1Identifier assigned to well in Tucson Airport Remediation Project area.		
2Agency identifier assigned to well.		
"3Agency reporting well identification number.  USGS, U.S. Geological Survey assigns a USGS Site No., a unique 15-digit site-identification "		
"  number permanently designated by the USGS and recorded in National Water Information System, a national computer database maintained by"		
"  USGS at http://nwis.waterdata.usgs.gov/nwis/gw.  ADWR, Arizona Department of Water Resources assignes a Wells 55 Registration Number that"		
"  begins with ""55-"" (for example, 55-569349) or a 15-digit Groundwater Site Inventory Site Identification Number (for example, "		
  320815110585201); well data may be available at https://gisweb.azwater.gov/waterresourcedata/.		
"4Former Supply, large-diameter well formerly used in the City of Tucson municipal supply system; Monitoring, small-diameter well used for water"		
"  quality sampling; Private, private well used for drinking water or irrigation purposes; Supply, large capacity well used in City of Tucson municipal "		
  supply system.		
"5ADEQ, Arizona Department of Environmental Quality; ADWR, Arizona Department of Water Resources; PDEQ, Pima County Department of"		
"  Environmental Quality (Pima County Department of Environmental Quality, 2009); Tucson Water, City of Tucson Water Department; USGS, "		
  U.S. Geological Survey information from National Water Information System database (http://nwis.waterdata.usgs.gov/nwis/gw).		
6Data reported as nondetect are plotted at one-half the reporting limit.		
"7ADEQ, Arizona Department of Environmental Quality; PDEQ, Pima County Department of Environmental Quality; TIAA, Tucson International"		
"  Airport Authority; Tucson Water, City of Tucson Water Department; USGS, U.S. Geological Survey Arizona Water Science Center."		
"8Published source for 1,4-dioxane data:"		
	"Conestoga-Rovers & Associates, 2007, Groundwater monitoring results for 1,4-dioxane sampling, TIAA Superfund Site—Airport Property, 
   Tucson, Arizona: Conestoga-Rovers & Associates, Reference No. 013711-89, 130 p."	
	"Conestoga-Rovers & Associates, 2009, Groundwater monitoring results for 1,4-dioxane sampling, TIAA Superfund Site— Airport Property, 
   Tucson, Arizona: Conestoga-Rovers & Associates, Reference No. 013711-281, 12 p."	
	"Malcolm Pirnie, Inc., 2007, Tucson International Airport area Groundwater Remediation Project, semi-annual status report, September 2006 
   through February 2007: Malcolm Pirnie, Inc., no. 1830-086, 193 p."	
	"Malcolm Pirnie, Inc., 2009, Tucson International Airport area Groundwater Remediation Project,  semi-annual status report, March 2009 
   through August 2009: Malcolm Pirnie, Inc., no. 1830-086, 202 p."	
	"Pima County Department of Environmental Quality, 2009, South-side private well monitoring program, Tucson International Airport area 
   superfund site, Tucson, Arizon: Pima County Department of Environmental Quality, Annual Report, April 2009, 52 p."	
	"Tillman, F.D, 2009, Results of the analyses for 1,4-dioxane of groundwater samples collected in the Tucson Airport Remediation Project 
   area: U.S. Geological Survey Open-File Report 2009-1196, 14 p."