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Mayor Sheila Young • • July 15, 2004 Page 2 of 9 more likely than other potential operating scenarios— but was analyzed in the 1996/97 EIR in order to identify potential effects if such a scenario were to occur. The area of San Leandro closest to the Airport, which is located directly underneath the "straight in" arrival patterns to 27L, is an industrial area, whereas the "straight in" arrival pattern to 27R goes over the residential area of Timothy • Drive and adjacent to homes in Davis West. To decrease the noise from the B737 arrivals in those residential areas under the worst case scenario studied in the 1996/97 EIR if such a scenario were to occur, the EIR suggested taking action to make it more likely that those aircraft landed on Runway 27L instead of 27R, which would move the associated noise contour towards the industrial area. Operationally, this also is the preferred North Field runway for large aircraft as 27L is approximately 700 feet longer than 27R and larger aircraft prefer landing on the longer runway. Runways 27R and 27L are only 1000 feet apart; therefore, flights could still be seen, but noise would be decreased somewhat. 2) Table S -3 of the 2003 Draft Supplemental Environmental Impact Report, Airport Development Program, in a Summary of Significant Impacts and Mitigation Measures for the Airport Development Program, lists as its first item "Aircraft noise impacts to residential areas of the Cities of Alameda and San Leandro in 2010." The listed Mitigation Adopted by Port states: Noise insulation; redirect commercial passenger jet aircraft to Runway 27L; and continue current noise abatement policies. Answer: Table S -3 carries over all mitigation measures identified in the 1996/97 EIR and approved by the Port when it approved the ADP in 1997. Please note that under the column heading "Increase in Severity," the response is not only "no" but that the severity is "reduced" — meaning that it is less than was stated in the 1996/97 EIR. The noise insulation refers to continuing the residential sound insulation program on Bay Farm Island, which will ensure the homes are compatible with state and federal guidelines. (This program follows state and federal eligibility criteria for insulation, which includes homes located within the 65 decibel CNEL contour. No San Leandro homes fall within the 65 dB contour.) The table also reassures the community that the Airport will continue its existing noise abatement procedures. The issue of "redirecting commercial jet aircraft arrivals to 27L" also is addressed on Page 3 -29 of the 2003 SEIR's Response to Comments for the Supplemental Environmental Impact Report (SEIR). It explains here that the scenario described in the 1996/97 EIR where some pilots of arriving B737 might choose to land on Runway 27L is no longer considered likely to occur. One reason is that based upon detailed analysis of aircraft fleets and load factors, the number of projected future aircraft operations was decreased in the 2003 SEIR as