Once known where to focus, more specific data are necessary.
Thus, primary activity data are to be collected from those
activities filled in black in Fig. 3, which in order of contribution
are: can production, retail, and sunflower oil production. The
rest of contributing activities already involved specific data for
the Galician mussel sector in the calculation of the anticipated
life cycle GHG emissions (Table 1). As regards PAS 2050, with
the aim of guaranteeing the feasibility of this method, primary
activity data are required for those processes owned, operated
or controlled by the organization carrying out the analysis (BSI,
2008).