EPA interim final report on WTC background study, April 2003

NYC 9/11 Public Portal Document

FIGURES Figure 1 World Trade Center Backgroimd Study and WTC Dust Cleanup Program Areas

TABLES Table 4-1 WTC Background Study Sampling and Analytical Procedures Summary Table 4-2 WTC Background Study Field Sample Collection Summary

Table 4-3 Quality Control Wipe Spike Sample Results For Lead

Table 6-1 Organic and Inorganic Results Summary for Residential and Common Spaces Table 6-2 Organic and Inorganic Results Summary for Residential Spaces

Table 6-3 Organic and Inorganic Results Summary for Common Spaces

Table 6-4 Mineral Compoimds and Total Dust Results Summary for Residential and Common Spaces Table 6-5 Mineral Compoimds and Total Dust Results Summary for Residential Spaces Table 6-6 Mineral Compounds and Total Dust Results Summary for Conunon Spaces Table 7-1 Summary of U.S. Residential Building Average Indoor Airborne Asbestos Concentrations for Asbestos Fibers ’ 5 mm Long by Direct Transmission Electron Microscopy Table 7-2 Summary of Settled Asbestos Surface Dust Loadings Determined Through Microvacuum Sampling and Indirect Analysis by Transmission Electron Microscopy Table 7-3 Household Dust Lead Measurements from Wipe Sampling in an Old, Urban Community Table 7-4 Estimated Distribution of Lead Loadings (ug/tf) In U.S. Housing Table 7-5 Background Soil Concentrations of Polycyclic Aromatic Hydrocarbons (PAHs) Table 8-1 Background Concentrations Derived From The Analytical Results Table 8-2 Comparison of Background Concentrations Derived From The Analytical Results with Literature or Historical Values Table 8-3 Comparison of Background Concentrations Derived From The Analytical Results Using Values of Zero, ’/z of the Detection Limit, or the Detection Limit

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NYC-WTC_000145873