If you regularly use direct push technology (DPT) for high-resolution site characterization (HRSC) efforts, there is a very good chance you’ve experienced DPT refusal. Although frustrating, there are often solutions to overcoming refusal and completing data collection for your conceptual site model (CSM). Every DPT refusal scenario is different, which is why environmental consultants must understand the different types of refusals, options for overcoming them and when to consider hybrid drilling options.