CREATE TABLE table_56839 ("CERCLIS ID" TEXT, "Name" TEXT, "County" TEXT, "Proposed" TEXT, "Listed" TEXT, "Construction completed" TEXT, "Partially deleted" TEXT, "Deleted" TEXT)

What CERCLIS ID is Deleted of 04/07/2008?
SELECT "CERCLIS ID" FROM table_56839 WHERE "Deleted" = '04/07/2008'
SELECT "CERCLIS ID" FROM "table_56839" WHERE "Deleted" = '04/07/2008'