You can see all the previous permit applications from Scott's manual spreadsheet parsings here, except for a couple that went missing.
If you want to integrate them with your csv file,
switch everything in the respective urls before the
final (sixth) slash for
"https://raw.github.com/tlevine/mvn-www2-backup/master/documents"
For example,
http://www2.mvn.usace.army.mil/ops/regulatory/pdf/document2011-09-09-103911.pdf
becomes
https://raw.github.com/tlevine/mvn-www2-backup/master/documents/document2011-09-09-103911.pdf
You can also download them all at once here