Drilling of wells; environmental drilling, namely, installation and development of monitoring wells, drilling for purposes of soil, vapor and groundwater sampling, soil gas sampling, profiling of subsurface conditions, collection of soil, vapor and water samples, setting of monitoring devices, in-situ remediation injections, and installation of remediation systems; geotechnical drilling, namely, drilling for purposes of site investigations to evaluate subsurface geotechnical soil and geological properties, collection of soil, vapor and water samples, groundwater depth and slope stability evaluation, setting of geological and hydraulic measuring devices, and installation of subsurface improvements and in-situ chemical injections; deep drilling making use of sonic drills; exploratory drilling; test boring services; mineral extraction and mining drilling, namely, exploratory drilling for purposes of mineral exploration, mine development and gathering of data for feasibility studies relating to mineral exploration and mine development; ground surface preparation for drilling and mineral extraction in the nature of air knifing soils and removing underground utilities at project sites

Management and disposal of investigation-derived-waste generated during the course of soil and subsurface investigations

Ground surface preparation in the nature of air knifing and utility clearance of project sites