| http://www.w3.org/ns/prov#value | - However, some VOCs including toluene, ethylbenzene, xylenes, and trimethylbenzenes were found at somewhat elevated concentrations, but below those of health concern.Characterization of Airborne Contaminants at the Ballard Pits State Superfund Site in Nueces County, Texas Final ReportDefining Biota-Sediment Accumulation Factors for the San Jacinto River Waste Pits, Texas (September 2009-August 2012
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