NORTH BURN PADS

 

SITE DESCRIPTION

The North Burn Pads consists of Pads 1-N and 2-N. Each pad measures about 20 feet by 50 feet and was operational from 1968 to 1972. Lead azide and gun powder were burned here. A 275-gallon diesel fuel station was located at the base of Pad 2-N. The station had an above-ground tank used to refuel equipment operating in the area.

The PA/SI was completed in 1991, the RI was completed in May 1996 and found metals and small amounts of explosives. 

Contaminated soils were removed (2990cy) in 1998 as part of the IRA and placed in the appropriate areas at the Inert Disposal Area (IAAP-020). Groundwater monitoring began in 1994 and ended in 2001.

The FUSRAP PA indentified this area as requiring addtional investigation. In August 2004, FUSRAP conducted a screening survey of this site to determine if radiological contaminates from AEC activities are present in soil. Preliminary assessments of all screening results indicate no radiological contamination present at this area.

This site is considered Response Complete and no further IRP action is required for soils as documented in the Phase 1 Remedial Action Report.  This site will be included in the OU3 Groundwater ROD.

A revised draft OU3 RI/FS was submitted to EPA for review in April 2008 to address groundwater; the recommendation for groundwater is either “No Further Action” or “institutional controls, monitored natural attenuation, and long term monitoring” depending on the selected risk level.