Use of cone penetrometer tests for profiling a volatile organic compound source area
- Roux Associates, Inc., Denver, CO (United States)
Characterization and delineation of a source of volatile organic compounds (VOCs) detected in a ground water plume was performed using a cone penetrometer test (CPT) rig equipped with a drive point ground water sampling system. Previous attempts to delineate the source area using a soil gas survey, borings and soil analyses were not successful. The VOCs were apparently released at the surface of a 45-foot thick interlayered sand and clay alluvium overlying a limestone aquifer. Depth to ground water was approximately 25 feet below ground surface. Lithologic data and ground water samples were collected with the CPT rig along five sampling lines located parallel or perpendicular to the direction of ground water flow. The high resolution lithologic data obtained at each sampling point delineated transition zones from coarse grained to clay soils. Ground water samples were collected from the coarse-grained to clay soils. Ground water samples were collected from the coarse-grained saturated zones. Expedited analyses of ground water samples and on-site development of geologic cross-sections helped determine the locations of additional sampling locations. Twenty-four CPT soundings and 31 ground water samples were required to delineate the lithology and distribution of VOCs in four distinct source areas. The CPT sounding and sampling technique for the source area investigation produced high resolution hydrogeologic and ground water analytical data on a rapid (8 to 12 hour) turnaround basis. The cost of the program was approximately one-half of a traditional boring, monitoring well installation, sampling and analyses program. In addition, soil cuttings, well development or purge water were not produced.
- OSTI ID:
- 491048
- Report Number(s):
- CONF-9406250-; TRN: IM9729%%299
- Resource Relation:
- Conference: 9. Annual conference on hazardous waste remediation, Bozeman, MT (United States), 8-10 Jun 1994; Other Information: PBD: 1994; Related Information: Is Part Of Proceedings of the 9. annual conference on hazardous waste remediation; Erickson, L.E.; Tillison, D.L.; Grant, S.C.; McDonald, J.P. [eds.]; PB: 389 p.
- Country of Publication:
- United States
- Language:
- English
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