Wedron Groundwater Contamination Site
Community Involvement Coordinator
Heriberto León (email@example.com)
312-886-6163 or 800-621-8431, ext. 66163
Steven Faryan (firstname.lastname@example.org)
312-353-9351 or 800-621-8431, ext. 39351
Community Relations Coordinator
Office of Community Relations
1021 N. Grand Ave. East
P.O Box 19276
Springfield, IL 62794
Remedial Project Manager
Jeffrey J. Guy
1021 N. Grand Ave. East
P.O Box 19276
Director of Environmental Health
LaSalle County Health Department
Ted Pumo, LEHP
815-433-3366, ext. 223
On this page:
- Site Update
- Site History
- Site Description
EPA and Illinois EPA have been working in Wedron, Ill., to determine which private drinking water wells have been affected by pollution. The agencies are also investigating potential sources of the groundwater contamination. “Groundwater” is an environmental term for underground supplies of fresh water.
In 2011, residents of Wedron reported gasoline odors from their water. As a result, the Illinois Department of Public Health collected groundwater samples in October 2011 and found two homes with benzene levels above the health standard. In November 2011, the LaSalle County Health Department told these residents to no longer drink or use their well water. Illinois EPA then contacted EPA, which began the current investigation.
Beginning in December 2011, EPA collected groundwater samples from 22 residential wells and one commercial well in the town. These samples were tested for the presence of a family of chemicals called volatile organic compounds (VOCs), semi-volatile organic compounds and metals.
Private Well Sampling – The Wedron private water well sampling event (29 wells total) is scheduled for August. Illinois EPA will assist the LaSalle Co. Health Dept. in collecting the water samples and the Illinois EPA’s laboratory will analyze them. The laboratory results should be available within a month. The Illinois Department of Public Health will interpret the results and prepare a letter for each property owner and/or occupant household to explain their specific results.
New technical documents available – An October 2014 U.S. EPA memorandum titled “Evaluation of the Wedron Groundwater Site’s Identified BTEX Source Areas and Their Relationship to BTEX Groundwater Contamination in the Village of Wedron, Illinois,” an April 2015 Illinois EPA report titled “Data Evaluation Report,” and a July 2015 U.S. EPA memorandum titled “Report Review - Data Evaluation Report, Wedron, LaSalle County, Illinois, April 2015” are now available under the technical documents tab on this webpage. These documents identify likely source areas of the groundwater contamination in Wedron.
Two investigation reports are final - In late winter 2015, two reports on investigations of possible sources of soil and groundwater contamination in Wedron were accepted as final by U.S. EPA and have also been added to the technical documents posted to the web page:
· ”Wedron Site Investigation Technical Memorandum by BP” (for the former BP Terminal Property on the NE edge of Wedron)
· “Wedron Silica Company - Final Report – Administrative Order on Consent” (for their properties to the east and south of the residential area of Wedron)
Illinois Railway submitted an updated report to U.S. EPA in May 2015, and the Agency is working with Illinois Railway to finalize it. The report includes results from an additional investigation that U.S. EPA asked Illinois Railway to perform this winter at locations on its property where underground storage tanks were located. The additional investigation was needed to fully characterize soil and groundwater contamination found during the initial investigation on Illinois Railway property.
Also, Illinois Railway must submit a Site Investigation Completion Report to the Illinois EPA’s Leaking Underground Storage Tank (Leaking UST) Program for investigations of former UST areas on Illinois Railway property.
Wedron Silica Company’s UST cleanup plan approved – The Illinois EPA has approved Wedron Silica Company’s Leaking UST Corrective Action Plan to address contamination identified at a former UST area on its property. Implementation of the plan will begin during the Summer of 2015. This contamination has been thoroughly defined and is not considered to be one of the potential source areas for the Wedron residential area groundwater contamination.
