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HomeMy WebLinkAbout1671 E St Andrew Pl - PlanCOVER PAGE SHEET TITLE SHEET NUMBER STAMP PV1.0 (TITLE) A1/30/2026FOR REVIEW REVDATEDESCRIPTION REVISIONS 24"X36" 16 7 1 E 16 7 1 E S T A N D R E W P L , SA N T A A N A 9 2 7 0 5 AH J : SA N T A A N A PR O J E C T 358 Coral Circle, El Segundo, CA 90245 Ben Lochtenberg CSLB C10 License # 992157 Phone No: (310) 376-8740 DRAWN BY A. CRUZ PROJECT ENGINEER ENGINEERING@XEROSOLAR.COM SCOPE OF WORK: (129) PV MODULES (LONGI LR5-72HBD-545M) SYSTEM SIZE: (70.305) kW DC STC, (63.488) kW AC CEC (1) SOL-ARK 60K-3P-480V INVERTER B4/2/2026CLARIFYING NOTES ADDED INSTALLATION MANUAL(S) TO WHICH THE EQUIPMENT HAS BEEN LISTED, INCLUDING PROJECT DESCRIPTION: A ROOF MOUNTED SOLAR SYSTEM TO BE INSTALLED ON THE COMMERCIAL BUILDING BUILDING IN SANTA ANA 92705 THE ENERGY PRODUCED BY THE PV SYSTEM SHALL BE INTERCONNECTED WITH THE UTILITY GRID THROUGH THE EXISTING ON SITE ELECTRICAL EQUIPMENT VIA A BACK-FED BREAKER IN AN EXISTING BREAKOUT PANEL PV1.0 (TITLE) 1 VICINITY MAP SCALE: NTS APPLICABLE CODES 2025 CALIFORNIA BUILDING CODE 2025 CALIFORNIA ELECTRIC CODE 2025 CALIFORNIA MECHANICAL CODE 2025 CALIFORNIA PLUMBING CODE 2025 CALIFORNIA FIRE CODE 2025 BUILDING ENERGY EFFICIENCY STANDARDS ADDITIONALLY, CONFORM TO ALL LOCAL ORDINANCES AND REQUIREMENTS 2025 SANTA ANA MUNI CODE 2025 CALIFORNIA GREEN BUILDING STANDARD CODE CALIFORNIA ENERGY CODE CALIFORNIA EXISTING BUILDING CODE, WITH LATEST REVISIONS DESIGN CRITERIA WIND SPEED: 94MPH SNOW LOAD: 3PSF EXPOSURE B RISK CATEGORY II HIGH DESIGN TEMPERATURE =35.7°C LOW DESIGN TEMPERATURE = 4.4 °C OCCUPANCY GROUP: WAREHOUSE F-1 ADMIN AREA: B CONSTRUCTION TYPE: TYPE V-B (FULLY SPRINKLERED) ARRAY LOCATION INDEX INDEX NO.DESCRIPTION PV-1.0 TITLE PAGE PV-1.1 CONSTRUCTION NOTES PV-2.0 PLOT PLAN PV-2.1 PV ROOF LAYOUT PV-2.2 ATTACHMENT LAYOUT PV-2.3 STRINGING LAYOUT PV-3.0 ATTACHMENT DETAILS PV-4.0 SINGLE LINE DIAGRAM PV-5.0 SIGNAGE AND ELEVATION PV-6.0 SPEC SHEETS PV-6.1 SPEC SHEETS PV-6.2 SPEC SHEETS PV1.0 (TITLE) 2 AERIAL MAP SCALE: NTS ARRAY LOCATION AHJ DESIGN NOTES ·ELECTRICAL EQUIPMENT WILL NOT ENCROACH ZONING SET BACK. ·FIRE SET BACKS ARE MEASURED FROM THE EXTERIOR LOAD BEARING WALL. ·LADDER ACCESS POINT SHALL NOT BE MARKED ABOVE EXTERIOR WALL OPENING. ·ALL WORK SHALL BE IN COMPLIANCE WITH THE MOST CURRENT SANTA ANA CODES A. GENERAL 1. ALL WORK ON THIS PROJECT SHALL BE PERFORMED IN COMPLIANCE WITH ALL LOCAL, STATE, AND FEDERAL CODES AND REGULATIONS, THE AHJ APPROVED DRAWINGS, IFC DRAWINGS, INSTALLATION MANUALS, MATERIAL SPECIFICATION SHEETS, AND ENVIRONMENTAL, HEALTH, SAFETY (EHS), AND QUALITY REQUIREMENTS, AS APPLICABLE TO EACH CONTRACTORS SCOPE OF WORK. 2. CONTRACTORS', AND CONTRACTORS' EMPLOYEES, SHALL BE DULY LICENSED AND CERTIFIED TO PERFORM THEIR SCOPE OF WORK REQUIRED TO BUILD AND COMPLETE THIS PROJECT. 3. SEE DIAGRAMS AND DETAILS FOR SITE SPECIFIC INFORMATION. 4. THIS PROPOSED PHOTOVOLTAIC SYSTEM IS INTENDED TO CONNECT TO THE EXISTING SITE OR FACILITY ELECTRICAL SYSTEM. THIS CONNECTION SHALL BE IN COMPLIANCE WITH NEC ARTICLE 705.12 "POINT OF CONNECTION" (POC). 5. THIS PROPOSED PHOTOVOLTAIC SYSTEM IS INTENDED TO BE OPERATED IN PARALLEL WITH THE UTILITY SERVICE PROVIDER. ANTI-ISLANDING PROTECTION IS A REQUIREMENT OF UL 1741 AND IS INTENDED TO PREVENT THE OPERATION OF THE SYSTEM WHEN THE UTILITY GRID IS NOT OPERATIONAL. 6. ALL ELECTRICAL COMPONENTS AND MATERIALS SHALL BE LISTED FOR THEIR INTENDED USE AND INSTALLED PER MANUFACTURER SPECIFICATIONS. 7. ALL OUTDOOR EQUIPMENT SHALL MEET APPROPRIATE NEMA STANDARDS. 8. THE CONTRACTOR SHALL CHECK AND VERIFY ALL DIMENSIONS ON THE DRAWINGS, AND LAYOUT ALL AREAS OF THE ARRAY PRIOR TO ANY INSTALLATION WORK IN ORDER TO VERIFY THAT NO DISCREPANCIES, EXISTING CONDITIONS, OBSTRUCTIONS OR SHADING EXIST. IF EITHER EXIST, CONTRACTOR SHALL SUBMIT A RFI TO THE ENGINEER AND INSTALLATION WORK SHALL NOT COMMENCE UNTIL FORMAL DIRECTION IS RECEIVED. 9. THE CONTRACTOR SHALL FURNISH AND INSTALL ALL WORK AS INDICATED ON THE DRAWINGS AND SPECIFICATIONS. 10. THE CONTRACTOR SHALL BE RESPONSIBLE FOR LOCATING AND PROTECTING ANY EXISTING UTILITIES AND EQUIPMENT ENCOUNTERED IN THE WORK AREAS. 11. THE CONTRACTOR SHALL COORDINATE ALL OPERATIONS WITH EQUIPMENT AND INSTALLERS. 12. THE CONTRACTOR SHALL HAVE ALL SWITCHES AND BREAKERS IN THE "OFF" POSITION PRIOR TO RECEIVING PERMISSION TO OPERATE WITH THE EXCEPTION OF WHEN CONDUCTING APPROVED AND CODE COMPLIANT TESTING AND COMMISSIONING. 13. PERMISSION TO OPERATE THE SYSTEM IS NOT AUTHORIZED UNTIL FINAL INSPECTIONS AND APPROVALS ARE OBTAINED. 14. ALL MECHANICAL HARDWARE SHALL BE CORROSION RESISTANT APPROPRIATE FOR SITE CONDITIONS. 15. ALL CONNECTIONS SHALL BE TORQUED PER MANUFACTURER SPECIFICATIONS. IF SNUG TIGHT, THEN FOLLOW MANUFACTURER RECOMMENDATIONS. PROVIDE PERMANENT TORQUE/WITNESS MARKS ON ALL STRUCTURAL, MECHANICAL, AND ELECTRICAL TERMINATING HARDWARE WITH RED PERMANENT PAINT PEN FOR INSPECTION. REMARK TO BE BLUE PERMANENT PAINT PEN. B. PRE-CONSTRUCTION MEETING 1. NO CONTRACTOR SHALL BEGIN CONSTRUCTION WITHOUT FIRST ATTENDING A PRE-CONSTRUCTION MEETING COVERING THE FOLLOWING TOPICS: A. CONTRACTOR'S SCOPE OF WORK B. SITE SPECIFIC EHS PLAN REVIEW C. AHJ APPROVED DRAWINGS D. IFC DRAWINGS REVIEW E. SITE SPECIFIC QUALITY, TESTING, AND COMMISSIONING PLAN REVIEW F. OTHER PROJECT SITE REQUIREMENTS N W S E N W S E SCOPE OF WORK: SOLAR MODULES DC SYSTEM: (129) PV MODULES (LONGI LR5-72HBD-545M) (TOTAL: 3547.93 SQ. FT.) SYSTEM SIZE: (70.305) kW DC STC, (63.488) kW AC CEC (129) AP SMART RSD-S-PLC RAPID SHUT DOWN DEVICES, UL LISTED, CEC 690.12 AND SUNSPEC COMPLIANT (1) AP SMART TRANSMITTER OUTDOOR KIT, NEMA 3R, UL LISTED INVERTER AC SYSTEM: (1) SOL-ARK 60K-3P-480V INVERTER, UL 1741 LISTED (1) AP SMART PLC TRANSMITTER, RSD INITIATION DEVICE, CEC690.15 AND SUNSPEC COMPLIANT (1) NON-FUSED PV AC DISCONNECT,480/277V, 100A, UL LISTED, NEMA 3R ATTACHMENTS AND RAILS: (204) ATTACHMENT POINTS @ 60" O.C. FIRE RATED AND TESTED (1) IRONRIDGE XR10 RACKING SYSTEM GENERAL NOTES SHEET TITLE SHEET NUMBER STAMP PV1.1 (NOTES) A1/30/2026FOR REVIEW REVDATEDESCRIPTION REVISIONS 24"X36" 16 7 1 E 16 7 1 E S T A N D R E W P L , SA N T A A N A 9 2 7 0 5 AH J : SA N T A A N A PR O J E C T 358 Coral Circle, El Segundo, CA 90245 Ben Lochtenberg CSLB C10 License # 992157 Phone No: (310) 376-8740 DRAWN BY A. CRUZ PROJECT ENGINEER ENGINEERING@XEROSOLAR.COM SCOPE OF WORK: (129) PV MODULES (LONGI LR5-72HBD-545M) SYSTEM SIZE: (70.305) kW DC STC, (63.488) kW AC CEC (1) SOL-ARK 60K-3P-480V INVERTER B4/2/2026CLARIFYING NOTES ADDED SCOPE OF WORK 1.THE PROJECT IS NEW PHOTOVOLTAIC SYSTEM CONSISTING OF SOLAR ARRAY(S) AND ASSOCIATED POWER CONDITIONING EQUIPMENT. 2.ALL CONSTRUCTION SHALL COMPLY WITH THE ADOPTED EDITION OF THE INTERNATIONAL BUILDING CODE AND ELECTRIC CODE AS SPECIFIED IN THE PROJECT SPECIFIC NOTES. 3.IT SHALL ALSO COMPLY WITH ALL APPLICABLE CITY, COUNTY, STATE AND LOCAL ELECTRICAL UTILITY CODES, RULES AND REGULATIONS. 4.THE SYSTEM WILL BE INTERCONNECTED TO THE ELECTRICAL UTILITY GRID IN ACCORDANCE WITH THE REQUIREMENTS OF THE ADOPTED ELECTRIC AND THE ELECTRICAL UTILITY COMPANY. 5.THE CONTRACTOR SHALL PROVIDE LABOR FOR CONSTRUCTION OF THE ARRAY AND INSTALLATION OF ALL ELECTRICAL EQUIPMENT. THE CONTRACTOR WILL PROVIDE COMPETENT SUPERVISION FOR THE WORK TO BE ACCOMPLISHED. CONTRACTOR SHALL SUBMIT SHOP DRAWINGS FOR APPROVAL BY OWNER AS REQUESTED. GENERAL 1.THE ACTUAL SYSTEM EQUIPMENT SPECIFICATIONS FOR THE PHOTOVOLTAIC SYSTEM ARE INCLUDED IN THE PV SYSTEM SPECIFICATION ON THE TITLE PAGE AND THROUGHOUT THE DRAWING AS NECESSARY FOR CLARITY.IN ADDITION THE ACTUAL VENDOR SPECIFICATION DATA SHEETS WILL BE INCLUDED AS PART OF THE PERMIT SUBMITTAL. 2.ONLY NEW MATERIAL WILL BE INSTALLED AS PART OF THE PROJECT. ALL NEW INSTALLED EQUIPMENT WILL BE APPROPRIATELY LISTED AND NEMA RATED. ALL NEW EQUIPMENT SHALL HAVE PERMANENT PLASTIC ENGRAVED IDENTIFICATION TAGS INSTALLED. 3.DRAWINGS ARE DIAGRAMMATIC IN NATURE AND CANNOT SHOW EVERY CONNECTION, JUNCTION BOX, WIRE,CONDUIT, ETC. THE CONTRACTOR SHALL BE RESPONSIBLE FOR PROVIDING A COMPLETE AND FUNCTIONAL ELECTRICAL SYSTEM. 4.CONTRACTOR SHALL COORDINATE ALL POWER OUTAGES WITH THE OWNER'S REPRESENTATIVE IN ADVANCE. 5.PANEL DESIGNATIONS SHOWN ON THESE DRAWINGS ARE GIVEN FOR CLARIFICATION OF THE CIRCUITING ONLY AND MAY NOT CORRESPOND TO THE DESIGNATIONS FOUND IN THE FIELD. 6.ELECTRICAL TESTING SHALL BE IN COMPLIANCE WITH NFPA 70E CONDUIT AND WIRE CONDUIT AND CONDUCTORS 1.ALL EXISTING CONDUIT RUNS ARE NOT SHOWN. CONTRACTOR SHALL VERIFY EXISTING CONDUIT LOCATIONS IN FIELD. 2.ALL CONDUCTORS SHALL BE INSTALLED IN A RACEWAY AS SPECIFIED IN THE DRAWINGS. THE EXCEPTION IS PV SOURCE CIRCUIT CONDUCTORS MADE OF PV WIRE CABLE. THESE CONDUCTORS MAY BE EXPOSED WITHIN THE PV ARRAY. 3.INDOOR EMT FITTINGS MAY BE COMPRESSION TYPE OR STEEL SET SCREW TYPE. OUTDOOR EMT FITTINGS MUST BE COMPRESSION RAIN-TIGHT TYPE. 4.A PULL ROPE SHALL BE INSTALLED IN ALL EMPTY CONDUITS. 