Im working on this large DB which has a lot of the business knowledge embedded in the SPs[I know!] and there is a lot of chaining between the SPs. i.e one stored proc callin
Try something like this:
use YourDatabase;
select [Name]
from sys.procedures
where object_definition([object_id]) like '%YourColumnName%';
Obviously this has the potential to generate a lot of false positives depending on what the column is named but at least you will have a list of procedures to sift through.