The Lakeshore Ruins

You will be asked to go to the Lakeshore Ruins (approximately at loc 817, 10, -24). Once there you should see along side the ruin walls a bunch of piles of dirt. Use the "ArtifacSafe Brand Cleaning Fluid". The pile of dirt will then turn into a harvestable node. That is the item you need for the update. Once you have all of the update return to Zeliss Vrang at Dreg's Landing.