EAST TROY CONTAMINATED AQUIFER
EPA ID# OHSFN0507962 Last Updated: November, 2011
The East Troy Contaminated Aquifer site is located in the eastern portion of the City of Troy, Miami County, Ohio along the western bank of the Great Miami River. The site boundaries and all contamination source(s) have not yet been identified. The remedial investigation and feasibility study (RI/FS) will provide this information. Existing data demonstrates that the site includes at least a 25-block area where volatile organic compounds (VOCs) have been identified in groundwater, soils, and indoor air space of residential, public and commercial properties. Across the Great Miami River, within 0.25 miles of the site is the city of Troy's East Well Field which serves as a drinking water supply for the city of Troy. Since 1988, the VOCs, cis-1, 2-dichloroethane (cis-1, 2-DCE) and trichloroethene (TCE), have been consistently detected in samples taken from the East Well Field.
The site was proposed on the National Priorities List (NPL) in September 2007, and one year later in September 2008, the site was finalized on the NPL.
U.S. EPA is the lead agency. Ohio EPA is providing support to U.S. EPA.
Threats and Contaminants
Contaminants identified in ground water include tetrachloroethene (PCE), TCE, cis-1, 2-DCE, and vinyl chloride. Elevated levels of PCE in groundwater and soil gas were detected in a three block residential area between Franklin Street and Main Street. PCE concentrations as high as 801 parts per billion (ppb) in groundwater and 58 ppb in soil gas were found in samples collected from residential yards along Franklin Street. The EPA has documented a total of sixteen residential locations and one elementary school with indoor air PCE, and/or TCE vapor concentrations exceeding the Agency for Toxic Substances and Disease Registry (ATSDR) health screening level of 1.2 ppb or 0.4 ppb, respectively. The EPA installed vapor abatement systems at sixteen homes and one elementary school as part of a 2007 U.S. EPA removal action.
Although VOCs detected in samples from the East Well Field are below federal Maximum Contaminant Levels (MCLs), contaminated ground water (plume) is migrating towards the well field, which provides drinking water to approximately 28,000 people in the city of Troy. Additionally, vapor intrusion of VOCs into indoor air is a concern for residents living in the area.
Field work for the RI/FS began in the summer 2010 with the collection of surface water and sediment samples from the Great Miami River. Groundwater samples were also collected from 19 existing monitoring wells in residential neighborhoods. In the fall 2011, 14 new groundwater monitoring wells will be installed in the neighborhood and groundwater samples will be collected from the new wells and the 19 existing wells. Surface and subsurface soil samples will also be collected and a sewer investigation conducted. Sub-slab and indoor air sampling in homes will begin in the fall/winter 2011. Homes that were not sampled as part of the 2007 EPA removal action will be sampled first followed by homes that may be at risk of exposure due to vapor intrusion. Homes with existing vapor abatement systems will also be sampled to confirm the systems are operating properly. Initially 36 homes will be sampled in November/December. Up to 200 homes may be tested as part of the vapor intrusion investigation.
The EPA conducted a public meeting in Troy, Ohio on October 19, 2011 to update residents on the planned RI sampling and to explain the vapor intrusion monitoring that will take place in the residential neighborhoods. Representatives from the Ohio EPA, Ohio Department of Health, the city of Troy, and the Mayor attended. The EPA will keep residents informed throughout the RI/FS and vapor intrusion investigation via fact sheets, EPA's web site, public meetings, and newspaper releases.
Remedial Project Manager, U.S. EPA shari kolak (email@example.com) (312) 886-6151
Site Profile Information
MIAMI COUNTY INCINERATOR
EPA ID# OHD980611800
Last Updated: September, 2010
The 65-acre Miami County Incinerator site, located in Miami County, Ohio, contains the following areas of concern: the South Landfill, the North Landfill, the Liquid Disposal Area, the Ash Disposal Pit, the Ash Pile, and the Groundwater. The incinerator and landfills were opened in 1968, to process and dispose of municipal and industrial wastes. Combustible wastes were to be incinerated and the non-combustible wastes were to be landfilled; however, large volumes of combustible wastes were landfilled along with non-combustible wastes. Liquid wastes including waste oils and solvents were dumped or buried onsite. A contaminated plume of organic chemicals flowed from the liquid disposal area into the Great Miami River. This plume contaminated wells of many residents who live near the site. Municipal wells serving 19,000 people are located within three miles of the site. The plume contaminates a sole source aquifer.
The United States Environmental Protection Agency (U.S. EPA) proposed the site to the National Priorities List (NPL) on September 8, 1983, and finalized the Site on the NPL on September 21, 1984.
This site is being addressed through federal, state, and potentially responsible parties' actions.
