I hope your putting reclaim in. Back in 2004 my distributor said "there was no economic value" to reclaim. If I would've done my homework, I would have put it in. Now I need to dig up my lot and do everything I should've done back then.
Above-ground tanks are an option in the north however steps must be taken to cover freeze concerns during the winter. Recirculating the tanks can help but other measures to protect from freezing should also be considered.