There’s only one foreman to interrogate. The area has one sentry and as long as you don’t have your weapon drawn, you can lure targets to an ambush in the stairs by deliberately getting seen. Take out the enemies one by one until you can comfortably sneak and interrogate the foreman. After clearing the area, shoot the gas canisters and the gas tank of the nearby truck to inflict more damage. The foreman will also reveal Cavar’s money stash location. I suggest reducing their numbers first before going loud, should you want to start a firefight. Just take note to disable the informant first by attacking him then take out the rest.
Steal Cavar’s Money Stash
This objective is unlocked by successfully interrogating the foreman. This is located in the construction depot under the overpass. The money is stashed on the table of the trailer office. The gang will be executing someone so it’s up to you to left them get distracted and finish the job while you take the money, or risk it and save the victim. Either way, you always have to kill the sentry first to lessen your worries.