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San Joaquin County Council of Governments Member Agencies:Cities of Escalon,Lathrop,Lodi,Manteca,Ripon,Stockton,Tracy,County of San Joaquin February 7, 1991 Mr. Steven St. Sure San Joaquin County Planning Division 1810 East Hazelton Avenue Stockton, CA 95205 RE: UP-91-14 Hmong Mission and Christian Alliance Church Stockton Metropolitan Airport Dear Mr. St. Sure: Thank you for referring the above-referenced proposal to the San Joaquin County Airport Land Use Commission for review and comment. The property is located 10,000 feet northwest of the Stockton Metropolitan Airport's 11-29 runway, partly within the FAR Part 77 Horizontal Imaginary Surface and partly within the Conical Imaginary Surface. The ALUC staff concerns relate to the noise sensitivity of the proposed uses, the potential of the retention pond to pose a bird hazard and the location of school facilities within 2 miles of the airport. This site is not within the high noise level noise contour, 65dB CNEL and above, but is subject to occasional overflight and single event disturbances. Churches and schools are considered noise sensitive uses and should be aware of these potential disturbances. For future protection of the airport, the ALUC recommends that the applicant be required to file an Avigation and Hazard Easement in favor of San Joaquin County and sign a noise disclosure statement, both of which will be recorded as deed restrictions and/or C.C. and R.'s applicable to the property in perpetuity to all successor property owners. This request corresponds to that of Stockton Metropolitan Airport. The site plan indicates that a retention pond is planned on the property. Retention ponds and other bodies of water tend to attract birds and thereby pose a hazard to aircraft. The ALUC recommends that the applicant provide protective netting and/or assure that the pond drains in 24 hours under normal conditions and within 48 hours in storm conditions to prevent the creation of a bird hazard. Finally, public schools within 2 miles of an airport runway must be evaluated by the State Department of Transportation, Division of Aeronautics as to their safety and high noise levels. In general, public schools may not be located directly under flight paths. The private school facilities in this site plan are not located under a flight path, so the safety hazards are minimal. Also, as mentioned above, noise levels are not in the prohibited range (60dB and above), but occasional overflight may create single event noise disturbances. 1860 E.Hazelton Avenue • Stockton,California 95205 • (209)468-3913 FAX: (209)468-3330 Regional Transportation Planning Agency,Local Transportation Authority,Congestion Management Agency,Airport Land Use Commission