Draft EA - San Diego International Airport

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SAN DIEGO INTERNATIONAL AIRPORT – PROPOSED RUNWAY 9 DISPLACED THRESHOLD 2.2.1 PROVIDE STANDARD CAT I ILS MINIMUMS FOR AIRPLANE APPROACH CATEGORY D AIRCRAFT AT EXISTING DISPLACED THRESHOLD LOCATION The SDCRAA conducted an obstruction survey to determine the number and type of obstructions that would need to be mitigated in order to meet FAA criteria for a Category D aircraft CAT I instrument approach procedure on Runway 9. The obstruction survey identified one building penetrating the required TERPS surfaces that meet FAA criteria for a Category D aircraft CAT I instrument approach procedure on Runway 9 at the existing runway threshold. Mitigation of this obstruction would require modifying the top eight feet of the building structure so that it does not penetrate the safety surface. Implementation of this alternative would involve legal issues as to the extent of SDCRAA’s authority to force the modification of a privatelyowned structure off-Airport and would be costly if the SDCRAA had to purchase the building and relocate its existing tenants (it should be noted that the FAA does not have authority to affect land use changes off- Airport). Because the building that would require modification is not owned by SDCRAA, and the potential legal and financial issues associated with mitigating this obstruction are complex, this alternative was eliminated from further consideration. 2.2.2 PROVIDE STANDARD CAT I ILS MINIMUMS FOR AIRPLANE APPROACH CATEGORY D AIRCRAFT BY RELOCATING RUNWAY 9 DISPLACED THRESHOLD The SDCRAA also examined two alternatives for relocating the existing Runway 9 displaced threshold. Relocation of the displaced threshold farther down the runway provides additional distance for the TERPS surfaces to clear potential obstructions; however, these alternatives would also shorten the available runway length for landing aircraft. The SDCRAA desires to maintain, to the extent possible, the maximum runway length available for aircraft operations at SDIA. Any increase in the amount of displacement would result in reducing the runway length available for landing, which could affect the payloads and potentially aircraft types able to utilize Runway 9. The SDCRAA examined two alternatives for relocating the displaced threshold; Alternative 1 would relocate the displaced threshold by 300 feet and Alternative 2 would relocate the displaced threshold by 500 feet. Relocating the displaced threshold by a smaller amount than 300 feet would not meet FAA criteria to maintain a CAT I instrument approach procedure at SDIA for airplane Approach Category D aircraft, without additional impacts to structures off-Airport, which SDCRAA determined would be cost prohibitive. Thus, the SDCRAA identified alternatives to relocate the Runway 9 displaced threshold by an additional 300 feet and 500 feet. The 500-foot alternative was examined in case the 300-foot alternative would be too costly to implement (due to clearing of obstructions off-Airport required to meet the CAT I ILS minimums for airplane Approach Category D aircraft). A geographic survey was conducted to identify obstructions for the existing approach to Runway 9 and the proposed displaced threshold relocation for Runway 9. The survey was conducted in early 2012 and submitted to the FAA for approval. The survey identified 37 obstructions penetrating the current 3.22-degree glide slope OCS. The obstructions are located mostly in the Point Loma neighborhood with a maximum penetration of 14 feet. SDCRAA determined that it was not feasible to clear all of the obstructions associated with the existing 3.22-degree glide slope OCS. However, because SDCRAA is proposing to decrease the angle of descent to 3.1 degrees with the proposed displaced threshold, the removal of all the obstructions to the Alternatives [2-2] Draft EA
SAN DIEGO INTERNATIONAL AIRPORT – PROPOSED RUNWAY 9 DISPLACED THRESHOLD current 3.22-degree glide slope OCS was not needed; only the ones that would impact the proposed 3.1 degree glide slope OCS. As a result, every obstruction to the proposed 3.1-degree glide slope OCS (based on an additional 300-foot displaced threshold) was removed by December 2012. Because Alternative 1, the 300- foot relocated displaced threshold alternative, would meet FAA criteria for providing CAT I ILS minimums for airplane Approach Category D aircraft on Runway 9, and clearance of the obstructions was feasible, this alternative was considered to be a reasonable alternative for meeting the purpose and need of the Proposed Action and was retained for detailed analysis. It was estimated by SDCRAA that the associated costs for lighting (navaids) and marking changes associated with Alternative 2 would be $300,000-$400,000 higher than Alternative 1 and would result in an additional 200-foot reduction in runway landing length. Based on this analysis, and because Alternative 1 was determined to be feasible, Alternative 2, the 500-foot relocated displaced threshold alternative, was eliminated from further consideration. 2.2.3 USE OF OTHER AIRPORTS The purpose and need for the proposed improvement are to provide facilities that would meet FAA criteria and maintain a CAT I precision instrument approach to Runway 9 for Category D aircraft. The proposed improvement is needed to improve and support existing and future operations that are forecasted to occur at SDIA; use of other airports for the proposed improvements would not satisfy the purpose and need for this project. If the capability of handling CAT I instrument approach procedures for Category D aircraft are lost at SDIA, flights would either need to be held at the originating location before take-off or placed in a holding pattern until weather and visibility conditions improve or be diverted to other airports during CAT I weather conditions. However, the closest airports to SDIA with similar runway lengths able to accommodate the aircraft fleet serving SDIA are Long Beach Airport, LA/Ontario International Airport, and Los Angeles International Airport, all of which are greater than 100 miles away. This would result in inconvenience to passengers and additional costs to the airlines and aircraft operators. Brown Field, located 1.5 miles north of the U.S.-Mexico border in the Otay Mesa community of the City of San Diego, has a nearly 8,000-foot long runway. The SDCRAA examined whether Brown Field would be able to accommodate commercial service aircraft as part of the 2010 Regional Aviation Strategic Plan (RASP). The FAA concluded that precision instrument approaches to the primary runway are not feasible due to extremely high terrain and the location of the Mexican border (sufficient distance does not exist for aircraft to execute appropriate approach procedures without flying over Mexican airspace which is prohibited in this area due to aircraft operations at General Abelardo L. Rodriguez International Airport). 2.2.4 NO ACTION ALTERNATIVE The No Action alternative would result in no change in location for the existing Runway 9 displaced threshold, and would result in the potential loss of the Runway 9 CAT I instrument approach procedure for Category D aircraft, if FAA revokes the waiver currently granted to SDIA. The loss of the CAT I instrument approach to Runway 9 for Category D aircraft would be detrimental to airline and air cargo operators operating at SDIA during inclement weather or poor visibility conditions. Due to SDIA’s location along the Pacific coast, it is Draft EA Alternatives [2-3]
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Appendix A Agency Coordination
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Ms. Lennox South Coastal Informatio
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October 25, 2011 VIA E-MAIL Califor
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Appendix B Noise Methodology
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14 CFR Part 150 Update August 2009
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MISSION BEACH PACIFIC BEACH MISSION
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Appendix C Land Use Assurance for S
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San Diego County Regional Airport A
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WELCOME Northside Improvements San
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3 Overview 1. Purpose of Scoping Me
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5 2. Proposed Action San Diego Inte
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7 2. Proposed Action Specific proje
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2. Proposed Action Preliminary Purp
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11 3. Environmental Review Process
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Environmental Impact Categories Con
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15 4. Federal Actions • Approval
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Comments
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SAN DIEGO COUNTY REGIONAL AIRPORT A
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SCOPING MEETING - 11/16/2011 Page 6
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Draft EA - San Diego International Airport

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