Applications for exemption under § 152.3 shall contain, or there shall be separately filed, a certificate from the appropriate State Commission that the natural-gas (a) rates (including rates for sales for resale), (b) service, and (c) facilities of the applicant are subject to the regulatory jurisdiction of the State Commission and that the State Commission is exercising such jurisdiction.
18 C.F.R. §152.4
Sec. 1(c), 68 Stat. 36; 15 U.S.C. 717(c)