|AGENCY||Texas Commission on Environmental Quality|
Public Notice of Intent to Delete
The executive director (ED) of the Texas Natural Resource Conservation Commission (TNRCC or commission) is issuing a Public Notice of Intent to Delete the Sampson Horrice state Superfund Site (the site) from the state registry, the list of state Superfund sites which may constitute an imminent and substantial endangerment to public health and safety or the environment due to a release or threatened release of hazardous substances into the environment. The commission is proposing this deletion because the ED has determined that the site no longer presents such an endangerment, due to the removal action that has been performed at the site.
The site, including all land, structures, appurtenances, and other improvements, is a former gravel pit located in a residential and industrial area at 2000 and 2006 Plainfield Drive in Dallas, Dallas County, Texas. Drums of solid and hazardous wastes were accepted at the site, in late 1983 or early 1984. The TNRCC scored the site under the Hazard Ranking System (HRS). The site received a HRS score of 9.37, and was proposed for listing on the Texas registry of state Superfund sites on November 15, 1996. The site was then investigated under the state Superfund Program from July 1999 through August 2000. The investigation revealed that the constituents of concern (COCs) at the site include benzene, toluene, ethyl benzene, xylene, total petroleum hydrocarbons, lead, mercury, chromium, dieldrin, aldrin, and DDT. Concurrent with the remedial investigation, a removal action was performed at the site.
A removal action began in August 1999, that included excavation, sampling, and removal of 349 drums and 200 yards of impacted soil. Verification samples were collected at the completion of the removal activities and confirmed that the remaining soils were below the TNRCC Risk Reduction Standard 2 residential standards for the COCs at the site. The excavation was then filled with surrounding clean soils, completing the removal action in January 2000.
In April 2001, the TNRCC completed a risk evaluation report, which included both a human health risk assessment and an ecological assessment. Based on these assessments, the site no longer poses an unacceptable risk to human health or the environment. A complete discussion of the risk evaluation can be found in the Baseline Risk Evaluation Report, Sampson Horrice Proposed State Superfund Site, April 2001.
In accordance with Title 30 Texas Administrative Code (TAC) §350.53, the TNRCC determined that the appropriate land use for the site is residential. Therefore, the cleanup levels for the site were based on a residential land use criteria.
As a result of the removal action, remedial investigation, risk evaluation, and land use determination described above, the ED has determined that the site no longer presents an imminent and substantial endangerment to the public health and safety and the environment. Therefore, the site is eligible for deletion from the State Registry as provided by 30 TAC §335.344(c).
In accordance with 30 TAC §335.344(b) the TNRCC will hold a public meeting to receive comments on this proposed deletion. This meeting will not be a contested case hearing within the meaning of Texas Government Code, Chapter 2001. The meeting is structured for receipt of oral or written comments by interested persons. The meeting will be held on Tuesday, December 4, 2001 at 7:00 p.m. at the Nancy Moseley Elementary School Auditorium, 10400 Rylie Road, Dallas, Texas, and will consist of two parts; an informal discussion period and a formal comment period.
All persons desiring to make comments regarding the proposed deletion of the site may do so prior to or at the public meeting. All comments submitted prior to the public meeting must be received by 5:00 p.m. December 4, 2001, and should be sent in writing to Mr. Dean Perkins, Project Manager, TNRCC, Superfund Cleanup Section, Remediation Division, MC-143, P. O. Box 13087, Austin, Texas 78711-3087 or faxed to the attention of Mr. Dean Perkins at (512) 239-2449. The public comment period for this action will end at the close of the public meeting on December 4, 2001.
A portion of the record for the site including documents pertinent to the ED's proposed deletion are available for review during regular business hours at the Pleasant Grove Branch Library, 1125 South Buckner Blvd., Dallas, Texas 75217, telephone (214) 670-0965. The complete public file may be obtained during regular business hours at TNRCC's Records Management Center, Building D, North Entrance, Room 190, 12100 Park 35 Circle, Austin, Texas 78753, telephone numbers 1-800-633-9363 or (512) 239-2920. Fees are charged for photocopying file information.
Director, Environmental Law Division
Texas Natural Resource Conservation Commission
Filed: October 22, 2001
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