This is probably a total noob question.
 
We recently implemented the guided navigation on our site. Google has since then been indexing the category, manufacturer pages with the url params for filtering like below
How the url displays in the SERP
www.site.com/store/c-2-awesome-category.aspx?pagesize=100
 
Did I miss something along with way with configuring the guided navigation? 
How does one go about fixing this? 
Or would this be something that is done through Google Web Master Tools?
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