Agenda packet, first session — Coronado City Council, April 7, 2026 (part 2 of 2)

SD SD SD OD OD OD
3"SD & OD(110 SF)
4 4 (E)3"SD & OD
(540 SF)
(E)3"SD & OD, UP(360 SF)
3"SD & OD, UP(110 SF)
3"SD & OD, UP(110 SF)
SD SD
SD OD OD OD 3"SD & OD, UP
(140 SF)
3"SD & OD, UP
(110 SF)
4 KEY NOTES 3"SD & OD
(140 SF)
5 5
2 2 PLUMBING FLOOR PLAN - NEW WORK - AREA 2 - ALL OPTIONS P2.3.1 P2.5 PLUMBING FLOOR PLAN - AREA 1 - OPTION 1 PLUMBING FLOOR PLAN - AREA 1 - OPTION 1PLUMBINGFLOOR PLAN - AREA 1 -OPTION 1
4 3
(E)4"SD & OD, DN
(867 SF)
3 (E)3"SD & OD, DN(360 SF)
Appendix C -PreliminaryDesignDrawings
PLUMBINGFLOOR PLAN - AREA 1 -OPTION 2
P2.3.2 P2.5 PLUMBING FLOOR PLAN - NEW WORK - AREA 2 - A PLUMBING FLOOR PLAN - AREA 1 - OPTION 2 EXISTING ROOF DRAIN LOCATION TO REMAIN. CONTRACTOR TO FIELD VERIFY EXACT SIZE, LOCATION AND CONDITION. NEW ROOF PENETRATION DRAIN AT LOCATION SHOWN TO SUIT NEW ROOF CONFIGURATION. 12345 P.O.C NEW 3" SD & OD PIPING TO EXISTINTG 4" SD & OD PIPING. CONTRACTOR TO FIELD VERIFY EXACT SIZE ANDLOCATION.

P.O.C NEW 3" SD & OD TO EXISTINTG 3" SD & OD PIPING.CONTRACTOR TO FIELD VERIFY EXACT SIZE AND LOCATION.

PROPOSED NEW OVERHEAD 3" SD & OD ROUTING @1% SLOPE.ROUTING TO BE CONFIRMED IN ACCORDANCE WITH EXISTINGCONDITIONS. SIZING PER CPC 2022 TABLES 1103.1 AND 1103.2.

PIPING LEGEND
CW EXISTING COLD WATER SD EXISTING STORM DRAIN OD EXISTING OVERFLOW DRAIN NEW STORM DRAIN NEW OVERFLOW DRAIN SDOD FINAL DOCUMENT PACKAGE 12/19/2025 Attachment 1
Appendix C -
PreliminaryDesignDrawings
FEASIBILITY STUDY PRELIMINARY CONCEPT 3132 Tiger Run Ct. Suite 113, Carlsbad, CA 92010 tel (858) 449-3066 | www.cpcarchitects.com c p c a r c h i t e c t s P1.1 KEY NOTES EXISTING OVERHEAD CONDENSATE PIPING TO REMAIN. CONTRACTOR TO FIELD VERIFY EXACT SIZE AND LOCATION. MECHANICAL EQUIPMENT SHOWN FOR REFERENCE ONLY. P.O.C NEW OVERHEAD 3/4" CD TO EXISTING 3/4" CD PIPING. CONTRACTOR TO FIELD VERIFY EXACT SIZE AND LOCATION. P.O.C NEW OVERHEAD 3/4" CW PIPING TO EXISTING CW PIPING. CONTRACTOR TO FIELD VERIFY EXACT SIZE AND LOCATION. P.O.C NEW OVERHEAD 3" SD AND ORD TO EXISTING 3" SD AND OD PIPING. CONTRACTOR TO FIELD VERIFY EXACT SIZE AND LOCATION. P.O.C NEW OVERHEAD 3" SD AND ORD TO EXISTING 4" SD AND OD PIPING. CONTRACTOR TO FIELD VERIFY EXACT SIZE AND LOCATION. 12 PLUMBING FLOOR PLAN - AREA 1 EXISTING / DEMO - OPTIONS 1 & 1A PLUMBING FLOOR PLAN - AREA 2 - OPTION 2 P2.4.2 1 TYP.
1 1
1 1
1 1
1 1 1
1 2
22 3
3 3 PLUMBING
FLOOR PLAN - AREA 1 -OPTION 2
4 CD
EH-1
4 33
3/4"CD, A/C
(1 TON)
4 CD CD CD
3 CD
3/4"CD, A/C(1 TON)
2 SD SD SD SD SD SD SD

OD OD OD OD OD OD OD
1,400 SF
1,890 SF
(E)4"SD & OD, DN(3,200 SF)

OD OD OD OD OD OD OD

SD SD SD SD SD SD SD
SD
1,780 SF
6 3"SD & OD
(1,308 SF)
3"SD & OD
(1,308 SF)
(E)4"SD & OD
(1,890 SF)
(E)4"SD & OD
(3,200 SF)
1,470 SF 3"SD & OD
(1,470 SF)
3"SD & OD
6 (1,470 SF)
(E)E"SD & OD(1,780 SF)

SD SD SD
SD
OD

OD OD OD
(E)4"SD & OD
(3,250 SF)
(E)4"SD & OD, DN
(3,250 SF)
SD
OD
3"SD & OD, DN(1,310 SF)
3" SD & OD, DN
(1,490 SF)
(E)4"SD & OD, DN(2,710 SF) 3"SD & OD
(1,709 SF)
(E)4"SD & OD(490 SF)
(E)4"SD & OD(4,030 SF)
(E)4"SD & OD, DN(4,030 SF)
6 3"SD & OD(1,490 SF)
(E)4" SD & OD, DN
(1,840 SF)
SD SD
OD OD
3"SD & OD(1,830 SF)
3"SD & OD(1,310 SF)
(E)4"SD & OD, DN(2,600 SF)

SD SD SD
SD
OD OD
OD
6 3"SD & OD(1,300 SF)
3"SD & OD, UP(1,790 SF)
(E)4"SD & OD, UP(490 SF)
3"SD & OD, UP
(1,830 SF)
3"SD & OD, DN(1,300 SF)
3"SD & OD, UP(1,310 SF)
(E)3"SD & OD, UP
3"SD & OD, UP
(1,650 SF)
(1,490 SF)
6 SD SD SD

OD OD OD
OD
3"SD & OD(2,060 SF)
6 2
2 56
3/4"CW PIPING LEGEND
CW EXISTING COLD WATER CD EXISTING CONDENSATE SD EXISTING STORM DRAIN NEW STORM DRAIN NEW OVERFLOW DRAIN SDODHW EXISTING HOT WATER OD EXISTING OVERFLOW DRAIN NEW COLD WATER CD EXISTING CONDENSATE FINAL DOCUMENT PACKAGE 12/19/2025 Attachment 1
1 1 1
1 1
MPG
3 FEASIBILITY STUDY PRELIMINARY CONCEPT 3132 Tiger Run Ct. Suite 113, Carlsbad, CA 92010 tel (858) 449-3066 | www.cpcarchitects.com c p c a r c h i t e c t s 2 2 2 2
2 2 2 NEW
3" RD & ORD
(690 SF)
NEW
3" RD & ORD
(560 SF)
NEW
3" RD & ORD
(410 SF)

EXISTING
3" RD & ORD
(902 SF)

EXISTING
3" RD & ORD
(867 SF)
NEW
3" RD & ORD
(1,100 SF)
NEW
3" RD & ORD
(850 SF)
NEW
3" RD & ORD
(850 SF)
NEW
3" RD & ORD
(640 SF)

EXISTING
4" RD & ORD
(2,204 SF)

EXISTING
4" RD & ORD
(2,496 SF)

EXISTING
3" RD & ORD
(1,580 SF)
1 1

EXISTING
3" RD & ORD
(140 SF)

EXISTING
3" RD & ORD
(110 SF)
NEW
3" RD & ORD
(110 SF)
NEW
3" RD & ORD
(110 SF)
NEW
3" RD & ORD
(140 SF)
NEW
3" RD & ORD
(110 SF)
PLUMBING ROOF PLAN - NEW WORK - AREA 2 - ALL OPTIONS KEY NOTES EXISTING ROOF DRAIN LOCATION TO REMAIN. CONTRACTOR TO FIELD VERIFY EXACT SIZE, LOCATION AND CONDITION.

INSTALL NEW ROOF DRAIN AT LOCATION SHOWN TO SUIT NEWROOF CONFIGURATION. REROUTE MEDIUM PRESSURE GAS ON ROOF IF OBSTRUCTINGWITH THE EXISTING DRAIN LOCATION 123 PLUMBING ROOF PLAN - AREA 1 - OPTION 2 P2.5.2 P2.4 PLUMBING ROOF PLAN - AREA 1 - OPTION 2
RTU 13
(E)3/4"CD, DN(1 TON)
4 5
MECHANICAL EQUIPMENT SHOWN FOR REFERENCE ONLY.P.O.C NEW 3/4" CD DRAIN TO EXISTING 3/4" CD DRAIN.CONTRACTOR TO FIELD VERIFY EXACT SIZE AND LOCATION. 45 Appendix C -
PreliminaryDesignDrawings
FINAL DOCUMENT PACKAGE 12/19/2025
Attachment 1
FEASIBILITY STUDY PRELIMINARY CONCEPT 3132 Tiger Run Ct. Suite 113, Carlsbad, CA 92010 tel (858) 449-3066 | www.cpcarchitects.com c p c a r c h i t e c t s RTU 6 RTU
5 HP
1 HP
2 CRCU
2CRCU
1 CRCU
3 RTU
8 RTU
9 RTU 10 RTU 11 RTU 12 RTU
4 RTU RTU 3
2 RTU
1 RTU 14 RTU 15 NEW
1 TYP.
2 2
2 2
2 2
2 2
2 CD
CD
22 2
CD
CD
2 2
1 TYP.
1%
1%
3 3
3 3
3 3
3 3 3
3 3
3 3 PLUMBING FLOOR PLAN - NEW WORK - AREA 1 - MECHANICAL OPTION 2 KEY NOTES MECHANICAL EQUIPMENT SHOWN FOR REFERENCE ONLY. REFER TO MECHANICAL DRAWINGS.

P.O.C NEW 3/4" CD TO EXISTING 3/4" CD DRAIN. CONTRACTORTO FIELD VERIFY EXACT SIZE, LOCATION AND CONDITION.PROVIDE NEW CONDENSATE PIPING TO MATCH NEW LAYOUTPER UPDATED MECHANICAL UNIT LOCATIONS AND QUANTITY. 123 P2.6.2 P2.12.2 P2.12 Appendix C - Preliminary
DesignDrawings
PIPING LEGEND EXISTING COLD WATER CD EXISTING CONDENSATE FINAL DOCUMENT PACKAGE 12/19/2025 Attachment 1
Appendix D
Winn Room Roof Options
Page | 155
Attachment 1
Item 8.c
FEASIBILITY STUDY PRELIMINARY CONCEPT 3132 Tiger Run Ct. Suite 113, Carlsbad, CA 92010 tel (858) 449-3066 | www.cpcarchitects.com c p c a r c h i t e c t s CORONADO PUBLIC LIBRARY FEASIBILITY STUDY

WINN ROOM ROOF OPTIONS

WINN ROOM ROOF
OPTIONS A1.0.W FINAL DOCUMENT PACKAGE 12/19/2025 NOTE: THIS A PRELIMINARY OPTION STUDY AND DOES NOT REPRESENT A COMPLETE OR FINAL DESIGN Appendix D - Winn Room Roof Options
Attachment 1

EXISTING TSG BEAMS

NEW OPENINGS FORCLERESTORY WINDOW
NOTE THAT EXISTING MATURE TREE WILLCONTINUE TO DROP PINE NEEDLES ONTHIS ROOF AREA AND THE ADDITION OFSAWTOOTH CLERESTORY WINDOWS WILLADD TO MAINTENANCE ISSUES.

NEW STRUCTURALFRAMING

WINN ROOM CLERESTORY STUDY DESIGN FACTORS
KEEP STRUCTURAL WEIGHT WITHIN 10% OFEXISTING TO PREVENT ADOPTION OFUPDATED CODE STANDARDS FOR SEISMICDESIGN.KEEP STRUCTURAL WEIGHT WITHIN 5% OFEXISTING TO PREVENT ADOPTION OFUPDATED CODE STANDARDS FOR GRAVITYDESIGN.STUDY CONNECTION OF NEW FRAMING TOEXISTING PERIMETER PRECAST.DIAGONAL ROD OR HORIZONTAL TRUSSBRACING AT OPENINGS TO TIE ROOFDIAPHRAGM TOGETHER RELOCATE AHU AND EXHAUST FANSROOF DRAINS AT ALL FOUR CORNERS DUETO DRAINAGE BLOCKED BY SAWTOOTHCLERESTORY STRUCTURE.INTEGRATE FALL PROTECTION TIE-BACKSYSTEM INTO CLERESTORY STRUCTURE.