5.CONDUCTORS MATERIAL, EITHER COPPER OR ALUMINUM IN SPECIFIED IN THE DRAWINGS. CONDUCTOR INSULATION TYPE SHALL BE THHW - 2 UNLESS OTHERWISE NOTED. 6.ALL SERVICE, FEEDER AND BRANCH CONDUCTORS SHALL BE IDENTIFIED TO MATCH THE EXISTING BUILDING OR STRUCTURE IDENTIFICATION SCHEME PER CEC 200.6, 210.5 AND 215.12. WHERE MORE THAN ONE NOMINAL VOLTAGE SYSTEM EXIST IN A BUILDING OR STRUCTURE, EACH UNGROUNDED CONDUCTOR SHALL BE IDENTIFIED BY PHASE AND SYSTEM. THE IDENTIFICATION SCHEME SHALL BE PERMANENTLY POSTED AT EACH PANELBOARD OR SWITCHBOARD. IF THE BUILDING OR STRUCTURE DOES NOT HAVE AN EXISTING SCHEME, USE THE FOLLOWING. 7.CONDUCTORS SIZED #6 AWG AND BELOW SHALL BE COLOR CODED WITH COLORED INSULATION. CONDUCTORS SIZED #4 AWG AND LARGER SHALL BE IDENTIFIED WITH COLORED TAPE AT ALL TERMINATIONS, JUNCTIONS BOXES AND PULL BOXES. ALL CURRENT CARRYING CONDUCTORS #10 AWG AND LARGER SHALL BE STRANDED. 8.ALL ELECTRICAL WIRING AND EQUIPMENT HAS BEEN PROPERLY DESIGNED FOR OVERLOAD PROTECTION 9.WHERE WIRING AND CONDUIT SIZES ARE INDICATED FOR HOMERUNS, THESE SIZES APPLY TO THE ENTIRE LENGTH FROM THE PROTECTIVE DEVICE IN THE PANEL TO THE EQUIPMENT OR LAST WIRING DEVICE. 10.ALL CONDUIT PENETRATIONS THROUGH ROOFS, FLOORS OR WALLS SHALL BE MADE WATER TIGHT BY PROPER FLASHING, CAULKING OR SEALING. 11.WHERE PORTIONS OF A RACEWAY ARE PASSING FROM INTERIOR TO THE EXTERIOR OF A BUILDING OR UNDERGROUND TO ABOVEGROUND, THE RACEWAY SHALL BE FILLED WITH A LISTED PRODUCT THAT IS INTENDED FOR THE APPLICATION NEAR THE TRANSITION TO PREVENT THE CIRCULATION OF AIR, MOISTURE, AND WATER ALL FIXTURES AND DEVICES SHALL BE PROVIDED WITH SUITABLE METAL OUTLET BOXES, CONFORMING TO CEC ARTICLE 314. BOXES SHALL BE SUPPORTED RIGIDLY FROM THE STRUCTURE. 12.ALL UNDERGROUND CONDUITS SHALL BE SCHEDULE 40 PVC. PVC CONDUIT SHALL NOT BE INSTALLED ABOVE GRADE.THE TRANSITION FROM PVC TO METALLIC CONDUIT SHALL BE LOCATED AT GRADE LEVEL. ALL METALLIC CONDUIT AND FITTINGS INSTALLED BELOW GRADE SHALL BE WRAPPED WITH THE LISTED, 20MIL THICK, 2" WIDE TAPE. WRAP TAPE WITH 1" OVERLAP. 13.RACEWAYS SUBJECT TO PHYSICAL DAMAGE SHALL BE RIGID GALVANIZED STEEL CONDUIT. 14.THE CONDUIT ROUTES SHOWN ON THE PLANS ARE APPROXIMATE. THE CONTRACTOR SHALL DETERMINE THE BEST CONDUIT ROUTE BASED ON THE SITE CONDITIONS. THE CONTRACTOR SHALL COORDINATE WITH THE ENGINEER IF THE CONTRACTOR'S PREFERRED CONDUIT ROUTES ARE OTHER THAN WHAT ARE INDICATED ON THE DRAWINGS. GROUNDING 1.THE GROUNDING SYSTEM SHALL MEET THE REQUIREMENTS OF THE CEC AND THE LOCAL ADOPTED CODE. ALL ELECTRICAL EQUIPMENT AND RACEWAYS SHALL BE PROPERLY GROUNDED. 2.AN INSULATED EQUIPMENT GROUNDING CONDUCTOR, IN ACCORDANCE WITH CEC 250.122 AND 690.47, SHALL BE PROVIDED IN ALL CONDUITS WITH CURRENT CARRYING CONDUCTORS. ALL LUGS AND CONNECTORS SHALL BE RATED FOR THE CONDUCTOR MATERIAL AND THE CONDITIONS OF USE. 3.THE GROUNDING RESISTIVITY WILL BE TESTED AFTER INSTALLATION TO CONFIRM 5 OHM OR LESS RESISTANCE FROM RACKING TO GROUND. IF GROUND RESISTANCE IS GREATER THAN 5 OHMS ADDITIONAL GROUNDING WILL BE INSTALLED UNTIL RESISTANCE IS LESS THAN 5 OHMS. EQUIPMENT 1.ALL ELECTRICAL COMPONENTS INSTALLED OUTDOORS, EXPOSED TO WEATHER OR IN DAMP LOCATIONS SHALL BE RATED FOR NEMA 3R OR GREATER. INSTALLATION OF THESE COMPONENTS MUST COMPLY WITH THE MANUFACTURER'S INSTALLATION INSTRUCTIONS. 2.ALL RACEWAYS, CABINETS, BOXES, FIXTURES SHALL BE SUPPORTED FROM THE BUILDING STRUCTURE IN AN APPROVED MANNER. 3.AT THE COMPLETION OF THE PROJECT NEATLY TYPED ACCURATE PANEL BOARD DIRECTORIES INDICATING ALL BRANCH CIRCUITS AND SPARES WILL BE PROVIDED. ALL SPARES SHALL BE LEFT IN THE OFF POSITION. 4.ALL SAFETY SWITCHES SHALL BE HEAVY DUTY TYPE WITH COVER INTERLOCK AND HANDLE LOCK OFF PROVISIONS. SWITCHES SHALL BE MANUFACTURED BY A COMPANY CONSISTENT WITH OTHER INSTALLED EQUIPMENT WHENEVER POSSIBLE. PART NUMBERS, RATING AND FUSING SHALL BE AS SHOWN ON THE DRAWINGS. 5.CONTRACTOR SHALL ENSURE ALL CEC AND MAINTENANCE CLEARANCE REQUIREMENTS ARE MET FOR NEW EQUIPMENT AND MAINTAINED FOR EXISTING EQUIPMENT. 6.CONTRACTOR SHALL FIELD VERIFY EQUIPMENT CLEARANCE AND PLACEMENTS WHILE COORDINATING LOCATORS WITH OTHER TRADES, CONSTRUCTION MANAGERS, AND SITE SUPERVISORS PRIOR TO PURCHASING AND INSTALLING EQUIPMENT. 7.EVERY STRUCTURE AND PORTION THEREOF, INCLUDING NONSTRUCTURAL COMPONENTS THAT ARE PERMANENTLY ATTACHED TO STRUCTURES AND THEIR SUPPORTS AND ATTACHMENTS, SHALL BE DESIGNED AND CONSTRUCTED TO RESIST THE EFFECTS OF EARTHQUAKE MOTIONS IN ACCORDANCE WITH ASCE 7, EXCLUDING CHAPTER 14 AND APPENDIX 11A. THE SEISMIC DESIGN CATEGORY FOR A STRUCTURE IS PERMITTED TO BE DETERMINED IN ACCORDANCE WITH SECTION 1613 OR ASCE 7. 8.ALL CONTROLS AND SWITCHES INTENDED TO BE USED BY THE OCCUPANT OF THE ROOM OR AREA TO CONTROL LIGHTING AND RECEPTACLE OUTLETS, APPLIANCE AND COOLING, HEATING AN D VENTILATING EQUIPMENT, SHALL BE LOCATED NO MORE THAN 48 INCHES MEASURED FROM THE TOP OF THE JUNCTION OR DEVICE BOX NOR LESS THAN 15 INCHES MEASURED TO THE BOTTOM OF THE JUNCTION OR DEVICE BOX ABOVE THE FINISHED FLOOR. 9.ALL RECEPTACLE OUTLETS ON BRANCH CIRCUITS OF 30 - AMPERES OR LESS AND COMMUNICATION SYSTEM RECEPTACLES SHALL BE LOCATED NO MORE THAN 48 INCHES MEASURED FROM THE TOP OF THE RECEPTACLE OUTLET BOX OR RECEPTACLE HOUSING NOR LESS THAN 15 INCHES MEASURED TO THE BOTTOM OF THE RECEPTACLE OUTLET BOX OR RECEPTACLE HOUSING ABOVE FINISHED FLOOR. WIRING DEVICES 1.RECEPTACLES SHALL BE AS DESIGNED ON THE DRAWINGS AND SHOULD BE A BRAND CONSISTENT WITH OTHERS IN THE VICINITY WHENEVER POSSIBLE. 2.ALL WIRING DEVICES SHALL BE PROVIDED WITH APPROPRIATE COVER-PLATES. ANY EMPTY BOXES SHALL HAVE BLANK COVER PLATES. COVER-PLATES SHALL BE LEXAN, PLASTIC OR STAINLESS STEEL IN FINISHED AREA. GALVANIZED COVER-PLATES MAY BE USED IN EQUIPMENT ROOMS. LABELING AND PHASING 1.FOR LABELING USE NUMBERED UV RATED LABELS TO INDICATE STRING NUMBER. 2.AS A SUBSTITUTE FOR LABELS YELLOW TAPE MAY BE USED FOR PHASING 3.EACH METHOD DESCRIBED ABOVE WILL NEED TO BE PERFORMED ON BOTH POSITIVE AND NEGATIVE AT POINTS WHERE CONDUCTORS ARE TERMINATED 2022 CALIFORNIA FIRE CODE SECTION 1205 SOLAR PHOTOVOLTAIC INSTALLATION NOTES: 1.1205.1 GENERAL SOLAR PHOTOVOLTAIC (PV) SYSTEMS SHALL BE INSTALLED IN ACCORDANCE WITH THE CALIFORNIA BUILDING CODE OR CALIFORNIA RESIDENTIAL CODE. THE ELECTRICAL PORTION OF SOLAR PV SYSTEMS SHALL BE INSTALLED IN ACCORDANCE WITH THE CALIFORNIA ELECTRICAL CODE. ROOFTOP-MOUNTED SOLAR PHOTOVOLTAIC SYSTEMS SHALL BE INSTALLED IN ACCORDANCE WITH SECTIONS 1205.2 THROUGH 1205.4.3. GROUND-MOUNTED SOLAR PHOTOVOLTAIC SYSTEMS SHALL COMPLY WITH SECTION 1205.5. 2.BUILDINGS WITH RAPID SHUTDOWN SOLAR PHOTOVOLTAIC SYSTEMS SHALL HAVE PERMANENT LABELS IN ACCORDANCE WITH SECTIONS 1205.4.1 THROUGH 1205.4.3. 3.FOR SOLAR PHOTOVOLTAIC SYSTEMS THAT SHUT DOWN THE ARRAY AND THE CONDUCTORS LEAVING THE ARRAY, A LABEL SHALL BE PROVIDED. THE FIRST TWO LINES OF THE LABEL SHALL BE UPPERCASE CHARACTERS WITH A MINIMUM HEIGHT OF 3/8 INCH (10 MM) IN BLACK ON A YELLOW BACKGROUND. THE REMAINING CHARACTERS SHALL BE UPPERCASE WITH A MINIMUM HEIGHT OF 3/16 INCH (5 MM) IN BLACK ON A WHITE BACKGROUND. THE LABEL SHALL BE IN ACCORDANCE WITH FIGURE 1205.4.1(1) 4.FOR PHOTOVOLTAIC SYSTEMS THAT ONLY SHUT DOWN CONDUCTORS LEAVING THE ARRAY, A LABEL SHALL BE PROVIDED. THE FIRST TWO LINES OF THE LABEL SHALL BE UPPERCASE CHARACTERS WITH A MINIMUM HEIGHT OF 3/8 INCH (10 MM) IN WHITE ON A RED BACKGROUND AND THE REMAINING CHARACTERS SHALL BE CAPITALIZED WITH A MINIMUM HEIGHT OF 3/16 INCH (5 MM) IN BLACK ON A WHITE BACKGROUND. THE LABEL SHALL BE IN ACCORDANCE WITH FIGURE 1205.4.1(2) 5.THE RAPID SHUTDOWN LABEL IN SECTION 1205.4.1 SHALL BE LOCATED NOT GREATER THAN 3 FEET (914 MM) FROM THE SERVICE DISCONNECTING MEANS TO WHICH THE PHOTOVOLTAIC SYSTEMS ARE CONNECTED, AND SHALL INDICATE THE LOCATION OF ALL IDENTIFIED RAPID SHUTDOWN SWITCHES IF NOT AT THE SAME LOCATION. FIRE DEPARTMENT NOTES 1.CODES AND STANDARDS SOLAR PHOTOVOLTAIC POWER SYSTEMS SHALL BE INSTALLED IN ACCORDANCE WITH 2022 CALIFORNIA FIRE, AND 2022 CALIFORNIA ELECTRICAL CODE 2.MARKING 2.1.PV SYSTEMS MUST BE MARKED MARKING IS NEEDED TO PROVIDE EMERGENCY RESPONDERS WITH APPROPRIATE WARNING AND GUIDANCE WITH RESPECT TO WORKING AND AROUND AND ISOLATING THE SOLAR ELECTRIC SYSTEM. THIS CAN FACILITATE IDENTIFYING ENERGIZED ELECTRICAL LINES THAT CONNECT THE SOLAR MODULES TO THE INVERTER, AS THESE SHOULD NOT BE CUT WHEN VENTING FOR SMOKE REMOVAL. 2.2.MAIN SERVICE DISCONNECT THE MARKING SHALL BE PLACED ADJACENT TO THE MAIN SERVICE DISCONNECT IN A LOCATION CLEARLY VISIBLE FROM THE LOCATION WHERE THE LEVER IS OPERATED. 2.3.MARKING FOR DIRECT CURRENT CONDUIT, RACEWAYS, ENCLOSURES, CABLE ASSEMBLIES AND JUNCTION BOXES MARKING IS REQUIRED ON ALL INTERIOR AND EXTERIOR AC/DC CONDUIT, RACEWAYS, ENCLOSURES, CABLE ASSEMBLIES, AND JUNCTION BOXES TO ALERT THE FIRE SERVICE TO AVOID CUTTING THEM. MARKING SHALL BE PLACED ON ALL INTERIOR AND EXTERIOR DC CONDUIT, RACEWAYS, ENCLOSURES, AND CABLE ASSEMBLIES, EVERY 10FEET, WITHIN ONE (1) FOOT AT TURNS AND ABOVE AND BELOW PENETRATIONS AND ALL DC COMBINER AND JUNCTIONS BOXES. 