Hoover Treated Wood Products Inc.
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EPA Project Manager
U.S. Environmental Protection Agency Region 3
1650 Arch Street MS 3LC20
Philadelphia, PA 19103-2029
DEQ Project Manager
Tara D. Mason
Corrective Action Project Manager
Office of Remediation Programs
Virginia Department of Environmental Quality
629 E. Main St. Richmond VA 23219
- Hoover Treated Wood Products, Inc. (Hoover) completed a focused Corrective Measures Study (CMS) in May 2014 that evaluated their existing groundwater recovery system as the proposed final remedy to contain arsenic contaminants in groundwater on-site and decrease concentrations of arsenic site-wide. In addition, the CMS evaluated arsenic in surface water and sediment in the unnamed tributary located north of the facility and in the surface water feature to the south of the facility.
- The CMS concluded that the groundwater recovery system effectively maintains control and stability of the contaminated groundwater and has decreased concentrations of arsenic since operation began in 2002. In addition, arsenic was not observed above protective levels in surface water and arsenic observed in sediment on the south side of the facility was observed at levels that are not likely to pose an adverse risk to the environment based on the information provided. It is anticipated that since arsenic is contained on-site, arsenic concentrations in sediment will attenuate over time.
- Hoover’s proposed final remedy will be implemented under the facility’s existing Hazardous Waste Management Permit for Post-Closure Care and Site-Wide Corrective Action. The proposed final remedy will be incorporated into the Permit in 2016 during their Permit renewal process, which includes a public comment period. The proposed remedy will include semi-annual groundwater monitoring in addition to groundwater recovery system operation.
- The Hoover facility occupies approximately 64 acres of property located in Milford, Virginia. The facility lies within the Mattaponi River Basin, approximately one mile east of the Mattaponi River and is bound on the north by a low-lying marshy intermittent drainage way and on the south by tidal wetlands.
- Hoover produces pressure treated wood products using a chromate copper arsenate (CCA) solution and other wood treating solutions as well as interior and exterior fire retardants. Historically, residual preservative materials were applied to the facility’s land after being mixed with a stabilizing agent.
- Building One, located on the northwest portion of the Hoover facility, was the location where residual wood preservative materials were treated, temporarily stored, and stabilized. Based on approved closure activities, clean closure of Building One, its contents, and the underlying unsaturated soils was successfully completed on December 1, 1999.
- Area A, located on the northeast portion of the Hoover facility, was the location where the stabilized residual wood preservative materials were deposited. Based on approved closure activities, clean closure of unsaturated soils in Area A was successfully completed on December 1, 1999. However, clean closure of the groundwater could not be achieved. Therefore, the post-closure care period for Area A shall continue until December 1, 2029. Subsequently, on December 15, 2005, a Post-Closure Care Permit (Permit) for Area A including provisions for RCRA Site-wide Corrective Action was issued to Hoover by DEQ.
- In 2002, Hoover installed a groundwater recovery system to decrease concentrations of arsenic in groundwater on-site. Recovery wells were installed at Area A and at the southern portion of the property.
- On July 18, 2006, DEQ completed an evaluation of available information and issued a “YES” determination for the “Migration of Contaminated Groundwater Under Control” Environmental Indicator (EI) in accordance with the Government Performance and Results Act (GPRA).
- On September 12, 2009, DEQ completed an evaluation of available information and issued a “YES” determination for the “Current Human Exposures Under Control” EI in accordance with the GPRA.
- On June 5, 2012, Hoover submitted a RCRA Facility Investigation (RFI) Phase II Report. DEQ approved the RFI Report on August 3, 2012 and required Hoover to perform a CMS.
- In May 2014, DEQ approved Hoover’s CMS. Hoover will continue to operate its groundwater recovery system and perform semi-annual groundwater monitoring as its proposed final remedy under Corrective Action to achieve corrective action objectives.
- Contaminants include arsenic in groundwater site-wide with lesser concentrations of other inorganics at Area A.
- No impacts to air and surface water have been identified during the environmental investigations and contaminants observed in soil at Area A were removed during unit closure. No other impacts to soil were identified during the RFI process.
- Arsenic was observed in sediment to the south of the facility. However the levels observed are not likely to pose an adverse risk to the environment. Since arsenic in groundwater is contained on-site, it’s anticipated that arsenic observed in sediment will attenuate over time.
- Some of the site’s key documents of interest are accessible below:
- Corrective Action Statement of Basis [15 pp, 107 KB, About PDF]
- RCRA Hazardous Waste Permit [3 pp, 36 KB, About PDF]
- Environmental Indicator Determination - Human Exposures [12 pp, 285 KB, About PDF]
- Environmental Indicator Determination - Groundwater Migration [10 pp, 303 KB, About PDF]
- All documents and reports regarding this facility also can be reviewed in person at these locations:
Virginia Department of Environmental Quality
P.O. Box 1105
Richmond, VA 23218
Phone: (804) 698-4219
U.S. EPA Region III
Land & Chemicals Division - RCRA
1650 Arch Street-11th Floor
Philadelphia, PA 19103
Call for an appointment.
- Submit a FOIA Request
Get instructions on how to submit a FOIA request. Additional fee for requests over 100 pages.
|Hoover Treated Wood Products Inc.||Hoover Treated Wood Products Site Map [1 page, 195 KB, About PDF]|
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- This property is a continued use property.
- The DEQ and EPA are dedicated to providing with timely and accurate information about our work at this site. If you have any questions or concerns, please contact VA DEQ Project Manager tara Mason at (804) 698-4218 or EPA Project Manager Mike Jacobi at (215) 814-3435.