180-172841-1_BattelleCorp.xls

This is a laboratory analytical results spreadsheet containing environmental soil and water sample testing data from Battelle Corporation for project 180-172841. The file presents comprehensive chemical analysis results for three composite samples (Composite A, Composite D, and Amended Composite A) analyzed using EPA-approved methods including dioxin/furan testing (Method 1613B), metals analysis (EPA 6020B), volatile organic compounds (EPA 8260D), semi-volatile organic compounds (EPA 8270E), pesticides (EPA 8081B), PCBs (EPA 8082A), and herbicides (EPA 8151A). Results are reported with detection limits (MDL/LOQ), qualifiers indicating detection status and quality flags, recovery percentages for quality control, and extraction and analysis dates ranging from April to May 2024. The data includes both dry weight and wet weight measurements for various analytes such as dioxins, furans, metals (chromium, lead, mercury, arsenic), volatile organics (benzene, trichloroethene, chloroform), and semi-volatiles (PAHs, phthalates, phenols).

The spreadsheet also documents matrix spike (MS) and matrix spike duplicate (MSD) results for quality assurance, showing recovery rates and target concentrations. Analytes of particular concern include elevated chromium levels (ranging from 8.9 to 85 mg/kg dry weight), tetrachlorodioxin congeners with various qualifiers, total PCBs at 0.0094-0.0052 mg/kg, and total petroleum hydrocarbons. Surrogate compounds used for quality control (13C-labeled standards and chlorinated surrogates) demonstrate acceptable recovery percentages, validating the analytical methods employed. The data supports environmental assessment activities related to the Cheesequake Creek East Jetty Rehabilitation project under Army Corps of Engineers contract W912DS26BA031.