TY - RPRT TI - User's guide for polyethylene-based passive diffusion bag samplers to obtain volatile organic compound concentrations in wells. Part I, Deployment, recovery, data interpretation, and quality control and assurance AU - Don A. Vroblesky PY - 2001 DO - 10.3133/wri014060 UR - https://pubs.usgs.gov/publication/wri014060 ID - wri014060 ER -