Passive Sampling Methods for Contaminated Sediments & Groundwater Challenge Passive sampling offers an alternative that allows easier and more accurate measurement of the dissolved hydrophobic organic contaminants (HOCs), provides lower detection limits, and eliminates the cost of transporting large volumes of sediment and water samples back to the lab. Of particular concern are the dissolved HOCs present in sediment porewater because they are more available to aquatic organisms than the contaminants bound to sediment particles. Battelle is constantly improving passive sampling technologies and deployment methods to facilitate measurement of dissolved contaminants in sediment porewater, as well as surface water and groundwater. Solution Battelle uses low-density polyethylene (LDPE) sheet-

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