CONVENTION METAL STUD FRAMINGW/ GLAZING

WINDOW WALL CONSTRUCTION

EXISTING PRECASTCONCRETE CAP BEAM

A A SECTION A-A

FEASIBILITY STUDY PRELIMINARY CONCEPT

WINN ROOM
ROOF PLAN A2.8W 3132 Tiger Run Ct. Suite 113, Carlsbad, CA 92010 tel (858) 449-3066 | www.cpcarchitects.com c p c a r c h i t e c t s FINAL DOCUMENT PACKAGE 12/19/2025 Appendix D - Winn Room Roof Options
Attachment 1
Appendix E
Rooftop Solar Options
Page | 158
Attachment 1
Item 8.c
Appendix E - 5000 SF Roof Solar Appendix E - 5000 SF Solar Option The following provides a preliminary cost estimate for the proposed solar photovoltaic (PV) system at the City of Coronado Public Library. The scope includes the design and installation of a rooftop PV system.

The base construction pricing was developed by a licensed electrical contractor specializing in solar installations. To provide a comprehensive view of potential project costs, Shoreline prepared an expanded estimate that includes all anticipated direct and indirect construction costs—such as general contractor expenses, design services, and typical soft costs. The cost analysis includes a Net Present Value (NPV) calculation, which is calculated across the 25-year life of the solar system.

All pricing presented herein is for budgeting and feasibility purposes only. Final costs will be subject to refinement through subsequent design development, bidding, and negotiation with qualified design and construction professionals.

Attachment 1
Item 8.c
Preliminary BudgetAppendix E - 5000 SF Roof Solar
Attachment 1
Item 8.c
Coronado Library

ELECTRICAL & PHOTOVOLTAIC PROPOSAL
SUBMITTED BY: DYNALECTRIC COMPANY – SAN DIEGO
November 3, 2025

DYNA PROPOSAL # 25-0787

TO: SHORELINE CPM
ATTN: ERIC HEISLER

Appendix E - 5000 SF Roof Solar
Attachment 1
Item 8.c
Coronado Library PV 2 | P a g e
Dynalectric San Diego - 1111 Pioneer Way, El Cajon Ca. 92020

Name: Coronado Library
Construction Address
650 ORANGE AVENUE, CORONADO, CA 92118
Dear Eric,
Thank you for providing Dynalectric with the opportunity to prepare a proposal for this project. Our base pricing covers the furnishing and installation of all normally anticipated materials and equipment as referenced in the documents provided. This proposal is subject to the clarifications and exclusions listed below.

Reference
Local codes and requirements per Feasibility Study dated 9/8/2025 A. Program
• Roof Mounted Solar PV 74.34 kW DC – 118 REC Solar Panels – 630W each • APSmart Rapid Shutdown or Optimizers pending customer’s direction • Sol-Ark 30KW 208V String Inverters – 2 Inverters
• “BESS Ready”
B. Schedule
4 Month Duration to include procurement and construction C. Scope of Services
1) Design
a) Complete electrical infrastructure design services for PV installation provided by Shoreline CPM
b) Structural Design by Shoreline CPM
c) Construction administration services by Dynalectric
d) Complete Low voltage design services by Dynalectric
• Voice/Data cabling infrastructure to support Internet Protocol (IP) devices e) Roof Mounted 225A AC Combiner Panel – Stainless Steel f) SDGE disconnects and meter section
• New SDGE dedicated PV Meter per NGOM requirements
• 225A AC Combiner and switchboard to be fed from inverters • (2) 225A Disconnects
g) Ballasted Roof Racking assumed in base pricing
• If system is determined to be require rooftop anchoring, assume budget of additional $50,000 for rooftop patching and sealing
• Additional $100,000 for labor to open roof and anchor to structure • Structural Fastening details and engineering by Shoreline CPM 2) General Scope
a) 73.34 kW DC Roof Mount Photovoltaic System
b) Interconnection via new 250A Breaker in existing switchgear in place of existing 250A breaker
c) Assume open spec
d) All exterior electrical AC components assumed to be stainless steel Appendix E - 5000 SF Roof Solar
Attachment 1
Item 8.c
Coronado Library PV 3 | P a g e
Dynalectric San Diego - 1111 Pioneer Way, El Cajon Ca. 92020 e) Inverters to be outdoor rated per manufacturer’s cut sheet (NEMA 3R) f) All exposed conduit assumed to be Galvanized Rigid Conduit 3) Testing
Solar testing and final commissioning documentation
4) Site
a) Racking and Electrical by Dynalectric
b) Assumed to be a ballasted system pending structural engineering approval 5) Branch
a) At this time no rooftop convenience receptacles assumed 6) Mechanical/ Plumbing
a) No water for panel cleaning assumed
7) Low Voltage
a) Communications to inverters is assumed will require internet access provided by customer D. Pricing
▪ Base Bid
1) 74.34 kW DC Roof Mounted Solar PV $ 465,239
2) Optional: 60kW/120kWh Sol-Ark Battery $ 130,382
E. Clarifications

1. This proposal is valid for 60 days from the date of submission, subject to the clarifications listed

2. Dynalectric recognizes the need of minority and female business enterprise participation on certain projects. We have a network of vendors and subcontractors that we may call on to contribute towards the desired participation goals for the project if requested.

3. Our proposal includes commodity material (i.e. copper, steel) pricing as of today’s market value.

Escalation of these products beyond our control may result in additional compensation. During the past several months, the market price of commodity materials such as copper, PVC, and steel have experienced large fluctuations. As a result, our vendors have refused to hold prices firm without a purchase order. Upon award of contract, should there be a substantial increase in the cost of these materials over that used in our proposal, Dynalectric will charge the incremental increase at Dynalectric’ s cost plus taxes.

The parties understand and agree that (i) there are current issues with the manufacture and supply of various materials and equipment (all, collectively, “Goods”), which issues generally are referred to as “supply chain disruption” (“Disruption”), (ii) the Disruption arises from a variety of global, national, and local factors, all of which are beyond the control of Dynalectric, and (iii) the Disruption has impacted suppliers’ ability to provide Goods by dates certain, in the quantities ordered, and/or for the specified price.

This proposal therefore is conditioned as follows:
▪ This proposal is conditioned on acceptance of reservations/requirements from supplier to Dynalectric.

Appendix E - 5000 SF Roof Solar
Attachment 1
Item 8.c
Coronado Library PV 4 | P a g e
Dynalectric San Diego - 1111 Pioneer Way, El Cajon Ca. 92020 ▪ The price set forth herein is guaranteed for a period of 30 days from the date of this proposal. Dynalectric thereafter reserves the right to increase the price for such items when Dynalectric actually orders such items to reflect the then-current price of such items as may be due to the Disruption. The pricing in this proposal is guaranteed only for such time, and Dynalectric’s customer assumes the risk of any price increases thereafter. If customer fails to sign this proposal timely, this proposal shall be deemed void, withdrawn, and canceled.
▪ The delivery date of equipment is guaranteed only to the same extent as supplier(’s/s’) commitment to Dynalectric. Such delivery may be delayed in part or whole due to the Disruption, and customer shall not seek to hold Dynalectric liable for any loss or damage arising from delays or unavailability of such items if due solely to the Disruption.

4. We are a union contractor. We are bondable for the above bid amount and our bond rate is approximately (.45) %, however, the bond premium is not included in our base bid. Performance bond (if required) will be executed on a form acceptable to our surety. If the project duration including preconstruction exceeds 24 months, an additional surcharge of 1% per month will be applied to the premium. Notwithstanding anything to the contrary, our bid is conditioned on mutually acceptable terms being negotiated. Further, we do not agree to be bound by the terms of any document not furnished to us.

5. This proposal, including but not limited to pricing and schedule, is made contingent upon the work addressed herein not being adversely affected, either directly or indirectly, by the COVID-19 pandemic and/or the Corona virus. This proposal is further conditioned upon the parties agreeing, prior to beginning of any work and in writing as part of any contract/subcontract, that any (i) schedule issues (including, but not limited to, delay, acceleration, compression, interference, hindrance), (ii) overtime hours or added resources to perform work, (iii) shortages (whether as to labor, subcontracted services, materials, or supplies), (iv) change orders, extra work, or extra costs, or (v) inefficiency and impacts relating to the foregoing, that arise as a result of the COVID-19 pandemic or Corona virus will entitle contractor to a change order equitably addressing impacts to its time for performance and costs.

6. Due to the current market conditions and climate of procurement, we take exception to “just in time delivery” requirements that may be imposed in contract documents.

7. Please be advised that while Dynalectric, as the electrical contractor, are responsible for the safe and code-compliant installation of the electrical components and connections associated with the solar system, we are not responsible for the performance, efficiency, energy production, or operational output of the solar panels or related system components (such as inverters, batteries, or monitoring systems). All projections are based on historic meteorological data.

8. Our workforce for this project assumes the COVID-19 Vaccination is not a requirement and has not been included in our proposal as a condition to perform the scope outlined above.

F. Lead Times - Based on Manufacturer
Switchgear and Transformers
• MV Breaker Section – 50 Weeks
• NGOM Meter With Disconnect and Viewing Window – 40 Weeks • PV Switchboard – 8-10 Weeks
• Distribution Panels – 25 – 29 Weeks
• Panelboards – 8 – 10 Weeks
G. Exclusions

1. Mechanical Roofing Penetrations

2. SDGE Interconnection Application

3. Fees and studies associated with California Independent System Operator for interconnection

4. Carbon monoxide system

5. BMS control wiring, conduit and devices for Mechanical or other systems regardless of voltage

6. Class II wiring and transformer for powered auto plumbing devices

7. Provision and installation of VFD units if required

8. Lighting fixture support/seismic wires
Appendix E - 5000 SF Roof Solar
Attachment 1
Item 8.c
Coronado Library PV 5 | P a g e
Dynalectric San Diego - 1111 Pioneer Way, El Cajon Ca. 92020

9. Seismic engineering/calculations as they apply to building structural

10. Fire rated enclosures (drywall) for lighting fixtures

11. Unistrut grid systems unless otherwise included in scope above

12. Handling or removal of any hazardous materials

13. Handling, Storing and Installing equipment furnished by others

14. Excavation / removal of rock or other underground obstructions

15. Use of specialized excavating other than standard, rubber-wheeled backhoe

16. De-watering

17. Control measures or provisions for any storm water pollution prevention plan

18. Liquidated damages for any delays not directly attributable to Dynalectric

19. Upgrading existing electrical systems to current code requirements unless specifically noted on documents

20. Furnishing or installation of motorized shade equipment, devices, conductors, and cabling.

21. Commissioning of motorized shade system

22. Clock system

23. Security Systems

24. AV Systems

25. Structured Cabling Systems

26. Wireless access point “WAP” cabling

27. 2 Way communication

28. DAS Systems for both Neutral Host and ERRC

29. Temporary power and lighting unless otherwise listed above

30. EV charging stations and equipment unless otherwise listed above

31. J-Hooks for low voltage unless scope of work above includes such systems within our scope

32. 3D Coordination drawings

33. In Wall BIM coordination

34. Access Panels and installation

35. Spoil removal from site

36. Plywood backboards

37. Performance Bond

38. Composite cleanup hours unless specifically acknowledged in scope above. Standard cleanup for own work to an onsite dumpster is included

39. COVID-19 Vaccine requirements

40. Skilled Trained Workforce subcontractor requirements

41. Just in time delivery methods

42. Dedicated Safety and or QC manager unless otherwise referenced above Please do not hesitate to call if you have any questions or you would like to discuss this proposal in more detail.

