Intel report is obtained during the Shield of Arrav quest and is taken from the dead Jonny the beard. It needs to be taken to Straven for admission to Phoenix Gang.
There is an archaeologist hanging around the statue on the outside of the city, with mining equipment.
Could she be on to a hidden treasure buried near
There is a new channel being dug and a barge being assembled near the digsite. The Varrock museum seems to be paying for it. Could they have information about new treasures?
For an exhaustive list of all known sources for this item, see here
Until an update, there was not a destroy option but drop option for disposing the report, and it is still obtainable after the completion of the quest.