3.FACILITIES WITH UTILITY SERVICES AND PV SYSTEMS DIRECTORY/PLAQUE SHALL BE PROPERLY ORIENTED SO THAT THE PICTURE OF THE BUILDING IS ORIENTED IN THE SAME DIRECTION AS THE BUILDING IN RELATION TO WHERE THE DIRECTORY/PLACARD IS INSTALLED. CHARACTERS SHALL BE READABLE FROM LEFT TO RIGHT. 4.LOCATIONS OF DC CONDUCTORS CONDUIT, WIRING SYSTEMS AND RACEWAYS FOR PHOTOVOLTAIC CIRCUITS SHALL BE LOCATED AS CLOSE AS POSSIBLE TO THE RIDGE OR HIP OR VALLEY AND FROM THE HIP OR VALLEYS AS DIRECTLY AS POSSIBLE TO AN OUTSIDE WALL TO REDUCE TRIP HAZARDS AND MAXIMIZE VENTILATION OPPORTUNITIES. CONDUIT RUNS BETWEEN SUB ARRAYS AND TO dc COMBINER BOXES SHALL BE INSTALLED IN A MANNER THAT MINIMIZES VENTILATION OPPORTUNITIES. CONDUIT RUNS BETWEEN SUB ARRAYS AND TO DC COMBINER BOXES SHALL BE INSTALLED IN A MANNER THAT MINIMIZES THE TOTAL AMOUNT OF CONDUIT THE ROOF BY TAKING THE SHORTEST PATH FROM THE ARRAY TO THE DC COMBINER BOX. THE DC COMBINER BOXES SHALL BE LOCATED SUCH THAT CONDUIT RUNS ARE MINIMIZED IN THE PATHWAYS BETWEEN ARRAYS. DC WIRING SHALL BE INSTALLED IN METALLIC CONDUIT OR RACEWAYS WHEN LOCATED WITHIN ENCLOSED SPACES IN A BUILDING. CONDUIT SHALL RUN ALONG THE BOTTOM OF LOAD BEARING MEMBERS. AOstructures Inc. PO Box 413 Carnelian Bay, CA 96140 916.541.8586 www.AOstructures.com TO:Xero Solar SUBJECT:Roof-top Solar PV Addition - 1671 E St. Andrews Pl. 1671 E St. Andrews Pl., Santa Ana, CA. 92705 SCOPE OF WORK: ● ● PROVIDED INFORMATION: OBSERVED CONDITIONS: CONCLUSIONS: DESIGN CRITERIA: ● Applicable Codes = 2025 CBC, ASCE 7-22 ● Flush mounted rail based racking system w/ maximum allowed module dimensions of 88.8 in x 44.6 in ● Roof Dead Load = 16 psf (Roof A) ● Roof Live Load = 20 psf (reduced where allowed by ASCE7 - 1607.22.3) ● Wind Speed = 95 mph, Exposure B, Risk Category II ● Ground Snow Load = 3 psf - Roof Snow Load = 3 psf (LRFD), 2.1 psf (ASD) Sincerely, Andrew Oesterreicher, P.E. Project Engineer March 2, 2026 AOstructures, Inc. was asked to provide a structural review for the project at the above subject location. The scope of this report is strictly limited to the items listed below and based on the design criteria listed below. See additional limitations in Appendix B. The observed roof framing is described below. If field conditions differ, the contractor shall notify the engineer prior to starting construction. The existing roof framing members of (Roof A) are judged to be adequate to withstand the loading imposed by the installation of the solar panels. No structural retrofits are required. As-built plans were not provided for our review. The findings of this report are based upon a jobsite evaluation of the existing condition of the existing framing system collected by Xero Solar as requested by AOstructures, Inc.. All attached structural calculations are based on the provided information and are only deemed valid if the provided information is true and accurate. The roof framing system of (Roof A) consists of built-up roof atop of plywood roof sheathing. The sheathing is supported by 2x sub-purlins spaced at 24" o.c. which span approxiatmely 8'-0" between pre-manufactured open web steel joists. The joists span between exterior walls or interior joist girders. Exterior walls consist of concrete tilt-up elements conservatively assumed to be 6" thick. Wall panels are approximately 24'-0" tall. The spacing of the solar standoffs shall not exceed 60" o.c. and be staggered. All racking hardware shall be installed per manufacturer specifications and utilized within the manufacturers design limitations based on the design criteria of this report. AOstructures, Inc. assumes no responsibility for hardware installed outside the design & install specifications of the manfacturer. All waterproofing shall be provided by the contractor. Please contact me with any further questions or concerns regarding this project. Analyze the existing structure(s) to see if it is/they are suitable to support the additional weight of the proposed roof mounted solar PV system. Evaluate the connection capacity of the proposed racking system to the existing roof structure. 1671 - Westridge Labs, Santa Ana, CA.xlsx 1 ASCE Hazards Report Address: 1671 E Saint Andrew Pl Santa Ana, California 92705 Standard:ASCE/SEI 7-22 Latitude:33.724493 Risk Category:II Longitude:-117.845992 Soil Class:Default Elevation:79.95381073109404 ft (NAVD 88) Wind Results: Wind Speed 95 Vmph 10-year MRI 66 Vmph 25-year MRI 72 Vmph 50-year MRI 76 Vmph 100-year MRI 81 Vmph 300-year MRI 89 Vmph 700-year MRI 95 Vmph 1,700-year MRI 102 Vmph 3,000-year MRI 106 Vmph 10,000-year MRI 115 Vmph 100,000-year MRI 133 Vmph 1,000,000-year MRI 151 Vmph Data Source: ASCE/SEI 7-22, Fig. 26.5-1B and Figs. CC.2-1–CC.2-4, and Section 26.5.2Date Accessed: Mon Mar 02 2026 Page 1 of 3https://ascehazardtool.org/Mon Mar 02 2026 Value provided is 3-second gust wind speeds at 33 ft above ground for Exposure C Category, based on linear interpolation between contours. Wind speeds are interpolated in accordance with the 7-22 Standard. Wind speeds correspond to approximately a 7% probability of exceedance in 50 years (annual exceedance probability = 0.00143, MRI = 700 years). Values for 10-year MRI, 25-year MRI, 50-year MRI and 100-year MRI are Service Level wind speeds, all other wind speeds are Ultimate wind speeds. Site is not in a hurricane-prone region as defined in ASCE/SEI 7-22 Section 26.2. Page 2 of 3https://ascehazardtool.org/Mon Mar 02 2026 Snow Results: Ground Snow Load, p : 3 lb/ftg 2 20-year MRI Value: 1 lb/ft^2 Winter Wind Parameter: 0.25 Mapped Elevation: 80.1 ft Data Source: ASCE/SEI 7-22, Figures 7.6-1 and 7.6-2 A-D Date Accessed: Mon Mar 02 2026 Values provided are ground snow loads. In areas designated "case study required," extreme local variations in ground snow loads preclude mapping at this scale. Site-specific case studies are required to establish ground snow loads at elevations not covered. Snow load values are mapped to a 0.5 mile resolution. This resolution can create a mismatch between the mapped elevation and the site-specific elevation in topographically complex areas. Engineers should consult the local authority having jurisdiction in locations where the reported ‘elevation’ and ‘mapped elevation’ differ significantly from each other. Ground Snow Loads for IRC only, p :g(asd)2.1 lb/ft 2 The ASCE Hazard Tool is provided for your convenience, for informational purposes only, and is provided “as is” and without warranties of any kind. The location data included herein has been obtained from information developed, produced, and maintained by third party providers; or has been extrapolated from maps incorporated in the ASCE standard. While ASCE has made every effort to use data obtained from reliable sources or methodologies, ASCE does not make any representations or warranties as to the accuracy, completeness, reliability, currency, or quality of any data provided herein. Any third-party links provided by this Tool should not be construed as an endorsement, affiliation, relationship, or sponsorship of such third-party content by or from ASCE. ASCE does not intend, nor should anyone interpret, the results provided by this Tool to replace the sound judgment of a competent professional, having knowledge and experience in the appropriate field(s) of practice, nor to substitute for the standard of care required of such professionals in interpreting and applying the contents of this Tool or the ASCE standard. In using this Tool, you expressly assume all risks associated with your use. Under no circumstances shall ASCE or its officers, directors, employees, members, affiliates, or agents be liable to you or any other person for any direct, indirect, special, incidental, or consequential damages arising from or related to your use of, or reliance on, the Tool or any information obtained therein. To the fullest extent permitted by law, you agree to release and hold harmless ASCE from any and all liability of any nature arising out of or resulting from any use of data provided by the ASCE Hazard Tool. Page 3 of 3https://ascehazardtool.org/Mon Mar 02 2026 ___________________________________________________________________________________________ AOstructures Inc. PO Box 413 Carnelian Bay, CA 96140 916.541.8586 www.AOstructures.com Address: 1671 E St. Andrews Pl., Santa Ana, CA. 92705 Exposure: B Wind Speed: 95 mph Risk Category: II Aerial Image Wind Design 1671 - Westridge Labs, Santa Ana, CA.xlsx 2 AOstructures Inc. PO Box 413 Carnelian Bay, CA 96140 916.541.8586 www.AOstructures.com Per ASCE 7-16 Ꚃ 29.4.3 Wind Speed 95 mph Exposure Category B Roof Shape Monoslope Roof Slope 0 deg Mean Roof Height 25 ft Lp =7.40 ft >6.7, However, no better code reference, OK! ω =10.0 deg < 35 