Sincerely,
Morgan Smith | Project Manager
Dynalectric San Diego
Phone 619.328.0940
[email protected]
Appendix E - 5000 SF Roof Solar
Attachment 1
Item 8.c
System Loss
Shading: 4.3%
Reflection: 3.2%
Soiling: 2.0%
Irradiance: 0.4%
Temperature: 2.8%
Mismatch: 1.0%
Optimizer: 0.2%
Wiring: 0.7%
Clipping: 0.8%
Inverter: 3.5%
AC System: 0.5%
Energy Consumption
kWh
Production
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
0 5K
10K
15K
System Metrics Project Location
Design 5000 SQFT
Module DC
Nameplate 74.34 kW
Inverter AC
Nameplate

60.00 kW
Load Ratio: 1.24
Annual Production 118.4 MWh
Performance Ratio 82.1%
kWh/kWp 1,592.6
Weather Dataset TMY, 10km grid (32.65,-117.15), NREL
(prospector)
Simulator Version 3e6dc4b372-63dd79dec2-b6bd4892e8-
5f86f29470
Project Details
Address 640 Orange Avenue, Coronado, CA, USA
Customer
Name Coronado Public Library
Owner Morgan Smith
Last Modified Morgan Smith
an hour ago
Location (32.691188299999986, -117.1775905)
(GMT -8)
Profile Default Commercial
5000 SQFT Coronado Public Library 640 Orange Avenue, Coronado, CA, USA Annual Production Report produced by Morgan Smith
Appendix E - 5000 SF Roof Solar
Attachment 1
Item 8.c
Annual Production
Description Output % Delta
Irradiance
(kWh/m )
Annual Global Horizontal Irradiance 1,900.0 -
POA Irradiance 1,939.7 2.1%
Shaded Irradiance 1,856.0 -4.3%
Irradiance After Reflection 1,795.8 -3.2%
Irradiance After Soiling 1,759.9 -2.0%
Total Collector Irradiance 1,760.1 0.0%
Energy
(kWh)
Nameplate 130,834.9 -
Output at Irradiance Levels 130,336.2 -0.4%
Output at Cell Temperature Derate 126,735.9 -2.8%
Output after Electrical Mismatch 125,474.0 -1.0%
Optimizer Output 125,223.0 -0.2%
Optimal DC Output 124,359.8 -0.7%
Constrained DC Output 123,338.9 -0.8%
Inverter Output 118,986.3 -3.5%
Energy to Grid 118,391.4 -0.5%
Temperature Metrics
Avg. Operating Ambient Temp 18.5°C
Avg. Operating Cell Temp 28.3°C
Simulation Metrics
Operating Hours 4,654
Solved Hours 4,654
Pending Hours -
Error Hours -
2 Condition Set
Description Condition Set 1
Weather Dataset TMY, 10km grid (32.65,-117.15), NREL(prospector) (download) Solar Angle Location Meteo Lat/Lng
Transposition Model Perez Model
Temperature Model Sandia Model
Temperature Model Parameters
Rack Type a b Temperature Delta
Fixed Tilt -3.56 -0.08 3.0°C
Flush Mount -2.81 -0.05 0.0°C
East-West -3.56 -0.08 3.0°C
Carport -3.56 -0.08 3.0°C
Soiling (%)

J F M A M J J A S O N D
2 2 2 2 2 2 2 2 2 2 2 2
Albedo

J F M A M J J A S O N D

0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2
Rear Mismatch Loss 10% Rear Shading Factor 5%
Module Transparency 0%
Irradiation Variance 5.0%
Cell Temperature Spread 4.0°C
Module Binning Range -2.5% to 2.5%
AC System Derate 0.50%
Component Characterizations
Type Component Characterization Bifacial
Module REC630AA Pro M
(REC Solar)
Spec Sheet
Characterization, PAN False
Module REC630AA Pro M
(REC Solar)
Spec Sheet
Characterization, PAN False
Inverter Sol-Ark 30K-3P208V (Sol-Ark) Spec Sheet N/A
Buck
Optimizer
TS4-A-O (Tigo
Energy) Spec Sheet N/A
Appendix E - 5000 SF Roof Solar
Annual Production Report produced by Morgan Smith
Attachment 1
Item 8.c
Monthly Shading
Month GHI (kWh/m ) POA (kWh/m ) Shaded (kWh/m ) Nameplate (kWh) Grid (kWh) January 102.9 113.1 99.8 6,937.4 6,385.3
February 115.0 122.5 113.4 7,942.9 7,340.5
March 163.1 167.9 159.9 11,270.4 10,332.7
April 189.2 190.9 184.1 13,035.9 11,746.4
May 220.2 218.7 215.3 15,274.2 13,593.0
June 195.9 192.5 190.1 13,462.4 12,044.0
July 207.9 203.1 200.9 14,231.3 12,714.3
August 200.8 199.2 195.0 13,826.2 12,385.9
September 167.9 170.1 166.2 11,749.0 10,656.1
October 132.2 137.8 129.6 9,104.2 8,313.8
November 108.1 116.9 107.1 7,455.4 6,871.2
December 96.9 107.0 94.6 6,545.5 6,008.3
2 2 2
Design Wiring Zone
Description Combiner Poles String Size Stringing Strategy Wiring Zone - 5 - 12 Along Racking
Design BOM
Component Type Quantity
Sol-Ark 30K-3P-208V Inverters 2
REC630AA Pro M Modules 118
TS4-A-O Optimizers 118
10 AWG (Copper) Strings 14
Annual Production Report produced by Morgan Smith
Appendix E - 5000 SF Roof Solar
Attachment 1
Item 8.c
Field Segments
Description Racking Orientation Tilt Azimuth Intrarow Spacing Frame Size Frames Modules Power Field Segment 4 Fixed Tilt Portrait (Vertical) Module: 10° Module: 116.7° 2.0 ft 1x1 84 84 52.92 kW Field Segment 5 Fixed Tilt Portrait (Vertical) Module: 10° Module: 116° 2.0 ft 1x1 34 34 21.42 kW Design Render
Annual Production Report produced by Morgan Smith
Note: Location of panels shown in image above are a preliminary layout. Final design and location of panels to be determined in design phase. Appendix E - 5000 SF Roof Solar Attachment 1
Item 8.c
Appendix E - Full Roof Solar Appendix E - Full Roof Solar Option The following provides a preliminary cost estimate for the proposed solar photovoltaic (PV) system at the City of Coronado Public Library. The scope includes the design and installation of a rooftop PV system.

Attachment 1
Item 8.c
Appendix E - Full Roof Solar Preliminary Budget
Attachment 1
Item 8.c
Coronado Library

ELECTRICAL & PHOTOVOLTAIC PROPOSAL
SUBMITTED BY: DYNALECTRIC COMPANY – SAN DIEGO
October 17, 2025

DYNA PROPOSAL # 25-0787

TO: SHORELINE CPM
ATTN: ERIC HEISLER

Appendix E - Full Roof Solar
Attachment 1
Item 8.c
Coronado Library PV 2 | P a g e
Dynalectric San Diego - 1111 Pioneer Way, El Cajon Ca. 92020

Reference
Local codes and requirements per Feasibility Study dated 9/8/2025 A. Program
• Roof Mounted Solar PV 225 kW DC – 357 REC Solar Panels – 630W each • APSmart Rapid Shutdown or Optimizers pending customer’s direction • Sol-Ark 30KW 208V String Inverters – 6 Inverters
• “BESS Ready”
B. Schedule
6 Month Duration to include procurement and construction C. Scope of Services
1) Design
a) Complete electrical infrastructure design services for PV installation provided by Shoreline CPM
b) Structural Design by Shoreline CPM
c) Construction administration services by Dynalectric
d) Complete Low voltage design services by Dynalectric
• Voice/Data cabling infrastructure to support Internet Protocol (IP) devices e) Roof Mounted 400A AC Combiner Panel – Stainless Steel f) SDGE disconnects and meter section
• New SDGE dedicated PV Meter per NGOM requirements
• 400A AC Combiner and switchboard to be fed from inverters • (2) 400A Disconnects
g) Ballasted Roof Racking assumed in base pricing
• If system is determined to be require rooftop anchoring, assume budget of additional $50,000 for rooftop patching and sealing
• Additional $100,000 for labor to open roof and anchor to structure • Structural Fastening details and engineering by Shoreline CPM 2) General Scope
a) 225 kW DC Roof Mount Photovoltaic System
b) Interconnection via new 400A Breaker in existing switchgear in place of existing 225A breaker
c) Assume open spec
d) All exterior electrical AC components assumed to be stainless steel Appendix E - Full Roof Solar
Attachment 1
Item 8.c
Coronado Library PV 3 | P a g e
Dynalectric San Diego - 1111 Pioneer Way, El Cajon Ca. 92020 e) Inverters to be outdoor rated per manufacturer’s cut sheet (NEMA 3R) f) All exposed conduit assumed to be Galvanized Rigid Conduit 3) Testing
Solar testing and final commissioning documentation
4) Site
a) Racking and Electrical by Dynalectric
b) Assumed to be a ballasted system pending structural engineering approval 5) Branch
a) At this time no rooftop convenience receptacles assumed 6) Mechanical/ Plumbing
a) No water for panel cleaning assumed
7) Low Voltage
a) Communications to inverters is assumed will require internet access provided by customer D. Pricing
▪ Base Bid
1) 225kW DC Roof Mounted Solar PV $ 863,310
2) Optional: 180kW/360kWh Sol-Ark Battery $ 373,212
E. Clarifications

1. This proposal is valid for 60 days from the date of submission, subject to the clarifications listed

3. Our proposal includes commodity material (i.e. copper, steel) pricing as of today’s market value.

This proposal therefore is conditioned as follows:
▪ This proposal is conditioned on acceptance of reservations/requirements from supplier to Dynalectric.

Appendix E - Full Roof Solar
Attachment 1
Item 8.c
Coronado Library PV 4 | P a g e
Dynalectric San Diego - 1111 Pioneer Way, El Cajon Ca. 92020 ▪ The price set forth herein is guaranteed for a period of 30 days from the date of this proposal. Dynalectric thereafter reserves the right to increase the price for such items when Dynalectric actually orders such items to reflect the then-current price of such items as may be due to the Disruption. The pricing in this proposal is guaranteed only for such time, and Dynalectric’s customer assumes the risk of any price increases thereafter. If customer fails to sign this proposal timely, this proposal shall be deemed void, withdrawn, and canceled.
▪ The delivery date of equipment is guaranteed only to the same extent as supplier(’s/s’) commitment to Dynalectric. Such delivery may be delayed in part or whole due to the Disruption, and customer shall not seek to hold Dynalectric liable for any loss or damage arising from delays or unavailability of such items if due solely to the Disruption.

6. Due to the current market conditions and climate of procurement, we take exception to “just in time delivery” requirements that may be imposed in contract documents.

8. Our workforce for this project assumes the COVID-19 Vaccination is not a requirement and has not been included in our proposal as a condition to perform the scope outlined above.

1. Mechanical Roofing Penetrations

2. SDGE Interconnection Application

3. Fees and studies associated with California Independent System Operator for interconnection

4. Carbon monoxide system

5. BMS control wiring, conduit and devices for Mechanical or other systems regardless of voltage

6. Class II wiring and transformer for powered auto plumbing devices

7. Provision and installation of VFD units if required

8. Lighting fixture support/seismic wires
Appendix E - Full Roof Solar
Attachment 1
Item 8.c
Coronado Library PV 5 | P a g e
Dynalectric San Diego - 1111 Pioneer Way, El Cajon Ca. 92020

9. Seismic engineering/calculations as they apply to building structural

10. Fire rated enclosures (drywall) for lighting fixtures

11. Unistrut grid systems unless otherwise included in scope above

12. Handling or removal of any hazardous materials

13. Handling, Storing and Installing equipment furnished by others

14. Excavation / removal of rock or other underground obstructions

15. Use of specialized excavating other than standard, rubber-wheeled backhoe

16. De-watering

17. Control measures or provisions for any storm water pollution prevention plan

18. Liquidated damages for any delays not directly attributable to Dynalectric

19. Upgrading existing electrical systems to current code requirements unless specifically noted on documents

20. Furnishing or installation of motorized shade equipment, devices, conductors, and cabling.

21. Commissioning of motorized shade system

22. Clock system

23. Security Systems

24. AV Systems

25. Structured Cabling Systems

26. Wireless access point “WAP” cabling

27. 2 Way communication

28. DAS Systems for both Neutral Host and ERRC

29. Temporary power and lighting unless otherwise listed above

30. EV charging stations and equipment unless otherwise listed above

31. J-Hooks for low voltage unless scope of work above includes such systems within our scope

32. 3D Coordination drawings

33. In Wall BIM coordination

34. Access Panels and installation

35. Spoil removal from site

36. Plywood backboards

37. Performance Bond

38. Composite cleanup hours unless specifically acknowledged in scope above. Standard cleanup for own work to an onsite dumpster is included

39. COVID-19 Vaccine requirements

40. Skilled Trained Workforce subcontractor requirements

41. Just in time delivery methods

42. Dedicated Safety and or QC manager unless otherwise referenced above Please do not hesitate to call if you have any questions or you would like to discuss this proposal in more detail.

