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<br />Page | 1 <br /> <br />Date: August 13, 2025 <br /> <br /> <br /> <br /> <br /> <br /> <br />Subject: Mount Analysis Report <br /> <br />Carrier Designation: AT&T Equipment Change-Out <br /> Carrier Site Number: CLL03238 <br /> Carrier Site Name: DOWNTOWN SANTA ANA <br /> Carrier FA Number: 10087167 <br /> Carrier IWM Number: WSLOS0069199/WSLOS0069078/WSLOS0069621 <br /> Carrier PACE Number: MRLOS116305/MRLOS116248/MRLOS115421 <br /> <br /> Carrier USID: 11691 <br /> <br />Engineering Firm Designation: Ladera Engineering Group Record ID: 3321 <br /> <br />Site Data: 217 & 217 3/4 North Main St, Santa Ana, Orange County, CA, 92701 <br /> Latitude 33°44’49.3” Longitude 117°52’02.9” <br /> <br />Structure Information: Structure Type: Building <br /> Mean Roof Height: 49.0 ft. <br />Mount Type: Mount Frame <br />RAD Centerline: 52.0 ft. <br /> <br />Ladera Engineering Group is pleased to submit this “Mount Analysis Report” to determine the structural integrity of AT&T’s antenna mounting <br />system with the proposed appurtenance and equipment addition on the abovementioned supporting tower structure. Analysis of the existing <br />supporting tower structure is to be completed by others and therefore is not part of this analysis. Analysis of the antenna mounting system as a <br />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 /> Mount Frame Sufficient <br /> <br />This analysis utilizes an ultimate 3-second gust wind speed of 95 mph as required by the 2022 California Building Code. Applicable Standard <br />references and design criteria are listed in Section 2 - Analysis Criteria. <br />Respectfully Submitted by: <br />Kevin C. Diaz, P.E. <br />kdiaz@laderaeg.com <br />HAR <br />08/13/25