D-Area Treatment Trench (DTT-1) Evaluation

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A limestone trench was installed adjacent to the D-Area Coal Pile Runoff Basin (DCPRB) on May 4, 1999. Since limestone is considered the most likely amendment to produce the optimal pH range for sulfate reduction in the D-Area low pH/metals/sulfate plume (Phifer, et al. 2001), the existing limestone trench has undergone a re-evaluation. The re-evaluation has been conducted to determine if the hydraulic and geochemical activity of the limestone trench is similar to its initial conditions upon installation and to determine the potential to promote sulfate reduction at the limestone trench with the addition of an organic carbon substrate. The ... continued below

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Phifer, M.A. June 25, 2003.

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Description

A limestone trench was installed adjacent to the D-Area Coal Pile Runoff Basin (DCPRB) on May 4, 1999. Since limestone is considered the most likely amendment to produce the optimal pH range for sulfate reduction in the D-Area low pH/metals/sulfate plume (Phifer, et al. 2001), the existing limestone trench has undergone a re-evaluation. The re-evaluation has been conducted to determine if the hydraulic and geochemical activity of the limestone trench is similar to its initial conditions upon installation and to determine the potential to promote sulfate reduction at the limestone trench with the addition of an organic carbon substrate. The results of the re-evaluation indicate that the limestone trench is essentially as hydraulically active now as it was at its installation. Additionally it has been determined that the limestone trench remains an effective treatment for increasing the pH and removing aluminum as at its installation. Finally it has been determined that the limestone trench has increased sulfate reducing bacteria (SRB) activity and has in general improved conditions relative to optimal sulfate reduction conditions. Based upon this re-evaluation it has been determined that limestone could potentially be a viable component of an in-situ sulfate reduction remediation system, and the addition of soybean oil downgradient of the limestone trench should result in successful sulfate reduction remediation.

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  • Other Information: PBD: 25 Jun 2003

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  • Report No.: WSRC-TR-2003-00133
  • Grant Number: AC09-96SR18500
  • DOI: 10.2172/812130 | External Link
  • Office of Scientific & Technical Information Report Number: 812130
  • Archival Resource Key: ark:/67531/metadc733679

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Office of Scientific & Technical Information Technical Reports

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Creation Date

  • June 25, 2003

Added to The UNT Digital Library

  • Oct. 18, 2015, 6:40 p.m.

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  • May 5, 2016, 3:21 p.m.

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Phifer, M.A. D-Area Treatment Trench (DTT-1) Evaluation, report, June 25, 2003; South Carolina. (digital.library.unt.edu/ark:/67531/metadc733679/: accessed October 20, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.