A couple of years ago I make a bid on an agricultural installation (or so I thought). It was a large steel structure (900'x300' open on all sides, probably 30' at the peak). It processed dairy cow manure into compost. The bid was for lighting, general use receptacles and one 10 hp sub pump. After a phone call to the State AHJ, I bid the job using prices for pvc coated MC, pvc j-boxes, feeder conduits and sch. 80 "risers" to outlets. I lost the job to an EC who used EMT, set-screw fittings, metal four-square's and regular MC. The local (county) AHJ approved the job. Drove by it yesterday and it's already starting to corrode. Would you gripe?