EPA ID# MOD073029936

MoDNR Contact: Sushmita Sharma, 816-251-0703 or 800-361-4827
Facility Contact: Robert Meenen, 660-827-3460
Last Updated: April 1, 2016

  • Former Company Name: None.
  • Type of Facility: Hazardous Waste Disposal – closed.
  • Wastes Handled: Solvents.
  • Treatment and Disposal Methods: Land disposal.
  • Location of hard copies of hazardous waste permit application, Part I Permit, modification requests, reports, etc. and supporting documents:

Current Activities

Missouri Pressed Metals is conducting corrective action activities and performing long-term monitoring and maintenance of a closed land disposal unit under a hazardous waste permit. The status of Missouri Pressed Metals’s post-closure and corrective action activities is described below. The public can review and copy paper copies of all permits, reports and supporting documents at the agency locations above.

 

The Missouri Pressed Metals site, which is owned by RNB Real Estate LLC, is located on about 8.4 acres at 1200 E. Boonville Road in Sedalia. Before 1973, the land was undeveloped. In 1973, Missouri Pressed Metals constructed two buildings on the site and began operating a small specialty manufacturing facility. Manufacturing and administrative operations are performed in the main building. This building is approximately 40,000 square feet and consists of an initial structure and several additions. The smaller building, which is approximately 1,200 square feet, is used for storage.

Missouri Pressed Metals produces bushings and bearings of sintered metal used in automobile parts, fractional horsepower electric motors, lawn and garden equipment, air conditioners and fans. Raw materials, including powdered bronze and iron, are mixed in the powder room, then molded to shape in the molding production area and sintered in the oven room. After sintering, the parts are taken to the tumbling room where they are tumbled with dry wax to remove burrs and fins and added wax for sizing. After sizing, the parts go to the shipping area where they are oil impregnated and a centrifuge is used to remove excess surface oil. The degreasing operation is located along the southern wall of the shipping room. The parts are then boxed for shipping.

Missouri Pressed Metals used 1,1,1-trichloroethane (TCA) in the vapor degreasing operation until 1995. Before 1990, the raw 1,1,1-TCA was stored in bulk storage tanks located in the tumbling and shipping rooms. Between 1990 and 1995, the raw 1,1,1-TCA was stored in 55-gallon drums located in the storage building. Spent 1,1,1-TCA, which is a listed hazardous waste, was produced as part of the vapor degreasing operations. The spent 1,1,1-TCA was pumped through a sump pump into a 55-gallon temporary storage container located next to the vapor degreaser. The spent 1,1,1-TCA and waste oil were then placed in a temporary hazardous waste storage area in the storage building, located next to the southeast end of the main production building.

In December 1985, the department conducted a compliance evaluation inspection at the site. The department issued a Notice of Violation to Missouri Pressed Metals for failure to register as a hazardous waste generator and open containers of hazardous waste, among other violations. In January 1986, the department conducted a second compliance evaluation inspection at the site. The department noted that fan vents along the north side of the building vented solvent fumes directly onto the ground. Missouri Pressed Metals representatives also revealed that spent 1,1,1-TCA/waste oil was used as a herbicide along the east and north sides of the main building for weed control between 1973 and 1985. After 1985, Missouri Pressed Metals shipped the waste off-site for disposal. In March 1986, the department issued an Order to Abate Violations, Order No. 86-HW-003, to Missouri Pressed Metals. Among other requirements, the Order required Missouri Pressed Metals to submit a closure plan for all contaminated areas and develop and implement a groundwater monitoring plan.

On behalf of Missouri Pressed Metals, Consulting Analytical Services International (CaSi) sampled the soil on the south, north and east sides of the building between March and August 1986. Sample results indicated shallow soil along the north and east sides of the building was contaminated with 1,1,1-TCA and related compounds. The department designated the area next to the building as a regulated hazardous waste land disposal unit.

According to applicable state and federal hazardous waste laws and regulations, all hazardous waste treatment, storage and disposal facilities are required to investigate and clean up releases of hazardous waste and hazardous constituents to the environment at their facility resulting from present and past hazardous waste handling practices. As required by the Order, Missouri Pressed Metals submitted a closure plan for the land disposal unit to the department in June 1988. Closure of the land disposal unit began in August 1988 and included removing approximately 40 cubic yards of soil along the north and east sides of the building and disposing it off-site at a permitted facility. Additional soil sampling performed in the excavated area revealed varying amounts of 1,1,1-TCA and related compounds in the soil at depths of three feet or more across the majority of the area, and at depths of five feet or more in isolated areas. It was determined that continued soil removal was no longer feasible.

