National Water-Quality Assessment Program
Upper Illinois River Basin

Photos of Ground-Water, Surface-Water, and Ecology Activities

Ground Water: Drilling a new well

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	1: Arriving on site with the Indiana District's drill rig.		2: Hammering split-spoon sampler through hollow-stem auger flights to collect core sample.
	3: Core sample in box and half of split-spoon sampler.		4: PVC standpipe installed, checking depth inside auger flights.
	5: Adding clean sand filter pack.		6: Tamping down filter pack.
	7: Protective casing installed over PVC standpipe after auger flights have been removed.		8: Steam cleaning auger flights.

Surface Water: Sampling at Salt Creek, Illinois, March, 1999

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	1: Field-rinsing of equipment at the Salt Creek site. This site is at the Wolf Road Bridge in Western Springs, IL.		2: Collecting a Volatile Organic Compound (VOC) sample.
	3: Adding a stabilizing agent to the VOC sample for later lab analysis.		4: Collecting a sample at one cross-section of the creek. Approximately 9-10 Liters (3-4 gallons) of water is taken for analysis.

Ecology: Sampling for habitat characteristics, fish, algae, and invertebrates

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	Measuring channel depth which is a habitat characteristic.		Electrofishing for fish species present in the stream.
	Using Hess sampler to collect bugs from gravel in the stream. The person to the left is collecting rocks for an algae sample.		Scraping sticks to get an algae sample

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Page maintained by: Terri Arnold
Last modified: Tue Jun 25 13:07:35 CDT 2002
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