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AIRPORT MASTER PLAN <br />Runway to Parallel Taxiway Separation Standards <br />According for AC 150/5300-13 (current edition) the minimum necessary runway <br />centerline to parallel taxiway centerline separation for a runway with an RDC of C-II <br />is 400 feet. Currently, 630 feet of separation exists between Runway 13/31 and <br />Taxiway Charlie, the parallel taxiway for Runway 13/31. Consequently, Runway <br />13/31 and Taxiway Charlie exceed the minimum centerline-to-centerline separation <br />standard by 230 feet. <br />Minimum separation for a runway with an RDC of B-II is 240 feet from the runway <br />centerline to the parallel taxiway centerline. Currently, 630 feet of separation exists <br />between Runway 8/26 and Taxiway Alpha, the partial parallel taxiway for Runway <br />8/26, which exceeds the minimum required separation distance by 390 feet. No <br />parallel taxiway exists for Runway 17/35. The minimum runway centerline to <br />parallel taxiway centerline separation standard for a runway with a C-III RDC is 400 <br />feet according to current FAA standards. All the runways at the San Marcos <br />Regional Airport should be able to meet this standard without requiring any <br />modifications. <br />Building Restriction Line <br />According to AC 150/5300-13 (current edition) the Building Restriction Line (BRL) <br />represents the boundary where it is generally suitable or unsuitable to develop <br />buildings such as hangars, terminals, or other facilities. The BRL is established <br />nway Protection Zones <br />(RPZs), Obstacle Free Zones (OFZ), Object Free Areas (OFA), runway visibility zones, <br />NAVAID critical areas, and approach surfaces. Based on existing instrument <br />approach procedures, the primary surface for all the runways at the San Marcos <br />Regional Airport are 1,000 feet wide (500 feet each side of the runway centerline) <br />and extend 200 feet beyond each runway end. <br />The transitional surface slopes up at a 7:1 ratio from the edge of the primary <br />surface to the horizontal surface which is 150 feet above airport elevation (airport <br />elevation is 594.7 feet MSL). Buildings should not penetrate the transitional surface <br />at any point. Based on the dimensions of the primary surface and transitional <br />surface, the 35.0-foot BRL for all the runways at the airport are 745 feet from <br />runway centerline. <br />Facility Requirements Chapter Page 24 of 70 <br />October 2020 <br /> <br />