribution System (FDS)

Corrective Action Plan (CAP) Sites

Corrective Action Plan (CAP) Sites are the most extensive because groundwater has been affected by released petroleum. In some cases, extensive soil contamination is present and both dissolved and product phase petroleum is present within the groundwater. There are five CAP sites at the Presidio:

·        Building 207/231 area near Doyle Drive. Cleanup work is scheduled to begin in the summer of 2008.

·        Building 1065 area in the Letterman District (this building has been torn down). The final phase of cleanup work occurred in October 2007.

·        Building 1349 Area (tank 1349 near the WWII Memorial). Cleanup work occurred in November 2008.

·        Building 637area. This Crissy Field cleanup site was completed in 1999.

·        Building 610 area (the former Commissary building at Crissy Field). The first phase of work was completed in the summer of 2006. The second and final phase will be complete by December 2008.

Mini-CAP Sites

Mini-CAP sites have soil contamination, sometimes above applicable cleanup levels, but do not have evidence of groundwater contamination. There are approximately 27 mini-caps sites at the Presidio in various stages of investigation, cleanup, and administrative closure.

Tank Removal Sites and Tanks Requiring No Further Action

There are no remaining known Army underground tanks in the Presidio. Hundreds of tanks have been removed and are in the administrative closure process. Additional “No Further Action Sites” require regulatory agency approval to confirm that there is no need for a cleanup.

Fuel Distribution System

The Army used a 5-mile long network of underground pipelines to transport petroleum products around the Presidio. These pipelines, collectively called the Fuel Distribution System (FDS), were decommissioned by the Army. The Trust is following up on various aspects of the Army’s cleanup of the FDS. About 1/3 of the pipelines have been recommended for administrative closure. The remaining portions of pipeline are in various stages of testing, cleanup, or closure.