I had AA Bottled Gas install an in-ground tank when I had a whole house generator installed 2007. I had bids and they were the lowest. They came out and did the work in one day. It took them longer then expected because of tree roots and clay, but did not charge extra. They gave me a good deal on the purchase of the tank because it was a 330 Gal special order that they had on hand. Since 07 they have delivered gas when I needed it. I'm very happy with the service. Note: If you want the best price on gas you need to own the tank you save like $2 per gal which really adds up. Plus you can buy from any gas company. I shopped around before re-ordering and found that AA is still the cheapest.