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<br />BC Architects Engineers, PLC 5661 Columbia Pike, Suite 200, Falls Church, VA 22041-2868 Tel (703) 671-6000 Fax (703) 671-6300 <br />May 8, 2025 <br /> <br />Ms. Linda Renfroe <br />Amentum <br />2 Ash Street, St # 3000 <br />Conshohocken, PA 19428 <br /> <br />RE: FA Code – 10087160 <br />PTN – 3551A1F849 <br />Site ID – SICA001875 <br />Site Address – 2120 ½ South Bristol, Santa Ana, CA 92704 <br /> <br />Ms. Renfroe, <br />Pursuant to your request, we have completed the analysis of the existing antenna sector mounts and <br />all associated connections and incidental components for the installation of proposed equipment at <br />the above referenced site, as shown on project documents. AT&T’s proposed scope of work consists <br />of installing (3) panel antennas. The proposed installation will result in a total of (15) panel antennas, <br />(15) RRUs, and (4) DC6s. <br />This is to certify that to the best of my knowledge and professional opinion, the antenna support <br />system components have been analyzed in accordance with the applicable codes and standards, as <br />required by the IBC-2021, ASCE 7-16, and TIA-222-H. Based on the 3-D structural analysis software <br />and our calculations, the existing antenna sector mounts have adequate capacity to support the <br />proposed loads and PASS at 87.2%. <br />If I can be of further assistance, please feel free to contact me. <br />Sincerely, <br /> <br />Rama Pranav Kristam, P.E. <br />Principal Member of BC Architects Engineers, PLC