degrees, OK h1 =10 in < 24", OK h2 =25 in < 48", OK hpt =3.50 ft (mean parapet height) An = 29.6 sft Wind Pressure P = qh Kd (GCrn)(Eq. 29.4-5) qh = 0.00256 * Kz * Kzt * Ke * V^2 (Eq. 26.10-1) Kz (Exposure Coefficient) = 0.7 (Table 26.10-1) Kzt (topographic factor) = 1 (26.8.2) Ke (Ground Elevation Factor) = 1 (Table 26.9-1) V (Design Wind Speed) = 95 mph (Fig. 26.5-1) Kd (Wind Directionality Factor) = 0.85 (Table 26.6-1) qh * Kd = 13.75 Ultimate Design Level GCrn = (ɣp) (ɣc) (ɣE) (GCrn)nom (29.4-6) (ɣp) = min(1.2, 0.9+hpt/h) 1.04 (ɣc) = max(0.6 + 0.06Lp, 0.8) 1.04 (ɣE) Array Edge Factor = 1.50 (for uplift loads) 1.00 (for downward loads) qh * Kd * (ɣp) (ɣc) (ɣE) = 22.39 Uplift - Ultimate Design Level 0.6 * qh * Kd * (ɣp) (ɣc) (ɣE) = 13.43 Uplift - ASD Design Level qh * Kd * (ɣp) (ɣc) (ɣE) = 14.93 Downward - Ultimate Design Level 0.6 * qh * Kd * (ɣp) (ɣc) (ɣE) = 8.96 Downward - ASD Design Level Wind Calculations - Tilt-up solar specific racking system Wind Speed Input Variables Design Wind Pressure Calculations Array Configuration Inputs 1671 - Westridge Labs, Santa Ana, CA.xlsx 3 AOstructures Inc. PO Box 413 Carnelian Bay, CA 96140 916.541.8586 www.AOstructures.com Per ASCE 7-16 Ꚃ 29.4.3 Pressure Calculations (ASD Level) Zone(s) = 3 2 1 (GCrn)nom (Fig. 29.4-7) =1.90 1.60 1.10 ASD Uplift Pressure (psf) = 25.5 21.5 14.8 ASD Downward Pressure (psf) = 17.0 14.3 9.9 X Tributary Width (ft) = 5.00 5.00 5.00 Y Tributary Width (ft) = 3.70 3.70 3.70 Tributary Area (sf) = 18.50 18.50 18.50 Footing Uplift (lb) = 314.8 265.1 182.3 Zone Map 2h = 50 ft Ws =188 ft W L =209 ft Wind Calculations - Tilt-up solar specific racking system - continued 1671 - Westridge Labs, Santa Ana, CA.xlsx 4 AOstructures Inc. PO Box 413 Carnelian Bay, CA 96140 916.541.8586 www.AOstructures.com Maximum Demand Uplift = 315 lb (Demand - See Previous Page) Attachment Uplift Capacity =400 lb 400 lb capacity > 314.8 lb demand Demand Capacity Ratio = 78.7%Therefore, OK Maximum Demand Uplift = 315 lb (Demand - See Previous Page) Fastener =#14 Wood Screws into plywood Number of Fasteners =8 Ultimate Capacity of Individual Fastener =350 lb (Per APA) Group Ultimate Capacity = 2800 lb Factor of Safety =3.0 Group Allowable Capacity = 933 lb (Capacity) 933 lb capacity > 314.8 lb demand Demand Capacity Ratio = 33.7%Therefore, OK Fastener Capacity Check - Uplift - Based on Published Ultimate Values Attachment and Fastener Specifications Attachment Capacity Check - Uplift 1671 - Westridge Labs, Santa Ana, CA.xlsx 5 AOstructures Inc. PO Box 413 Carnelian Bay, CA 96140 916.541.8586 www.AOstructures.com Assumptions ● Plywood is laid perpendicular to rafter span direction ● Plywood is a continuous 8'-0" member ● Plywood is in good repair with no damage from moisture/dryrot/fire/etc. ● Plywood has a minimum span rating of 24/0 and a minimum thickness of 15/32" Input Variables Demand Uplift (P) =315.0 lb (See Wind Calcs) Purlin/Joist Spacing =24.0 in Plywood Span Rating =24/0 (Assumed) Plywood Thickness = 15/32 (Assumed) Uplift Demand = 315.0 lb Demand Moment = (5 * P * L) / 32 Pinned/Fixed Condition FbS = (Per APA Table 9 - See Below) Cd = 1.6 (Per APA Table 6) FbS * Cd = Rail Spacing = 44.4 in (Half of a PV Module) Tributary area over which load is applied = Rail Spacing or 4'-0", whichever is less 44.4 in Plywood Moment Capacity = Demand / Capacity Ratio = 73% Results: 1628 lb-in capacity > 1181.3 lb-in demand Therefore, OK Plywood Bending Capacity Check Plywood Bending Capacity Check APA Design Capacity Tables 275.0 lbf-in/ft 440.0 lbf-in/ft 1181.3 lb-in 1628.0 lbf-in Plywood Decking Check.xlsx 1 AOstructures Inc. PO Box 413 Carnelian Bay, CA 96140 916.541.8586 www.AOstructures.com Input Variables Demand Uplift (Punching Shear) =500.0 lb (See Wind Calcs) Purlin/Joist Spacing =24.0 in Plywood Span Rating =24/0 (Assumed) Plywood Thickness = 15/32 (Assumed) Standoff Diameter =7.00 in Punching Shear Demand = 500.0 lb Fv * tv = (Per APA Table 9 - See Below) Cd = 1.6 (Per APA Table 6) (Fv * tv) * Cd = Allowed Shear (punching) = = (Fv * tv) * Cd * Standoff diameter Demand / Capacity Ratio = 65% Results: 772.8 lb capacity > 500 lb demand Therefore, OK APA Design Capacity Tables Plywood Punching Shear Capacity Check Plywood Shear Capacity Check 69.0 lbf/in 110.4 lbf/in 772.8 lb Plywood Decking Check.xlsx 2 AOstructures Inc. PO Box 413 Carnelian Bay, CA 96140 916.541.8586 www.AOstructures.com Roof Live Load = 20 psf 4.00 psf 2.00 1.00 MEP 2.00 1.00 10.0 psf 1.50 MEP 2.00 0.50 14.0 psf 1.00 MEP 0.50 0.50 16.0 psf 16.0 psf Girders Miscellaneous Miscellaneous Roof DL @ Sub-purlins Open Web Joists Miscellaneous Roof DL @ Joists ROOF DEAD AND LIVE LOADS 2x4 Sub-Purlins @ 24"o.c. Note: Per Section 1607.22.3 of 2025 CBC - roof live load is removed in area's covered by PV array when the PV array is less than 24'' above the roof surface. Roof Dead Load (Roof A) Built Up Roof Roof Plywood Total Roof DL (Roof A) DL Adjusted to 0 Degree Slope 1671 - Westridge Labs, Santa Ana, CA.xlsx 6 AOstructures Inc. PO Box 413 Carnelian Bay, CA 96140 916.541.8586 www.AOstructures.com Unobstructed, Slippery Roof Surface?no Roof Slope 0 degrees Risk Category II Assumed Roof R value ≤R-20 3.0 psf (ASCE7 - Eq 7.3-1) 1.00 (ASCE7 - Table 7.3-1) 1.20 (ASCE7 - Table 7-3.3) 2.5 psf (ASCE7 - Eq 7.4-1) 1.00 (ASCE7 - Fig. 7.4-1) 2.5 psf (LRFD) 3.0 psf (ASCE 7.3.3 & Table 7.3-4) 3.0 psf (pmin governs) (LRFD) 2.1 psf SNOW LOADS Roof Snow Load Calculations (ASCE 7-22) pg = Ground Snow Load = pf = 0.7 Ce Ct pg Ce = Exposure Factor = Ct = Thermal Factor = pf = Flat Roof Snow Load = ps = Cspf Cs = Slope Factor = Design Roof Snow Load (ASD) ps = Sloped Roof Snow Load = pmin = Minimum Roof Snow Load = Design Roof Snow Load (LRFD) = 1671 - Westridge Labs, Santa Ana, CA.xlsx 7 AOstructures Inc. PO Box 413 Carnelian Bay, CA 96140 916.541.8586 www.AOstructures.com (Roof A)PASS Dead Load 10.0 psf PV Load 3.0 psf Live Load 20.0 psf Governing Load Combo = DL + LL Total Load 33.0 psf Fb (psi) =f'b x Cd x Cf x Cr (NDS Table 4.3.1) 1000 x 1.25 x 1.5 x 1.15 Allowed Bending Stress = 2156.2 psi (wL^2) / 8 =528 ft# = 6336 in# Actual Bending Stress = (Maximum Moment) / S = 2068.9 psi L/120 (E = 1700000 psi Per NDS) =0.8 in Deflection Criteria Based on = (5*w*L^4) / (384*E*I) = =L/144 >L/120 Therefore OK Allowed Deflection (Live Load) =L/180 0.533 in (5*w*L^4) / (384*E*I) L/238 >L/180 Therefore OK Member Area =Fv (psi) =180 psi (NDS Table 4A) Allowed Shear = Fv * A =Max Shear (V) = w * L / 2 =264 lb Check Bending Stress Simple Span 0.668 in Note: Framing check conservatively assumes full roof live load and PV dead load. Framing checks out, therefore, no further analysis is required. 0.405 in Member Properties Member Size 2x4 S (in^3) 3.06 DF#1 Member Spacing @ 24"o.c. Maximum Moment = Check Deflection I (in^4) 5.36 Lumber Sp/Gr Actual Deflection (Live Load) = Allowed Deflection (Total Load) = Actual Deflection (Total Load) = Allowed > Actual -- 96% Stressed -- Therefore, OK 945 lb Allowed > Actual -- 28% Stressed -- Therefore, OK (True Dimensions) 5.3 in^2 Check Shear w = 66 plf 2x4 Sub-Purlins @ 24"o.c. Member Span = 8' - 0" FRAMING CHECK 1671 - Westridge Labs, Santa Ana, CA.xlsx 8 AOstructures Inc. PO Box 413 Carnelian Bay, CA 96140 916.541.8586 www.AOstructures.com Gravity Check of Existing Wood Framed Roof Framing Members Per the recommendations provided in Ꚃ7.2.1 of SEAOC PV3-2019 Building code = 1994 UBC or more recent? YES (Constructed circa 2003) Roof slope ≥ 1/4" per foot w/ drainage to prevent ponding?Assumed - See discussion in Appendix B - Contractor shall VIF Applicable? YES Roof Dead Load 16.0 psf Roof Live Load 12.0 psf Original Governing Design Weight of Roof - Before PV 28.0 psf Allowed Load (5%) Increase 29.4 psf Roof Dead Load 16.0 psf Roof Live Load 5.0 psf (Conservatively assume a marginal amount of RLL) PV Array 3.0 psf Total Weight of Roof - After PV 24.0 psf Allowed Load (5%) Increase 29.4 psf Total Weight of Roof - After PV 24.0 psf 29.4 psf > 24 psf, Therefore OK Total Weight of Roof - Before PV Total Weight of Roof - After PV Methodology: The proposed PV array is considered to be sufficiently uniformly distributed about the roof surface. Therefore, it is reasonable to assume that the gravity force applied from the PV array will be uniformly distributed back into the underlying roof framing system. The PV array will be no higher than 24" above the roof and be inaccessible as defined per section 1607.14.4.1 (See verbiage below) of the Building Code. Therefore per the same section, the roof framing elements below the PV array do not need to be designed for roof live load. A 5% comparison to the loads prior to the installation of the PV array and after the installation of the PV array is provided. The "after" loads are modified by a change to the load duration factor (Cd) due to a wood roof framing system below. 5% Comparison Exemption of Ꚃ7.2.1 of SEAOC PV3-2019 applicable? 