ASTM D 8571:2024

1.1 This practice presents a method for delineating the subsurface presence of nonaqueous phase liquids (NAPLs) consisting of petroleum hydrocarbons, coal tars, and similar waste materials using an optical image profiler (OIP) system. The OIP probe is advanced into waste materials, soils, and unconsolidated formations using direct push (DP) methods. The OIP system provides data approximately each 15 mm (0.05 ft) of log depth to support high-resolution site characterization. 1.2 OIP logging is limited to wastes, soils, and unconsolidated formations that can be penetrated with the available direct push equipment. The ability to penetrate materials is based on carrying vehicle weight, density of soil/materials, and consistency of soil/materials. Penetration may be limited or damage to sensors or tooling can occur under certain ground conditions. DP tools are not designed to penetrate consolidated rock (Guides D6001/D6001M and D6282/D6282M , Practices D7352 and D8037/D8037M ). 1.3 Units- The values stated in SI units are to be regarded as standard, however, inch pound units are indicated for information within parentheses as they are in common use for many users. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in nonconformance with the standard. 1.4 All observed and calculated values shall conform to the guidelines for significant digits and rounding established in Practice D6026 , unless superseded by this standard. 1.5 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use. 1.6 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

13.030.99, 13.080.01