The Engineering Propulsion Laboratory facilities in PU2 are the suspected source of contamination with solvents, liquid nitrogen, kerosene, acids, and diesel fuel being investigated as potential contaminants. Operable Unit 5 - Brush Creek Groundwater Operable Unit 5 consists of the groundwater beneath Brush Creek. There are two contaminant plumes under investigation, one plume lies under the West Fork of Brush Creek and the other is under the East Form. OU5 covers a broad area underlying the drainage basins of these forks. Contamination occurs under Plant PJKS and extends eastward to Lockheed Martin property.
Suspected contamination includes diesel fuel, kerosene, solvents, oxidizers, PCBs, and acids.
Operable Unit 6 - Ordnance Testing Laboratory Operable Unit 6 consists of two sites under investigation. One is a 30' x 100' open area used for testing small explosive charges and for disposal of small quantities of explosives by detonation or burning. A second site involves a fuel oil lead at a former underground storage tank. Suspected contamination includes residues from explosives and petroleum hydrocarbons in the soil and subsoil. To Top of Page 4.