|
Table 6-1 Identified groundwater
contamination sites in Pima County. |
|
CONTAMINANT |
LOCATION |
SOURCE |
|
Sulfates |
Green Valley |
Mining |
|
Nitrates |
Green Valley |
Natural |
|
Radon |
Tucson, various locations |
Natural |
|
Nitrates |
Santa Cruz River |
Agriculture, Sewage Effluent |
|
Chromium |
Near downtown |
Manufacturing |
|
PCE and TCE |
Broadway/Pantano |
Landfill |
|
Petroleum |
Davis-Monthan |
Leaking Fuel Tanks |
|
23 VOCs |
El Camino del Cerro |
Landfill |
|
VOCs/Metals |
ESCO - Tucson |
Hazardous Waste Site |
|
VOCs (PCE, TCE and others) |
Los Reales Landfill |
Landfill |
|
TCE, PCE, Freon and others |
Miracle Mile, Silverbell Jail Annex |
Landfill |
|
Diesel, PCE, TCE and others |
Mission Linen |
Dry Cleaning, Leaking Underground Storage Tanks
|
|
TCE and chromium |
Airport |
Solvents in Aircraft Cleaning |
|
Chromium, TCE and others |
Hughes (Raytheon) |
Waste Disposal |
|
Arsenic |
Various |
Natural |
PCE - perchloroethylene; VOC - volatile organic
compounds; TCE - trichloroethelyne
|
Source: Arizona Department of
Environmental Quality, Arizona Water Quality Assessment, 1996.
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