Characterization of Soil, Groundwater, Surface Water, Sediment & Air Home Insights Publications Spatially averaged, flow-weighted concentrations – a more relevant regulatory metric for groundwater cleanup Murray Einarson advocates for the use of a new standard for groundwater cleanup in place of maximum contaminant levels. How you can cut costs and strategically address environmental challenges on campus What is the most effective way to approach the semi-privatized regulatory environment for property development? Here are seven things you can do. Direct push optical screening tool for high-resolution, real-time mapping of chlorinated solvent DNAPL architecture The tool is a new site characterization technology that facilitates 3-D delineation of residual chlorinated solvent DNAPL in the subsurface. Emerging contaminants in Arizona water: a status report Haley & Aldrich staff worked closely with ADEQ's Advisory Panel to produce this report on emerging contaminants in Arizona’s water supplies. Overview of depth‐discrete multilevel groundwater monitoring technologies: focus on groundwater monitoring in areas of oil and gas well stimulation on California Describes key multilevel systems for groundwater monitoring in areas of oil and gas well stimulation, as required by California law. Bioavailability: a critical, yet often overlooked, metric in remediation decisions An often-overlooked risk assessment for cleaning up contaminated sediments is bioavailability, which can substantially reduce project scope and costs. Development and testing of a field screening method based on bubbling extraction and photoionization detection for measurement of benzene and total VOCs Peter Bennett and Murray Einarson discuss a new screening method to complete a site conceptual model and analyze groundwater from monitoring wells. Insights from Battelle’s Ninth International Conference on Remediation of Chlorinated and Recalcitrant Compounds Michael Basel and Paul Tornatore discuss industry trends from Battelle’s Ninth International Conference on Remediation of Chlorinated and Recalcitrant Compounds.