Last updated Oct. 6, 2017

What We Know

The Camdenton Sludge Disposal Area site, located at 20 Airport Drive, is an open field where sludge from Hulett Lagoon, the city of Camdenton's former wastewater sewage lagoon, was disposed of as part of closure. The Hulett Lagoon operated from 1961 to 1989 and received industrial wastewater containing tricholoroethylene (TCE) from the 221 Sunset Drive manufacturing facility. In 1989, sludge from the closure of Hulett Lagoon in 1989 was land applied in a field north of Forbes Road at the end of the runway at the Camdenton Memorial Airport. Based on the TCE contamination documented at the Hulett Lagoon site, there was concern that sludge disposed of near the airport could pose a risk to nearby residents if TCE was released into the groundwater.

A combined Preliminary Assessment/Site Inspection investigation was completed by the department at the site in 1999. TCE was not detected in samples from the sludge material and surrounding soil. Three nearby private drinking water wells were sampled by the department and no TCE was detected in these wells. Residents also submitted well water samples to private laboratories which detected TCE, but the department was unable to replicate these results after collecting multiple samples from the same area wells.

Recently the department received new information from a citizen in Camdenton that Hulett Lagoon sludge material may have been applied on two additional private properties. After interviewing several individuals and examining city of Camdenton records, information indicates that the sludge applied at the two private properties came from the city’s wastewater treatment facility on HaHa Tonka Road.

Path Forward

Additional citizens have voiced concerns regarding the potential for contamination of private wells near the airport Sludge Disposal Area site that were not sampled during the 1999 investigation. The department conducted a Site Reassessment sampling event in October 2017 that included collection of groundwater samples, from public and private wells within one half mile of the Sludge Disposal Area site. Samples will be analyzed for volatile organic compounds, including TCE, and metals. Since sampling results from the 1999 investigation did not document TCE in sludge material, soil or private well water, the department believes the potential for groundwater contamination in the area is low.  

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