Visitors to the Flight 93 National Memorial in Shanksville, Pa., Monday Sept. 10, 2007 participate in a remembrance at sunset on the eve of the sixth anniversary of United Flight 93 crashing here on Sept. 11, 2001.
The 40 passengers and crew killed have been called heroes for preventing the attack.
Salazar said Monday that the National Park Service has reached agreements with eight landowners and that construction is expected to start in November.
Salazar calls the money fair compensation. A department spokeswoman says the agency won't disclose what each owner will receive.
There is a memorial for the victims of Flight 93 here in the Bay Area in Union City.