Scoping Process to Develop Air Tour Management Plan  Pursuant to a 2000 law, the FAA and NPS are beginning a rulemaking process respecting commercial air tours over the Pt Reyes National Seashore and GGNRA.  Seashore Superintendent Cicely Muldoon explains what's at stake, and Gordon Bennett of Save our Seashore calls for appropriate limits in numbers, flight elevations and noise levels of tour aircraft. Both urge participation in the scoping process, which includes public meetings August 16 and 17 in San Francisco and Sausalito, and opportunities for written and on-line comments until September 28 (extended to October 21).  George Clyde reports.