San Clemente Island

The proposed action in the P‐704F MILCON involved the construction of a new fuel storage facility. The relocation of the fuel storage facility was needed to improve fuel receipt, storage and delivery capabilities at NALF SCI. The existing underground jet fuel (JP‐5) storage tanks at the NALF SCI Fuel Farm still need to be addressed.  Three USTs are at risk of failure due to age (50‐70 years) and their proximity to the ocean where continued erosion is undermining the adjacent cliff wall. This scope of work includes regulatory closure of these three existing JP‐5 tanks for the SCI fuel farm (USTs 125, 126 and 127), piping and aging infrastructure and soil stabilization. The concrete UST has an operational capacity of 210,000 gallons. The two steel USTs have an operational capacity of 25,000 gallons each. The National Environmental Protection Act (NEPA) requirements for actions to close the USTs in place and demolish associated piping and appurtenances for the old fuel facility are covered under the Final Environmental Assessment published in November 2012.

Cellular concrete was used to backfill the tanks, due to the ease of sourcing material to the Island. Cell-Crete barged over material and equipment to the island and completed the backfill operation in 4 days, the crew also had the pleasure of staying in the barracks and enjoy the company of our service men while on the base.  

The tanks were filled using class II cellular concrete material, the material also complies with the strict environmental standards.