I have no idea of the TG.
The rig is a tractor-trailer 5000 gallon water and 600 gallon foam with 2 deck guns.
Your average pumper is 500 gallons.
This unit can put out alot of fire at once with having to resupply.
Also is awesome piece of equipment for flammable liquid fires as we observed in Issaquah tanker fire.
The truck used for the Tukwila brush fire responded from Seattle/Boeing Field.
When they are requested for mutual aid for large flammable liquid fires they will send a truck from Seattle and Renton.
They also will send pumpers, aid cars and hazardous material unit and lots of personnel if requested.
http://www.boeing.com/companyoffices/ab ... story.html