MRP Site UXO7 is an artificial lake located in the southwestern portion of the installation, approximately 300 feet north of Shrike Road. The lake has historically covered roughly 3 acres, but is known to fluctuate seasonally in its extent. Lower Lake is fed by tributaries from the north, east, and west, and is retained by an earthen dam that supports an access road at the western end. Water is discharged from the lake through a vertical drain that passes below the embankment to a drainage area downstream from the lake. A secondary concrete-lined spillway is located on the south side of the embankment and access road. In 1958, the lake was identified as a potential disposal site for MECs. Lower Lake is currently used to store water on the installation for fish and wildlife enhancement, and for wildfire protection to fight fires inside Det. Fallbrook. Historically, the lake was also used for recreational boating and catch/release fishing, both discontinued in 2004. A Remedial Investigation is scheduled for 2020 to delineate the nature and extent of munitions waste.
|Location (see map)||Southwestern portion of base|
|Contamination Source||Possible munitions disposal|
|Potential Waste Types||Munitions, explosives, metals, perchlorates|
|Status||Remedial Investigation pending|
|Est. Response Complete||To be determined|