1671 - Westridge Labs, Santa Ana, CA.xlsx 9 AOstructures Inc. PO Box 413 Carnelian Bay, CA 96140 916.541.8586 www.AOstructures.com Per 10% lateral exemption of 2025 CBC - Existing Building Code - Section 503.4 Level Area Weight (psf) Weight (lb) Roof 39,083 sf 16.0 psf 625,328 lb Ceiling 0,000 sf 0.0 psf 0,000 lb Ext. Walls 374 ft 75.0 psf 336,600 lb (24'-0'' Wall Height) Int. Walls 0 ft 10.0 psf 0,000 lb Existing Weight of Effected Building 961,928 lb Weight of PV System (Per Xero Solar) 3.0 psf Approx. Area of Proposed PV System 5061 sf (Includes weight from adjacent system) Approximate Total Weight of PV System 15,183 lb 10% of Existing Building Weight (Allowed) 96,193 lb Approximate Weight of PV System (Actual) 15,183 lb Percent Increase 1.6% LATERAL CHECK OF EXISTING LFRS Proposed Weight of PV System 96193 lb > 15183 lb, Therefore OK 10% Comparison Methodology: The proposed PV array will be uniformly distributed about the roof surface. Therefore, it is reasonable to assume that the seismic force applied from the PV array will be uniformly distributed back into the underlying roof diaphragm and existing lateral force resisting system. The increase in lateral load to the building will be held to a maximum increase of 10% as per the limitations of the 10% exemption of the existing building code. Due to the fact that seismic load is directly proportional to the weight of the building, the net increase in seismic mass of the roof diaphragm will be be held to a 10% increase. The existing seismic mass at the roof diaphragm level is equivalent to the weight of the roof and 1/2 of the walls below. Existing Weight of Effected Building 1671 - Westridge Labs, Santa Ana, CA.xlsx 10 AOstructures Inc. PO Box 413 Carnelian Bay, CA 96140 916.541.8586 www.AOstructures.com Appendix A: Framing Information & Site Specific Pictures 1671 - Westridge Labs, Santa Ana, CA.xlsx 11 AOstructures Inc. PO Box 413 Carnelian Bay, CA 96140 916.541.8586 www.AOstructures.com Appendix B: General Notes GENERAL ● ● ● ● ● ● ● ● ● USER RELIANCE ● ROOF MOUNTED ARRAY'S ● ● ●Provide staggered rails/struts/beams every 100'-0", min. or per manufacturer spec's, whichever is smaller to allow for thermal expansion of the array elements. ● ● ● ● ● ● ● ● ●A gravity check is strictly limited to a 5% analysis as allowed per the 5% exemption of the Existing Building Code. This gravity check does not certify that the existing gravity system is adequately designed for the specific loads from the proposed solar system. In many cases, structures may have insufficient gravity capacity prior to the addition of the proposed solar array. Further engineering of the actual capacity of the structure can be provided per client/owner request. ● Care should be taken during installation to ensure that PV arrays and/or miscellaneous equipment does not preclude drainage of water. Unless otherwise noted, construction material shall be evenly distributed if placed on framed floors or roofs. Loads shall not exceed the allowable loading for the supporting members and their connections. A certfication of the underlying building does not acoount for construction loads or construction staging unless specifically stated otherwise. All fasteners at the roof shall be stainless steel or otherwise be protected by a waterproofing membrane and installed withing the middle 1/3 of the dimensional width of the framing members. Unless otherwise noted, all lags installed in underlying roof framing members shall be embedded (threaded embed) a minimum of 2.5'' into the underlying framing. A lateral check is strictly limited to a 10% analysis as allowed per the 10% exemption of the Existing Building Code. This lateral check does not certify that the existing lateral system is adequately designed for the specific loads from the proposed solar system. In many cases, structures may have insufficient lateral capacity prior to the addition of the proposed solar array. Further engineering of the actual capacity of the structure can be provided per client/owner request. All fasteners shall be a minimum of 6" away from any truss panel or hinge joints, truss plates and/or member ends. Field verify location of fasteners prior to starting construction. All fasteners shall be pre-drilled to avoid splitting existing lumber. It is assumed that there have been no additional loads (HVAC or MEP equipment, additional layers of roofing, etc) added to the building over the course of the structures history. The contractor and/or client shall verify this with the property owner and notify AOstructures, Inc. if additional load has been added to the structure already. Flexible utility connections must be used at any building seismic joint. It is assumed that a standard quality of construction care was used to construct the original building and any subsequent retrofits, additions, remodels or tennant improvements. Roof's are assumed to be installed per manufacturer specifications and in good condition. It is the contractors responsibility to field inspect any and all decking or framing members supporting the proposed PV array for sub-standard construction means, signs of dryrot or water damage, corosion mold, fire damage, etc. and notify AOstructures in writing if any compromised material is found on site prior to starting construction. The contractor shall verify all dimensions, property setbacks, AHJ/HOA CC&R's, elevations and site conditions before starting work and shall notify AOstructure, Inc, (AOstructures) of any discrepancies. All report conclusions represent AOstructures, Inc.'s best professional judgment based upon industry standards. Resolve any conflicts on the drawings with AOstructures, Inc before proceeding with construction. The design criteria used for this project & listed on the first page of the report is based on the engineers best judgement and/or provided by the ATC council. AHJ specific requests may differ. Please contact our team if the design criteria needs to be modified. A site visit was not physically conducted by AOstructures. The accompanying calculations and certification are provided with the understanding that the building is in a good state of repair and was constructed to standard construction practice. It shall be the contractors responsibility to identify any framing irregularities including but not limited to inconsistent framing conditions, water, fire, pest or mold damage, cracked, split, deflecting, removed or otherwise compromised framing members and notify the EOR of any such findings prior to starting construction. AOstructures is not responsible for enforcing safety measures or regulations. The contractor shall design, construct, and maintain all safety devices including shoring and bracing, and shall be solely responsible for conforming to all local, state and federal safety and health standards, laws and regulations. The contractor shall take necessary precautions to maintain and insure the integrity of the structure during construction. If a lawsuit is filed by one of the contractor's or subcontractor's employees, or any one else, the contractor will indemnify, defend and hold the owner and AOstructures harmless of any and all such claims. Any and all waterproofing shall be provided by the contractor. AOstructures is not responsible for waterproofing. All hardware shall be installed per manufacturer specifications and within specified design limitations. AOstructures, Inc. assumes no responsibility for incorrectly installed hardware or hardware installed outside of the manfacturer specifications. AOstructures was engaged by Xero Solar (Client) to perform this assessment. This report and the information therein, are for the exclusive use of the Client. This report has no other purpose and shall not be relied upon, or used, by any other person or entity without the written consent of AOstructures. Third parties that obtain this report, or the information within shall have no rights of recourse or recovery against AOstructures, it’s officers or employees. If an analysis of a supporting stucture is included in our scope of work, the structural assessment only applies to the section of the roof that is directly supporting the proposed solar PV system. No existing solar system or other building components are certified by this report unless specifically mentioned as otherwise. No structural members can be cut for conduit, etc., unless specifically shown. Obtain prior written approval for installation of any additional conduit, etc. It is the contractors responsibility to field verify the location of any and all embedded or hidden rebar, mechanical, electrical or plumbing components prior to starting construction. The anchorage design of miscellaneous equipment (including but not limited to conduit, inverters, batteries, transformers, etc.) is not included in the scope of this review. If required or requested, additional services can be provided from our team to include such elements. 