BUILDING 600-86 SEPTIC SYSTEM

 

SITE DESCRIPTION

The IRP site consists of the contamination from past activities. Any contamination from current and future activities will be addressed with non-ER,A funding.

Building 600-86 is located in the north-central portion of the installation. This building has served in several roles since its construction in 1941. It was an analytical laboratory from 1941 to 1953. In 1985, two rooms in the building are used to store RCRA hazardous wastes. Room A is used to store spent solvents with a permitted capacity of 2640 gallons. Room B is used to store waste liquids containing cyanide salts. Both rooms have concrete curbing around the perimeter. Small amounts of solvents that may be contaminated with explosives are accumulated in Room C, then filtered through a carbon filter column before being taken off-site.

The function of the laboratory was to perform drinking water and wastewater analyses, as well as analysis of primer mixes containing lead azide in quantities of 10 to 20 milligrams. The waste from the primer tests was deactivated with ceric ammonium nitrate and the resultant waste solution was disposed of in the Explosive Disposal Area (IAAP-012).

The laboratory building was constructed with its own septic tank and drain. Sometime after 1983, sludge was removed from the septic tank and the tank was filled with sand.

The PA/SI was completed in 1991, the RI was completed in May 1996; sampling found metals below action levels in soil and groundwater.

This site is considered Response Complete and requires no further action under the IRP.  USACHPPM Phase II Complete.

This site may need to be reopened for additional sampling to support the no further action determination.

A revised draft OU3 RI/FS was submitted to EPA for review in April 2008 to address groundwater; the recommendation for groundwater is No Further Action.