Resources: Papers/Abstracts/Links



	ARCTIC PENETRATION TEST SYSTEMS Andrew I. Strutynsky, Bruce J. Douglas, A.M.ASCE, Larry J. Mahar, A.M.ASCE, George F. Edmonds, and Eugene Hencey ABSTRACT: Geotechnical exploration in offshore arctic regions relies upon the electric Cone Penetrometer Test (CPT) because of its speed, economy, data continuity, and general reliability. By adding additional sensors to the basic CPT, simultaneous multichannel data acquisition including pore pressure, temperature, and electrical conductivity, has allowed more detailed characterization of in situ conditions than is usually possible. Descriptions of some of these new sensors and typical data obtained with them are presented in this paper.



	USE OF PIEZOMETRIC CONE PENETRATION TESTING AND PENETROMETER GROUNDWATER SAMPLING FOR VOLATILE ORGANIC CONTAMINANT PLUME DETECTION Andrew I. Strutynsky, P.E., STRATIGRAPHICS, Inc., Glen Ellyn, Illinois Timothy J. Sainey, P.G., ERM-Midwest, Inc., Columbus, Ohio ABSTRACT: Piezometric Cone Penetration Testing (CPTU) and penetrometer groundwater sampling were used in locating a volatile organic contaminant plume at an industrial site in southern Ohio. Nine CPTU tests (soundings) were performed to determine site hydrostratigraphy in real-time. On-site chemical analysis of penetrometer groundwater samples provided near real-time detection of contaminants. These results were used to define subsequent exploration points. Using this investigation approach, drilling operations to set monitor wells began as penetrometer exploration ended. Program quality increased, while exploration costs decreased by using this combination penetrometer-drilling rig approach.



	BRINE PLUME MAPPING USING CONE PENETROMETER AND GEOPHYSICAL METHODS Andrew I. Strutynsky STRATIGRAPHICS, Inc. Robert A. Glaccum Geosphere Linda C. Conklin RADIAN International LLC ABSTRACT: Naturally occurring brines (concentrated solutions of chloride salt and water) are pumped from deep wells and are transmitted by pipeline to industrial processing facilities. An accidental brine release affected shallow groundwater quality at a site in Michigan. The chloride brine plume was delineated using non-intrusive surface geophysical, minimally intrusive cone penetrometer, and downhole geophysical methods. Surface electromagnetic surveys were used to map the areal extent of the plume. Direct push cone penetrometer soundings with soil electrical conductivity measurements were used to profile stratigraphy and detect electrical conductivity anomalies associated with brine intrusions. Anomalous zones were sampled, using penetrometer groundwater sampling, for direct chemical analysis. Geophysical monitoring stations were then installed in boreholes to allow periodic monitoring of the plume's response to remediation.



	MUNICIPAL GROUNDWATER DRINKING SUPPLY PROTECTION USING CONE PENETROMETER EXPLORATION METHODS Andrew I. Strutynsky STRATIGRAPHICS, Glen Ellyn, Illinois Kay Gilmer, Chris Osborne, and Jason Romp Ohio Environmental Protection Agency, South Eastern District Office, Logan, Ohio Rick Darr Lawhon and Associates, Columbus, Ohio ABSTRACT: The Ohio Environmental Protection Agency (OEPA) has the responsibility to oversee public water systems in Ohio. When chlorinated solvents were detected in the municipal wellfield of Bridgeport, OEPA decided to try cone penetrometer exploration methods to study the problem. Penetrometer stratigraphic profiling, with groundwater, soil and soil gas sampling, and field GC/MS chemical analysis, were used to map the plume impinging on the wellfield, and locate the source of the plume. This method was then applied to studies of contaminant plumes affecting the wellfields of Coal Grove and the Belmont County Sanitary Sewer District #3, among others. This paper will present penetrometer equipment descriptions, exploration program philosophy, and short case histories of these investigations.



	USE OF PIEZOMETRIC CONE PENETRATION TESTING WITH ELECTRICAL CONDUCTIVITY MEASUREMENTS (CPTU-EC) FOR THE DETECTION OF HYDROCARBON CONTAMINATION IN SATURATED GRANULAR SOILS Andrew I. Strutynsky, Raymond E. Sandiford, and Dennis Cavaliere ABSTRACT: Piezometric Cone Penetration Testing with soil Electrical Conductivity measurements (CPTU-EC) was used for the detection of hydrocarbon saturated granular soils at two airport fuel storage areas. Details of the CPTU-EC equipment and site subsurface conditions are provided. Test program phases, including laboratory testing, field in situ testing and CPTU-EC data interpretation are described. Comparisons are made between CPTU-EC and adjacent monitor well data. Limitations to the CPTU-EC method are discussed.



	EVALUATION OF THE CONE PENETROMETER TEST FOR SPT-LIQUEFACTION ASSESSMENT By Bruce J. Douglas¹, A. M. ASCE Richard S. Olsen², M. ASCE, and Geoffrey R. Martin³ M. ASCE ¹Project Engineer, Ertec Western Inc. ²Staff Engineer, Ertec Western Inc. ³Vice President, Engineering, Ertec Western, Inc.