This contract series starts when Kesta Jones sends you a mail upon your first entry to the Parnassus cluster. After meeting her successive salvage contracts are offered. The fourth contract sends you to cluster PLY-505 to retrieve produce pods near coordinates 251, 191.
There are four pods within the fringes of an asteroid field. After retrieving those four pods containing produce, no others are visible on the cargo pod screen, but as soon as you move away from that location the icon representing the pods is still visible on the Nav display. Returning to the pod location reveals four additional pods containing produce. You can pick transfer these to your ship, but on leaving the location the same thing repeats.
There seems to be a limitless supply of respawning pods, in groups of 4 for each spawn.
I returned to Ena-Tarusa with my 8 pods of produce, and Jones’s representative met me at the station as normal. She auto-initiated a conversation and took 4 loads of produce and paid me the fee. Then I was able to initiate the same conversation again, deliver the other 4 loads I had, and receive another fee.
After completing both these conversations the quest contract remained unfulfilled, presumably permanently because the pods ion PLY-505 will respawn indefinitely.
I did try to complete the quest by only taking 4 pods back to Ena-Tarusa, but this did not complete the contract either.