The city sanitation department has been prioritizing snow removal and garbage collection but on Thursday DSNY was catching up on recycling, with a line of trucks waiting to discharge paper at the Pier 99 transfer station. Workers winched a loaded scow out of the shed, covering the bags of waste paper with netting as the barge emerged. Don Jon Marine’s low-slung J. Arnold Witte made up to the barge and headed for the recycling mill on the Arthur Kill on Staten Island. All paper collected for recycling in Manhattan passes through this transfer station heading for the Staten Island plant where it is transformed into cardboard boxes and other products.