Sincerely,
Morgan Smith | Project Manager
Dynalectric San Diego
Phone 619.328.0940
[email protected]
Appendix E - Full Roof Solar
Attachment 1
Item 8.c
System Loss
Shading: 5.8%
Reflection: 3.3%
Irradiance: 0.4% Soiling: 2.0%
Temperature: 2.8%
Mismatch: 1.2%
Optimizer: 0.2%
Wiring: 0.7%
Clipping: 1.0%
Inverter: 3.5%
AC System: 0.5%
Energy Consumption
kWh
Production
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
0 10K
20K
30K
40K
50K
System Metrics Project Location
Design Design 2
Module DC
Nameplate 224.91 kW
Inverter AC
Nameplate
180.00 kW
Load Ratio: 1.25
Annual Production 350.6 MWh
Performance Ratio 80.4%
kWh/kWp 1,558.8
Weather Dataset TMY, 10km grid (32.65,-117.15), NREL
(prospector)
Simulator Version 9a6c23950f-ada83eb281-bf0df6b42de5dad9d96b Project Details
Address 640 Orange Avenue, Coronado, CA, USA
Customer
Name Coronado Public Library
Owner Morgan Smith
Last Modified Morgan Smith
an hour ago
Location (32.691188299999986, -117.1775905)
(GMT -8)
Profile Default Commercial
Design 2 Coronado Public Library 640 Orange Avenue, Coronado, CA, USA Annual Production Report
Appendix E - Full Roof Solar
produced by Morgan Smith
Attachment 1
Item 8.c
Annual Production
Description Output % Delta
Irradiance
(kWh/m )
Annual Global Horizontal Irradiance 1,900.0 -
POA Irradiance 1,938.8 2.0%
Shaded Irradiance 1,825.9 -5.8%
Irradiance After Reflection 1,766.3 -3.3%
Irradiance After Soiling 1,731.0 -2.0%
Total Collector Irradiance 1,731.1 0.0%
Energy
(kWh)
Nameplate 389,313.6 -
Output at Irradiance Levels 387,700.2 -0.4%
Output at Cell Temperature Derate 377,024.0 -2.8%
Output after Electrical Mismatch 372,321.5 -1.2%
Optimizer Output 371,576.9 -0.2%
Optimal DC Output 368,819.8 -0.7%
Constrained DC Output 365,264.9 -1.0%
Inverter Output 352,356.3 -3.5%
Energy to Grid 350,594.5 -0.5%
Temperature Metrics
Avg. Operating Ambient Temp 18.5°C
Avg. Operating Cell Temp 28.1°C
Simulation Metrics
Operating Hours 4,654
Solved Hours 4,654
Pending Hours -
Error Hours -
2 Condition Set
Description Condition Set 1
Weather Dataset TMY, 10km grid (32.65,-117.15), NREL(prospector) (download) Solar Angle Location Meteo Lat/Lng
Transposition Model Perez Model
Temperature Model Sandia Model
Temperature Model Parameters
Rack Type a b Temperature Delta
Fixed Tilt -3.56 -0.08 3.0°C
Flush Mount -2.81 -0.05 0.0°C
East-West -3.56 -0.08 3.0°C
Carport -3.56 -0.08 3.0°C
Soiling (%)

J F M A M J J A S O N D
2 2 2 2 2 2 2 2 2 2 2 2
Albedo

J F M A M J J A S O N D

0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2
Rear Mismatch Loss 10% Rear Shading Factor 5%
Module Transparency 0%
Irradiation Variance 5.0%
Cell Temperature Spread 4.0°C
Module Binning Range -2.5% to 2.5%
AC System Derate 0.50%
Component Characterizations
Type Component Characterization Bifacial
Module REC630AA Pro M
(REC Solar)
Spec Sheet
Characterization, PAN False
Module REC630AA Pro M
(REC Solar)
Spec Sheet
Characterization, PAN False
Module REC630AA Pro M
(REC Solar)
Spec Sheet
Characterization, PAN False
Module REC630AA Pro M
(REC Solar)
Spec Sheet
Characterization, PAN False
Module REC630AA Pro M
(REC Solar)
Spec Sheet
Characterization, PAN False
Inverter Sol-Ark 30K-3P208V (Sol-Ark) Spec Sheet N/A
Buck
Optimizer
TS4-A-O (Tigo
Energy) Spec Sheet N/A
Annual Production Report
Appendix E - Full Roof Solar
produced by Morgan Smith
Attachment 1
Item 8.c
Monthly Shading
Month GHI (kWh/m ) POA (kWh/m ) Shaded (kWh/m ) Nameplate (kWh) Grid (kWh) January 102.9 113.0 97.8 20,552.3 18,831.3
February 115.0 122.4 110.1 23,306.7 21,432.2
March 163.1 167.8 157.0 33,482.4 30,535.2
April 189.2 190.8 182.2 39,026.1 34,972.1
May 220.2 218.7 212.3 45,552.3 40,304.2
June 195.9 192.5 187.7 40,230.1 35,809.9
July 207.9 203.0 198.8 42,593.6 37,880.2
August 200.8 199.2 194.6 41,733.5 37,252.2
September 167.9 170.0 161.7 34,562.9 31,196.0
October 132.2 137.7 128.6 27,325.9 24,889.7
November 108.1 116.7 102.3 21,534.1 19,721.7
December 96.9 106.8 92.8 19,413.6 17,769.7
2 2 2
Design Wiring Zone
Description Combiner Poles String Size Stringing Strategy Wiring Zone - 5 - 12 Along Racking
Design BOM
Component Type Quantity
Sol-Ark 30K-3P-208V Inverters 6
REC630AA Pro M Modules 357
TS4-A-O Optimizers 357
10 AWG (Copper) Strings 36
Annual Production Report
Appendix E - Full Roof Solar
produced by Morgan Smith
Attachment 1
Item 8.c
Field Segments
Description Racking Orientation Tilt Azimuth Intrarow Spacing Frame Size Frames Modules Power Field Segment 1 Fixed Tilt Portrait (Vertical) Module: 10° Module: 116° 1.5 ft 1x1 56 56 35.28 kW Field Segment 2 Fixed Tilt Portrait (Vertical) Module: 10° Module: 116° 1.5 ft 1x1 80 80 50.40 kW Field Segment 3 Fixed Tilt Portrait (Vertical) Module: 10° Module: 116° 1.5 ft 1x1 106 106 66.78 kW Field Segment 4 Fixed Tilt Portrait (Vertical) Module: 10° Module: 116.5° 1.5 ft 1x1 81 81 51.03 kW Field Segment 5 Fixed Tilt Portrait (Vertical) Module: 10° Module: 116° 2.0 ft 1x1 34 34 21.42 kW Design Render
Annual Production Report
Appendix E - Full Roof Solar
produced by Morgan Smith
Attachment 1
Item 8.c
Sol-Ark LLC | Sales: (972) 575-8875 Ext. 1, [email protected] | Support: (972) 575-8875 Ext. 2, [email protected] SK150-0017-005 Commercial: 30K-3P-208V
Perfect for Light Commercial AC/DC Coupling Capability Modular & Scalable Energy Seamless Backup Power Simplifies adding energy
storage to small commercial
buildings.

Enabling seamless integration
with existing grid-tied PV
systems
Modular and flexible design
allowing for easy installation
and expansion.

Helps met your corporate
renewable energy goals and
decarbonization efforts
Native 120/208 3P output
simplifies installation removing
the need for bulky step-down
transformers
Allows for efficient DC coupling
using the integrated 4x channel
MPPT charge controller.

Accommodates a range of
system sizes with outputs
starting from 30kW going to
300kW
Blazing fast 5ms transfer time
with 200A grid relay allows for
business continuity during grid
outages.

French cleat for
easy installation
2x Integrated locking
PV disconnect
WiFi or Ethernet
monitoring via MySolArk
Outdoor rated
to NEMA 3R
Appendix E - Full Roof Solar
Attachment 1
Item 8.c
Sol-Ark LLC | Sales: (972) 575-8875 Ext. 1, [email protected] | Support: (972) 575-8875 Ext. 2, [email protected] SK150-0017-005

DATASHEET
30K-208V
C&I Hybrid Inverter
Inverter Model Name: 30K-3P-208V
Sol-Ark Product SKU: 30K-3P-208V
Input Data (PV)
Max. Allowed PV Power (STC) 39,000W
MPPT Voltage Range 150-500V
Startup Voltage 180V
Max. Input Voltage 1 550V
Max. operating input current per MPPT 36A
Max. short circuit current per MPPT 55A
No. of MPP Trackers 4
No. of PV Strings per MPPT 2
Max. AC Coupled Input Power 30,000W
Output Data (AC)
Nominal AC Voltage (3Φ) 120/208V
Grid Frequency 50 / 60Hz
Real Power, max continuous (3Φ) 30,000W
Max. Output Current 83.4A
Peak Apparent Power (10s, off-grid, 3Φ) 45,000VA
Max. Grid Passthrough Current (10min) 200A
Continuous Grid Passthrough Current 180A
Power Factor Output Range +/- 0.8 adjustable
Backup Transfer Time 5ms (adjustable)
CEC Efficiency 96.5%
Max Efficiency 97.5%
Design (DC to AC) Transformerless DC
Stackable Up to 10 in parallel
Battery Input Data (DC)
Battery Chemistry Lithium-ion
No. of Battery Inputs 2
Battery Input Terminal Rating 50A
Nominal DC Voltage ≥300V
Operating Voltage Range 160 - 500V
Battery Capacity Range 50 — 9900Ah
Max. Battery Charge / Discharge Current 100A (50A per input) Charge Controller Type CC/CV - BMS Controlled
Grid to Battery Charging Efficiency 96.0%
Automatic Generator Start (AGS) 2 Wire Start - Integrated BMS Communication 2 CAN (Controller Area Network)
General Data
Dimensions (H x W x D) 894 x 528 x 295 mm (35.2 x 20.8 x 11.6 in) Weight 80 Kg / 176 lb.

Enclosure IP65 / NEMA 3R
Operating Temperature -40 – 60°C, >45°C Derating
Noise Level < 30 dB @ 25°C (77°F)
Idle Consumption - No Load 60W
Communication and Monitoring Wi-Fi & LAN Hardware Included Warranty 10 Years
Category
Certifications and Listings
(Grid Support Interactive Inverter)
UL 1741-2021 (UL1741SB), CSA C22.2 No 107.1-16,
IEEE 1547-2018 & 1547a-2020 & 1547.1-2020 (SRD V2.0),
UL 1741 CRD-PCS, UL1699B, CEC, SGIP, CSIP
PV DC Disconnect Switch — NEC 240.15 Integrated
Ground Fault Detection — NEC 690.5 Integrated
PV Rapid Shutdown Control — NEC 690.12 Integrated
PV Arc Fault Detection — NEC 690.11 Integrated
PV Input Lightning Protection Integrated
PV String Input Reverse Polarity Protection Integrated
Surge Protection DC Type II / AC Type III

1. See Installation Guide for more details on sizing array strings. The highest input voltage is based on the open-circuit voltage of the array at the minimum design temperature.

2. Active BMS communication is required for all lithium batteries. A list of compatible battery partners can be found on our website.

Sol-Ark has a policy of continuous improvement and reserves the right to modify its specifications at any time and without prior notice. Please visit sol-ark.com for the latest information.

Appendix E - Full Roof Solar
Attachment 1
Item 8.c
Sol-Ark LLC | Sales: (972) 575-8875 Ext. 1, [email protected] | Support: (972) 575-8875 Ext. 2, [email protected] SK150-0021-009 L3 BESS: 208V Outdoor and Indoor
Modular Solutions Efficient and Flexible Scalable and Cost Effective Innovative L3 HV-40: Stack up to 10
inverters / 160 battery cabinets
for 300kWac / 6.4MWh
Increase business uptime and
reliability with industry leading
backup power.

Maximize ROI on your
investment with industry leading
cost per kWh.

Integrated controls, 200A
transfer relays, AC and DC
coupling
L3 HVR-60: Stack up to 6
inverters / 36 battery cabinets for
180kWac / 2.2MWh
Reduce utility demand charges
with integrated peak shaving
control.

Reduce wiring costs and
integrate electric vehicle
charging stations using the GEN
port.

Reduce installation costs with
built-in module and cabinet fire
suppression
Sell excess energy back to the
grid or participate in DER
programs.

Combine renewable energy
sources.

Integrated four channel MPPT’s
allow for maximum charging
efficiency
Outdoor BESS
IP55 rated
Indoor BESS
IP20 rated
Appendix E - Full Roof Solar
Attachment 1
Item 8.c
Sol-Ark LLC | Sales: (972) 575-8875 Ext. 1, [email protected] | Support: (972) 575-8875 Ext. 2, [email protected] SK150-0021-008 | L3 Series Limitless Lithium Battery Energy Storage System 208V Options Outdoor Indoor
Battery Energy Storage System
Battery Model Name:

ESS Model Name:

Sol-Ark Product SKU:

L3 HVR-60
L3 HVR-60KWH-30K
L3-HVR-60KWH
L3 HV-40
L3 HV-40KWH-30K
L3-HV-40KWH
System Data
Compatible Inverter Model Sol-Ark 30K-3P-208V
Cell Chemistry Lithium Iron Phosphate
Nameplate Energy Capacity (DC) 61.44 kWh 40.96 kWh
Usable Energy Capacity (DC) 1 55.30 kWh 36.86 kWh
Built-In DC Disconnect Rating 200A
Internal Fuse Rating 160A
Max. # Battery Units Per Inverter 6 16
Max. # Inverters in Parallel 6 10
Recommend Depth of Discharge 90%
Roundtrip Efficiency Charge/Discharge (DC) 94% (25C, 0.5C) System Nominal Voltage (DC) 307V 410V
System Operating Voltage (DC) 294V — 336V 392V — 448V
Battery Pack Internal Configuration 6s6p 8s1p
Charge/Discharge Current (DC) 2
• Recommend 100A 50A
• Max. Continuous 100A
• Peak Discharge (60 sec @ 25ºC) 125A
Battery Max. Continuous Charge/Discharge Power (DC) 61.44kW 40.96kW ESS Max. Continuous Charge/Discharge Power (AC) 30kW
Fault Current Contribution per Battery 4,200A / 1.47ms
Mechanical Specifications
Product Dimensions (WxDxH) 76x107x226 cm (30x42x89 in) 58x58x163 cm (23x23x64 in) Net Weight 950 kg (2,095 lbs) 628 kg (1,384 lbs)
Mounting Type Outdoor Enclosure Freestanding Rack Mount Material and Finish Steel — Corrosion Resistant Powder Coat Steel — Powder Coated Operating Temperature3 and Humidity -20°C — 50°C (14°F — 122°F) — 5%—85% RH 4°C — 43°C (40°F — 110°F) — 5%—85% RH Operating Altitude 4 3000m (9,843 ft)
Storage Conditions 5 -4ºF — 95ºF — Up to 85% RH (non-condensing) and State of Charge (SOC) 30% Ingress Rating IP55 (NEMA 3R) IP20 (NEMA 1)
Noise Level @ 1m 75 dBA at 30°C (86°F) < 40 dBA at 30°C (86°F) Seismic Mounting Up to Category F
Communication Ports CAN2.0/RS485
Battery Module Specifications
Battery Module Nominal Energy Capacity 5.12kWh
Battery Module Nominal Voltage and Capacity 51.2V / 100Ah Terminal Type Amphenol SurLok – Push Lock Connector
Warranty and Certification
Performance Warranty 6 10 years or 196MWh Throughput 10 years or 130MWh Throughput Product Warranty 10 Years
Certifications UL1973, UL9540, UL9540a, UN38.3, FCC, Prop 65

1. DC usable energy, test conditions: 90% DOD, 0.3C charge and discharge at 25ºC. System usable energy may vary due to system configuration parameters.

