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Kansas Department of Health and Environment
Bureau of Environmental Remediation
Identified Sites List Information

Project Code: C403072344Site Status:Active
Other Names:
Zip Code: 66067
County: FRRiver Basin: Marais des Cygnes
Latitude: 38.61559Longitude:-95.35918
Program Name: Voluntary CleanupProject Manager:TENPENNY, T.
Contaminants: Other (see Site Narrative)

Environmental Use Control In Place ?   No
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Site Narrative:
On October 9, 2007, ortho-chlorobenzyl chloride (OCBC) was being transported to Kansas City via railway. The train stopped at milepost 62.3 west of Ottawa, Kansas, as railroad personel realized the railcar was leaking product. OCBC was released into soils and shallow surface water in ditches adjacent to the raised railroad bed at the site. Also its degradation product ortho-chlorobenzyl alcohol (OCBA) is present at the site in soils and surface water. Spill activities and an initial environmental assessment was conducted with impacted soil and ballast (2,100 cubic yards) being excavated and properly disposed of. Burlington Northern Santa Fe (BNSF) Railway Company applied for and was accepted into the Voluntary Cleanup and Property Redevelopment program as the secretary executed the Voluntary Agreement on February 8, 2008.

A storm water granulated activiated charcoal (GAC) treatment unit was placed at the site in 2007 to treat surface water. The unit treated storm water to prevent spreading contamination downstream. In October 2011 the storm water treatment unit was decommissioned.

A Voluntary Cleanup Investigation (VCI) was initiated in January of 2009. From the pre-VCI assessment in December of 2007 the maximum level of OCBC occuring in shallow soil (0 to 1 foot below the ground surface) was 2,110 milligrams per kilogram (mg/Kg) located in one solitary spot within the south ditch, perpendicular to the spill area. OCBA was identified from this same soil sample at 346 mg/Kg. OCBC was generally more widespread in the north ditch with a maximum occurance of 826 mg/Kg at 9 foot below the ground surface (bgs). OCBA from this same soil sample was 326 mg/Kg. With a more focused VCI delineation occuring in February 2009, OCBC was found in shallow soils (0 to 1 foot bgs) from the north ditch at a maximum of 1,830 mg/Kg. OCBA from this same sample was identified at 322 mg/Kg. In January of 2012 another VCI was conducted and the maximum level of OCBC was identified in soils (4.5 feet bgs) within the north ditch at 302 mg/Kg. The OCBA identified from this same sample was at a level of 943 mg/Kg. Evidence shows that over time OCBC degrades into OCBA in soils.

Surface water near the site was analyzed and OCBC and OCBA was detected. Four monitoring wells and two piezometers have been placed at the site. From February 2009 through February 2012, OCBC has yet to be detected above detection limits in groundwater. In February 2012 from MW#3 (the most downgradient well), OCBA was detected at 0.0024 milligrams per liter (mg/L) barely above the detection limits of 0.0011 mg/L and well below the Risk-based Standards of Kansas (RSK) residential level of 0.309 mg/L for OCBA.

VCI activities analyzing surface water and groundwater were conducted in 2013. No detections of OCBC and OCBA above analytical laboratory reporting limits in groundwater. Low levels of OCBC & OCBA have been identified in surface (creek) water close to spill area, however contamination above reporting limits is not present downstream.

KDHE requested limited surface water sampling continue and concurred that GW monitoring could be terminated. The monitoring wells were plugged in April 2015. The 2016 Surface Water sampling report was received. KDHE comment letter sent in response indicating additional surface water sampling and/or a Risk Assessment will be necessary to cease surface water sampling as OCBC and OCBA are still above detection limits in the surface water. KDHE anticipated an EUC Application/Soil Management Plan and additional surface water sampling or Risk Assessment.

Soil Resampling was conducted in Fall 2016. OCBA remained above RSK/PRO UCL. Soil resampling (MNA) was conducted in Fall 2019, and concentrations of OCBA and OCBC were not identited above the RSK levels. As such, the site is eligible for a No Further Action (NFA) Determination. KDHE is awaiting the submission of a legal description for the Site.

Legal Description

Actions Completed
Activity TypeActivityStartCompleted
PRP IDENTIFICATION/NEGOTIATIONVoluntary Agreement 02/09/2008
INTERIM ACTIONInterim Remedial Measure - source11/15/200710/15/2011
INVESTIGATIONVoluntary Cleanup Investigation (VCI)07/18/200802/19/2020

Actions Underway
Activity TypeActivityStartCompleted
No Actions Underway Information Found

Actions Proposed
Activity TypeActivityStartCompleted
No Actions Proposed Information Found

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