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AIRPORT MASTER PLAN <br />TABLE 2-5 <br />TAXIWAYS <br />SAN MARCOS REGIONAL AIRPORT <br />Taxiway Width (ft)MaterialConditionTDGLighting <br />A (ramp area)75ConcretePoor3MITL <br />A (approach of RWY 8)50AsphaltFair3MITL <br />B40AsphaltFair2MITL <br />C (north of TWY A)42AsphaltFair2MITL <br />C (south of TWY A)50ConcretePoor3MITL <br />E42AsphaltFair2MITL <br />F50AsphaltFair3MITL <br />J50AsphaltGood3MITL <br />K35ConcreteGood2MITL <br /> <br />Source: Garver. <br />NOTE: Pavement condition determinations were made based on general observations by Garver, <br />input from the City of San Marcos, airport management, and TxDOT, and previous pavement studies. <br />A Pavement Condition Index report was completed by the Texas A&M Transportation Institute in 2017 <br />and an independent pavement evaluation was completed by Fugro USA Land, Inc. in 2015. Good, Fair, <br />and Poor rating classifications are defined by the FAA under AC 150/5320-17A. In general, pavement <br />- <br />preservative treatments, crack sealing, and surface treatment, pav <br />structural improvements. <br />Aircraft Design Group (ADG) Standards for Taxiways <br />Another aspect of taxiway layout and design are the establishment and protection <br />of Taxiway Safety Areas (TSA) and Taxiway Object Free Areas (TOFA). The TSA is a <br />defined surface alongside the taxiway that is prepared and suitable for reducing the <br />risk of damage to an aircraft deviating from the taxiway. The purpose of the TSA is <br />to protect an aircraft from damage if the aircraft leaves the taxiway for any reason. <br />The TOFA is an area centered on a taxiway or taxilane centerline that must be kept <br />clear of objects except those objects that need to be located in the TOFA for air <br />navigation or aircraft ground maneuvering purposes. The size of both of the TSA <br />and TOFA are based on the ADG (described in Table 2-2) of the critical aircraft <br />expected to use each taxiway. Currently, the Taxiway Safety Area (TSA) is 79 feet <br />wide and the Taxiway Object Free Area (TOFA) is 131 feet wide for all the taxiways <br />ned on <br /> <br />Inventory Chapter Page 16 of 52 <br />October 2020 <br /> <br />