CREATE TABLE table_4489 ("Region" TEXT, "Operator" TEXT, "Licence award date" TEXT, "On air date" TEXT, "Closure date" TEXT)

What was the license award date for the ensemble from South Wales and the Severn Estuary that was on air in July 2001?
SELECT "Licence award date" FROM table_4489 WHERE "On air date" = 'july 2001' AND "Region" = 'south wales and the severn estuary'
SELECT "Licence award date" FROM "table_4489" WHERE "On air date" = 'july 2001' AND "Region" = 'south wales and the severn estuary'