ARCHIVED REPORTS XR0001684 - Laserfiche WebLink

Home Browse Search

i 4 ` Cone Penetrometer Testing Report - December 2001 ' Geweke Land Development & Marketing 16 South Cherokee Lane, Lodi, California ' 1.0. INTRODUCTION AND SCOPE OF WORK At the request of Mr Dale Gillespie of Gcweke Land Development &-Marketing (GLDM), and in - T accordance with Cleanup and Abatement Order No 93-701, Advanced GeoEnvironmental, Inc (AGE), has prepared the enclosed cone penetrometer testing (CPT) report for 16 South Cherokee Lane, Lodi, California The report documents procedures and results for a subsurface investigation conducted at the site during December 2001 The site setting is illustrated on Figure 1 Site structures, boring, monitoring well and CPT locations are depicted on Figures 1 and 2 ' The objective of the CPT investigation was to characterize and assess petroleum hydrocarbons in ground water and to characterize stratigraphy at the site This report is prepared in accordance with ' guidelines established by the Central Valley Regional Water Quality Control Board(CVRWQCB) for investigation of underground storage tank(UST) sites A summary of previous investigations at the site and background information was included in the AGE-prepared Additional Site Assessment tWork Plan - September 2001, dated 24 September 2001 2.0. PROCEDURES On 18, 19 and 20 December 2001, two soil borings(CPT-i and CPT-2)were advanced on-site and ' one soil boring (CPT-3) was advanced off-site (121 Cherokee Lane) utilizing CPT technology to model the geological and hydro-geological framework and to assess potential dissolved petroleum-migration pathways beneath the site Lithologic data was collected from an initial CPT soil boring A twin boring was then advanced immediately adjacent to the initial boring to collect grab ground water samples from selected depths The CPT borings were advanced utilizing a 25-ton CPT truck Boring logs are presented in Appendix A, a site plan depicting the boring locations are presented in Figure 1 21 CPT LITHOLOGIC INVESTIGATION Soil borings CPT-1 and CPT-3 were advanced vertically to maximum depths of 140 feet below surface grade(bsg) and boring CPT-2 was advanced vertically to a maximum depth of 142 feet bsg utilizing a 25-ton truck-mounted CPT drill ng equipped with 1 50-inch diameter hollow-stem rods I A hydraulic ram was utilized for the CPT soil borings to advance a cone penetrometer tip to total depths of the soil borings Soil parameters such as cone penetrometer tip resistance, sleeve friction, faction ratio (ratio between sleeve friction and tip resistance) and pore water pressure were continuously measured as the cone penetrometer was advanced to depth A continuous boring log • was generated utilizing the Hogentogler Co CPT computer program The Hogentogler Co computer program utilized the CPT Soil Behavior Classification System (Robertson, P K , Campanella, R G, A Advanced GcoEnvironmental,Inc , r