請問小白兔及其他高手: what is Direct Mail for filing I-485?等等

在downloaded I-485 file, Page 1 首先講:

EFFECTIVE APRIL 1, 2005
DIRECT MAIL INSTRUCTIONS FOR PERSONS FILING FORM I-485
If you live in one of these states or territories, please read this notice to determine your filing location:ALASKA, CALIFORNIA, IDAHO, IOWA, KANSAS, MARYLAND, MISSOURI, MONTANA, NEBRASKA, NEW MEXICO,OKLAHOMA, OREGON, TEXAS, AND WASHINGTON
AS PREVIOUSLY PUBLISHED AND REMAINS IN EFFECT - EFFECTIVE DECEMBER 1, 2004 DIRECT MAIL INSTRUCTIONS FOR PERSONS FILING FORM I-485

請問以上到底是講寄到哪裏? 到底是根據住地還是類別? 加州人的EB1A I-140獲批準後, I-485該寄往何處?
不勝感激!