USGS - science for a changing world

Environmental Health - Toxic Substances

Photo Gallery

Diel Variability of Emerging Contaminants

CLICK PHOTOS FOR AN ENLARGED VERSION

Discharge of the Roger Road wastewater treatment plant effluent into the Santa Cruz River, AZ, at the start of the study reach (mile 0). Effluent from the plant was collected over a 24-hour period coinciding with low, rising, peak (2), and falling discharge

Discharge of the Roger Road wastewater treatment plant effluent into the Santa Cruz River, AZ, at the start of the study reach (mile 0). Effluent from the plant was collected over a 24-hour period coinciding with low, rising, peak (2), and falling discharge

The flume of the Ina Road wastewater treatment plant at mile 4.2 of the study reach on the Santa Cruz River, AZ. The samples collected at this site and three others were analyzed for 102 emerging contaminants

The flume of the Ina Road wastewater treatment plant at mile 4.2 of the study reach on the Santa Cruz River, AZ. The samples collected at this site and three others were analyzed for 102 emerging contaminants

USGS scientists collecting a sample of wastewater effluent from the Ina Road wastewater treatment plant. The plant is located at mile 4.2 of the study reach on the Santa Cruz River, AZ, where the scientists studied the fate of 102 emerging contaminants over a 24-hour time period

USGS scientists collecting a sample of wastewater effluent from the Ina Road wastewater treatment plant. The plant is located at mile 4.2 of the study reach on the Santa Cruz River, AZ, where the scientists studied the fate of 102 emerging contaminants over a 24-hour time period

One of the sampling sites from an investigation on the temporal occurrence and persistence of emerging contaminants in an effluent-dependent stream (Site 3, mile 6 on the study reach, Santa Cruz River, AZ)

One of the sampling sites from an investigation on the temporal occurrence and persistence of emerging contaminants in an effluent-dependent stream (Site 3, mile 6 on the study reach, Santa Cruz River, AZ)

Over a 24-hour period coinciding with low, rising, peak (2), and falling streamflow the USGS collected samples from each of four sites along the Santa Cruz River, AZ. This is a view of site 4, which is 14 miles from the first wastewater discharge point on the river

Over a 24-hour period coinciding with low, rising, peak (2), and falling streamflow the USGS collected samples from each of four sites along the Santa Cruz River, AZ. This is a view of site 4, which is 14 miles from the first wastewater discharge point on the river

 

More Information

Related Photo Gallery

Back To Main Photo Gallery Index

USGS Home Water Climate Change Science Systems Ecosystems Energy and Minerals Environmental Health Hazards

Accessibility FOIA Privacy Policies and Notices

Take Pride in America logo USA.gov logo U.S. Department of the Interior | U.S. Geological Survey
URL: http://toxics.usgs.gov/photo_gallery/diel.html
Page Contact Information:
Page Last Modified: Thursday, 10-Jan-2013 17:10:47 EST