Using weir technology as an investigative and remediation tool in the cleanup of a bedrock aquifer system contaminated with chlorinated VOCs: A case study

Conference · · Ground Water; (United States)

OSTI ID:6839211

Nocton, S A ^[1]

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1. Capsule Environmental Engineering Inc., St. Paul, MN (United States)

This paper details the use and effectiveness of weirs in the investigation and remediation of a bedrock aquifer contaminated with chlorinated volatile organic compounds (VOCs) at a manufacturing facility located in North Carolina. Weirs were used to augment the investigation and aid in the design of a recovery system to remediate contaminated ground water. During the investigative phase, data generated from weirs was used in conjunction with a two-dimensional, analytical flow model to model the effect of the stream on contaminant migration and hydrogeologic conditions. Two V-notch weirs were installed upstream and downstream from the contaminant plume and outfitted with open channel flow meters and automatic water samplers. Additional weir data was then used in a second model to determine the optimum number, locations, and pumping rates of recovery wells necessary to fully capture the contaminant plume. A complete remedial system was then designed and installed based on the results of the modeling and field investigation. The resulting system had an effective radius sufficient for complete plume capture and proved effective at stopping the discharge of contaminants to the stream.

• OSTI ID: 6839211
• Report Number(s): CONF-9410209--
• Conference Information: Journal Name: Ground Water; (United States) Journal Volume: 32:5
• Country of Publication: United States
• Language: English

Related Subjects

54 ENVIRONMENTAL SCIENCES
540250* -- Environment
Terrestrial-- Site Resource & Use Studies-- (1990-)
AQUIFERS
CLEANING
DECONTAMINATION
DEVELOPED COUNTRIES
GROUND WATER
HYDROGEN COMPOUNDS
NORTH AMERICA
NORTH CAROLINA
ORGANIC COMPOUNDS
OXYGEN COMPOUNDS
REMEDIAL ACTION
REMOVAL
TECHNOLOGY ASSESSMENT
USA
WATER
WATER RECLAMATION