1671 - Westridge Labs, Santa Ana, CA.xlsx 12 BA C K O F B U I L D I N G FR O N T O F B U I L D I N G IN V AC D HP UM UM MS A S E L K L N AD J A C E N T B U I L D I N G SLOPED DRIVEWAY PA R K I N G L O T PA R K I N G L O T PA R K I N G L O T PA R K I N G L O T PARKING LOT PARKING LOT 1671 E ST ANDREWS PL 1661 E ST ANDREWS PL DRIVEWAY DRIVEWAY SHEET TITLE SHEET NUMBER STAMP PV2.0 (SITE PLN) A1/30/2026FOR REVIEW REVDATEDESCRIPTION REVISIONS 24"X36" 16 7 1 E 16 7 1 E S T A N D R E W P L , SA N T A A N A 9 2 7 0 5 AH J : SA N T A A N A PR O J E C T 358 Coral Circle, El Segundo, CA 90245 Ben Lochtenberg CSLB C10 License # 992157 Phone No: (310) 376-8740 DRAWN BY A. CRUZ PROJECT ENGINEER ENGINEERING@XEROSOLAR.COM SCOPE OF WORK: (129) PV MODULES (LONGI LR5-72HBD-545M) SYSTEM SIZE: (70.305) kW DC STC, (63.488) kW AC CEC (1) SOL-ARK 60K-3P-480V INVERTER PLOT PLAN 1 PLOT PLAN WITH ROOF PLAN PV2.0 (SITE PLN) SCALE: 1" = 15.82' LEGEND - SOLAR MODULE PLANNING NOTE: -ALL RELATED EQUIPMENT TO BE EXTERIOR, VISUALLY SCREENED, NOT TO INTRUDE INTO REQUIRED PARKING DIMENSIONS, AND NOT TO PROJECT MORE THAN 2.5 FEET NOR BE CLOSER THAN 3 FEET TO A PROPERTY LINE. -ALL EQUIPMENT WILL BE VISUALLY SCREENED FROM PUBLIC RIGHT OF WAY. SOLAR ARRAY ON 1661 BUILDING UNDER SEPARATE PERMIT PL - 202' -4" PL - 2 5 2 ' - 6 " PL - 183'-7" PL - 1 3 6 ' - 4 " PL - 1 1 1 ' - 1 1 " ELECTRICAL ROOM: (E) MAIN SERVICE ASSEMBLY; (N) SOLAR INVERTER (N) SOLAR AC DISCONNECT (N) PV ARRAY N W S E ROOFTOP HATCH 106'-2" 17 ' - 1 1 " 3' - 0 " 17 ' - 9 " 7' - 4 " 3' - 0 " 7' - 4 " 3' - 0 " 7' - 4 " 27 ' - 1 1 " 188'-0" 124'-11" 113'-6" 7' - 4 " IN V AC D HP UM UM MS A SHEET TITLE SHEET NUMBER STAMP PV2.1 (PV LAYOUT) A1/30/2026FOR REVIEW REVDATEDESCRIPTION REVISIONS 24"X36" 16 7 1 E 16 7 1 E S T A N D R E W P L , SA N T A A N A 9 2 7 0 5 AH J : SA N T A A N A PR O J E C T 358 Coral Circle, El Segundo, CA 90245 Ben Lochtenberg CSLB C10 License # 992157 Phone No: (310) 376-8740 DRAWN BY A. CRUZ PROJECT ENGINEER ENGINEERING@XEROSOLAR.COM SCOPE OF WORK: (129) PV MODULES (LONGI LR5-72HBD-545M) SYSTEM SIZE: (70.305) kW DC STC, (63.488) kW AC CEC (1) SOL-ARK 60K-3P-480V INVERTER ROOF PV LAYOUT 1.38" LEGEND - JUNCTION BOX - MAIN SERVICE PANEL - AC DISCONNECT - UTILITY METER - SKYLIGHT WORKING CLEARANCE (6')- OTHER ELECTRICAL EQUIPMENT MSP UM ACD JB 1 ROOF PV LAYOUT PV2.1 (PV LAYOUT) SCALE: 1" = 12.19' SCOPE OF WORK: (129) PV MODULES (LONGI LR5-72HBD-545M) (TOTAL: 3547.93 SQ. FT.) SYSTEM SIZE: (70.305) kW DC STC, (63.488) kW AC CEC 88 . 8 " LONGI LR5-72HBD-545M MODULES 44.6" N W S E (33) MODULES / ROW (30) MODULES / ROW 1671 - (70.31KW) AND (129) LONGI 545W - 6' ROOF PERIMETER CLEARANCE METAL TRUSS @ 8' O.C. STRUCTURAL BEAM STRUCTURAL BEAM - ROOF OBSTRUCTION SUBPURLIN @ 24" O.C. SHEET TITLE SHEET NUMBER STAMP PV2.2 (ATT. LAYOUT) A1/30/2026FOR REVIEW REVDATEDESCRIPTION REVISIONS 24"X36" 16 7 1 E 16 7 1 E S T A N D R E W P L , SA N T A A N A 9 2 7 0 5 AH J : SA N T A A N A PR O J E C T 358 Coral Circle, El Segundo, CA 90245 Ben Lochtenberg CSLB C10 License # 992157 Phone No: (310) 376-8740 DRAWN BY A. CRUZ PROJECT ENGINEER ENGINEERING@XEROSOLAR.COM SCOPE OF WORK: (129) PV MODULES (LONGI LR5-72HBD-545M) SYSTEM SIZE: (70.305) kW DC STC, (63.488) kW AC CEC (1) SOL-ARK 60K-3P-480V INVERTER ATTACHMENT LAYOUT 88 . 8 " LONGI LR5-72HBD-545M MODULES 44.6" MODULE TYPE, DIMENSIONS & WEIGHT NUMBER OF MODULES = 129 MODULES MODULE TYPE = LONGI LR5-72HBD-545M MODULES DIMENSIONS = 88.8" X 44.6" SQUARE FEET = 27.55 SQFT WEIGHT = 71.2 LBS POUNDS / SQFT = 2.58 LBS/SQFT 1 ATTACHMENT LAYOUT PV2.2 (ATT. LAYOUT) SCALE: 1" = 16' N W S E METAL BEAM WITH VERTICAL BEAM 8"X8", @ 49' O.C. METAL TRUSSES @8' O.C. ICON U-ANCHOR U2600 METAL TRUSS @ 8' O.C. IRONRIDGE XR100 SERIES LR5-72HBD-545M LABEL DETAIL QTY ROOF ATTACHMENT STRUCTURAL TRUSS RACKING SYSTEM PV MODULE 129 N/A N/A 129 AP SMART RSD-S-PLC RAPID SHUTDOWN DEVICE (RSD) 204 N/ACONDUIT N/A 1.38" ROOFTOP CONDUIT, PV ARRAY TO FIRST FLOOR ELECTRICAL ROOM 23'-1" 6' - 1 1 " 2"x4" @ 24"O.C.STRUCTURAL SUBPURLIN N/A SUBPERLIN @ 24" O.C. 5'-0" SHEET TITLE SHEET NUMBER STAMP PV2.3 (STRING LAYOUT) A1/30/2026FOR REVIEW REVDATEDESCRIPTION REVISIONS 24"X36" 16 7 1 E 16 7 1 E S T A N D R E W P L , SA N T A A N A 9 2 7 0 5 AH J : SA N T A A N A PR O J E C T 358 Coral Circle, El Segundo, CA 90245 Ben Lochtenberg CSLB C10 License # 992157 Phone No: (310) 376-8740 DRAWN BY A. CRUZ PROJECT ENGINEER ENGINEERING@XEROSOLAR.COM SCOPE OF WORK: (129) PV MODULES (LONGI LR5-72HBD-545M) SYSTEM SIZE: (70.305) kW DC STC, (63.488) kW AC CEC (1) SOL-ARK 60K-3P-480V INVERTER STRING LAYOUT STRING #1 (15) MODULES STRING #2 (15) MODULES STRING #3 (16) MODULES STRING #4 (17) MODULES STRING #5 (16) MODULES STRING #6 (17) MODULES STRING #7 (16) MODULES STRING #8 (17) MODULES 1 STRING LAYOUT PV2.3 (STRING LAYOUT) SCALE: 1" = 10.67' N W S E STRINGING LEGEND INVERTER #1: SOL-ARK 60K-3P-480V MODULES: (129) LONGI LR5-72HBD-545M 88 . 8 " LONGI LR5-72HBD-545M MODULES 44.6" MODULE TYPE, DIMENSIONS & WEIGHT NUMBER OF MODULES = 129 MODULES MODULE TYPE = LONGI LR5-72HBD-545M MODULES DIMENSIONS = 88.8" X 44.6" SQUARE FEET = 27.55 SQFT WEIGHT = 71.2 LBS POUNDS / SQFT = 2.58 LBS/SQFT 1.38" SOLAR DATA SHEETS SHEET TITLE SHEET NUMBER STAMP PV6.0 A1/30/2026FOR REVIEW REVDATEDESCRIPTION REVISIONS 24"X36" 16 7 1 E 16 7 1 E S T A N D R E W P L , SA N T A A N A 9 2 7 0 5 AH J : SA N T A A N A PR O J E C T 358 Coral Circle, El Segundo, CA 90245 Ben Lochtenberg CSLB C10 License # 992157 Phone No: (310) 376-8740 DRAWN BY A. CRUZ PROJECT ENGINEER ENGINEERING@XEROSOLAR.COM SCOPE OF WORK: (129) PV MODULES (LONGI LR5-72HBD-545M) SYSTEM SIZE: (70.305) kW DC STC, (63.488) kW AC CEC (1) SOL-ARK 60K-3P-480V INVERTER B4/2/2026CLARIFYING NOTES ADDED PV MODULE SHEETS INVERTER SHEETS RSD SHEETS PLC SHEETS RACKING DATA SHEETS SHEET TITLE SHEET NUMBER STAMP PV6.1 A1/30/2026FOR REVIEW REVDATEDESCRIPTION REVISIONS 24"X36" 16 7 1 E 16 7 1 E S T A N D R E W P L , SA N T A A N A 9 2 7 0 5 AH J : SA N T A A N A PR O J E C T 358 Coral Circle, El Segundo, CA 90245 Ben Lochtenberg CSLB C10 License # 992157 Phone No: (310) 376-8740 DRAWN BY A. CRUZ PROJECT ENGINEER ENGINEERING@XEROSOLAR.COM SCOPE OF WORK: (129) PV MODULES (LONGI LR5-72HBD-545M) SYSTEM SIZE: (70.305) kW DC STC, (63.488) kW AC CEC (1) SOL-ARK 60K-3P-480V INVERTER B4/2/2026CLARIFYING NOTES ADDED RACKING AND ATTACHMENT DATA SHEETS SHEET TITLE SHEET NUMBER STAMP PV6.2 A1/30/2026FOR REVIEW REVDATEDESCRIPTION REVISIONS 24"X36" 16 7 1 E 16 7 1 E S T A N D R E W P L , SA N T A A N A 9 2 7 0 5 AH J : SA N T A A N A PR O J E C T 358 Coral Circle, El Segundo, CA 90245 Ben Lochtenberg CSLB C10 License # 992157 Phone No: (310) 376-8740 DRAWN BY A. CRUZ PROJECT ENGINEER ENGINEERING@XEROSOLAR.COM SCOPE OF WORK: (129) PV MODULES (LONGI LR5-72HBD-545M) SYSTEM SIZE: (70.305) kW DC STC, (63.488) kW AC CEC (1) SOL-ARK 60K-3P-480V INVERTER B4/2/2026CLARIFYING NOTES ADDED TO EXISTING LOADS PV BREAKER WILL BE AT THE OPPOSITE END OF THE BUSBAR FROM MCB PER 2022 CEC 705 PV2 (N) PV AC DISCONNECT, 100A, 277V/480V, NEMA 3R, UL LISTED OPTIONAL PULL/JUNCTION BOX NEMA 3R, UL LISTED PV1 PVJ STRINGS-3,4 STRINGS-1,2 = = = = = = = = = ~ (N) INVERTER #1 60K-3P-480V MAX OUTPUT CURRENT, 72.3A PER PHASE, MAX BREAKER SIZE 100A, MAX PV INPUT POWER 78KW, UL 1741 CRD-PCS NON-EXPORT (129) AP SMART RSD-S-PLC RAPID SHUT DOWN DEVICES, 1 MODULE PER DEVICE, CEC690 COMPLIANT (15) LR5-72HBD-545M, (15) LR5-72HBD-545M (E)BREAKER /3P (E) ELECTRICAL SERVICE ENTRANCE EQUIPMENT, 800A, 408V/277V-3PH-4W, NEMA 3R STRINGS-5,6 = = = = STRINGS-7,8 = = = = T-PLC (N) THE APSMART RAPID SHUTDOWN SYSTEM TRANSMITTER-PLC-1P IS PART OF A RAPID SHUTDOWN SOLUTION WHEN PAIRED WITH APSMART RSD-D, A PV MODULE RAPID SHUTDOWN UNIT. WHILE POWERED ON, THE TRANSMITTER-PLC-1P SENDS A SIGNAL TO THE RSD-D UNITS TO KEEP THEIR PV MODULES CONNECTED AND SUPPLYING ENERGY (E)800A /3P (N)100A /3P TO EXISTING LOADS (E)BREAKER /3P TO EXISTING LOADS (E)BREAKER /3P TO UTILITY COM COMS FROM ROOF TO "MS" WILL BE SHIELDED AND PROPERLY LISTED TO RUN WITH AC CIRCUITS WHEN SHARING CONDUIT PER MANUFACTURER SPECIFICATIONS (16) LR5-72HBD-545M, (17) LR5-72HBD-545M (16) LR5-72HBD-545M, (17) LR5-72HBD-545M (16) LR5-72HBD-545M, (17) LR5-72HBD-545M SINGLE LINE DIAGRAM SHEET TITLE SHEET NUMBER STAMP PV4.0 (SLD) A1/30/2026FOR REVIEW REVDATEDESCRIPTION REVISIONS 24"X36" 16 7 1 E 16 7 1 E S T A N D R E W P L , SA N T A A N A 9 2 7 0 5 AH J : SA N T A A N A PR O J E C T 358 Coral Circle, El Segundo, CA 90245 Ben Lochtenberg CSLB C10 License # 992157 Phone No: (310) 376-8740 DRAWN BY A. CRUZ PROJECT ENGINEER ENGINEERING@XEROSOLAR.COM SCOPE OF WORK: (129) PV MODULES (LONGI LR5-72HBD-545M) SYSTEM SIZE: (70.305) kW DC STC, (63.488) kW AC CEC (1) SOL-ARK 60K-3P-480V INVERTER SCALE: NTSPV4.0 (SLD) 1 ELECTRICAL LINE DIAGRAM CALCS (129) LONGI LR5-72HBD-545M MODULES. (129) AP SMART RSD-S-PLC RAPID SHUT DOWN DEVICES SCALE: NTSPV4.0 (SLD) 1 ELECTRICAL LINE DIAGRAM SYSTEM RATING ROOFTOP SOLAR PV KW-AC-CEC (129) PV MODULES x 502.2W CEC-PTC POWER x 0.98% INVERTER CEC EFFICIENCY = 63.49KW PV KW AC (1) INVERTERS x 60k-3P-480VKW CONTINUOUS OUTPUT POWER = 60 KW PV KW DC (129) PV MODULES x 545W MAX POWER = 70.31 KW CONDUIT MAY BE UPSIZED BY INSTALLATION CREW PER MEANS AND METHODS PV WIRE IS TO BE 19 STRAND 1kV RATED ELECTRICAL NOTES ARRAY CONFIGURATION System: 70.305 kW DC-STC, 63.488 kW CEC-AC Total PV Module Qty: 129 Central Inverter Specifications Model Number:SOL-ARK: 60K-3P-480V Max output current 72.30 Amps Nominal output voltage 277V/480 Vac MAX PV INPUT 78,000 W MPPT VOLTAGE RANGE 150-850 V NO. OF MPP TRACKERS 4 MPPT'S NO. OF STRINGS PER MPPT 2 DC INPUTS / TRACKER ELECTRICAL NOTES 1.) DC CONDUCTORS PRESENT. 