ARCHIVED REPORTS XR0012551 - Laserfiche WebLink

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�x �':._ s-p, � hg3 .a.�.ate �,,• _ I i=a 1.0 INTRODUCTION This report describes the procedures and presents the results of cone penetration testing (CP11 and BAT groundwater sampling conducted at Chraron Station No.94275,2975 Benjamin Holt Drive,Stockton, California. The objectives of this investigation N:ere: (i) demonstrate the ability of the CPT to characterize the site geology and hydrogeology, and (ii) demonstrate the accuracy of the CPT-installed BAT sampling system relative to the California Code of Regulations (CCR) Title 23 groundwater monitor,sg well samples. The field work was performed on March 11 and 12, and October 21, 1991. The equipment and procedures used are described in Section 20. Section 3.0 describes the CPT data interpretation methodology. Section 4.0 presents the results of the CPT and BAT testing and sampling program. CPT data logs are contained in Appendix A. In corjuricf on with the CPT and BAT Sampling Program~,monitoring wells onsite were sampled according fo standard protocol to assess the potential use of the BAT system for long term monitoring. Discussion of the monitoring well construction and installation, the sampling techniques and analytical methods are beyond the slope of this report. However, the general analytical results for the BAT system and for the monitoring wells are discussed in Section 4.0 and conclusions and recommendations are presented in Section 5.0. Compl3te analytical results are presented in Appendix B.