You need to note any observations you have on the two areas of the aqueduct you've been assigned, as well as collect two fragments of the aqueduct itself.
The first location you should examine is along the top of the aqueduct in an area near a division between the Trade Court and the Residence Court. ( -501, 11, 311 ) /waypoint -501, 11, 311 or ( -629, -18, 313 ) /waypoint -629, -18, 313
The Second area you need need to examine and observe is the top of the central drainage arm of the aqueduct that is located in the Residence Court. ( -360, 14, 408 ) /waypoint -360, 14, 408
You need to gather a fragment from the central area of the aqueduct located in the center of these tombs. Locations include the following: