update CITCAT Meeting Announcement:

Meetings Have Been Postponed Until Further Notice. For more information, contact Jennifer Lamons at 573-751-3907 or by email at Jennifer.Lamons@dnr.mo.gov.

  • When: TBA
  • Time: TBA
  • Place: TBA

If you plan to attend an in-person meeting, please do not park in front of the overhead bay doors in front of the fire station, or at the fuel pumps or in the parking spots outside the main station door. Park in marked parking spots on the north side of the building or behind the building. Accessible parking is provided outside the main station door and will be marked accessible.

New The department is committed to keeping the community and Missouri citizens informed on progress related to cleanup progress at the Camdenton sites. See the CITCAT status table for monthly updates.

Brief Overview

A manufacturing facility at 221 Sunset Drive in Camdenton produced aluminum and copper heat transfer units between 1967 and 2012 under a succession of owners/operators including Dawson Metal Products, Sundstrand Tubular Products, Inc. (now UTC), and Modine Heat Transfer Inc. (Modine). During operation of the facility, Dawson and Sundstrand used trichloroethene (TCE) as a degreasing agent. Modine discontinued the use of TCE at the facility in 1990. Releases of TCE to the environment at the Sunset Drive facility, a nearby temporary facility, and a wastewater lagoon in Camdenton have prompted a number of investigation and cleanup activities designed to protect human health and the environment. TCE was detected in the Mulberry Well, one of Camdenton’s public drinking water wells, and the city took the well offline in 1999.The source(s) of TCE contamination to the well has not been definitively determined, but may include releases from the Sunset Drive facility and City Lagoon #3. 

221 Sunset Drive Facility–Modine Manufacturing Co. - The department began investigations at the facility in 1992 following a release of 4,500 gallons of TCE. Several rounds of investigation and soil removal have been conducted by Modine under department oversight. Modine has installed and regularly sampled a network of monitoring wells at and near the facility. During a recent investigation of vapor intrusion, Modine’s contractor documented TCE in vapors beneath the facility and in indoor air, as well as inside two nearby homes. Modine has installed mitigation systems in the homes, removing exposure to the TCE. Future planned work includes additional vapor intrusion assessment at residences, and soil sampling beneath the facility to further define TCE contamination and help select a remedy. Modine conducted soil gas sampling under the manufacturing building in December 2017 and soil sampling under the manufacturing building in June 2018. Additional soil sampling under the manufacturing building is planned for fall 2018 to further define the TCE contamination and help select a remedy.

Dawson Metal Products Camdenton Facility #2 - In 2017, the department became aware of allegations by former Dawson employees that TCE waste was disposed of at 1225 US Highway 54 where the company’s manufacturing operations temporarily relocated in 1972 during reconstruction at the main Sunset Drive facility following a fire. The department conducted an investigation at the facility in 2017 and identified TCE in soil, subslab vapor and indoor air. UTC has completed design work and installation of a vapor mitigation system beneath the facility building. Additional site characterization work is being planned to further define the extent of TCE contamination from past disposal practices.

Mulberry Well and City Lagoon #3 (formerly known as Hulett Lagoon) - This site is the location of one of Camdenton’s former wastewater treatment lagoons located 800 feet northeast of the Sunset Drive facility. In addition to domestic sewage, the lagoon received wastewater containing TCE and other contaminants from the Sunset Drive facility over the course of several decades.In 1989, the city closed the lagoon and transported the sludge to a permitted disposal site at the Camdenton Municipal Airport. In 1997, the department documented TCE in the Mulberry Well, which is near the lagoon. As a result, the department initiated a Superfund investigation at the lagoon in 1998. In that investigation, the department documented residual TCE contamination remaining in the lagoon area. The Mulberry Well was taken offline by the city in 1999. The current focus at the lagoon site is assessment of the vapor intrusion pathway. Sundstrand/UTC conducted soil gas sampling around the lagoon in February, May and August 2018.

Camdenton Treatment Plant Lagoon (formerly known as CP White Lagoon) - This site is the location of one of Camdenton’s former wastewater treatment lagoons located 1.3 miles southwest of the Sunset Drive facility. This lagoon is the current location of Camdenton’s wastewater treatment plant. Following up on citizen concerns expressed during a CITCAT meeting, the department identified a period of time between 1987 and 1989, following the decommissioning of City Lagoon #3, when wastewater from Sundstrand’s Sunset Drive facility was discharged to this lagoon. The city decommissioned the lagoon in June 1989 when the current treatment plant became operational. The department is currently conducting an investigation of potential TCE impacts in the Camdenton Treatment Plant Lagoon area.

Camdenton Sludge Disposal Area - Following removal from City Lagoon #3 in 1989, the city applied the sludge to the land surface in an open field at the Camdenton Airport property. The department investigated the Camdenton Sludge Disposal Area site in 1999. Samples collected by the department did not detect TCE in sludge material, surrounding soil or drinking water. In 2017, the department conducted additional follow-up drinking water well sampling in the airport area. The findings confirmed that there have been no impacts to groundwater, and no further investigation is planned for this site at this time.

We Need Your Help

The Missouri Department of Natural Resources has received valuable information from the public; including former employees. Let us know if you have additional information that can help the department protect human health. You may provide your comments and information online. Also, if you have a private drinking water well and live within city limits, please notify us. All of this information will assist the department with our investigations.




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