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Page | 1 <br /> <br />Date: August 1, 2025 <br /> <br /> <br /> <br /> <br /> <br /> <br />Subject: Mount Analysis Report <br /> <br />Carrier Designation: AT&T Mobility Equipment Change-Out <br /> Carrier Site Number: CLL03237 <br /> Carrier Site Name: Orange County Register Building <br /> Carrier FA Number: 10087154 <br /> Carrier IWM Number: WSLOS0068739 <br /> Carrier PACE Number: MRLOS116193 <br /> <br />Engineering Firm Designation: Ladera Engineering Group Project No.: 3328 <br /> <br />Site Data: 625 Grand Ave, Santa Ana, Orange County, CA, 92701 <br /> Latitude 33°45’7.49988” Longitude -117°51’2.40012” <br /> <br />Structure Information: Tower Height & Type: 99.0 ft Rooftop <br /> Mount Elevation: 45.0/96.0 ft <br /> Mount Type: Pipe Mount <br /> <br />Ladera Engineering Group is pleased to submit this “Mount Analysis Report” to determine the structural integrity of AT&T Mobility’s antenna <br />mounting system with the proposed appurtenance and equipment addition on the abovementioned supporting tower structure. Analy sis of the <br />existing supporting tower structure is to be completed by others and therefore is not part of this analysis. Analysis of the antenna mounting <br />system as a tie-off point for fall protection or rigging is not part of this document. <br /> <br />The purpose of the analysis is to determine acceptability of the mount stress level. Based on our analysis we have determined the mount stress <br />level to be: <br /> <br /> Pipe Mount Sufficient <br /> <br />This analysis utilizes an ultimate 3-second gust wind speed of 95 mph as required by the 2022 CBC. Applicable Standard references and <br />design criteria are listed in Section 2 - Analysis Criteria. <br /> <br />Mount analysis prepared by: Jordan Everson <br />Respectfully Submitted by: <br />Kevin Diaz, P.E. <br />Kdiaz@laderaeg.com <br /> <br />08/08/25 <br />625 & 625 3/4