Site Summary ProfileEPA ID: MSD008154486
Location: Gulfport, Harrison County, Mississippi
NPL Status: Final
Affected Media: soil, groundwater
Cleanup Status: not implemented
Human Exposure Under Control: yes
Ground water Migration Under Control: No
Sitewide Ready for Anticipated Use: No
Site Manager: Rachel McCullough (email@example.com)
As of March 2013, the remedial actions described in the 2002 Record of Decision have not been implemented. In March 2013, EPA issued a Unilateral Administrative Order (UAO) to compel the State of Mississippi to implement the cleanup actions at the site. EPA is currently negotiating with the State of Mississippi to define the path forward for cleanup of the Chemfax site, resolution of outstanding enforcement issues, and preparing the property for reuse/redevelopment.
The Chemfax, Inc. site is located in Gulfport, Harrison County, Mississippi. It is bordered to the east by Three Rivers Road and by Creosote Road to the south. Located to the north is County Barn Road and Bernard Bayou, and to the west are a rail line and the abandoned Alpine Masonite facility.
The Chemfax site occupies 11 acres and was established in March 1955. It produced synthetic hydrocarbon resins and waxes from petroleum products. The primary operation at the time business ceased in 1995 was a paraffin blending process in which different grades of paraffin wax were heated together to a liquid state, blended, and then cooled with water. Cooling water was obtained from an on-site industrial well and stored in an on-site holding pond and re-used.
The Site was proposed to the National Priorities List (NPL) in May, 1993 and finalized in March 2012.
Data obtained during both a 1995 Remedial Investigation (RI) and the 1999 Supplemental Groundwater Investigation indicates that the groundwater within the unconfined surficial aquifer at the Site is contaminated. The surficial groundwater aquifer at the Site is of poor quality as a drinking water resource, but is considered a potential source of drinking water. Data from the Remedial Investigation (RI) indicate that contaminated site soils and sediments are contaminated at levels which could cause further groundwater contamination in the future.
In 1999, EPA conducted a removal action at this site that resulted in approximately 2000 tons of contaminated soil being taken off-site. The purpose of that removal action was to address imminent threats posed by the site.
In 2002 EPA finalized a ROD for the site. Although this ROD addresses many of the same areas as the 1999 removal action, the purpose of the remedial actions is to permanently address long-term threats posed by the Site. The remedial action described in the 2002 ROD encompasses the cleanup of both the contaminated soils/sediments and groundwater associated with the Site. The groundwater remedy in the ROD is extraction and treatment followed by verification monitoring that groundwater performance standards have been reached. The groundwater extraction system then would be shut down, and additional sampling would be conducted after equilibrium has been reached in the sub-surface to ensure performance standards can be maintained under natural conditions.
Threats and Contaminants
The primary contaminants at the site in the soils, ground water, surface water, and sediment are BTEX (benzene, toluene, ethylbenzene, and xylenes), and PAHs (polynuclear aromatic hydrocarbons).
Investigation and Cleanup Responsibility / Oversight
EPA is the lead and the State of Mississippi, as represented by the Mississippi Department of Environmental Quality (MDEQ), has been the support agency during the Remedial Investigation and Feasibility Study (RI/FS) process for the Chemfax, Inc. Site. They have reviewed the documents that comprise the RI/FS and have concurred with the selected remedy in the 2002 ROD and with the modified remedy selected in the 2013 ROD Amendment.
Site Cleanup Plan
The 2002 ROD selected methods to address contamination at the Chemfax site. These remedial actions would address both the remaining principal threats posed by this Site (site soils and sediments) and the contaminated groundwater beneath the Site. The remedial action selected in the 2002 ROD for the soils/sediments is excavation and off-site disposal at an approved facility. The selected remedial action for the groundwater calls for pumping of the groundwater to the surface, where it will be treated by physical and/or chemical means.
The major components of the selected remedy detailed in the 2002 ROD include:
- Excavation of contaminated soils and sediments from those areas exceeding cleanup standards. These soils and sediments constitute the principal threats remaining at the Site;
- Backfilling of the excavated areas with clean soil;
- Off-site disposal, at an approved facility, of the excavated soil and sediment;
- Extraction of the contaminated groundwater to the surface, where it will be treated by physical and/or chemical means, then discharged to surface water;
- Continuation of the groundwater remedial action until the groundwater performance standards are met;
- Designation of a portion of the Site as a Corrective Action Management Unit (CAMU);
- Institutional controls will be placed on the Site to restrict land use while the remedial action takes place.
- Fugitive dust emissions and surface water runoff during the remedial action will be controlled via engineering controls such as water, tarpaulins, or plastic sheeting.
In December 1998, an EPA Site visit revealed that the Site was easily accessible, many drums were stored on-site, and the Site buildings were being lived in by transients. These Site conditions were addressed through Superfund's removal authority, which is intended to address short-term threats to public health and the environment. A removal action was started in July 1999 and was completed December 1999. Several activities were conducted as part of EPA's removal action. Site security was improved in order to limit access to the Site. Asbestos present on remaining equipment was removed and disposed off-site. Drums remaining on-site were removed offsite. Contents remaining in on-site storage tanks were also disposed off-site, in addition to approximately 2,000 cubic yards of excavated soils. Finally, most of the processing lines, tank farms, bulk storage areas, buildings, and structures were dismantled.
