X0101 EFFECT 33 LIVE 2009-04-20 10:00:00

S-3

0001066107 EL PASO CORP/DE 333-158205 0000200155 COLORADO INTERSTATE GAS CO 333-158205-06 0001459406 COLORADO INTERSTATE ISSUING Corp 333-158205-05 0000031986 EL PASO NATURAL GAS CO 333-158205-04 0000092232 SOUTHERN NATURAL GAS CO 333-158205-03 0001416196 Southern Natural Issuing CORP 333-158205-02 0000097142 TENNESSEE GAS PIPELINE CO 333-158205-01