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Title: Source and plume investigation of chlorinated compounds in groundwater at a chemical plant

Abstract

A site assessment was conducted to determine the distribution of chlorinated compounds in soil and groundwater at a chemical plant in Geismar, Louisiana. The assessment first included an investigation of the source(S) of the contaminants using aerial photos, interviews and plant records. Next, the stratigraphic framework of the site was defined with a hydrogeological investigation using historic borin logs and cone penetrometer testing (CPT). Finally, a plume investigation was performed to determine the horizontal and vertical extent of the contamination using direct-push methods for sampling of soil and groundwater. It was determined that chlorinated compounds originated from leaking drums and cleaning operations prior to 1975. Downward migration of these compounds may have been promoted by the installation of uncased 50-foot wooden pillings. The contamination is limited both vertical and horizontally, to three hydrogeologic zones: (1) the first water-bearing silt zone; (2) an intermediate zone consisting of interlayered silt and clay; and (3) the second water-bearing silt zone. The concentration of chlorinated compounds are greatest in the intermediate zone. There is some evidence of natural degradation of the chlorinated compounds, particularly in the first water-bearing zone.

Authors:
 [1]
  1. PSI, Inc., Baton Rouge, LA (United States)
Publication Date:
OSTI Identifier:
150579
Report Number(s):
CONF-9510222-
Journal ID: AABUD2; ISSN 0149-1423; TRN: 95:007541-0052
Resource Type:
Journal Article
Journal Name:
AAPG Bulletin
Additional Journal Information:
Journal Volume: 79; Journal Issue: 10; Conference: American Association of Petroleum Geologists (AAGS) Gulf Coast Section meeting, Baton Rouge, LA (United States), 25-27 Oct 1995; Other Information: PBD: Oct 1995
Country of Publication:
United States
Language:
English
Subject:
54 ENVIRONMENTAL SCIENCES; GROUND WATER; PLUMES; REMEDIAL ACTION; ENVIRONMENTAL TRANSPORT; ORGANIC CHLORINE COMPOUNDS; ECOLOGICAL CONCENTRATION; LOUISIANA; CHEMICAL PLANTS

Citation Formats

Trahan, D B. Source and plume investigation of chlorinated compounds in groundwater at a chemical plant. United States: N. p., 1995. Web.
Trahan, D B. Source and plume investigation of chlorinated compounds in groundwater at a chemical plant. United States.
Trahan, D B. 1995. "Source and plume investigation of chlorinated compounds in groundwater at a chemical plant". United States.
@article{osti_150579,
title = {Source and plume investigation of chlorinated compounds in groundwater at a chemical plant},
author = {Trahan, D B},
abstractNote = {A site assessment was conducted to determine the distribution of chlorinated compounds in soil and groundwater at a chemical plant in Geismar, Louisiana. The assessment first included an investigation of the source(S) of the contaminants using aerial photos, interviews and plant records. Next, the stratigraphic framework of the site was defined with a hydrogeological investigation using historic borin logs and cone penetrometer testing (CPT). Finally, a plume investigation was performed to determine the horizontal and vertical extent of the contamination using direct-push methods for sampling of soil and groundwater. It was determined that chlorinated compounds originated from leaking drums and cleaning operations prior to 1975. Downward migration of these compounds may have been promoted by the installation of uncased 50-foot wooden pillings. The contamination is limited both vertical and horizontally, to three hydrogeologic zones: (1) the first water-bearing silt zone; (2) an intermediate zone consisting of interlayered silt and clay; and (3) the second water-bearing silt zone. The concentration of chlorinated compounds are greatest in the intermediate zone. There is some evidence of natural degradation of the chlorinated compounds, particularly in the first water-bearing zone.},
doi = {},
url = {https://www.osti.gov/biblio/150579}, journal = {AAPG Bulletin},
number = 10,
volume = 79,
place = {United States},
year = {Sun Oct 01 00:00:00 EDT 1995},
month = {Sun Oct 01 00:00:00 EDT 1995}
}