180-199521-2_BattelleCorp.xls

This is a laboratory analytical results spreadsheet containing dioxin and furan testing data for four composite soil samples and related quality control samples. The file documents comprehensive testing conducted by Battelle Corporation for Project 180-199521, with samples analyzed using EPA Method 1613B to detect polychlorinated dibenzo-p-dioxins and dibenzofurans (PCDDs/PCDFs). Sampling occurred between January 5-15, 2026, with analyses completed by January 26-28, 2026 at the lab designated EET PIT (Environmental Element Testing Pittsburgh). The four primary composites (A, B, C, D) were tested for total toxic equivalency (TEQ) values, with results ranging from 13-29 ng/Kg wet weight. Each composite was analyzed for 17 congeners including 2,3,7,8-TCDD, 2,3,7,8-TCDF, and OCDD/OCDF, with qualifiers indicating estimated values (J), undetected results below method detection limits (U), and isotopically labeled standards (13C-surrogates) used for quality assurance. Method detection limits (MDL) and limits of quantitation (LOQ) varied by analyte, with MDLs ranging from 0.17 to 17 ng/Kg dry weight and LOQs from 0.87 to 110 ng/Kg dry weight.

Amended composites (A, B, C, D) were subsequently tested in wet weight (pg/L) format alongside the original dry weight results, with additional EPA 6020B inductively coupled plasma mass spectrometry testing on Amended Composite C detecting metals including aluminum, barium, molybdenum, sodium, and strontium. Laboratory control samples and method blanks demonstrated acceptable quality control performance, with recoveries generally within 60-120% range for most analytes. The file supports environmental characterization, likely related to Newark Bay dredging operations referenced in the associated federal contract opportunity W912DS26BA027, issued by the Department of the Army Corps of Engineers Engineering District New York for maintenance dredging of the Federal Navigation Channel.