You could search your SPs for the table name. It won't tell you if the SPs are used, but can be helpful in general.
select name, crdate, CHARINDEX('TableName', definition),substring(definition,CHARINDEX('TableName', definition)-25,150) as 'Code Snippet', definition as 'Entire Code'
from sys.sql_modules com
join sysobjects obj on com.object_id = obj.id
where definition like '%TableName%'
order by name