Just a quick thoughts about considering including Ecoindicator '99 as "Other environmental impacts".
1) The Ecoindicator '99 Manual for designers says (page 9, use and limitations): "The standard Eco-indicator values are not intended for use in environmental marketing, for environmental labellling or for proving in public that product A is better than product B"
2) In the year 2008 a new methodology was created combining Ec'99 and CML methodologies concepts, updating the base lca data and creating the RECIPE Methodology. The concepts of Eco-indicators are present here also, but it's also a a mid-point Methodology. http://www.lcia-recipe.net/
Why not use this reviewed methodology instead of the Ec'99?