Congressional District # 08
ROSE TOWNSHIP DUMPEPA ID# MID980499842
Last Updated: May, 2010
The Rose Township Dump site is located in Rose Township, Oakland County, Michigan, approximately 40 miles northwest of Detroit and one mile west of the town of Rose Center. The site is comprised of approximately 100 acres of undeveloped, rural property. The site comprises an upland area which is almost completely surrounded by wetlands. The southern periphery is heavily wooded with hardwoods. The middle portion of the site, a rolling meadow, is bordered by a marsh to the west and the northeast, and Demode Road to the north. Adjacent to the site, a sparse population is located next to several small lakes. However, development continues to occur in these areas. The population of Rose Township is about 4,600 people, all of whom depend upon groundwater as a drinking water source.
The site was originally farmed through the late 1950's. In the 1960's, farming was abandoned and illegal waste disposal began. The operators placed an estimated 5,000 drums of waste on, and into, 12 acres of the southwest part of the site. The waste consisted of solvents, paints, and polychlorinated biphenyls (PCBs). Another portion of the site was contaminated by lead battery sludges. Surface soils located along the southwestern edge of the site were contaminated with PCBs, lead, and volatile organic compounds (VOCs).
Site ResponsibilityThis site is being addressed through federal, state, and potentially responsible party (PRP) actions.
Threats and Contaminants
The wastes disposed of at the site include PCBs, lead paint sludges, and VOCs such as toluene, benzene, and trichloroethene. VOCs, lead, and PCBs leaked from the drums and contaminated the surface soils (lead, PCBs), subsurface soils (VOCs), and groundwater (VOCs) at the site. The groundwater also contains vinyl chloride, a breakdown product of trichloroethene.
In 1968 the Oakland county Health Department (OCHD) was notified of the illegal dumping at the site. A subsequent court action ordered a site cleanup by the waste hauler. In 1969, an adjacent landowner sued the waste hauler and the site property landowner, demanding that the site be cleaned up. No cleanup occurred in that time period.
In 1971, Rose Township also brought suit against the waste hauler and property owner to force dumping to cease and to initiate a cleanup. Dumping ceased and it is reported that some cleanup did occur.
The Michigan Department of Environmental Quality (MDEQ), then known as the Michigan Department of Natural Resources (MDNR), was notified about the site by OCHD in April 1979. The MDEQ surveyed the area and identified approximately 1,500 drums. Although some of the drums were partially buried, most had been left on the surface and were leaking or bulging. The drums were sampled by MDEQ in June 1979. In addition, MDEQ sampled private wells and found low levels of trichloroethylene (TCE) and perchloroethylene (PCE). MDEQ supplied the homes with bottled water until mid-1980 when a second round of sampling showed no contamination in the wells.
MDEQ initiated a removal action at the site in 1980, removing over 5,000 drums from the site. In addition, MDEQ initiated a hydrogeologic study of the site and found groundwater contamination below the shallow aquifer. In July 1982, the site was placed on the National Priorities List (NPL). In 1984, the MDEQ, in conjunction with the United States Environmental Protection Agency (EPA), began a remedial investigation and feasibility study (RI/FS). In 1985 and 1986, EPA removed an additional 31 drums of wastes plus about 20 cubic yards of PCB-bearing soil and fenced portions of the site.
The Agency issued a Record of Decision (ROD) in 1987, and reached a cleanup agreement (embodied in a Consent Decree) with 12 Detroit area companies in 1989. During 1992 and 1993, the 12 companies constructed and operated a mobile incinerator at the site to treat PCB-bearing surface soils. Over 21,000 cubic yards (38,000 tons) of soil were treated by incineration. In March 1992, an interim groundwater pump and treat system was constructed and operated to contain the groundwater contaminant plume while incineration was ongoing. The system pumped and treated, via air stripping, over 68,000,000 gallons of water, until the final network was brought on-line in February 1996. The groundwater extraction and treatment system now treats between 8 and 12 million gallons per month, so that over 2 billion gallons of groundwater have been treated since the groundwater cleanup began.
A soil vapor extraction (SVE) unit was constructed and began operating in February 1996. Since then, over 6,800 pounds of benzene, toluene, trichloroethene, and other VOCs have been removed from the subsurface soils. Over 140,000 pounds of organic compounds have also been biodegraded by the SVE system.
The SVE system treated approximately 123,000 cubic yards of contaminated soils using 91 SVE wells. A four-week SVE spike test was implemented in October 2005. At that time, the SVE system had removed and treated over 6,800 pounds of VOCs, before achieving asymptotic levels. VOCs, since December 2001, have diminished to insignificant levels (approximately 0.00 to 0.08 pounds per day). The spike test demonstrated that the SVE system had effectively removed the VOC mass within its design capacity and continued operation of the system, either in continuous or pulsed mode, would neither be cost effective or provide any additional contaminant waste removal. Therefore, in January 2006, EPA and MDEQ granted approval to shut down the SVE system based on the results of the spike test. The system was shut down on January 20, 2006.
The Agency, in consultation with MDEQ, completed the first five-year review of the cleanup in September 1997, the second five-year review in June 2002, and a third five year review in June 2007. Based on the data review between 2002 and 2007, the Agency and MDEQ determined that additional monitoring wells were necessary to evaluate migration of the contaminant plume and possibly reconfigure the groundwater extraction system. Specifically, in 2006, an independent EPA capture zone analysis, along with data from wells at the edge of the plume, showed that complete capture was not occurring.
Steps have been taken to optimize the pumping capacity of the groundwater extraction system to achieve complete hydraulic capture. Extraction wells were fitted with larger pumps and pumping rates were increased. Data and subsequent capture zone analysis determined that the optimization of the groundwater extraction system, noted above, was successful in achieving complete capture of the groundwater plume. This analysis was completed in September 2008. Groundwater monitoring will continue to ensure that plume capture continues to be successful.
Vinyl chloride had been consistently detected in two residential wells and to mitigate this problem, a treatment system was installed at one residence in April 2005. The treatment system has been successful in treating the vinyl chloride concentration to non-detectable levels. In November 2008, this residential well was replaced with a deeper well. The treatment system was also disconnected. In March 2009, the other residential well was also replaced with a deeper well. Deeper wells installation was recommended in the last five-year review.
As a result of June 2009 Chrysler bankruptcy proceedings, EPA has taken over the site remedy implementation. A Five-Year Review Report Addendum was completed September 2009.
As a result of Chrysler's bankruptcy proceedings, EPA utilized site-specific special account funding to restart the groundwater treatment system and take over the site remedy implementation.
Community InvolvementA notice was sent to the local newspaper on February 25, 2007. The public notice described the Rose Dump Site, stated that a five-year review of the cleanup was being conducted by EPA, and that the public could participate in the process. No comments were received in response to the public notice. EPA also provided the public with a notice of the completion of the five-year review.
Property ReuseThe site is currently zoned as agricultural use. The EPA will consider future site land use and whether additional Isttitutional Controls (ICs) are required.
ContactsRemedial Project Manager, U.S. EPA
nabil fayoumi (email@example.com)
Community Involvement Coordinator, U.S. EPA