2.) ALL EQUIPMENT TO BE LISTED BY UL OR OTHER NRTL, AND LABELED FOR ITS APPLICATION. 3.) PV DC CONDUCTORS SHALL BE COPPER, RATED FOR 1000 V AND 90 DEGREE C WET ENVIRONMENT. 4.) WIRING, CONDUIT, AND RACEWAYS MOUNTED ON ROOFTOPS SHALL BE ROUTED DIRECTLY TO, AND LOCATED AS CLOSE AS POSSIBLE TO THE NEAREST RIDGE, HIP, OR VALLEY. 5.) WORKING CLEARANCES AROUND ALL NEW AND EXISTING ELECTRICAL EQUIPMENT SHALL COMPLY WITH NEC 110.26. 6.) DRAWINGS INDICATE THE GENERAL ARRANGEMENT OF SYSTEMS. CONTRACTOR SHALL FURNISH ALL NECESSARY OUTLETS, SUPPORTS, FITTINGS AND ACESSORIES TO FULFILL APPLICABLE CODES AND STANDARDS. 7.) WHERE SIZES OF JUNCTION BOXES, RACEWAYS, AND CONDUITS ARE NOT SPECIFIED, THE CONTRACTOR SHALL SIZE THEM ACCORDINGLY. 8.) ALL WIRE TERMINATIONS SHALL BE APPROPRIATELY LABELED AND READILY VISIBLE. PV Module Specifications Model Number:LONGI LR5-72HBD-545M Weight:71.2 lbs Dimensions:88.8"L x 44.6"W x 1.38"D (In Inch) Power @ STC:545 Watts RATED VOLTAGE(VMPP)41.65 Volts RATED CURRENT (IMPP)12.97 Amps OPEN-CIRCUIT VOLTAGE (VOC)49.5 Volts SHORT CIRCUIT CURRENT (ISC)13.85 Amps Voc Temp Coeff:-0.265 mV/°C NUMBER OF CURRENT CARRYING CONDUCTORS IN EMT 4-6 7-9 10-20 PERCENT OF VALUES .80 .70 .50 AMBIENT TEMPERATURE SPECS RECORD LOW TEMP 4.4°C AMBIENT TEMP (HIGH TEMP 2%)35.7°C CONDUIT HEIGHT 7/8" ROOF TOP TEMP 53°C CONDUCTOR TEMPERATURE RATE 75°C INVACD HPUM UM MSA EAST FACING INSIDE ELECTRICAL ROOM WALL (N) SOL-ARK 60K INVERTER (N) AC DISCONNECT LIMITLESS POWER (N) AP SMART TRANSMITTER BOX IN V AC D HP UM UM MS A SAFETY PLACARD SHEET TITLE SHEET NUMBER STAMP PV5.0 A1/30/2026FOR REVIEW REVDATEDESCRIPTION REVISIONS 24"X36" 16 7 1 E 16 7 1 E S T A N D R E W P L , SA N T A A N A 9 2 7 0 5 AH J : SA N T A A N A PR O J E C T 358 Coral Circle, El Segundo, CA 90245 Ben Lochtenberg CSLB C10 License # 992157 Phone No: (310) 376-8740 DRAWN BY A. CRUZ PROJECT ENGINEER ENGINEERING@XEROSOLAR.COM SCOPE OF WORK: (129) PV MODULES (LONGI LR5-72HBD-545M) SYSTEM SIZE: (70.305) kW DC STC, (63.488) kW AC CEC (1) SOL-ARK 60K-3P-480V INVERTER CAUTION: POWER TO THIS BUILDING IS ALSO SUPPLIED FROM THE FOLLOWING SOURCES WITH DISCONNECTS LOCATED AS SHOWN LABEL LOCATION: MAIN SERVICE PANEL/ MAIN SWITCHGEAR "MSB" CAUTION: SOLAR CIRCUIT WARNING ELECTRIC SHOCK HAZARD DO NOT TOUCH TERMINALS TERMINALS ON BOTH LINE AND LOAD SIDES MAY BE ENERGIZED IN THE OPEN POSITION WARNING INVERTER OUTPUT CONNECTION DO NOT RELOCATE THIS OVERCURRENT DEVICE ! SOLAR DISCONNECT CAUTION: SOLAR ELECTRIC SYSTEM CONNECTED 5 3 4 9 8 7 6 2 LABEL LOCATION: LOCATED AT EACH SERVICE EQUIPMENT LOCATION TO WHICH THE PV SYSTEMS ARE CONNECTED OR AT AN APPROVED READILY VISIBLE LOCATION AND SHALL INDICATE THE LOCATION OF RAPID SHUTDOWN INITIATION DEVICES. PER CODE(S): CEC 2022: 690.56(C)(1) 10 CAUTION: SOLAR CIRCUIT WARNING ELECTRIC SHOCK HAZARD DO NOT TOUCH TERMINALS TERMINALS ON BOTH LINE AND LOAD SIDES MAY BE ENERGIZED IN THE OPEN POSITION WARNING INVERTER OUTPUT CONNECTION DO NOT RELOCATE THIS OVERCURRENT DEVICE ! SOLAR DISCONNECT LABEL LOCATION: DISCONNECT, POINT OF INTERCONNECTION (PER CODE: CEC 690.13(B)) WARNING DUAL POWER SOURCE SECOND SOURCE IS PHOTOVOLTAIC SYSTEM CAUTION: SOLAR ELECTRIC SYSTEM CONNECTED LABEL LOCATION: POINT OF INTERCONNECTION (PER CODE: CEC 705.12(D)(4)) ! LABEL LOCATION: MARKINGS PLACED ON ALL INTERIOR AND EXTERIOR DC CONDUIT, RACEWAYS, ENCLOSURES, AND CABLE ASSEMBLIES AT LEAST EVERY 10 FT, AT TURNS AND ABOVE/BELOW PENETRATIONS AND ALL COMBINER/JUCTION BOXES. (PER CODE: CFC 605.11.1.4) 5 3 4 9 8 7 6 2 LABEL LOCATION: CONDUIT, COMBINER BOX (PER CODE: CEC 690.31(G)(3)(4) & CEC 690.13(G)(4) WARNING WARNING: PHOTOVOLTAIC POWER SOURCE ELECTRIC SHOCK HAZARD DO NOT TOUCH TERMINALS TERMINALS ON BOTH LINE AND LOAD SIDES MAY BE ENERGIZED IN THE OPEN POSITION ADHESIVE FASTENED SIGNS: · THE LABEL SHALL BE SUITABLE FOR THE ENVIRONMENT WHERE IT IS INSTALLED. · WHERE REQUIRED ELSEWHERE IN THIS CODE, ALL FIELD APPLIED LABELS, WARNINGS, AND MARKINGS SHOULD COMPLY WITH ANSI Z535.4 [CEC 110.21(B) FIELD MARKING]. · ADHESIVE FASTENED SIGNS MAY BE ACCEPTABLE IF PROPERLY ADHERED. VINYL SIGNS SHALL BE WEATHER RESISTANT [CFC 605.11.1.3] ! CAUTION: SOLAR ELECTRIC SYSTEM CONNECTED LABEL LOCATION: POINT OF INTERCONNECTION (PER CODE: CEC 690.15, CEC 690.13(B)) 3 4 LABEL LOCATION: UTILITY SERVICE ENTRANCE/METER, SOLAR SUB-PANEL REQUIRED BY LOCAL AHJ PER CODE(S): CEC 2022: 690.12 PHOTOVOLTAIC SYSTEM EQUIPPED WITH RAPID SHUTDOWN 2 WARNING ELECTRIC SHOCK HAZARD LABEL LOCATION: AC DISCONNECT, POINT OF INTERCONNECTION PER CODE: CEC 690.17(E) DO NOT TOUCH TERMINALS TERMINALS ON BOTH LINE AND LOAD SIDES MAY BE ENERGIZED IN THE OPEN POSITION !1 4 2 PHOTOVOLTAIC SYSTEM AC DISCONNECT RATED AC OUTPUT CURRENT 72.3 AMPS NOMINAL OPERATING AC VOLTAGE 480 VOLTS MAIN SERVICE PANEL "MSB" SOLAR S ELK LN PARKING LOT SOLAR INVERTER; SOLAR AC DISCONNECT ROOFTOP HATCH N W S E LABEL LOCATION: MARKINGS PLACED MAIN SWITCHGEAR POINT OF CONNECTION BREAKER. BREAKER WILL NOT BE REMOVED PER CODE ENERGIZED. (PER CODE: CFC 605.11.1.4) LABEL LOCATION: MARKINGS PLACED ON PV AC DISCONNECT ACCESSIBLE 24/7 BY UTILITY AND LOCKABLE VISIBLY IN THE OFF POSITION 1 ELECTRICAL ELEVATIONS VIEW DETAIL PV5.0 SCALE:107/128" = 1' 11 2 ELECTRICAL AERIAL VIEW DETAIL PV5.0 SCALE:33/64" = 1' SOLAR INVERTER HOUSE PANEL AND HOUSE METER AC DISCONNECT MAIN SERVICE ASSEMBLY AND UTILITY METER DOOR TO OUTSIDE N W S EYOU ARE HERE 1'-9" 2' - 1 1 " 1'-0" 2' - 0 " 4' EQUIPMENT CLEARANCE 10'-7" 10 ' - 7 " CITY OF SANTA ANA Planning and Building Agency XEROSOLRR By notification of this letter, I authorize the following individuals to act upon m agent to obtain permits for the installation and construction of Photovoltaic So Storage projects: Approved FOR PERMIT ISSUANCE :.ember 4, 2025 Master ID: If as my Riley Schoeben Aaron Valladolid Collin Kapecki Bianca Has George Braunegg Jonathan Cendejas Margaretta Maynard Travis Nott Jay Todd Christopher Max Rich Jenkins Tucker Collins Nathan Pompa James Lawrence Weitzel Manual Trejo Guzman Kevin Collins Maki Miyazaki Shannon Crouch Jake Dykeman Tony Hart Alicia Kling Christian Delgado Audrey Stempel Dave Ellis Leonardo Mendoza Andrew Costley David Franco Benjamin Hood Armando Cruz This will only apply for projects that are filed on behalf of Xero Solar. // CONTRACTORS C1Ca STATE LICENSE BOARD �..' ACTIVE LICENSE en Lochtenberg ��. 4, ��. �..992157 . �. CORP C-46, C-10 # 992157 __--XERO SOLAR ...... c, v C445 �e Attached ......r.. 041300028 mvw tslt ca go. ib California Certificate .,. -v+;>r Y A:.wr+.v�. .orea>«••arw ...,,s� o. •eva�!r. •c. gin. RRy'�anr .r•... a'+a,..� inn frcoa­ -,at trenslerrsble ma shall be rgWraoa to Me R"MUr �pM oelnano vrtan 6v"e"al". nlvww. Or :artlwatea tar e.V r.Kpr ran poo4.t ..ra .. woe tnrwglr fail e■wr"o aete onry Hryayp )u11�n7.en �. .o�i-mars asx . <rse yore . ?iu. :es�7�x :w:�erFerr,•C:a p50'a r• w :,•y •.1wR CA License # 992157 (310) 376-8740 358 Coral Circle El Segundo CA 90245 CITY OF SANTA ANA Planning and Building Agency CALIFORNIA ALL-PURPOSE ACKNOWLEDGMENT A notary public or other officer completing this certificate verifies only the identity of the indi, document to which this certificate is attached, and not the truthfulness, accuracy, or validity of t State of California County of Los Angeles Approved FOR PERMIT ISSUANCE IVIL CODE § 1189 atevho signed the document. On before me, Amanda Lee Borgstrom, Notary Public date Here Insert Name and Title of the Officer personally appeared h�J Name(s) of ner(s) who proved to me on the basis of satisfactory evidence to be the person(s) whose name r(sj subscribed to the within instrument and acknowledged to me that he/�f%/,tf'Sey executed the same in his/l &/their authorized capacity(iep�), and that by his/�/Weir signature on the instrument the person or the entity upon behalf of which�i the person`) acted, executed the instrument. certify under PENALTY OF PERJURY under the laws of the State of California that the foregoing paragraph is true and correct. WITNESS myUand official seal. �MANDA LEE DORGSTROM Notary 1`uDiic - Callfornla i" Los Anfeles County Commission M 2449e21 — Sinature My Corm. Expires Jun 10. 