2. Output current is affected by battery temperature and SOC.

3. Temperature is based on the average cell temperature as measured by the BMS. Charging is disabled below 0°C (32ºF). Derating occurs above 45°C (113ºF). See Sol-Ark technical sales for outdoor sites.

4. Battery will operate at a maximum of 1C charge/discharge up to 2000m, above 2000m maximum output is derated to 0.8C, contact Sol-Ark for details.

5. Storage temperature of the battery with no charge or discharge

6. EOL (End of Life) 70% retained capacity. See L3 Series warranty document for details.

Commented [DZ1]: @Liam O'Brien Confirm 125A
peak discharge
Commented [LO2R1]: 125 is fine, adjusted the time
Commented [LO3]: need to get noise level from
Deye
Commented [LO4]: @David Zuren can we add the
table border between these two columns
Appendix E - Full Roof Solar
Attachment 1
Item 8.c
REC AlphA®
PRo M Series
Datasheet
610–640 Wp

ELIGIBLE

HETEROJUNCTION TECHNOLOGY

22.5% MAX. EFFICIENCY
-0.24% /K TEMP. COEFF. PMAX
92% MIN. POWER IN YEAR 25
Appendix E - Full Roof Solar
Attachment 1
Item 8.c
REC Solar PTE. LTD.
20 Tuas South Ave. 14
Singapore 637312
[email protected]
www.recgroup.com
GR
GR
14 ±0.2
9 ±0.2
21 ±0.5
792 ±3
30 22.5
208.4
21 45
1300
GR
GR
GR
GR

0.5 ±0.01

0.35 ±0.01

0.8 ±0.02
GR

31.2 ±0.1

1.2 0.9

1.25 85.6 ±0.1

15.75 8.2
208.4

15.25 ±0.04

49.7 51.2

0.2 ±0.01

51.4 ±0.1

0.8 1.8

55.1 51.2

19.7 Power Output - PMAX (WP) 610 620 630 640
Watt Class Sorting - (W) 0/+10 0/+10 0/+10 0/+10 Nominal Power Voltage - VMPP(V) 36.3 36.6 36.8 37.1
Nominal Power Current - IMPP(A) 16.81 16.94 17.12 17.26 Open Circuit Voltage - VOC (V) 44.4 44.6 44.7 44.9
Short Circuit Current - ISC (A) 17.56 17.67 17.78 17.89 Power Density (W/ft²) 19.9 20.3 20.6 20.9
Panel Efficiency (%) 21.5 21.8 22.2 22.5
Power Output - PMAX (WP) 464 469 477 485
Nominal Power Voltage - VMPP (V) 34.2 34.3 35.5 34.8
Nominal Power Current - IMPP (A) 13.85 13.69 13.84 13.95 Open Circuit Voltage - VOC (V) 41.9 41.8 41.9 42.1
Short Circuit Current - ISC (A) 14.18 14.28 14.37 14.46 85 90
95 100
105
100 200 300 400 500 600 700 800 900 1000
Ref: PM-DS-12-06-Rev-3.2 10.23

GENERAL DATA
Cell Type 120 half-cut REC bifacial heterojunction cells Glass 0.13 in solar glass with anti-reflective surface treatment in accordance with EN12150
Backsheet Highly resistant polymer (White)
Frame Anodized aluminum (Silver)
Junction Box 3-part, 3 bypass diodes, lead-free
IP68 rated, in accordance with IEC 62790
Connectors Stäubli MC4-EVO2 (12AWG)
in accordance with IEC 62852, IP68 only when connected
Cable 12 AWG solar cable, 51.2 in + 51.2 in
in accordance with EN50618
Dimensions 85.6 x 51.4 x 1.2 in (30.6 ft²)
Weight 71.6 lbs
Origin Made in Singapore
MAXIMUM RATINGS*
Operational Temperature -40 °F - 185 °F
System Voltage 1500 V
Maximum Test Load (front) +5400 Pa (112.6 lb/ft²)
Maximum Test Load (rear) -2400 Pa (50.2 lb/ft²)
Max Series Fuse Rating 35 A
Max Reverse Current 35 A
* See installation manual for mounting instructions.

Design load = Test load / 1.5 (safety factor)
TEMPERATURE RATINGS*
Nominal Module Operating
Temperature 44 °C ± 2°C
Temperature coefficient of PMAX -0.24% /K
Temperature coefficient of VOC -0.24% /K
Temperature coefficient of ISC 0.04% /K
*The temperature coefficients stated are linear values

DELIVERY INFORMATION
Panels per Pallet 33
Panels per 40 ft GP/high cube
container 528 (16 Pallets)
Panels per 53 ft truck 594 (18 Pallets)
LOW LIGHT BEHAVIOR Rel. Efficiency (%)
Irradiance (W/m²)
Typical low irradiance performance of module at STC:

Founded in 1996, REC Group is an international pioneering solar energy company dedicated to empowering consumers with clean, affordable solar power. As Solar’s Most Trusted, REC is committed to high quality, innovation, and a low carbon footprint in the solar materials and solar panels it manufactures. Headquartered in Norway with operational headquarters in Singapore, REC also has regional hubs in North America, Europe, and Asia-Pacific.

Available from:

Measurements in inches
Specifications subject to change without notice.

REC AlpHA® Pro M Series
Datasheet

CERTIFICATIONS
IEC 61215:2021; IEC61730:2016; UL61730
ISO 11925-2 Ignitability (EN 13501-1 Class E)
IEC 62716 Ammonia Resistance
IEC 61701 Salt Mist (SM6)
IEC 61215:2016 Hailstone (35mm)
UL 61730 Fire Type 1
ISO 14001; ISO9001; IEC45001; IEC62941
PRODUCT CODE*: RECxxxAA Pro M
Values at standard test conditions (STC: air mass AM 1.5, irradiance 1000 W/m², temperature 77°F (25°C)), based on a production spread with a tolerance of PMAX, VOC & ISC ±3% within one watt class. Nominal module operating temperature (NMOT: air mass AM 1.5, irradiance 800 W/m², temperature 68°F (20°C), windspeed 3.3 ft/s (1 m/s)). * Where xxx indicates the nominal power class (PMAX) at STC above.

STC NMOT

ELECTRICAL DATA

WARRANTY
Standard REC ProTrust
Installed by an REC
Certified Professional No Yes Yes
System Size All <25 kW 25-500 kW
Product Warranty (yrs) 20 25 25
Power Warranty (yrs) 25 25 25
Labor Warranty (yrs) 0 25 10
Power in Year 1 98% 98% 98%
Annual Degradation 0.25% 0.25% 0.25%
Power in Year 25 92% 92% 92%
The REC ProTrust Warranty is only available on panels purchased through an REC Certified Solar Professional installer. Warranty conditions apply. See www.recgroup. com for more details
Appendix E - Full Roof Solar
Attachment 1
Item 8.c
Rev1.5 2021-12-02
RSD-D
 Meets NEC 2017 & 2020 (690.12) requirements
 Executes rapid shutdown of system when
Transmitter-PLC signal is absent
 Meets SunSpec requirements
 Dual-input channel
RSD-D meets SunSpec requirements, maintaining normal function by continually receiving a heartbeat signal from the APsmart Transmitter.

The RSD-D executes rapid system shutdown when the Transmitter signal is absent. Users can manually execute rapid shutdown using Transmitter breaker switch.
© All Rights Reserved
MODEL RSD-D-15 RSD-D-20

INPUT DATA (DC)
Range of Input Operating Voltage 8-65V Per Channel
Max. Input Voltage 80V
Maximum Cont. Input Current (Imax) 15A Per Channel 20A Per Channel Maximum Short Circuit Current（Isc） 25A

OUTPUT DATA (DC)
Range of Output Operating Voltage 16-130V
Max. Output Voltage 160V
Maximum Cont. Output Current 15A 20A
Maximum System Voltage 1000V/1500V
Maximum Series Fuse Rating 30A

MECHANICAL DATA
Operating Ambient Temperature Range -40 oF to +167 oF (-40 °C to + 75 °C) Dimensions (without cable & connectors) 5.5" x 2" x 0.8"(140 mm x 50.6 mm x 20 mm) Cable Length Input 500mm/Output 2200mm
Cable Cross Section Size TUV:4mm²/UL:12AWG
Connector Stäubli MC4 PV-KBT4&KST4 or Customize
Enclosure Rating NEMA Type 6P/IP68
Over temperature protection Yes

FEATURES & COMPLIANCE
Communication Compliance PLC
Safety Compliance NEC 2017 & 2020 (690.12); UL1741;
CSA C22.2 No. 330-17; IEC/EN62109-1
EMC Compliance FCC Part15; ICES-003
Raising the bar in innovative
DC MLPE solar power systems
> RSD-D TECHNICAL DATA
Appendix E - Full Roof Solar
Attachment 1
Item 8.c
Rev1.5 2021-12-02

ORDERING INFORMATION
426101 1500V UL/1000V TUV, 15A, 2.2m cable, Stäubli MC4 PV-KBT4&KST4 446101 1500V UL/1000V TUV, 20A, 2.2m cable, Stäubli MC4 PV-KBT4&KST4 4261xx* 15A, 2.2m cable, Customize connector
4461xx* 20A, 2.2m cable, Customize connector
*please see the RSD Series Ordering Information
① RSD-D
② Transmitter-PLC
③ Inverter*
*Only (+) or (-) through core
*If the inverter includes an integrated
SunSpec-certified Rapid Shutdown
Transmitter, remove the external
transmitter-PLC in the wiring diagram.
600 Ericksen Ave NE, Suite 200 Seattle, WA 98110 | +1-737-218-8486 | +1-866-374-8538 | [email protected] | APsmartGlobal.com > RSD-D WIRING DIAGRAM
> WORKING SCHEMATIC DIAGRAM
Appendix E - Full Roof Solar
Attachment 1
Item 8.c
Rev2.6 2023-06-25

TRANSMITTER-PLC

OUTDOOR KIT
The APsmart Rapid Shutdown System Transmitter-PLC is part of a rapid shutdown solution when paired with APsmart RSD, a PV module rapid shutdown unit. While powered on, the Transmitter-PLC sends a signal to the RSD units to keep their PV modules connected and supplying energy.

RSD units automatically enter rapid shutdown mode when the Transmitter-PLC is switched off and resume energy production when power is restored to the Transmitter-PLC. This solution complies with NEC 690.12 specifications for 2017&2020 and supports the SunSpec signaling for rapid shutdown.

Transmitter-PLC Outdoor Kit includes a Transmitter-PLC with one or two cores, outdoor enclosure, 85-264VAC or 180-550VAC power supply. It could be used in residential or commercial project.

Raising the bar in innovative
DC MLPE solar power systems
 Meets NEC 2017&2020 (690.12) requirements
 Switching off Transmitter-PLC results in rapid
shutdown of the output of PV modules
 Meets SunSpec requirements
 Equipped with single/dual core
 Optional 85-264VAC power supply
 Optional 180-550VAC power supply
*PV1+
*PV2+ *Only (+)or(-)through core
*Only (+)or(-)through core
*PV1+
*PV2+
① RSD
② Transmitter-PLC Outdoor Kit
③ Inverter
① RSD
② Transmitter-PLC Outdoor Kit
③ Inverter
④ Emergency stop button box
(optional): Press the emergency
stop button, the transmitter AC
power supply is disconnected, the
RSD closes the output, and the
system rapid shutdown.