In 2009, the Site was re-characterized by Environmental Management Services, Inc. for the EPA and MDEQ to reevaluate the impacts to soil and groundwater observed in prior investigations. No additional cleanup actions have occurred at the Chemfax site since the 1999 removal actions. The updated data shows the groundwater in the area in the uppermost monitoring zone is isolated from the drinking-water supply in the Gulfport area and that a pump and treat remedy would be difficult to implement successfully. The data also shows that some levels of contaminants remain above remedial goals, especially benzene and hydrocarbon contaminants at concentrations that would not biodegrade successfully as a stand-alone cleanup approach.
EPA and MDEQ's analysis showed additional source removal for the soils within the saturated zone and monitored natural attenuation in the shallow groundwater would be an effective means of addressing the remaining contaminants. EPA would also increase the amount of contaminated soil excavated and disposed offsite by approximately 3,000 yd3 for a total soil removal of approximately 18,000 yd3. The amended remedial action described in the 2013 ROD Amendment selected excavation and off-site disposal at an approved facility for the soils/sediments. The amended groundwater remedial action calls for monitoring the natural attenuation of the contaminants in the groundwater until remedial goals are achieved. The major components of the selected amended remedy for this remedial action include:
- Excavation of contaminated soils and sediments from those areas exceeding cleanup standards. These soils and sediments constitute a source of continuing contamination to groundwater that could possibly, if not removed, result in an unacceptable discharge to surface water or migrate into a deeper drinking water resource.
- Backfilling of the excavated areas with clean soil;
- Off-site disposal, at an approved facility, of the excavated soil and sediment;
- Monitored natural attenuation of the groundwater beneath the Site, with long-term monitoring of the groundwater to verify that the migration of contaminated ground water is stabilized, there is no unacceptable discharge to surface water, and to confirm that affected ground water remains in the original area of contamination or the level of contamination in the groundwater is decreasing.
- Designation of a portion of the Site as a Corrective Action Management Unit (CAMU).
- Engineering controls to control surface water runoff, dust, air quality, etc. and ensure that Remedial Action Objectives are met during and after putting the remedy in place;
- Institutional controls to restrict future groundwater use, to be enforced by the State of Mississippi.
The Site is situated on Sixteenth Section land. Title to Sixteenth Section land is vested in the State of Mississippi, in trust for the support of public education. Lease payments during the Site's operation were made to the Harrison County School Board. Future remedial costs are expected to be paid by the State of Mississippi.
EPA Region 4 is currently in negotiations with the State of Mississippi, the property owner, to secure funding for cleanup and to recover past costs incurred during the removal and investigation activities. This is expected to establish a path forward for implementing remedial actions to return the site to beneficial use.
In January of 1995, EPA conducted community interviews with local officials, residents around the Site, and other parties in the area who were interested in the cleanup. On January 19, 1995 an open house was held for the public to inform them of the impending field work that was planned that month for the RI.
A second public meeting was held on September 18, 1995 to inform the public what had been found during the RI field work, what data gaps still remained.
A third public meeting was held on November 16, 1999. At that meeting, the public was informed of the cleanup activity that was conducted as part of Superfund's removal action. The public was also informed of EPA's decision to complete a Feasibility Study, and what the next steps in the remedial process would be.
On July 20, 2000, a fourth public meeting was held to present to the public the proposed plan for remedial action at the Site. As with the first three meetings, the meeting was held at the Harrison Central School, 9th Grade library, due to its proximity to the Site. Three representatives from EPA attended the meeting and answered questions regarding the Site and the proposed plan.
The public notice for this meeting was published in the Biloxi Sun-Herald on July 18, 2000. The public comment period on the proposed plan was July 5 through August 8. . Responses to significant comments made during the July 20, 2000 public meeting, along with new relevant information received, are included in the Responsiveness Summary of the 2002 Record of Decision. No other written or oral comments were received during the public comment period.
In 2011, EPA issued an amended Proposed Plan as part of the process to modify the remedy. The MDEQ reviewed and concurred with the remedy described in the Proposed Plan for this amended remedial action prior to it being released for public comment. EPA published a notice of availability for the Proposed Plan in the Biloxi Sun-Herald newspaper and provided the public an opportunity to provide EPA written and oral comments from October 1 to October 31, 2011. No comments were received. The public was also given the opportunity to comment during the public meeting held on October 13, 2011 at the Crossroads Elementary School library, 10453 Klein Road, Gulfport, MS. Comments from this public meeting are also included in the Responsiveness Summary of the 2013 ROD Amendment. A copy of the transcript of that public meeting is available to the public as part of the Administrative Record (AR).The AR is available to the public, at both the information repository maintained at the Orange Grove Public Library, formerly located at 12031 Mobile Avenue and now located at 12135 Old Highway 49, Gulfport, Mississippi, and at the EPA Region 4 Library located at 61 Forsyth St., S.W., in Atlanta, Georgia.
- Fact Sheet, October 2012 (PDF) (2pgs, 36.60K, About PDF)
- Reuse Fact Sheet, July 2011 (PDF) (1 pg, 915.78K, About PDF)
- Amended Proposed Cleanup Plan (PDF) (15pgs, 2.65MBm About PDF)
Once the EPA and the State of Mississippi have concluded enforcement negotiations, a Remedial Design/Remedial Action (RD/RA) Work Plan will be prepared for EPA review and approval. The RD/RA Work Plan will detail how the remedial action described in the 2013 ROD Amendment will be performed. EPA will notify the community before the cleanup activities begin.
For more information or to view any site-related documents, please visit the site information repository at the following location or access site information online. As new documents are generated, they will be placed in the information repository.
The Orange Grove Public Library
12135 Old Highway 49
Gulfport, Mississippi 39503
For documents that are not available online, please contact the Region 4 Freedom of Information Office.