Next steps - Illinois EPA is working to have a contractor perform a Fall 2015 pumping test of the lower aquifer in Wedron to better understand hydraulic properties of that aquifer. The pumping test results will help identify whether the uncontaminated lower aquifer will support additional new private wells and whether it is isolated from the upper aquifer. With that critical information, the agencies will work to identify remediation technologies and cleanup options.
Air monitoring – U.S. EPA has received air monitoring data for the months of February, March, and April 2015 under a U.S. EPA-approved air monitoring program for particulate matter. The program provides data on dust leaving Wedron Silica Company and Technisand operations in Wedron. The companies will continue to submit data to U.S. EPA each month under the approved air monitoring program until February 2016. Data collection is being overseen by U.S. EPA. The data files for the months of February, March, and April 2015, listed below, are now available under the technical documents tab on this webpage.
- Appendix A. PM 4 Crystalline Silica Data Summary February 2015
- Appendix A. PM 4 Crystalline Silica Data Summary March 2015
- Appendix A. PM 4 Crystalline Silica Data Summary April 2015
- Appendix F. TEOM Data February 2015
- Appendix F. TEOM Data March 2015
- Appendix F. TEOM Data April 2015
- Appendix B. PM4 Particulate Matter and Crystalline Silica Filter Data February 2015
- Appendix B. PM4 Particulate Matter and Crystalline Silica Filter Data March 2015
- Appendix B. PM4 Particulate Matter and Crystalline Silica Filter Data April 2015
In April 1982, Illinois EPA began a groundwater investigation in Wedron after the Illinois Department of Public Health received complaints from several residents of gasoline-type odors in their private well water. Illinois EPA collected groundwater samples from several private wells in April 1982, June 1983 and August 1983 and confirmed the presence of chemicals found in gasoline. At that time, a new deeper well was drilled to provide clean drinking water to the affected homes. In addition, an investigation of several potential sources of contamination was completed, but no source was found.
The site is the unincorporated community of Wedron located in LaSalle County, Ill. The site is located in a mixed rural, residential, and industrial area. North of the site are residential homes, agriculture, and undeveloped land. To the east are the Fox River, agriculture, and undeveloped land. To the south are the Wedron Silica sand-mining facility and mining pits; and to the west are two Wedron Silica quarries, agriculture, and undeveloped land. Current and former commercial and industrial properties known at the site include the Fairmount Minerals Ltd., Wedron Silica Mining Co., Illinois Railway railroad company, the former Hoxsey gas station, and the former W.D. Grain Co.
- Frequently Asked Questions about the Wedron Groundwater Contamination Site
- Basic Information about the Superfund Program
- Frequent questions about the Superfund Program
You will need Adobe Reader to view some of the files on this page. See EPA's PDF page to learn more.
- EPA Explores Alternative Water Source (PDF)(2pp, 158K) June 2013
- EPA Considers Options for Contaminated Wells (PDF) (2pp, 110K) February 2013
- What You Should Know About the Problem of Vapor Intrusion (PDF) (2 pp, 162K)
- Basic Information about Benzene in Drinking Water
- ATSDR Benzene fact sheet (PDF)(2 pp, 54.7K)
- EPA Looking for Pollution Source in Underground Water (PDF) (2 pp, 1.6MB) October 2012
- Appendix B. PM4 Particulate Matter and Crystalline Silica Filter Data - Air Monitoring Data (PDF) (14pp, 75KB) April 2015