Appendix E - Full Roof Solar
Attachment 1
Item 8.c
Rev2.6 2023-06-25
Main electrical data
Input Voltage 12 VDC
Input Current 0.8A
Communication PLC
Power Supply
Residential（optional） 85-264VAC Input, 12VDC Output, 90 mm x 17.5 mm x 58.4 mm Commercial（optional） 180-550VAC Input, 12VDC Output, 125.2 mm x 32 mm x 102 mm Core data
Max. Current 150A Per core
Max. System Voltage 1500VDC
Internal Opening for Wires/Outside Dimensions ~29mm/65mm Max. Supported PV Modules per String 30 modules
Max.Number Of Strings Per Core
DC Cable Diameter Φ5.9mm Φ6.35mm Φ7mm Φ8.6mm
Number Of Strings Per Core(without connector) ≤15 ≤15 ≤14 ≤10 Environmental
Temperature -40℃～+60℃
Structure data
Dimensions (W x H x D) 198.5 mm x 298 mm x 179 mm
Enclosure Environmental Rating IP65
Features & Compliance
Safety Compliance NEC 2017&2020 (690.12); UL1741; CSA C22.2 No. 330-17 EMC Compliance FCC Part15; ICES-003

ORDERING INFORMATION
408004 Single Core Transmitter-PLC-Outdoor Kit, 180-550VAC Power Supply 408005 Dual Core Transmitter-PLC-Outdoor Kit, 180-550VAC Power Supply 408006 Single Core Transmitter-PLC-Outdoor Kit, 85-264VAC Power Supply 408007 Dual Core Transmitter-PLC-Outdoor Kit, 85-264VAC Power Supply 408010 Single Core Transmitter-PLC-Outdoor Kit, 180-550VAC Power Supply, Emergency button 408011 Dual Core Transmitter-PLC-Outdoor Kit, 180-550VAC Power Supply, Emergency button 408012 Single Core Transmitter-PLC-Outdoor Kit, 85-264VAC Power Supply, Emergency button 408013 Dual Core Transmitter-PLC-Outdoor Kit, 85-264VAC Power Supply, Emergency button Transmitter-PLC Outdoor Kit
180-550VAC
Power Supply
(optional)
85-264VAC
Power Supply
(optional)
8627 N Mopac Expy, Suite 150, Austin, TX 78759 | +1-737-218-8486 | +1-866-374-8538 | [email protected] | APsmartGlobal.com Appendix E - Full Roof Solar
Attachment 1
Item 8.c
(EXISTING) (EXISTING)

UTILIZE EXISTING SPARE LOCATION ON THE MAIN SERVICE SWITCHBOARD OUTSIDE TO INTERCONNECT A PV SYSTEM. THE BREAKER WILL NEED TO BE

REPLACED WITH ONE THAT ALLOWS THE TRANSFER OF ENERGY IN BOTH DIRECTIONS. 3132 Tiger Run Ct. Suite 113, Carlsbad, CA 92010 tel (858) 449-3066 | www.cpcarchitects.com c p c a r c h i t e c t s

FEASIBILITY STUDY PRELIMINARY CONCEPT PV SYSTEM POTENTIAL AND CAPABILITIES FINAL DOCUMENT PACKAGE 12/19/2025 Appendix E -
RooftopSolarOptions
Attachment 1
(EXISTING)

THE MAXIMUM AMOUNT OF SOLAR THAT WOULD AVOID

CHANGING THE MAIN SERVICE IN ANY SIGNIFICANT WAY IS
5,000 SF.

THE 13,000 SF SHOWN IS THE AN AVAILABLE AREA FOR
THE POTENTIAL PV SYSTEM.
13,786.4 sf 3132 Tiger Run Ct. Suite 113, Carlsbad, CA 92010 tel (858) 449-3066 | www.cpcarchitects.com c p c a r c h i t e c t s

FEASIBILITY STUDY PRELIMINARY CONCEPT PV SYSTEM POTENTIAL AND CAPABILITIES

MAIN ELECTRICAL SERVICE EQUIPMENT LOCATION WHERE THE PV

SYSTEM CONDUIT WOULD NEED TO BE FED FROM
FINAL DOCUMENT PACKAGE 12/19/2025 Appendix E -
RooftopSolarOptions
Attachment 1
(EXISTING) (EXISTING) LOCATION OF PV BREAKER THAT WOULD NEED TO HAVE A CONDUIT RUN TO THE ROOF. POSSIBLE SPARE CONDUIT TO BE
UTILIZED. 3132 Tiger Run Ct. Suite 113, Carlsbad, CA 92010 tel (858) 449-3066 | www.cpcarchitects.com c p c a r c h i t e c t s

FEASIBILITY STUDY PRELIMINARY CONCEPT PV SYSTEM POTENTIAL AND CAPABILITIES (EXISTING) FINAL DOCUMENT PACKAGE 12/19/2025 Appendix E - RooftopSolarOptions
Attachment 1
Appendix F
Cost Estimate
Page | 194
Attachment 1
Item 8.c
Coronado Library & Roof HVAC : Project Name
Initial : Version
CPCA : Client
38,416 : Total Area (SF)
August 26, 2025 : Print Date
DESCRIPTION QUANTITY UOM $/SF TOTAL
Option 1 38,416 sf $108.96 $4,185,628
Estimate Totals 38,416 sf $108.96 $4,185,628
General Conditions 10.00% $418,563
General Requirements 2.00% $83,713
Construction Contingency 5.00% $313,451
Design Contingency 20.00% $837,126
Contractor's Insurance 1.20% $75,228
Fee 5.00% $313,451
Bond 1.00% $41,856
Total 38,416 sf $163.19 $6,269,015

Page 1 of 3 ends

Option 1 Appendix F - Cost Estimate
Attachment 1
Item 8.c
Coronado Library & Roof HVAC : Project Name
Initial : Version
CPCA : Client
38,416 : Total Area (SF)
August 26, 2025 : Print Date

DESCRIPTION QUANTITY UOM UNIT RATE TOTAL
Option 1

00.01 Make Ready/Temp Protection
Dust Protection - Temp Barriers 1.00 allow $15,000.00 $15,000 Fall Protection - Yellow Tape & Signage 1.00 allow $10,000.00 $10,000 Subtotal - 00.01 Make Ready/Temp Protection $25,000

02.02 Demo
Roof Opening for Clerestory Window (WINN Room) 680.00 sf $10.00 $6,800 Sawcut Break & Remove SOG for new Pad Footings 7.00 ea $1,500.00 $10,500 Sawcut Break & Remove SOG for UG Conduits from MSB to Building 1.00 allow $10,000.00 $10,000 Subtotal - 02.02 Demo $27,300

03.01 Concrete
4' Pad Footings to support Tube Steel Columns 7.00 ea $3,500.00 $24,500 Repair Site concrete for UG conduit 1.00 allow $20,000.00 $20,000 Subtotal - 03.01 Concrete $44,500

05.01 Structural Steel
6" HSS Posts 7.00 ea $4,000.00 $28,000
Steel Platfrom Framing for Rooftop Equipment 1.00 ls $140,000.00 $140,000 Subtotal - 05.01 Structural Steel $168,000

05.03 Misc Metals
Bar Grating for Steel Platform Framing 590.00 sf $112.00 $66,080 Tube Steel Posts for Roof Screen 17.00 ea $950.00 $16,150 Subtotal - 05.03 Misc Metals $82,230

06.01 Rough Carpentry
Framing at WINN Room Clerestory Window 1.00 ls $12,500.00 $12,500 Roof Framing Sister Supports 6.00 ea $7,500.00 $45,000
Subtotal - 06.01 Rough Carpentry $57,500

07.03 Roofing
Single Ply Membrane Roof W/ Tapered Insulation 39,462.00 sf $28.84 $1,138,142 Subtotal - 07.03 Roofing $1,138,142

07.04 Sheet Metal
Roof Screen 600.00 sf $75.00 $45,000
Subtotal - 07.04 Sheet Metal $45,000

08.03 Glass
Clerestory Window at WINN Room 260.00 sf $115.00 $29,900 Subtotal - 08.03 Glass $29,900

Page 2 of 3 ends

Option 1 Appendix F - Cost Estimate
Attachment 1
Item 8.c
Coronado Library & Roof HVAC : Project Name
Initial : Version
CPCA : Client
38,416 : Total Area (SF)
August 26, 2025 : Print Date

DESCRIPTION QUANTITY UOM UNIT RATE TOTAL

09.02 Framing & Drywall
Drywall Replacement at Water Damaged Locations (11) Total 1.00 allow $35,000.00 $35,000 Subtotal - 09.02 Framing & Drywall $35,000

09.08 Paint
Paint at Water Damaged Locations (11) Total 1.00 allow $10,000.00 $10,000 Subtotal - 09.08 Paint $10,000

22.01 Plumbing
Condensate & Storm Drain Improvements 1.00 ls $317,091.00 $317,091 Subtotal - 22.01 Plumbing $317,091

23.01 HVAC
DDC Controls 1.00 allow $372,228.00 $372,228
Insulation 1.00 ls $177,144.00 $177,144
Rooftop Equipment & Ductwork 1.00 ls $1,380,137.00 $1,380,137 TAB 1.00 ls $34,956.00 $34,956
Subtotal - 23.01 HVAC $1,964,465

26.01 Electrical
Coring 1.00 ls $10,000.00 $10,000
Equipment & Rentals 1.00 ls $12,000.00 $12,000
Power & Connections to new RTU's 1.00 ls $158,500.00 $158,500 Power and Connections for replacing units like for like 1.00 ls $38,000.00 $38,000 Safe Off for Demo 1.00 ls $23,000.00 $23,000
Subtotal - 26.01 Electrical $241,500
Subtotal - Option 1 $4,185,628

Page 3 of 3 ends

Option 1 Appendix F - Cost Estimate
Attachment 1
Item 8.c
Coronado Library & Roof HVAC : Project Name
Initial : Version
CPCA : Client
38,416 : Total Area (SF)
August 26, 2025 : Print Date
DESCRIPTION QUANTITY UOM $/SF TOTAL
Option 1A 38,416 sf $128.92 $4,952,582
Estimate Totals 38,416 sf $128.92 $4,952,582
General Conditions 10.00% $495,258
General Requirements 2.00% $99,052
Construction Contingency 5.00% $370,886
Design Contingency 20.00% $990,516
Contractor's Insurance 1.20% $89,013
Fee 5.00% $370,886
Bond 1.00% $49,526
Total 38,416 sf $193.09 $7,417,719

Page 1 of 3 ends

Option 1A Appendix F - Cost Estimate
Attachment 1
Item 8.c
Coronado Library & Roof HVAC : Project Name
Initial : Version
CPCA : Client
38,416 : Total Area (SF)
August 26, 2025 : Print Date

DESCRIPTION QUANTITY UOM UNIT RATE TOTAL
Option 1A

03.01 Concrete
4' Pad Footings to support Tube Steel Columns 7.00 ea $3,500.00 $24,500 Repair Site concrete for UG conduit 1.00 allow $20,000.00 $20,000 Subtotal - 03.01 Concrete $44,500

05.01 Structural Steel
6" HSS Posts 7.00 ea $4,000.00 $28,000
Steel Platfrom Framing for Rooftop Equipment 1.00 ls $140,000.00 $140,000 Subtotal - 05.01 Structural Steel $168,000

05.03 Misc Metals
Bar Grating for Steel Platform Framing 590.00 sf $112.00 $66,080 Tube Steel Posts for Roof Screen 17.00 ea $950.00 $16,150 Subtotal - 05.03 Misc Metals $82,230

06.01 Rough Carpentry
Framing at WINN Room Clerestory Window** 1.00 ls $12,500.00 $12,500 Roof Framing Supports at Screen ** 0.00 ls $7,500.00 $0 Subtotal - 06.01 Rough Carpentry $12,500

07.03 Roofing
Single Ply Membrane Roof W/ Tapered Insulation 39,462.00 sf $28.84 $1,138,142 Subtotal - 07.03 Roofing $1,138,142

07.04 Sheet Metal
Roof Screen 600.00 sf $75.00 $45,000
Subtotal - 07.04 Sheet Metal $45,000

08.03 Glass
Clerestory Window at WINN Room 260.00 sf $115.00 $29,900 Subtotal - 08.03 Glass $29,900

Page 2 of 3 ends

Option 1A Appendix F - Cost Estimate
Attachment 1
Item 8.c
Coronado Library & Roof HVAC : Project Name
Initial : Version
CPCA : Client
38,416 : Total Area (SF)
August 26, 2025 : Print Date

DESCRIPTION QUANTITY UOM UNIT RATE TOTAL

09.02 Framing & Drywall
Drywall Replacement at Water Damaged Locations (11) Total 1.00 allow $35,000.00 $35,000 Subtotal - 09.02 Framing & Drywall $35,000

09.08 Paint
Paint at Water Damaged Locations 1.00 allow $10,000.00 $10,000 Subtotal - 09.08 Paint $10,000

22.01 Plumbing
Condensate & Storm Drain Improvements 1.00 ls $317,091.00 $317,091 Subtotal - 22.01 Plumbing $317,091

23.01 HVAC
DDC Controls 1.00 allow $372,228.00 $372,228
Insulation 1.00 ls $177,144.00 $177,144
Rooftop Equipment & Ductwork 1.00 ls $1,380,137.00 $1,380,137 Rooftop HHW Plant & Piping 1.00 ls $170,000.00 $170,000 TAB 1.00 ls $34,956.00 $34,956
VAV's 1.00 ls $441,954.00 $441,954
Subtotal - 23.01 HVAC $2,576,419

