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r-- /"""", '-j 2 AERONAUTICAL STUDY NUMBER 96-ASW-I075-0E The proposed construction would be located approximately 2.09 nautical miles (NM) northeast of the La Porte Muni Airport, La Porte, Texas. It would exceed the obstruction standards of Title 14, Code of Federal Regulations, Part 77 as follows: @ Section 77.23(a)(2) by 16 feet - a height that exceeds 200 feet above ground level within 3 NM as applied to the La Porte Municipal Airport. The proposal was not circularized to the public for aeronautical comment because it would be located in proximity to existing structures of comparable heights, would have no greater effect on aeronautical operations than the existing structures, and there is no plan on file with the Federal Aviation Administration (FAA) to either alter or remove the existing structures. Aeronautical study disclosed that the proposed structure would have no effect on any existing or proposed arrivaL departure, or en route instrument flight rules, operations, procedures, or minimum flight altitudes. Study for possible visual flight rules (YFR) effect disclosed that the proposed structure would have no effect on any existing or proposed arrival or departure VFR operations or procedures. It would not conflict with airspace required to conduct normal VFR traffic pattern operations at any known public use or military airports, In addition, the proposed structure would not penetrate those altitudes normally considered available to airmen for VFR en route flight. The cumulative impact of the proposed structure, when combined with other existing structures, is not considered significant. Study did not disclose any adverse effect on existing or proposed public-use or military airports or navigational facilities. Nor would the proposal affect the capacity of any known existing or planned public-use or military airport. Therefore, it is determined that the proposed construction would not have a substantial adverse effect on the safe and efficient utilization of the navigable airspace by aircraft or on any air navigation facility and would not be a hazard to air navigation. The proposed structure will be appropriately obstruction marked and lighted to make it more conspicuous to airmen should circumnavigation be necessary. This determination does not include temporary construction equipment such as cranes, derricks, etc., which may be used during the actual construction phase of this proposal. Such equipment which has a height greater than the proposed structure requires separate notice. In this instance, the temporary construction crane has been treated in aeronautical study 96-ASW-1146-0E.