Rapid characterization of a chromium/trichloroethene plume using several real-time sampling and analysis technologies
- RMT Inc., Madison, WI (United States)
An industrial facility located in the midwestern US began chrome-plating and degrading operations in 1941. Ground water contamination was recognized in August 1993. The extent of TCE plume was found to be approximately 5,000 feet long, 400 feet wide, and 70 feet thick. The chromium plume was much narrower (approximately 100 feet) and shorter (less than 3,000 feet). Ground water flow rate was on the order of 200 to 300 feet per year. Within 18 months (March 1995), site characterization was sufficiently complete for the construction of an on-site interim ground remedial action and the development of a Remedial Action Plan for remediation of the off-site plume. The investigation, remedial construction, and project management used an expedited approach that integrated rapid sampling, in-field analyses for Cr and TCE, a flexible work-plan, and investigator-owner-regulator communication to delineate the contaminant plumes quickly, cost-effectively, and with minimum disruption to facility operations and minimum disturbance to neighboring properties. Project objectives and equipment availability resulted in the use of four investigation technologies: hollow-stem augers with split-spoon and Hydropunch{reg_sign} sampling, Geoprobe{reg_sign}, and Waterloo (Ingleton) Groundwater Profiler were used to advance 41 borings, and 19 monitoring wells were installed at 10 locations. In-field analyses were completed with portable gas chromatography for VOCs and by wet-chemistry techniques for chromium. The presentation will describe the key features of the project`s expedited approach, specifically focusing on how the schedule and costs were minimized. The use of the four investigation techniques will also be evaluated with respect to strengths and weaknesses, overall performance, and cost-effectiveness.
- OSTI ID:
- 122459
- Report Number(s):
- CONF-9510211-; ISSN 0017-467X; TRN: IM9547%%39
- Journal Information:
- Ground Water, Vol. 33, Issue 5; Conference: 1995 Association of Ground Water Scientists & Engineers (AGWSE) educational program, Indianapolis, IN (United States), 28-30 Oct 1995; Other Information: PBD: Sep-Oct 1995
- Country of Publication:
- United States
- Language:
- English
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