Appendix A: Combined EMW Dataset 



Chlorinated hydrocarbon concentrations in bivalve tisses are reported as ng/gdw and have 

 been corrected for recoveries by the individual Analytical Center. For this report , we have 

 adopted a reporting limit of 250pg/g for each analyte in the combined dataset (see the discussion in 

 the QA/QC section of the report) and have indicated in the data tables any concentration below that 

 as "trace" (Tr) unless it was reported by the Analytical Center as below detection limits (i.e., not 

 detected, N.D.). Data reported by participating Host-Country analysts is not included here but are 

 discussed in Appendix C. 



In addition to the analytical results, the International Mussel Watch database contains 

 information on: 



• participating Host-Country scientists (e.g., name, address, fax, etc.) 



• bivalve species (e.g., scientific and common names, length, range, etc.) 



• sample site description (e.g., collector observations, location information, etc.) 



• sample file (e.g., sample handling, storage, etc.) 



The software for this complex database is 4th Dimension, a relational database tool which runs on 

 Macintosh. The database structure was designed by the Project Secretariat staff to meet IMW data 

 needs. 