- Appendix B. PM4 Particulate Matter and Crystalline Silica Filter Data - Air Monitoring Data (PDF)(18pp, 118KB) March 2015
- Appendix B. PM4 Particulate Matter and Crystalline Silica Filter Data - Air Monitoring Data (PDF) (14pp, 82KB)February 2015
- Appendix F. TEOM Data - Air Monitoring Data (PDF) (162pp, 818KB)April 2015
- Appendix F. TEOM Data - Air Monitoring Data (PDF) (216pp, 118KB) March 2015
- Appendix F. TEOM Data - Air Monitoring Data (PDF) February 2015 (156pp, 871KB) April 2015
- Appendix A. PM 4 Crystalline Silica Data Summary - Air Monitoring Data (PDF)(1pp, 22KB) April 2015
- Appendix A. PM 4 Crystalline Silica Data Summary - Air Monitoring Data (PDF) (1pp, 22KB) March 2015
- Appendix A. PM 4 Crystalline Silica Data Summary - Air Monitoring Data (PDF) (1pp, 101KB)February 2015
- Wedron Site Investigation Technical Memorandum by BP (PDF) (3506pp, 77MB*) May 2014 *LARGE FILE SIZE
- Wedron Silica Company - Final Report – Administrative Order on Consent (PDF) (490pp, 58MB*) November 2014 *LARGE FILE SIZE
- Report Review - Data Evaluation Report, Wedron, LaSalle County, Illinois (PDF) (1pp, 120K)April 2015
- Data Evaluation Report (PDF)(232pp, 22MB) April 2014
- Evaluation of the Identified BTEX Source Areas and Their Relationship to BTEX Groundwater Contamination (PDF)(3pp, 1.2MB) October 2014
- Pollution Report #6 (PDF) (6pp, 382K) February 2015
- Letter Health Consultation Wedron Groundwater Contamination Site (PDF) (7 pp, 76 K) June 12, 2014
- Pollution/Situation Report #5 (PDF) (5 pp, 260 K) May 28, 2014
- Community Involvement Plan (PDF) (32pp, 320K) February 2014
- Amended Action Memo (PDF) (39pp, 2.8MB) January 2014
- Site Investigation Report Hoxsey Property (PDF ) (298pp, 10.3MB) December 2013
- Illinois EPA Investigation Report of the Hoxsey Property (PDF) (294pp, 7.6MB) August 2013
- Sampling Plan Hoxsey Property (PDF) (32pp, 538K) August 2013
- Pollution Report #4 (PDF) (5pp, 38K) October 2013
- Administrative Order on Consent (AOC) BP Products North America Inc. (PDF) (36 pp, 5.62MB) Sept. 30, 2013
- Administrative Order on Consent (AOC) Illinois Railway LLC. (PDF) (35 pp, 1.6MB) Sept. 30, 2013
- Administrative Order on Consent (AOC) Wedron Silica Company; Technisand, Inc.; and Lockheed Martin Corporation (PDF) (40 pp., 3.5MB) Sept. 25, 2013
- Potential Source and Water Table Elevation Contour (PDF) (1 pg, 401K)
- Residential Replacement Well and Proposed EPA Monitoring Well Map (PDF)(1 pg, 386K)
- Water Table Elevation Contour Map (PDF) (1 pp, 574K)
- Conceptual Geologic Cross-Section of Wedron - Illustration of a geologic cross section using well information at the Thompson Park in Wedron, Illinois (PDF) (1 pg, 597K) September 2012
- Wedron Final Letter Report - Revision 1 (PDF) (260pp, 9.6MB) September 2012
- Groundwater Flow and Influences to Groundwater Flow in Wedron, Illinois (PDF) (3pp, 284K) February 2013
- Potentiometric Surface Map, Wedron Groundwater Site (PDF) (4pp, 177K) November 2012
- Potentiometric Surface Map (PDF) (1 pg, 177K) November 2012
- Request for Approval and Funding for a Time-Critical Removal Action (PDF) (20 pp, 1.4MB) November 2012
- Pollution Report #3 (PDF) (5 pp, 39K) February 2013
- Pollution Report #2 (PDF) (4 pp, 39K) May 2012
- Pollution Report #1 (PDF) (3 pp, 35K) March 2012
- EPA held a Public Meeting April 8, 2015 Flier (PDF) (1p, 89K)
- EPA held a public meeting and open house April 23, 2014 to provide updated information on the investigation of the Wedron groundwater site and on the status of an alternate water supply for affected residents.
- Public Meeting Flier September 2013 (PDF) (1pg, 89K)
- Public Meeting Flier March 2013 (PDF) (1pg, 45K)