Threats and Contaminants
Volatile organic compounds (VOCs) and heavy metals including arsenic, barium, and cadmium were detected in groundwater near the Liquid Disposal Area. Sediments along the unnamed creek are contaminated with pesticides and polychlorinated biphenyls (PCBs). VOCs, polycyclic aromatic hydrocarbons, PCBs, dioxins, pesticides, and heavy metals including arsenic, lead, cadmium, and chromium were detected in soil below the surface of the Liquid Disposal Area. Potential health risks exist for those who ingest contaminated water or soil. Cleanup workers and children playing on the site may be most at risk. However, the site does have ground cover, lessening the opportunity for direct contact with the soil.
The potentially responsible parties (PRPs) voluntarily connected residents with affected wells to City of Troy water in 1989-1990. U.S. EPA completed a Record of Decision (ROD) for the site in June 1989. A Consent Decree (CD) between U.S. EPA and the PRPs was lodged with the court on December 18, 1989. The CD was not entered by the court until March 30, 1993.
The PRPs took the following actions. The Remedial Action was designed in 1993-1994. In 1994, the Ash pit was capped with an impermeable cap. In 1995, the Ash Pile was placed on the South Landfill which was then capped. In 1996, the North Landfill and Liquid Disposal areas were capped, a soil vapor extraction (SVE) system was installed in the Liquid Disposal area and a groundwater extraction and treatment system was installed.
Between 4,000,000 and 6,000,000 gallons of contaminated groundwater are being extracted and sent to the Troy Treatment Plant for treatment each month. The SVE system met the performance standards for VOC removal and was shut down on April 5, 2000. Groundwater treatment will continue until groundwater standards are met, which may take 10 to 15 years.
A Five-Year Review Report for the site was issued on September 20, 2000. The review concluded that the remedial action taken at the site remains protective of public health and the environment. The Second Five-Year Review Report for the site was issued on September 14, 2005, and U.S. EPA completed the Third Five-Year Review Report on June 14, 2010. Both reports concluded that the remedial action taken at the site remains protective of public health and the environment. Groundwater treatment continues at the site.
Currently, the property is owned by Miami County. Located on the property is a waste transfer station and offices for the Miami County Engineering office. None of the buildings are on the former landfills or the former liquid disposal area
EPA Randomly Picks Swift Run for Assessment
This isn’t our choice. USEPA randomly selected lakes across the country for the “National Lakes Assessment” and Swift Run came up. While it isn’t targeted at any single parameter it won’t hurt to have the previous data to compare with what we gather this time. Most of the lakes in the assessment have never been assessed so this study will give us a better understanding of our lakes. There is a chance that we won’t survey Swift Run but it is too early to say for sure.
DRINKING WATER NOTICE
Piqua City PWS Has Levels of TTHM above Drinking Water Standards
water system recently violated the maximum contaminant level (MCL) for
TOTAL TRIHALOMETHANES (TTHM). The average level of TTHM over the last
four quarters was 0.087 MG/L. The standard for TTHM is 0.080 MG/L. ~
What should I do?
• You do not need to use an alternative (e.g., bottled) water supply. However, if you have specific health concerns, consult your doctor.
What does this mean?
The levels detected do not pose an immediate risk to your health. However, some people who drink water containing trihalomethanes in excess of the MCL over many years may experience problems with their liver, kidneys, or central nervous systems, and may have an increased risk of getting cancer.
What is being done?
We are investigating and taking the necessary steps to correct the problem as soon as possible.
Additional information may be obtained by contacting:
Contact Person: Don Freisthler
Phone Number: 937-778-2090
Mailing Address: 201 W Water St., Piqua, OH 45356
share this information with all the other people who drink this water,
especially those who may not have received this notice directly (for
example, people in apartments, nursing homes, schools and businesses).
You can do this by posting this notice in a public place or distributing copies by hand or mail.
Date Distributed: _ 9-22-2011
Monitoring Period: Second Quarter of 2011
OEPA Information on water:
OEPA Response to Troy Water Concerns
Dear Mr. Lange,
Please see the answers to your questions below. Also, US EPA is planning a meeting in Troy on Oct. 19, which will be announced soon. I plan to attend.
Is all of Troy's wells producing and going out for use to their customers? They are all used in rotation; no VOCs have been detected in finished water.
Does US and Ohio EPA's plan on having Troy clean up these two Super Fund sites? Yes. This will be discussed at the aforementioned meeting.
What will be share of clean up costs being picked up by Troy if they are to clean it up? None.
Can Piqua be harmed financially by hooking into Troy's water as far as these costs go? You should check with your local officials.
How many wells of Troy are tainted / tested and what are the chemicals that are in these wells? 4. PW-12W, PW-3W, PW-14, PW-18. PCE, TCE, cis 1,2-DCE All three in PW-12W, PCE above MCL. Only cis 1,2-DCE in PW-3W. Traces of TCE and cis 1,2-DCE in wells 14 and 18 occasionally.
Does Troy see any Atrazine in their wells? No.
Please let me know if you need anything else.
Public Involvement Coordinator
Ohio EPA Public Interest Center
50 W. Town St., Suite 700
Columbus, OH 43216-1049