26.01 Electrical
Coring 1.00 ls $12,000.00 $12,000
Equipment & Rentals 1.00 ls $20,000.00 $20,000
Power & Connections for replacing units like for like 1.00 ls $38,000.00 $38,000 Power & Connections to new RTU's 1.00 ls $158,500.00 $158,500 Power to VAV's 1.00 ls $40,000.00 $40,000
Rooftop 208V 600 AMP Panelboard 1.00 ls $95,000.00 $95,000 Rooftop Equipment Power Feeds 1.00 ls $55,000.00 $55,000 Safe Off for Demo 1.00 ls $23,000.00 $23,000
Subtotal - 26.01 Electrical $441,500
Subtotal - Option 1A $4,952,582

Page 3 of 3 ends

Option 1A Appendix F - Cost Estimate
Attachment 1
Item 8.c
Coronado Library & Roof HVAC : Project Name
Initial : Version
CPCA : Client
38,416 : Total Area (SF)
August 26, 2025 : Print Date
DESCRIPTION QUANTITY UOM $/SF TOTAL
Option 2 38,416 sf $96.76 $3,717,156
Estimate Totals 38,416 sf $96.76 $3,717,156
General Conditions 10.00% $371,716
General Requirements 2.00% $74,343
Construction Contingency 5.00% $278,368
Design Contingency 20.00% $743,431
Contractor's Insurance 1.20% $66,808
Fee 5.00% $278,368
Bond 1.00% $37,172
Total 38,416 sf $144.92 $5,567,362

Page 1 of 3 ends

Option 2 Appendix F - Cost Estimate
Attachment 1
Item 8.c
Coronado Library & Roof HVAC : Project Name
Initial : Version
CPCA : Client
38,416 : Total Area (SF)
August 26, 2025 : Print Date

DESCRIPTION QUANTITY UOM UNIT RATE TOTAL
Option 2

00.01 Make Ready/Temp Protection
Dust Protection - Temp Barriers 1.00 allow $7,500.00 $7,500 Fall Protection - Yellow Tape & Signage 1.00 allow $10,000.00 $10,000 Subtotal - 00.01 Make Ready/Temp Protection $17,500

02.02 Demo
Roof Opening for Clerestory Window (WINN Room) 680.00 sf $10.00 $6,800 Subtotal - 02.02 Demo $6,800

06.01 Rough Carpentry
Framing at WINN Room Clerestory Window 1.00 ls $12,500.00 $12,500 Subtotal - 06.01 Rough Carpentry $12,500

07.03 Roofing
Single Ply Membrane Roof W/ Tapered Insulation 39,462.00 sf $28.84 $1,138,084 Subtotal - 07.03 Roofing $1,138,084

08.03 Glass
Clerestory Window at WINN Room 260.00 sf $115.00 $29,900 Subtotal - 08.03 Glass $29,900

09.02 Framing & Drywall
Drywall Replacement at Water Damaged Locations (11) Total 1.00 allow $35,000.00 $35,000 Subtotal - 09.02 Framing & Drywall $35,000

09.08 Paint
Paint at Water Damaged Locations 1.00 allow $10,000.00 $10,000 Subtotal - 09.08 Paint $10,000

22.01 Plumbing
Condensate & Storm Drain Improvements 1.00 ls $233,958.00 $233,958 Subtotal - 22.01 Plumbing $233,958

23.01 HVAC
DDC Controls 1.00 allow $348,416.00 $348,416
Insulation 1.00 ls $119,384.00 $119,384
Replace all RTU's Like for Like (Aaon) 1.00 ls $1,310,257.00 $1,310,257 Roof Ducting 1.00 ls $56,690.00 $56,690
Split System (CRAC units & Carrier) 1.00 ls $278,948.00 $278,948 TAB 1.00 ls $32,719.00 $32,719
Subtotal - 23.01 HVAC $2,146,414

26.01 Electrical

Page 2 of 3 ends

Option 2 Appendix F - Cost Estimate
Attachment 1
Item 8.c
Coronado Library & Roof HVAC : Project Name
Initial : Version
CPCA : Client
38,416 : Total Area (SF)
August 26, 2025 : Print Date

DESCRIPTION QUANTITY UOM UNIT RATE TOTAL
Disconnect & Reconnect Units Like for Like 1.00 ls $87,000.00 $87,000 Subtotal - 26.01 Electrical $87,000
Subtotal - Option 2 $3,717,156

Page 3 of 3 ends

Option 2 Appendix F - Cost Estimate
Attachment 1
Item 8.c
1 0 1 | Clarifications and Exclusions

BASIS OF BID
This bid was based on 08/15/25 Preliminary Drawings

CLARIFICATIONS AND EXCLUSIONS

GENERAL

1.1. Costs associated with the following items are excluded and assumed to be covered by the owner.

1.1.1. Permit fees of any kind.

1.1.2. IOR/City/HCAI/AHJ inspection.

1.1.3. Special inspections and/or third party testing.

1.1.4. Hazardous abatement.

1.1.5. Owner equipment, artwork, and furniture.

1.1.6. Consultants (site survey, ADA, waterproofing, etc.).

1.1.7. End-user request and/or modifications.

1.1.8. Design changes after construction has begun.

1.1.9. Pre-existing and non-compliant issues.

1.1.10. Labor and Material Escalation

1.2. Additional general conditions may be required if changes impact our critical path.

1.3. We have considered non-prevailing wage rates.

1.4. We have not included union-only subcontractors.

1.5. We have considered normal working hours.

1.6. We have excluded the cost of Builders Risk Insurance and have assumed that that a policy will be put into place if not already secured. We reserve the right to request a copy for review and the opportunity to secure additional insurance coverage if there is a difference in risk coverage.

1.7. No costs have been considered for Acts of God or force majeure. Damage caused by weather, earthquake, or fire is not covered in our cost of work.

1.8. If Align Builders is asked to submit paperwork and obtain the building permit, we will request reimbursement at cost plus time spent plus fee markup.

1.9. We assume that we can use the potable water available within the job limits and construction consumption costs will be paid for by the Owner.

1.10. We assume existing power and lighting can be used during construction. We assume that consumption costs will be paid for by the Owner.

1.11. All Owner Vendors and/or outside consultants working within the project limits must carry insurance listing Align Builders, Inc. as additionally insured.

1.12. No costs have been included for building-wide fire watch or security. Fire watch will be provided during hot work only.

1.13. We assume the City of Coronado is responsible to ascertain that the building is free from toxic or otherwise harmful substances, including asbestos and PCB’s. We assume the City of Coronado will provide documentation stating the building is “clean.”

1.14. Mock-ups are excluded.

1.15. We have not included cost to design or provide any signage or artwork.

1.16. We have not included domestic-only material.

1.17. We have included standard equipment startup and testing. We have not included third party commissioning testing or agent.

1.18. We have excluded seismic upgrades to any existing system.

1.19. We have excluded internal or 3rd party LEED documentation or participation in LEED certification.

N/A - Intentionally Skipped
Appendix F - Cost Estimate
Attachment 1
Item 8.c
2 0 1 | Clarifications and Exclusions

1.20. We have not included BIM coordination/clash detection or 3D shop drawings or modeling.

1.21. We have assumed that the interior shell is free from defects and that no pre-existing conditions will impact new finishes.

1.22. We exclude any work to update existing conditions to meet current code compliance, UNO on the drawings.

DIV 01: GENERAL REQUIREMENTS

1. Temporary Protection
a. We have included an allowance for yellow caution tape and signage surrounding the leading edge of the entire roof.

DIV 02: EXISTING CONDITIONS

1. Infection/Dust Control
a. We have included an allowance soft barriers ( visqueen zip walls).

2. Demolition
b. Pricing is based on the existing AC and dirt excavated material from trench is clean waste (ex: asphalt NOT containing petromat) and can be taken to an appropriate dump site.
c. We have included an allowance to remove site paving and concrete to support UG conduit. We have assumed this trench will be 30’ long, 4’ wide, & 3’ deep.

DIV 03: CONCRETE

1. We have included (7) 4’ square pad footings at 1.5’ deep to support the tube steel columns.

2. We have
DIV 05: METALS

1. Misc. Metals
a. HSS Posts on Pad Footings are qualified at 18’ in height.

DIV 06: WOOD, PLASTICS, AND COMPOSITES

1. Rough Carpentry
a. We have included Sister framing at (6) locations to accommodate screen bracing.

DIV 07: THERMAL AND MOISTURE PROTECTION

1. Roofing
a. We have included removal of the existing roof system. b. We have included a fully adhered single ply 60 mil TPO roof membrane over ¼” cover board, over tapered rigid foam system.
c. We have included Tapered Rigid Iso or equal crickets for proper drainage. d. We have included 400’ of roof walk pads.
e. We have included a 20-year warranty and maintenance agreement.

2. Sheetmetal
a. We have included 600/sf of perforated sheet metal panel at the roof screen wall.

DIV 08: OPENINGS

1. Windows
a. At the Winn Roof, we have included an Arcadia Storefront system, with clear 1” Solarban 90.

Appendix F - Cost Estimate
Attachment 1
Item 8.c
3 0 1 | Clarifications and Exclusions
DIV 09: FINISHES

1. Gypsum Board
a. We have included an allowance for drywall patches related to roof leaks at (11) locations.

2. Paint
a. We have included an allowance for (11) locations due to water damage. b. We have excluded epoxy or high-performance paints.

DIV 21: FIRE SUPPRESSION

1. We have excluded all fire sprinkler scope of work.

DIV 22: PLUMBING

1. We have included all condensate and roof drains.

DIV 23: HVAC

1. We have included removal & haul off all existing rooftop units scheduled to be removed.

2. We have included an allowance to provide DDC controls.

3. We have assumed all interior work will be limited to nights and all rooftop work will be allowed during normal business hours.

4. We have included all crane costs.

DIV 26: ELECTRICAL

1. The installation of new breakers will require a temporary outage for safety.

2. Budget assumes the use of existing electrical distribution.

3. Budget assumes there is enough breaker space to add any new breakers needed.

4. Budget assumes all existing to remain electrical equipment and devices are in working order.

Trouble shooting and re-energizing is not included.

5. We have assumed all outdoor above conduit to be EMT.

6. We have assumed that trenching will needed to get conduits from RTU’s from MSB across the sidewalk to the building, and have included all UG conduit and wire to accommodate.

7. For option 1A, the air source heat pump is shown as 408V, but there is currently no 408V on site. We have qualified this to be changed to 208V.

DIV 28: ELECTRONIC SAFETY AND SECURITY

1. Fire Detection Alarm
a. We have excluded all fire alarm scope of work.

DIV 26: ELECTRICAL

1. The installation of new breakers will require a temporary outage for safety.

2. Budget assumes the use of existing electrical distribution.

3. Budget assumes there is enough breaker space to add any new breakers needed.

4. Budget assumes all existing to remain electrical equipment and devices are in working order.

Trouble shooting and re-energizing is not included.

5. We have assumed all outdoor above conduit to be EMT.

6. We have assumed that trenching will needed to get conduits from RTU’s from MSB across the sidewalk to the building, and have included all UG conduit and wire to accommodate.

7. For option 1A, the air source heat pump is shown as 408V, but there is currently no 408V on site. We have qualified this to be changed to 208V.

DIV 28: ELECTRONIC SAFETY AND SECURITY

1. Fire Detection Alarm
a. We have excluded all fire alarm scope of work.

We have assumed all zoning to remain as existing, therefore no interior ductwork changes were included other than those required to install VAVs in option 1A

5. 8. We have excluded solar costs. Appendix F - Cost Estimate Attachment 1
Item 8.c
Appendix G
City of Coronado Building
Assessment Report
Page | 207
Attachment 1
Item 8.c
City of Coronado Building Assessment – Facilities Report City of Coronado – Building Assessment Report
Building Name: Library
Building Type: Buildings
Building Location: 640 Orange Ave
Gross SF / Area: 40,000 SF
Floors: 1

RELEVANT ISSUES / RECOMMENDATIONS
Exterior Conditions:

The Coronado Library is a
single-story, steel-framed
structure with exposed CIP
concrete and plaster.

Renovation activities in 2002
included expansions of both the
front and rear portions of the
library with steel structural
framing, CIP columns, a single
ply roof system and glazing with
sunshades. The renovation at
the front included a high ceiling
area for a new lobby and
circulation desk near the
entrance.

The exterior wall finishes are in
good condition with no visible
cracking, damage or spalling of
the CIP walls. The plaster finish
at the original library is in good
condition. A water leak was
reported at a window at the
southeastern corner of the
original library. We
recommend the leak be
investigated to determine if the
source is from the roof, the
plaster/seal above the widow,
or through the window seal.

