Saneris and Drexel have both asked you to scan murder victims in the badlands; one wants justice, the other wants profit. Search for bodies in the cesspools, scan them, and decide who you'll give the information to.
In the Haarfel region of Kadara, go to the New Mission icon north of the road's trifurcation to speak to the asari Saneris. Saneris will describe how the native sulfur pools are being used as dumping grounds for bodies and ask you to scan the bodies as evidence to be used to obtain future justice. Drexel, the turian standing nearby, would rather you scan the bodies for what can be salvaged.