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BAY COUNTY
BAY CITY
Congressional District # 05
BAY CITY MIDDLEGROUNDS
EPA ID# MID981092935Last Updated: August, 2006
Site Description
BAY CITY MIDDLEGROUNDS
Bay City, Michigan
Federal Register Notice: February 13, 1995
The Bay City Middlegrounds site occupies approximately 40 acres of land on Middlegrounds Island in the Saginaw River in Bay City, Michigan. The Bay City Middlegrounds site is located at 800 Evergreen Dr. just north of Cass Ave. Approximately 58,900 people live within a 4-mile radius of the site.
The Bay City Middlegrounds site is an inactive landfill and dredged sediment disposal area owned and previously operated by Bay City. The landfill accepted wood, concrete and other construction and demolition debris, municipal and household wastes, and industrial wastes, both liquids and solids. The sediment disposal area consists of piles of sediments dredged from the Saginaw River and Saginaw Bay by the U.S. Army Corps of Engineers. The sediments in some areas of the river and bay have been found to be contaminated with a variety of hazardous substances, including pesticides and PCBs.
The landfill contains a mixture of wastes, including construction and demolition debris, household and municipal wastes, and solid and liquid industrial wastes. There has been extensive sampling of the soils and groundwater associated with the landfill and analytical results have revealed high concentrations of PCBs in certain areas of the landfill. Other contaminants found at elevated concentrations include solvents, benzene, toluene, ethylbenzene, xylenes, polynucleic aromatics, phthalates, pesticides, and a variety of other contaminants.
The dredged sediment piles on the north end of the site were placed on the site, dewatered, and used for other purposes including daily cover for the landfill. Analytical results from the samples collected from this source have revealed the presence of polynucleic aromatics, phthalates, PCBs, pesticides, and heavy metals.
Hazardous substances from the site have contaminated the groundwater and surface water. The major threat that the site poses is to surface water. Contaminated groundwater and surface runoff discharge to the Saginaw River and have contaminated areas which are fished as well as a small river wetland. A drinking water intake for the Bay municipal system, which serves approximately 94,426 in Bay City and the surrounding area, could potentially be affected by site contamination; also potentially affected are more fisheries in the river as well as in the bay, wetlands, Federal- and State-designated threatened and endangered species, and a State-designated wildlife area.
Site Responsibility
The City of Bay City purchased the Site in early 1950s. The filling began around 1956. According to Michigan Department of Natural Resources (MDNR which is now MDEQ)during the late 1950s and 1960s, the basic method of operation was to excavate and fill trenches. These trenches were excavated, filled and covered. Between 1971 and 1974, Bay City placed a 5' thick clay over the areas that had utilized the trench method of refuse disposal. The landfill ceased operations in August1984 by MDNR. In August 1986, the City and MDNR reached a consent agreement that addressed final closure and monitoring of the landfill. In 1987, a 2' clay cap was constructed over the bermed landfill area, and a leachate collection drainage system was installed.
Threats and Contaminants
Dissolved polychlonated biphneyls (PCB) were not detected above GSI criteria. Total PCBs were detected in non-filtered samplesabove GSI criteria. Total selenium was detected above generic GSI criteria. Total and dissolved Zinc were detected above generic GSI criteria. No horizontal migration of PCBs and no onsite monitoring wells had Volatile Organic Compound (VOC) or Semi Volatile Organic Compounds (SVOC) concentration were present above MDEQ criteria.
Cleanup Progress
In order to protect human health and the environment the PRP has to address exceedances of PCBs and zincthat are above GSI criteria followed by long term monitoring to demonstrate GSI compliance. The PRP with their consultant met with MDEQ, and sampled the treatibity study for Ammonia Evaluation Work Plan of west channel of Saginaw River, and sampled the temperature and pH at the GSI well locations. In March 2006, on request of Michigan Department of Environment Quality (MDEQ), Conestoga-Rovers (consultants for Potential Responsible Parties) finished the treatability study for ammonia "Ammonia Work Plan" and awaiting response from MDEQ. In July 2006, Conestoga-Rovers provided results for the semi-annual monitoring event and the quarterly monitoring of the West Channel of the Saginaw River (River) for ammonia; collected additional pH and temperature data from the River; and met with the MDEQ to discuss the ammonia matter.
Property Reuse
Future land use for the Site is to construct an "executive" golf course with associated facilities.Contacts
Remedial Project Manager, U.S. EPAsirtaj ahmed (ahmed.sirtaj@epa.gov)
(312) 886-4445
Community Involvement Coordinator, U.S. EPA
Don De Blasio
(312) 886-9749