air force plant pjks

12275 SOUTH HIGHWAY 75

Air Force Plant PJKS is owned and operated by Lockheed Martin Astronautics Operation. The plant is located 25 miles southwest of Denver, near Waterton Canyon in the South Platte River Basin. PJKS consists of 464 acres, surrounded by another 4,700 acres of Lockheed Martin land. Company operations at PJKS include testing the Titan rockets, as well as designing, developing, testing and manufacturing a variety of advanced technical systems for space and defense. In 1989 the U.S. Environmental Protection Agency (EPA) placed the PJKS site on its National Priority List (NPL). The Air Force is responsible for the cleanup at PJKS. CDPHE is the lead regulator of the cleanup, with EPA oversight. Many studies were done during the 1990s to determine the nature and extent of site contamination. The Air Force submitted a Supplemental Remedial Investigation report to CDPHE and EPA in 1999. The report detailed investigations into the nature and extent of soil and groundwater contamination across PJKS. Investigations identified 53 contaminated soil sites and three groundwater plumes at PJKS. The groundwater plumes are identified as East and West Fork Brush Creek and Lariat Gulch. Today, all 53 soil sites have been addressed. The groundwater at the PJKS site is being treated for contaminants. The groundwater leaving PJKS is being collected by Lockheed Martin at the Lockheed Martin property boundary and treated for TCE and NDMA.

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