2027 g Signature of tgd& Place Notary Seal Above OPTIONAL Though this section is optional, completing this information can deter alteration of the document or fraudulent reattachment of this form to an unintended document. Description of Attached Document Title or Type of Document: Number of Pages: Document Date: Signer(s) Other Than Named Above: Capacity(ies) Claimed by Signer(s) Signer's Name: ❑ Corporate Officer — Title(s): ❑ Partner — ❑ Limited ❑ General ❑ Individual ❑ Attorney in Fact ❑ Trustee ❑ Guardian or Conservator F-1 Other - Signer Is Representing: Signer's Name: ❑ Corporate Officer — Title(s): ❑ Partner — ❑ Limited ❑ General ❑ Individual ❑ Attorney in Fact ❑ Trustee ❑ Guardian or Conservator 71 Other: - Signer Is Representing: ©2014 National Notary Association - www.NationalNotary.org - 1-800-US NOTARY (1-800-876-6827) Item #5907 ATTACHMENT DETAIL SHEET TITLE SHEET NUMBER STAMP PV3.0 (ATTACHMENT) A1/30/2026FOR REVIEW REVDATEDESCRIPTION REVISIONS 24"X36" 16 7 1 E 16 7 1 E S T A N D R E W P L , SA N T A A N A 9 2 7 0 5 AH J : SA N T A A N A PR O J E C T 358 Coral Circle, El Segundo, CA 90245 Ben Lochtenberg CSLB C10 License # 992157 Phone No: (310) 376-8740 DRAWN BY A. CRUZ PROJECT ENGINEER ENGINEERING@XEROSOLAR.COM SCOPE OF WORK: (129) PV MODULES (LONGI LR5-72HBD-545M) SYSTEM SIZE: (70.305) kW DC STC, (63.488) kW AC CEC (1) SOL-ARK 60K-3P-480V INVERTER B4/2/2026CLARIFYING NOTES ADDED PV3.0 (Attachment) ATTACHMENT DETAIL PV3.0 (Attachment) 1 SCALE: 3" = 1'-0" 2 ATTACHMENT DETAIL (enlarged section view) ATTACHMENT DETAIL PV3.0 (Attachment) SCALE: 1:5.07 1 NOTE: WATERPROOFING TO FOLLOW INSTALLATION MANUAL INSTRUCTIONS AND WILL BE DONE BY A SEPARATE CONTRACTOR ATTACHMENTS WILL BE CHEMICALLY SEALED FOR MOISTURE PROTECTION. 2' - 0 " U ANCHOR U-2600 SBS IRONRIDGE XR100 RACKING SYSTEM WITH IRONRIDGE TILT MOUNT ROLLED COMP. ROOF CHANNEL NUT GROUNDING CLAMP IRONRIDGE 10 DEGREE ROOF MOUNT 10 " (8) #14 X 2" ROOF FASTENERS WITH MIN 3 4" EMBEDMENT INTO ROOF DIAPHRAGM SUBPERLINS TO BE UTILIZED WHERE ACCEPTABLE 2'-0"2'-0" IRONRIDGE 10 DEGREE ROOF MOUNT (10") IRONRIDGE 10 DEGREE ROOF MOUNT (20") YES NO INSTRUCTIONS: ORAN GE COUNTY FI RE AUTHORI TY Plan Submittal Criteria COMMERCIAL projects, MULTIFAMILY RESIDENTIAL projects and RESIDENTIAL TRACT developments · Fill in the project/business address and provide a brief description of the scope of work and type of business operation that will take place. · Answer questions 1 through 10, read and initial items 11 and 12, then complete and sign the certification section. · If you answer: - “YES” to any part of questions 1 through 10, submit the type of plan indicated in italics to OCFA. · In some cases, other plan types not indicated herein may also be necessary depending on specific conditions or operations. · Visit www.ocfa.org for submittal information and locations. If you need assistance in filling out this form or have questions regarding requirements for review, please contact OCFA at 714-573-6108 or visit us at 1 Fire Authority Road, Irvine, CA 92602. Address Suite City Project Scope/Business Description 1. Construction of a new building, a new story, or increase the footprint of an existing building? Changes to roadways, curbs, or drive aisles? Addition, relocation, or modification of fire hydrants or fences/gates? Construction within 300 feet of an active or proposed oil well? Fire Master Plan (PR145) 2. Property is adjacent to a wildland area or non-irrigated native vegetation? Fire Master Plan (PR145); a Fuel Modification Plan may also be required. (PR120, PR124) 3. Located in or < 100’ from a Division of Oil, Gas, and Geothermal Resources (DOGGR) field boundary, < 300’ from an oil/gas seep, or < 1000’ from a landfill? Methane Work Plan. (PR170) 4. Installation/modification/repair of underground piping, backflow preventers, or fire department connections serving private fire hydrant/sprinkler/standpipe systems? Underground Plan. (PR470, PR475) 5. Drinking/dining/recreation/meetings/training/religious functions or other gatherings in a room > 750 sq.ft. (> 1,000 sq.ft. for training/adulteducation) or > 49 people? Healthcare/outpatient services for > 5 people who may be unable to immediately evacuate without assistance? Education for children (academic tutoring for ages 5+ is exempt unless classified as an E occupancy by the Building Official)? Adult/child daycare? 24-hour care/supervision? Incarceration or restraint? Hotel/apartment or residential facility with 3+ units and 3+ stories (3-story townhouses/rowhouses where an independent direct exit to grade is provided for dwelling are exempt)? Congregate housing/dormitories with 17+ people? High-rise structure (55+ feet to highest occupied floor level)? Architectural Plan (PR200-PR285) 6. Installation/modification of locks delaying or preventing occupants from leaving a space or requiring use of a card, button, or similar action to open a door in the direction of exit travel? Architectural, Sprinkler, and/or Alarm Plan depending on the occupancy and type of device installed (PR200-PR280, PR420-PR425, PR500-PR520) 7. Installation/modification/use of spray booths; dust collection; dry cleaning; industrial ovens/drying equipment; industrial/commercial refrigeration systems; compressed gasses; tanks for cryogenic or flammable/combustible liquids; vapor recovery; smoke control; battery back-up/charging systems (> 50 gal. electrolyte, > 1,000 lb. lithium ion); welding/brazing/soldering, open flame torches, cutting/grinding; or other similar operations? Special Equipment Plan (PR315, PR340-PR382) 8. Storage/use/research with flammable/combustible liquids or other chemicals? Motor vehicle/aircraft maintenance/repair? Cabinetry/woodworking/finishing facility? Chem Class & floor plan (full architectural plan if H occupancy); Special Equipment Plans may be necessary. (PR315-PR360, PR232-PR240) 9. Storage or merchandizing areas in excess of 500 sq. ft. where items are located higher than 12’ (6’ for high-hazard commodities, plastic, rubber, foam, etc.)? High-piled Storage Plan (PR330) 10. Cooking under a Type I commercial hood; installation or modification of a fire extinguishing system located in a commercial cooking hood? Hood & Duct Extinguishing System, not just the hood mechanical plan. (PR335) Initial each of the following two items indicating that you have read and understand the statement: 11. *Sprinklers/Alarms: Consult Building/Fire Codes and ordinances to determine sprinkler/alarm requirements; if a system is required, plans shall be submitted for OCFA review. Existing buildings undergoing remodel must be evaluated by a licensed Initials contractor to determine if modification is needed; if so, contractor shall submit plans prior to making modifications. 12. Fire Hazard Severity Zone: Consult maps available at building department or on OCFA website to determine if your site is located in a FHSZ. Buildings in a FHSZ may be subject to special construction requirements detailed in CBC Chapter 7A or CRC R327— Initials the building department will determine specific requirements. I certify under penalty of perjury under the laws of the State of California that the above is true: Print Name Signature Phone Number ( ) Date / / Building Department: If you have verified that all of the questions have been answered accurately as “NO”, and the project does not otherwise require OCFA review of sprinkler or alarm plans*, then you may accept this signed form as a written release that OCFA review is not required. Should you still require that the applicant have plans approved by OCFA, please initial here or attach an OCFA referral form and have the applicant submit the form along with the appropriate plans and fees for OCFA review. 10-08-14 EE COM O R A N G E C O U N T Y F I R E A U T H O R I T Y Plan Referral Form Required for OCFA to review plans upon the request of the Building Department when the answers on the Plan Submittal Criteria Form (on the reverse) are all “No”. City / County Official Requesting Review: City / County Reference #: Date: __________________________________ City / County: _____________________________________ E-Mail: __________________________________ Contact Name: _____________________________________ Phone #: _________________________________ Title: _____________________________________ ** Have the applicant complete and sign the OCFA Plan Submittal Criteria Form on the reverse of this form. ** Reason(s) for Review: Please describe why OCFA Plan Review is or may be required by the City/County : OCFA COMMENTS:  No further action required on this specific plan type, based on information provided on: ____/______/______.  Project to be taken in for OCFA Review. Other: Name: _________________________________________ Contact #: ______________________________________ Date: _________________________________ OCFA Authorization Updated: 06/02/2020 rs