Orchard: filtering forecasts and queries Taxonomic terms

Question

I created a Content-Type called Contact (fields like Name, e-mail ...).

I also have two taxonomies:

Location (NY, Denver, Washington...) Department(Computers, Hardware, Software...) 

I included both in the pin type

Now I want to find a way to add a parameterized query to filter by Location AND Department.

I can write a filter request in Location - but I cannot find a way to dynamically determine the location. (can only be selected from the list)

Ideally, if the page is http://server.com/Denver , the page should display a list of all departments in Denver - with links

So http://server.com/Denver/Hardware should list all contacts with the Denver and Hardware taxonomy terms

Or is there a better way than using taxonomies and forecasts?

Thanks,

Reinhard