Ludowise, J. D. Final Hazard Categorization for the Remediation of Six 300-FF-2 Operable Unit Solid Waste Burial Grounds, report, December 12, 2006; (https://digital.library.unt.edu/ark:/67531/metadc899008/m1/1/: accessed November 18, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; .