Installation Restoration Program Phase 2 - Confirmation/Quantification Stage 1 for Holloman AFB, New Mexico, BX Service Station Gasoline Leak Investigation

摘要

Nine sites were initially scheduled for investigation under the Holloman AFB Phase II, Stage 1 Installation Restoration Program. One site, the BX Service Station, was investigated separately under an accelerated program because of the potential immediate safety hazards associated with the condition. In January 1981, it was discovered that an estimated 100,000 to 150,000 gallons of MOGAS had leaked from corroded transfer lines at the BX Service Station. In September 1984, Dames & Moore installed 17 monitor wells and 12 test holes in the suspected area of the gasoline plume. Gasoline thickness contours were mapped. The plume averages 1 to 1.5 feet in thickness with a maximum of 2.3 feet and covers an area of approximately 550 by 300 feet. The volume of gasoline present is estimated to be 71,000 gallons. Two pumping test cells were constructed, and an average permeability of .0000558 cm/sec was determined. Several alternatives for cleanup of the gas were investigated. It is recommended that recovery of the plume by pumping existing wells begin as soon as possible. An approach for determining optimum pumping rates and located is given.