Nice video. I have passed the abandoned 6 flags amusement park many times.
I hope you had prior written authorization to overfly a oil refinery. Otherwise here's a friendly heads up.............
PilotWeb: Results Page
...............FDC
4/0811 FDC ...SPECIAL NOTICE... THIS IS A RESTATEMENT OF A PREVIOUSLY ISSUED ADVISORY NOTICE. IN THE INTEREST OF NATIONAL SECURITY AND TO THE EXTENT PRACTICABLE, PILOTS ARE STRONGLY ADVISED TO AVOID THE AIRSPACE ABOVE, OR IN PROXIMITY TO SUCH SITES AS POWER PLANTS (NUCLEAR, HYDRO-ELECTRIC, OR COAL), DAMS, REFINERIES, INDUSTRIAL COMPLEXES, MILITARY FACILITIES AND OTHER SIMILAR FACILITIES. PILOTS SHOULD NOT CIRCLE AS TO LOITER IN THE VICINITY OVER THESE TYPES OF FACILITIES..........
It is very dangerous to fly over refineries and chemical plants at lower altitudes. There are EXTREME thermals present. If the bird falls, damage to critical control instrumentation is possible which could lead to catastrophic events.
In addition I saw proprietary processes units that I wager NORCO would not wish filmed or would only allow if they had full prior editing authority(as in taking any film and or sanitizing digital imaging.)
You are fortunate the authorities didn't witness the flight