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Record of Decision System (RODS)

IONIA CITY LANDFILL

Abstract

Site Name:  IONIA CITY LANDFILL
Address:  CLEVELAND STREET 
City & State:  IONIA  MI  48846
County:  IONIA
 
EPA ID:  MID980794416
EPA Region:  05
 
NPL Status:  Currently on the Final NPL
 
ROD Type:  Record of Decision
ROD ID:  EPA/541/R-00/093
ROD Date:  09/28/2000
Operable Unit(s):  02
 
Abstract:  10-ACRE LDFL USED AS A MUNI REFUSE DUMP DURING THE 1950'S 1960'S WAS CLOSED IN 1968. A NUMBER OF DETERIORATING DRUMS WERE DISCOVERED ON THE SITE IN 1981 AND SUBSEQUENT EXCAVATION & TESTING REVEALED INDUSTRIAL SOLVENTS & HEAVY METALS. 10-ACRE LDFL USED AS A MUNI REFUSE DUMP DURING THE 1950'S 1960'S WAS CLOSED IN 1968. A NUMBER OF DETERIORATING DRUMS WERE DISCOVERED ON THE SITE IN 1981 AND SUBSEQUENT EXCAVA- TION & TESTING REVEALED INDUSTRIAL SOLVENTS & HEAVY METALS.

OU2:
The site consists of an older fill area (Area A) in the northern portion and a later fill area (Area B) in the southern portion of the site. The two areas are divided by the right-of-way of the Chesapeake and Ohio Railroad. The railroad tracks were removed in 1987, and this is now a recreational path for walking and bicycle riding. The site is generally flat and has a grassy cover, with wooded areas along the banks of the Kanouse Drain, an intermittent industry, and the Grand River. Area A is enclosed by a chain link fence, topped with two strands of barbed wire and has an entrance gate to Cleveland Street. Warning sighs are posted around Area A. Area B is not fenced.

The site is situated within the Grand River valley. The landfill is surrounded by relatively steep slopes on its northeast, east and southeast sides. There is also a steep slope on the west side of Cleveland Street which drops down approximately 10 to 15 feet to farmland. The landfill surrounding areas are flat.
 
Remedy:  The selected remedy includes Alternatives 2, 3 and 6. Under Alternative 2, institutional controls and long-term monitoring plans will be implemented. The institutional controls will restrict exposure to potential hazards at the site through restrictions on development of the property, prohibiting construction of drinking water or irrigation wells and provided monitoring and maintenance of the site. Under this alternative, monitoring of the groundwater would be accomplished using an existing array of on-site wells. Monitoring would allow contamination migration and contaminant attenuation to be tracked and remedial action to be taken as necessary.

Under Alternative 3, monitored natural attenuation would be tracked. Monitored natural attenuation is an in-situ process that relies on a number of natural processes to reduce mass, toxicity, mobility, volume or concentration of contaminants in groundwater. These processes include biodegration, chemical transformations, volitalizations, dilution, dispersion, and adsorption.

Alternative 6 calls for groundwater extraction, air stripping, discharge to the City of Ionia's publicly owned treatment works (POTW) and long-term monitoring. Under this alternative, groundwater would continue to be collected and volatile organics would be removed using the existing air stripper. If necessary, polishing of the resultant liquid system utilizing liquid phase carbon adsorption can be included as well as treatment of the air stream, by vapor phase carbon adsorption or catalytic oxidation. The system can be modified/enhanced if additional recovery wells are required to contain the plume. Tested groundwater can be discharged to the POTW. Operation and maintenance of the existing extraction and treatment system that captures 500 ug/L total volatile organic chemical (VOC) contaminant plume would continue. In addition, monitored natural attenuation of the groundwater outside 500ug/L contaminant plume would be conducted until it could be demonstrated that, through natural processes alone in the groundwater outside of the isopath, maximum contaminant levels (MCLs) would be achieved and not exceeded at the waste boundary over time and that GSI discharge limits would be achieved and not exceeded in waters of the state over time.

Cost
Estimated Capital Cost: $156,600
Annual O & M Cost: $166,000
Duration of O & M Cost: 30 years
Total Present Value (7% discount rate): $2.2 million
"Other Costs": Not provided
Estimated Time to Implement: Immediate
 
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