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05/29/2009 10:2.7 FAX 909 396 1768 STIRRAT & ASSOC. <br />0 <br />Federal Aviation Administration <br />Air Traffic Airspace Branch, ASW -520 <br />2601 Meacham Blvd. <br />Fort Worth, X 76137-0520 <br />Issued Date: 05/29/2009 <br />Bryan A. Stirrat & Associates <br />Scott Angus <br />1360 Valley Vista Drive <br />Diamond Bar, CA 91765 <br />T, I J1 A) 4 a -Y-1 i %13 r <br />lih 001 <br />Aeronautical Study No. <br />2009 -AWP -2166 -OE <br />The Federal Aviation Administration has conducted an aeronautical study under the provisions of 49 U.S.C., <br />Section 44718 and if applicable Title 14 of the Code of Federal Regulations, part 77, concerning - <br />Structure; Drilling Rig Drill Rig 36 <br />Location: Stockton, CA <br />Latitude: 37-52-47.30N NAD 83 <br />Longitude: 121-11-29.08W <br />Heights: 70 feet above ground level (AGL), <br />172 feet above mean sea level (AMSL) <br />This aeronautical study revealed that the temporary structure oi <br />not be a hazard to air navigation provided the following con 'tic <br />Based on this evaluation, marking and lighting are notneces aj* <br />and/or lighting are accomplished on a voluntary basis, <br />we recorr <br />accordance with FAA Advisory circular 70/7460-1 K Change 2. <br />See attachment for additional condition(s) or information. <br />Any beigbt exceeding 70 feet above ground level (J 72 feet Ei <br />adverse effect and would warrant a Determination of Hazard <br />This determination expires on 11/29/2009 unless extended, <br />NOTE- REQUEST FOR EXTENSION OF THE, EFFEC' <br />MUST BE POSTMARKED OR DELIVERED TO THIS <br />EXPIRATION DATE. <br />This determination is based, in part, on the foregoing des< <br />heights. Any changes in coordinates and/or heights will v, <br />alteration, including increase to heights, requires separate <br />s not exceed obstruction standards and would <br />i(s), if any, is (are) met: <br />for aviation safety. However, if marking <br />vend it be installed and maintained in <br />re mean sea level), will result in a substantial <br />Air Navigation. <br />or terminated by the issuing office. <br />PERIOD OF THIS DETERMINATION <br />'CE AT LEAST 15 DAYS PRIOR TO THE <br />on which includes specific coordinates and <br />,-iis determination. Any future construction or <br />-e to the FAA. <br />This determination does include temporary consuvetion equil rnent such as cranes, derricks, etc., which may be <br />used during actual construction of astructure. However, this equipment shall not exceed the overall heights as <br />indicated above. Equipment which has a height greater than the studied structure requires separate notice to the <br />FAA. <br />�01 <br />