I lived in Pittsburgh for 15 years and I had to goggle where the "Forbes Substation" is to see it is downtown near the country jail.
Pittsburgh is a tough area to camp in and commute to the city. There are a very limited number of campgrounds in the metro area and then traffic is always bad getting downtown. If he is working non-traditional work hours, the drive will be easier.
Raccoon State Park or the KOA are the best alternatives. I would get their addresses and then map the drive time. The state park doesn't have sewers.
Lots of good ethnic food in the 'Burg.