Congressional District # 02
KENT CITY MOBILE HOME PARKEPA ID# MID981089915
Last Updated: December, 2011
The Kent City Mobile Home Park Site is located at 135 Main Street, Kent City, Michigan, about 20 miles north of Grand Rapids. Approximately 75 mobile homes are located on the two-acre site, and roughly 3000 people live within three miles. Land use to the north, south, and west of the site is mixed agricultural and residential; land use to the east is primarily commercial. There are four schools within three miles, though none are in the immediate vicinity. There is no municipal water supply within the city limits. Ball Creek, the closest surface water, crosses the northeast corner of the site and flows southeast.
In 1983, a water supply well at the Kent City Mobile Home Park site was found to be contaminated with low levels of volatile organic compounds (VOCs). The contaminated well was replaced with two new wells that draw water from a deeper, uncontaminated aquifer. The likely source of contamination was a buried 55 gallon drum found approximately 20 feet from the old well. This drum collected floor drainage from a dry-cleaning facility that once operated on the property. In 1984, the drum and surrounding soil were excavated and replaced with clean fill material.
Site ResponsibilityThis site was addressed through state and federal actions.
Threats and Contaminants
Groundwater at the site was contaminated with VOCs that apparently came from a buried 55 gallon drum collecting floor drainage from a dry-cleaning facility near the affected water supply well. VOCs found in samples from the contaminated well include carbon tetrachloride, chloroform, methylene chloride, toluene, and trichloroethylene.
Cleanup ProgressIn December of 1982, the Michigan Department of Public Health (MDPH) sampled the 65-foot deep drinking water supply well located in the Kent City Mobile Home Park. Analysis of the samples revealed groundwater contaminated with the volatile organic compounds carbon tetrachloride, chloroform, methylene chloride, toluene, and trichloroethylene. Under the supervision of the State of Michigan, the owner of the mobile home park replaced the contaminated well with a new well five hundred feet west and upgradient of the contaminated well. The owner also installed four monitoring wells in the shallow aquifer, two of which are downgradient from the contaminated supply well. In October 1983 a second on-site water supply well, 120 feet deep and with a separate pumping system, was installed seventy-five feet west of the first replacement well. In November 1983 the State of Michigan placed the Site on the Michigan Act 307 List.
In April 1984 investigators discovered that the probable source of the groundwater contamination at the site was a buried 55-gallon storage drum located approximately 20 feet from the contaminated water supply well. The storage drum collected floor drainage from a dry cleaning facility that once operated on the property. Samples of liquid from the drum revealed some of the same chemicals found in the contaminated well. Solvents from the drum apparently migrated down the well casing. The drum and surrounding soil (which also contained trace amounts of tetrachloroethylene) were removed by the park owner under the supervision of the Michigan Department of Natural Resources (MDNR). The excavation site was filled with clean soil.
In April and May 1984 MDPH sampled the four monitoring wells and twenty-nine nearby private wells. No contamination was detected in any of these wells. The new water supply wells are sampled every three years by MDPH; results have consistently shown no detectable contaminants.
Once the source was removed and groundwater sampling showed no evidence of contamination, the MDNR and the MDPH decided no further action was necessary and removed the site from their Michigan Act 307 List in November 1985. T he U.S. Environmental Protection Agency (U.S. EPA) however, scored the site based on contaminant levels and routes of exposure present before the removal and, on July 21, 1987, placed it on the National Priorities List (NPL). No further activities were undertaken by U.S. EPA until April 20, 1994, when U.S. EPA performed another round of groundwater sampling to verify previous results.
After U.S. EPA determined that conditions at the site posed no current or potential threat to human health or the environment, it issued a “No Action” Record of Decision on August 15, 1994. Because U.S. EPA determined that no further remedial action is necessary at the site, the site qualified for inclusion in the "sites awaiting deletion" subcategory on the National Priorities List.
Success StoryIn 1994 U.S. EPA determined that no further cleanup actions were required. The site was deleted from the National Priorities List on March 20, 1995.
ContactsRemedial Project Manager, U.S. EPA
william ryan (email@example.com)