PAH, Groundwater, and Coring Collage
![PAH, Groundwater, and Coring Collage](https://d9-wret.s3.us-west-2.amazonaws.com/assets/palladium/production/s3fs-public/styles/full_width/public/thumbnails/image/PAH-Coring_0.jpg?itok=kR2aMqlx)
Detailed Description
(L - R) Collecting PAH samples in an urban creek adjacent to coal-tar-based pavement sealcoat treated surfaces; Surficial aquifer groundwater sampling; Collecting lake sediment core at Town Lake in Austin, Texas. (Credit, Barbara Mahler and Alan Cressler, USGS.)
Sources/Usage
Public Domain.