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1994 Edition, January 1, 1994

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Treatment of Gasoline-Contaminated Groundwater Through Surface Application Part II - A Prototype Field Investigation

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Product Details:

  • Revision: 1994 Edition, January 1, 1994
  • Published Date: August 1994
  • Status: Not Active, See comments below
  • Document Language: English
  • Published By: American Petroleum Institute (API)
  • Page Count: 142
  • ANSI Approved: No
  • DoD Adopted: No

Description / Abstract:


The objectives of this study were to:

• determine if the rate and controls of BTEX biotransformation determined in the laboratory and field column studies prevailed under field conditions; and,

• investigate under field-scale conditions the feasibility of surface application for treating groundwater containing low levels of dissolved BTEX.

Application of the highest water flux, while still achieving acceptable removals of BTEX within the unsaturated zone, will make optimum use of the available land area and application equipment. This study, therefore, attempts to define this optimum water flux within a controlled range of BTEX concentrations. This study contrasts with the API (1989) approach, in which BTEX concentrations to a field column were varied but a constant water flux was maintained.

While BTEX-contaminated water was continuously applied uniformly across a 5 m × 5 m site, BTEX concentrations in unsaturated-zone gas samples and shallow groundwater samples were measured. Five tests were conducted, differing with respect to one or more of the following parameters: applied water flux; applied BTEX concentration; supplemental nitrogen; and soil and air temperatures. The extent of remediation was determined from BTEX concentrations in the applied water relative to those measured in soil gas and groundwater.