Standard Guide for Field Logging of Subsurface Explorations of Soil and Rock

Abstract

5.1 The preparation of field logs provides documentation of field exploration procedures and findings for geotechnical, geologic, hydrogeologic, and other investigations of subsurface site conditions. This guide may be used for a broad range of investigations. 5.2 The recorded information in a field log will depend on the specific purpose of the site investigation. All of the information given in this guide are possible data that could be considered when logging. Refer to report sections of the individual standards listed in Section 2 for specific reporting requirements and example field data sheets and example logs. Required information on field logs that is determined by the user or agency performing the testing and as appropriate to be required in their work plans or quality assurance plans may or may not include all items in Section 6. 5.3 Numerous guidance documents are available, for examples and typical requirement on logging of subsurface investigations (1-10)4. Note 1: The quality of the result produced by this standard is dependent on the competence of the personnel performing it and the suitability of the equipment and facility used. Agencies that meet the criteria of Practice D3740 are generally considered capable of competent and objective testing/sampling/inspection. Reliable results depend on many factors; Practice D3740 provides a means of evaluating some, but not all, of those factors.