Customer is remodeling the middle floor of the building and needs a wall stack moved. In addition the customer needs exhaust venting for kitchen hood, kitchen hood is 600 cfm, anything over 400 cfm requires make up air, so we will have to add a fresh air damper to the return air. This job also requires a gas line to be run to the kitchen area, customer would like this to be completed in two parts if possible. First we would complete the relocation of the supply air duct, ( new wall has to be framed in for this to happen), we can also complete the fresh air make up, and gas line ( ceiling needs to be opened up for the gas piping to be completed). The first day will require a full day onsite. Second trip would require the down draft kitchen hood to be in place to complete the exhaust venting. Completed gas piping, and exhaust venting for the kitchen hood. Leak checked work with gas sniffer. Closed out with customer. Confirmed operation of furnace and water heater before departure.