180-199686-2_BattelleCorp.xls

This file is a laboratory analytical results spreadsheet containing dioxin and furan testing data from Battelle Corporation. The results document analyzes multiple composite and discrete soil/sediment samples (labeled A through K, with samples numbered 180-199686-1 through 180-199686-14) for toxic dioxin and furan congeners using EPA Method 1613B. Testing was conducted on samples extracted between January 8, 2026 and January 28, 2026, with analyses performed between January 19, 2026 and February 3, 2026. Results are reported in nanograms per kilogram (ng/Kg) on a dry weight basis and picograms per liter (pg/L) on a wet basis, with Method Detection Limits (MDL) and Limits of Quantitation (LOQ) specified for each analyte. The spreadsheet includes quality assurance data, including 13-Carbon labeled surrogate internal standards (SIS) for recovery assessment and matrix spike (MS) and matrix spike duplicate (MSD) samples for multiple composites, with recovery percentages typically ranging from 56% to 127%. Total toxic dioxin and furan concentrations (TEQ) are provided for each sample on a wet weight basis, ranging from 9.2 ng/Kg to 100 ng/Kg across the samples analyzed. All results are flagged with laboratory qualifiers (J for estimated values, U for non-detected compounds, I for isolated interference) where applicable, and several data points carry flags indicating noted conditions or concerns with specific analyte results.