Question:
Where are Scenarios stored?
Answer:
Scenarios are stored in Utility Project in the DGN file. The DGN files are therefore portable without needing to package additional files other than DGN references. For organizations who want a set of prebuilt scenarios available for their projects at startup you can configure scenarios in the DGN library which contains your hydraulic seed file.
See: http://communities.bentley.com/products/road___site_design/w/road_and_site_design__wiki/24538.hydraulic-seed-file