[To Parent Directory]12/16/2025 12:46 AM <dir> ECHEM QC12/16/2025 12:38 AM 57828 Q3842-QACheckList.pdf12/16/2025 12:38 AM 55870 Q3842-QCCheckList.pdf12/16/2025 12:38 AM 52191 Q3842-SignaturePage.pdf