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Investigation of Total and Hexavalent Chromium in Filtered and Unfiltered Groundwater Samples at the Tucson International Airport Superfund Site

Author:
Tillman, Fred D, McCleskey, R. Blaine, Hermosillo, Edyth
Source:
Bulletin of environmental contamination and toxicology 2016 v.97 no.4 pp. 543-547
ISSN:
0007-4861
Subject:
airports, chromium, groundwater, groundwater contamination, wells, Arizona
Abstract:
Potential health effects from hexavalent chromium in groundwater have recently become a concern to regulators at the Tucson International Airport Area Superfund site. In 2016, the U.S. Geological Survey sampled 46 wells in the area to characterize the nature and extent of chromium in groundwater, to understand what proportion of total chromium is in the hexavalent state, and to determine if substantial differences are present between filtered and unfiltered chromium concentrations. Results indicate detectable chromium concentrations in all wells, over 75 % of total chromium is in the hexavalent state in a majority of wells, and filtered and unfiltered results differ substantially in only a few high-turbidity total chromium samples.
Agid:
5555533