The Xindi-Arboreal colony was a colony that was settled on a planet located within the Delphic Expanse.
The colony was very peaceful: it had no defensive systems, no active sensors, no artificial satellites, and no orbiting starships. Tree scarabs, a species native to the planet were often hunted by the Xindi-Arboreals that settled the planet.
The colony's population was slightly less than a hundred residents, and eighty of them worked at the kemocite refining facility that operated there. This facility, whose primary technician was Gralik Durr, used positrons and antiproton bursts to refine kemocite into a pure form for sale. The colony did not only sell to the Xindi, but many other races as well. It did not sell to weapons manufacturers, however.
In early 2153, the colony began supplying kemocite to Xindi Council member Degra for "research." This kemocite was the most pure ever ordered, with impurities at less than six parts per million. In October of that year, Captain Jonathan Archer of the Earth ship Enterprise came to the planet, on a tip from Tarquin while searching for the Xindi weapon. He informed Gralik that his facility's kemocite was to be used in the weapon being built to destroy Earth. Gralik assisted Archer in sabotaging the last kemocite shipment to Degra, as he did not want his product to be used for violence. (ENT: "The Shipment")