Petition of Boston Gas Company d/b/a National Grid for: (1) authorization to issue long-term debt securities in an aggregate principal amount not to exceed $2 billion pursuant to G.L. c. 164, § 14; (2) an exemption from advertising requirements of G.L. c. 164, § 15; and (3) an exemption from the par value requirements of G.L. c. 164, § 15A.