Summit Natural Gas Share: Propane & Natural Gas and Service Summit Natural Gas Visit Website 7810 Shaffer Parkway, Ste. 120 Littleton, CO 80127 800-927-0787 ext 642 800-927-0787 ext 642 (573) 374-1240 (fax) Hours: 8:00 A.M. - 5:00 P.M. Monday - Friday About About Natural Gas Call The Office (417) 683-4594 Office Location 810 Collins Avenue Ava, MO 65608 Email Us director@avachamber.org