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San Jacinto River Waste Pits Superfund Site

Current Status

EPA, in cooperation with the Texas Commission on Environmental Quality (TCEQ), invites you to attend an informational meeting for the San Jacinto River Waste Pits Superfund site Tuesday, January 30 from 5:30-7:30 pm at the Galveston County Courthouse. This meeting will provide you with the opportunity to hear information about the San Jacinto site and to ask questions. The information will include discussions of the selected remedy, history of the armor cap, and future activities.

The courthouse is located at 722 Moody Avenue (21st Street), Galveston, Texas 77550. Please contact EPA Community Involvement/ Janetta Coats at 1.800.533.3508 (toll free) with any questions about the facility or access to the meeting.
San Jacinto Waste Pits area

EPA Cleanup Plan

 On October 11, the cleanup plan to address highly toxic dioxin contamination at the San Jacinto Waste Pits Superfund site in Harris County, Texas was approved. The selected remedy will protect human health and the environment by removing highly contaminated material from the site and securing less contaminated areas. The plan provides certainty to people living near the site by permanently addressing risk posed by the contamination. It also provides certainty to other economic interests including the businesses that rely on the San Jacinto River for navigation and the Interstate-10 transportation corridor. EPA’s cleanup plan includes installing engineering controls such as cofferdams before excavating almost 212,000 cubic yards of dioxin contaminated material for disposal. A small amount of material will stay on the site where controls will prevent access, eliminate off-site migration and monitor the natural recovery into the future. The estimated cost for the remedy is $115 million and is cost-effective; representing a reasonable value for the cost incurred. EPA’s final cleanup plan, called a Record of Decision, addresses comments on the proposed plan concerning the risk of water spreading dioxin contamination downstream by installing controls such as cofferdams to allow for dry excavation of the waste material. Changes in the construction method will effectively eliminate any potential for spreading contamination to downstream areas. The $97 million proposed plan outlined wet excavation of material. EPA’s decision, fully explained in the Record of Decision, is based on extensive studies of the contamination, human health risks, and environmental risks of this site. The final cleanup plan considers the ever-changing San Jacinto River, which encroaches on the site, and protecting important downstream resources including the Galveston Bay estuary. EPA’s selected remedy will permanently address the highly toxic dioxin waste materials, meets the federal regulatory requirements of the National Contingency Plan for cleanup of hazardous sites, and is protective of public health and the environment. EPA will release an Administrative Record, which consists of all documents used to support its selected remedy.  

The Record of Decision (10/11/2017,  15.8 MB, 457 pages) is available. The Administrative Record for the San Jacinto River Waste Pits Superfund Site is also available. Copies of the Administrative Record including the Record of Decision will also be at the following locations:  

Stratford Branch Library
509 Stratford Street
Highlands, Texas, 77562

U.S. Environmental Protection Agency Region 6
1445 Ross Avenue
Dallas, TX 75202

(214) 665-6427

National Priorities Listing (NPL) History

Proposal Date: 9/17/2007
Final Listing Date: 3/19/2008

Community Engagement

More information about the site:

For more information, contact EPA Community Involvement at 1-800-533-3508 (toll-free).

Aerial view of San Jacinto cap.Aerial view of San Jacinto cap.

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