The photos shown below were provided by Cris Lindley and Sonja Abney of the National Water Quality Lab in Denver, Colorado (May, 2012). The photos are for use in the Principal Aquifer Circulars and show various equipment and people performing the analyses.
URL: http://water.usgs.gov/nawqa-only/aq/PACirculars/NWQL_Photos.html
Maintainer: Terri Arnold (email tlarnold)
Last modified: Friday, 11-Jan-2013 13:24:57 EST