API Publ 4690 pdf download.A Guide for the Use of Semipermeable Membrane Devices (SPMDs) as Samplers of Waterborne Hydrophobic Organic Contaminats The focus of this work is the aquatic environment, which includes surface water, groundwater, and sediment pore water. Models are presented for estimating ambient concentrations of analytes for surface water and ground water, and environmental-specific limitations are discussed for...