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Project

Pipeline Release Spill Response and Remediation

Client: NuStar Logistics
Location: Three Rivers, Texas
Project:

Site Description

A 3000 barrel gasoline release from a pipeline occurred in September 2013 near Three Rivers, Texas, in Live Oak County. The client’s objective was to remove all impacted soil to avoid possible long-term liabilities.  The work is being completed with the assistance of an insurance policy.  W&M has assisted the client with the development of an excavation and sampling strategy, negotiating rates with disposal facilities,  oversight of soil removal, and transportation of over 100,000 cubic yards of impacted material off-site for disposal, confirmation sampling, and coordination with the state regulatory agency and the client’s insurance carrier.

Project Details

The soil removal activities include field screening of excavated soil to facilitate the segregation of impacted material and clean overburden. Impacted soils were also segregated by Class 1 and Class 2 non-hazardous waste to help control costs.  Confirmation samples were collected on a 40-foot grid from the side walls and floor of the excavation.  W&M coordinated with the local electric utility to relocate support structures for an overhead electric transmission line that crossed the excavation area.  In addition, two pipelines were temporarily relocated to allow for the excavation of impacted soil to a depth of 20 feet along approximately 1000 feet of pipeline right-of-way (ROW).  W&M subcontracted the testing of compacted soil that was placed back in the pipeline ROW.  W&M also assisted in the procurement and testing of suitable fill for the project.

W&M Solutions

W&M assisted NuStar in remediating the pipeline spill in a timely and cost effective manner. Great care was used to limit total soil removed, and to classify the soil accurately for disposal without mixing more heavily impacted soils.  It is anticipated that closure under the TCEQ Texas Risk Reduction Program will be achieved in 2015 with no post-closure care requirements.  The site will be restored to the satisfaction of the landowner as negotiated by the client.

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