Due to the amounts of 1,1,1-TCA detected in the soil during the closure process, the department requested Missouri Pressed Metals to perform a groundwater investigation to determine if the 1,1,1-TCA contamination had entered the groundwater. On behalf of Missouri Pressed Metals, Geraghty & Miller Inc. submitted a Groundwater Investigation Report to the department in January 1990. Nine groundwater monitoring wells were installed at the facility. The sample results showed varying levels of 1,1,1-TCA in the soil and groundwater to the north and east of the building. Based on these results, it appeared a spill or series of spills occurred in the area of the north northwest end of the building.

In 1991, Metcalf & Eddy Inc. performed a Resource Conservation and Recovery Act, or RCRA, Facility Assessment for the site, on behalf of EPA. The assessment was conducted to identify and gather information on actual and potential releases of hazardous waste and hazardous constituents to the environment from any solid waste management units or area of concerns at the facility. The 1991 RCRA Facility Assessment Report identified three solid waste management units and three areas of concern, in addition to the former land disposal unit. One area of concern, the sanitary waste water treatment system and drain pipe, was recommended for additional investigation. Missouri Pressed Metals identified nine additional solid waste management units in their March 1994 hazardous waste permit application.

In 1992, Missouri Pressed Metals submitted a groundwater assessment plan to the department and initiated a phased investigation to determine the vertical and horizontal extent of groundwater contamination at the facility. Sampling results indicated groundwater contamination beyond the facility property boundary directly north of the facility. Missouri Pressed Metals attempted to gain access to the property to the north of the facility to investigate the extent of off-site groundwater contamination; however, access was denied by the landowner. As a result, the full extent of groundwater contamination has not been determined. In 1995, Missouri Pressed Metals installed a groundwater extraction system in order to capture and treat the contaminated groundwater. The system includes an interceptor trench with a collection sump that discharges to the City of Sedalia’s waste water treatment plant.

The remaining contaminated soil in the land disposal unit was covered with an engineered cap. Missouri Pressed Metals filed a Deed Notice, recorded by the Pettis County Recorder of Deeds in March 1996, in order to inform potential future buyers of the property that the property was used to manage hazardous waste. The deed notice restricts the property owner or operator from disturbing the former hazardous waste land disposal unit described in a survey plat attached to the notice. The department accepted Missouri Pressed Metals’ closure report and certification for the former land disposal unit in February 1997; however, because hazardous waste remained in place after closure, the area is also required to go through a period of post-closure care. As part of the post-closure care, Missouri Pressed Metals is required to perform long-term monitoring and maintenance of the closed land disposal unit, including groundwater monitoring.

From 1993 through 1998, groundwater was sampled four times a year at the facility. Based on the investigations and remediation completed, the department determined no further corrective action was required at that time for any solid waste management units or areas of concern, other than the former hazardous waste land disposal unit. In September 1998, the department and EPA replaced Missouri Pressed Metals’ 1986 Order with two hazardous waste permits.

The department and EPA incorporated the approved final remedy into Missouri Pressed Metals’ hazardous waste permits. The approved remedy includes the groundwater extraction system. Missouri Pressed Metals currently samples the groundwater once a year as part of their groundwater monitoring program, which is used to assess the extent and stability of groundwater contamination at the facility, in addition to determining the effectiveness of the groundwater extraction system.

Missouri Pressed Metals is conducting post-closure and corrective action activities under a department-issued Missouri Hazardous Waste Management Facility Part I Permit, effective March 20, 2015. This permit was first issued in 1998, along with an EPA-issued Hazardous and Solid Waste Amendments Part II Permit. The department reissued the Part I Permit; however, EPA decided not to reissue the Part II Permit, since EPA has no site-specific conditions for Missouri Pressed Metals beyond those contained in the Part I Permit and Missouri is fully authorized for all permitting, post-closure and corrective action activities at the facility.

The Part I Permit requires Missouri Pressed Metals to continue to perform long-term monitoring and maintenance of the closed land disposal unit, the only regulated unit under the current permit. The permit requires Missouri Pressed Metals to implement a sitewide corrective action program, including groundwater and surface water monitoring, to address releases from solid waste management units and areas of concern. The permit also requires corrective action in the event there is a newly-identified release to the environment or if the contaminated groundwater poses a threat due to further migration.