The contractor will analyze and report ultra-trace results for ambient freshwater and sediment samples to ECCC, for samples collected and submitted by ECCC, as and when requested during the period of the contract (2022-23 + option years 2023-24 and 2024-25). For consistency with data collected to date and comparability with other agencies, analyses for the analyte groups must be done by methods described in Table 1 below (or by newer methods if appropriate and approved by ECCC). All analytes and limits of detection listed in Annex Tables A1-A16 must be measured and met, respectively, to ensure consistency and comparability of this study with the broader initiative. DeliverablesThe Contractor must submit, within 6 weeks following receipt of samples, a report including the analyte concentration in each sample and the minimum detectable concentration of each analyte (detection limit). Analyte mass may be reported in nano or pico grams depending on the particular analyte.All analytical data reports/certificates of analysis must include pertinent QA/QC data and must be approved and certified by authorized personnel of the Contractor prior to release to the Project Authority.c. Results must be delivered via email in both a standard analytical report/certificate of analysis format (PDF preferred), and also in a specific electronic transfer file (xlsx, csv or txt) for upload into the relevant ECCC databaseSecurityThere is no security requirement associated with this requirement