The existing building roof installed during the renovation is a single ply TPO system over insulation board and is susceptible to leaks at seams and corners where the membrane was heat welded. The roof is nearly 20 years old and near the limit of its life expectancy. The roof drainage system includes catch basins with overflows and concealed gutters that discharge to the perimeter of the building. Evidence of ponding, debris and corroded debris guards was observed on and around the roof drain inlets indicating drain blockages which may lead to water intrusion. We recommend the inlets and downpipes Photo 2 –Lobby/ Circulation
Photo 4 – West Side Expansion
Photo 1 –Original Building
Photo 3 – North Face CIP
Photo 5 – Water Infiltration Photo 6 – Water Infiltration Appendix G - City of
Coronado Building
Attachment 1
Assessment Report
Item 8.c
City of Coronado Building Assessment – Facilities Report be inspected and cleaned to ensure unrestricted
drainage. We recommend the roof be replaced
with a more durable single ply PVC system which
can be applied over the existing roof materials.

Glazing Weather Seal
The sealant around the upper window mullions
near the circulation desk were observed to be
damaged which may allow water infiltration. The
seal should be evaluated and repaired.

Mechanical Equipment
The mechanical system includes (15) packaged
gas electric units; (2) split system heat pumps; (2)
computer room split systems; and (6) exhaust
fans. The mechanical systems were
manufactured in 2003 and have exceeded their
designed life expectancy. Corrosion was
observed on the condenser coils which reduces efficiency. The roof ductwork was observed to be similarly corroded particularly on seams and joints that may allow moisture infiltration. We recommended the mechanical systems and ductwork be replaced to improve energy efficiency and air quality.

Because the mechanical systems are roof mounted and integrated with the roofing system, replacement of the equipment and ducting should be coordinated with the roof replacement.

The exterior doors appear to be functioning properly. No visible damage or defects were identified. The exterior lighting fixtures appear to be in good condition. However, we recommend the system be evaluated for upgrade to a more energy efficient LED system.

Interior Conditions:

The interior finishes at the library include exposed concrete, painted drywall, and wall tile in the restrooms. We recommended painting be scheduled to address the wear in the high use areas and restrooms and minor wall repairs be conducted where carts and chairs have left scratches.

Drywall and painting will be required to address the water damage above the southeastern windows in the original library (noted previously) after the water intrusion issue is resolved.

The restroom partitions and accessories should be scheduled for replacement due to the age and wear. The plumbing fixtures should also be planned for replacement to improve the efficiency and upgrade to auto-flush valves.

Photo 12 – Restrooms
Photo 8 – Debris on roof
Photo 11 –Roof Duct
Photo 10 – HVAC Unit
Photo 7 – Roof drain inlets
Photo 9 – Sealant
Appendix G - City of
Coronado Building
Attachment 1
Assessment Report
Item 8.c
City of Coronado Building Assessment – Facilities Report No immediate safety issues were identified regarding the restroom floor and wall tile. However, we recommended they be scheduled for replacement in later fiscal years of this maintenance schedule to provide a slip-resistant floor texture, update to current ADA code, and improve aesthetics. Upgrading the flooring and wall tile should be coordinated with replacement of the restroom fixtures.

The interior doors and hardware are recommended to be repaired or replaced due to age and wear.

Multiple water heating units were observed to serve the restrooms and mop sinks. These should be evaluated for either in-kind replacement or upgrading to energy efficient tankless systems.

The ceiling lights in areas not renovated are recommended to be upgraded with LED fixtures which will improve energy efficiency and provide additional light management/programing capability.

Photo 13 – Water Heater Picture 14 – ACT Ceiling
Photo 15 - Restroom Photo 16 - Breakroom
Photo 17 – Light Fixtures Photo 18 – Kitchen/Breakroom
Appendix G - City of
Coronado Building
Attachment 1
Assessment Report
Item 8.c

HVAC COMPARATIVE FEATURES SUMMARY
Key Parameter Option 1
Consolidated RTUs
Option 1A
Consolidated RTUs with VAV and Hot Water
Reheat Coils
Option 2
In Kind Replacement
Mechanical Solution  Consolidate existing RTUs into 3 larger RTUs  New units to be installed on vibration isolation
curbs and located over glulam beams where
possible to minimize structural upgrades
 Double-walled, insulated rooftop ductwork
 Replace RTUs 1,8,9, and 10 with one RTU
 Replace RTUs 2,3,14, and 15 with one RTU
 Replace RTUs 4,11, and 12 with one RTU
 All other RTUs to be replaced in kind
 Same as option 1 and includes:
 Replace all zone dampers with new terminal
VAV boxes equipped with HHW heating coils
 Install new VAVs with heating coils where
zonal dampers do not exist
 Install a new rooftop HHW plant: water
heater, expansion tank, circulating pumps,
air separator
 Replace all RTUs with like for like units
 Maintain existing capacity and
configuration
 Existing ductwork and curbs to be reused
where possible
EƯiciency Moderate to High High Moderate
Humidity Control Good Excellent Good
Zoning Flexibility Moderate High Low
Electrification Ready Moderate electrical upgrades required Major electrical upgrades required Minor electrical upgrades Ceiling Impact Medium High Low
Controls Complexity Medium High Low
Structural Impact* High-Triggers CA Existing Building Code (CEBC) retrofit High-Triggers CEBC retrofit Low-Within CEBC thresholds Facility Disruption during
Install
High High Low
Schedule 9-10 months (assumed 3 phases) + 7 mos for delivery 9-10 months (assumed 3 phases) + 7 mos for delivery 7-8 months (assumed 3 phases) + 7 mos for delivery Construction Cost Estimate $6.3M $7.4M $5.6M
Recommendation Not Recommended – Though this option adds eƯiciency to the cooling system, the increased cost is significant.

Additionally, the construction of this system is more
intrusive to the building.

Not Recommended – Though this option adds
eƯiciency and increases temperature controls, cost
for this option is significant and additional features
not needed by Library staƯ.

Recommended – This option is the most cost
eƯective with the fewest disruptions to the library.

Cooling capacity, strategy, and controls all match
existing and meet needs.

Attachment 2
Item 8.c

CITY COUNCIL STAFF REPORT

Consideration of a Resolution Adopting Crown City March as the Official City March of Coronado

RECOMMENDATION
Consider the resolution to adopt Crown City March as the official city march and provide direction to staff, as appropriate.

BACKGROUND
The Coronado Concert Band has submitted a proposal requesting that the City Council formally designate Crown City March as the official city march of Coronado. The composition was commissioned by the Coronado Concert Band for its twenty-fifth anniversary and is dedicated to the community.

Historically, various municipalities and military branches have adopted official marches for use during civic ceremonies and public events.

ANALYSIS
The composition incorporates musical themes intended to reflect local history and geography.

Additionally, the march includes melodic references to Anchors Aweigh and The Navy Hymn, intended to acknowledge the presence of Naval Air Station North Island and the military history of the region.

If the City Council chooses to adopt an official march, it would establish a standard musical piece for use at City-sponsored events. However, formal adoption should consider a clear determination of intellectual property rights. This includes ensuring the City has the necessary permissions to perform, record, and broadcast the music without restriction or recurring royalty obligations.

FISCAL IMPACT
The fiscal impact of this action is dependent upon the selected alternative. If the City chooses to pursue licensing or ownership of the composition, there may be costs associated with legal review or the acquisition of rights.

ALTERNATIVE
Alternatively, the City Council may direct staff to work with the Coronado Concert Band and the composer to investigate and secure the necessary licensing rights. This action would ensure the City holds the legal authority to use the music in perpetuity across various media platforms before a formal adoption occurs.

The City Council may also choose to decline the proposal, maintaining the current status quo where no official city march is designated.

Finally, the City Council may defer the matter and direct staff to return with additional information regarding the logistical use of the march.

CALIFORNIA ENVIRONMENTAL QUALITY ACT
This action is not subject to CEQA.

PUBLIC NOTICE
No public notice is required for this item.

Item 8.d

ATTACHMENTS

1. Resolution 2026-14
Submitted By: City Manager's Office / Tina Friend
Item 8.d
Attachment 1
RESOLUTION NO. 2026-14

A RESOLUTION OF THE CITY COUNCIL OF THE CITY OF

CORONADO, CALIFORNIA, ADOPTING CROWN CITY

MARCH AS THE OFFICIAL CITY MARCH OF THE CITY

OF CORONADO
WHEREAS, the Coronado Concert Band commissioned the musical composition titled Crown City March in recognition of the organization's twenty-fifth anniversary; and WHEREAS, the composition was dedicated to the Coronado community to serve as a musical representation of the city's history and local identity; and WHEREAS, the musical arrangement incorporates thematic elements intended to reflect the local geography and historical timeline; and WHEREAS, the work further includes melodic allusions to naval traditions, acknowledging the longstanding relationship between the City of Coronado and the United States Navy, specifically Naval Air Station North Island; and WHEREAS, the City Council finds that the designation of an official city march provides a formal musical emblem for use at civic ceremonies, public celebrations, and other official municipal events.

NOW, THEREFORE, BE IT RESOLVED by the City Council of the City of Coronado that the composition titled Crown City March, as documented in the sheet music attached hereto as Exhibit A and incorporated herein by this reference, is hereby adopted and designated as the Official City March of the City of Coronado.

NOW, THEREFORE, BE IT FURTHER RESOLVED that the City Clerk is directed to maintain the official sheet music within the City’s permanent records and to ensure that the designation is noted in relevant municipal archives.

PASSED, ADOPTED, AND APPROVED by the City Council of the City of Coronado, California, at a regular meeting thereof this seventh day of April, 2026 by the following vote to wit:

AYES:

NAYS:

ABSTAIN:

ABSENT:

Item 8.d
Attachment 1
APPROVED:
____________________________________
JOHN D. DUNCAN, Mayor of the
City of Coronado, California
ATTEST:
__________________________________
KELSEA HOLIAN, City Clerk of the
City of Coronado, California
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CITY COUNCIL STAFF REPORT

Quarterly Cross-Border Water Quality Update

RECOMMENDATION
Receive an update on recent activities regarding cross-border water pollution.

BACKGROUND
Following a long history of City of Coronado engagement in ocean water quality advocacy, in 2023 the City Council authorized the formation of an ad hoc City Council subcommittee on cross-border water pollution. In 2024 and 2025, the City Council authorized similar subcommittees. On March 17, 2026, the City Council authorized the Border Water Quality Advisory Subcommittee to continue the City’s strong policy and funding advocacy, information sharing and coordination. Mayor Duncan and Councilmember Fleming were appointed to serve on the Council subcommittee.

In addition, Councilmember Downey continues on the National League of Cities (NLC) Energy, Environment and National Resources Committee, advocating for cross-border water pollution on the national platform. Councilmember Fleming also serves as a City representative to the NLC.

Councilmember Steward serves as the San Diego County representative on the Cal Cities Coastal Cities Group, advocating for ocean water quality and issues affecting the entire San Diego coastline.

The City’s collective focus is to advance essential improvements and sustained maintenance investments for the International Boundary & Water Commission’s (IBWC) South Bay International Wastewater Treatment Plant, Mexico’s San Antonio de los Buenos Wastewater Treatment Plant (SAB Plant or Punta Bandera) and related infrastructure to stop cross-border water pollution.

This report provides an opportunity for quarterly updates on activities.

ANALYSIS
United States-Mexico-Canada Agreement (USMCA)
The past quarter saw continued advocacy with federal officials, notably for accountability measures to be negotiated in the revised United-States-Mexico-Canada (USMCA) trade agreement to deliver expedited and sustainable solutions to cross-border water pollution.

The City of Coronado tendered a comment letter to United States Trade Representative (USTR) Ambassador Jamieson Greer on November 3, 2025 (Attachment 1). In early December 2025, the City’s Washington, D.C. advocate testified on Coronado’s behalf at a USTR public hearing on the USMCA. Our testimony was one of only two focused on environmental considerations and it was very well received.

In March 2026, at the invitation of the USTR, Mayor Duncan traveled to Washington, DC to further the conversation of the USMCA as an important vehicle to compel future responsibility and accountability for sewage and pollution generated by Mexico.

Additional Advocacy Efforts
Since the last update, the City’s advocacy efforts have continued through ongoing regional and federal discussions.

Item 8.e
On February 5, 2026, Coronado hosted a principal-level roundtable discussion requested by US Environmental Protection Agency (EPA) Administrator Lee Zeldin and U.S. Small Business Administration (SBA) Administrator Kelly Loeffler. The assembled leaders included members of Congress, state officials and mayors who shared concerns and ideas about handling the crisis. This meeting was an unprecedented event in Coronado and reflected the engagement of the highest levels of the federal government.

On March 24, 2026, officials from the cities of Coronado and Imperial Beach, and the Port of San Diego met to discuss points of joint cooperation and advocacy. The next day on March 25, 2026, Mayor Duncan and Imperial Beach Mayor McKay met with IBWC Commissioner Chad McIntosh and IBWC Area Operations Manager Emily Allen to discuss the status of the South Bay International Wastewater Treatment Plant construction projects.

Coronado officials will join the next San Diego Regional Chamber of Commerce (Chamber) delegation to Washington, DC in April 2026 to advocate for cross-border water quality solutions. In March 2026, the Chamber issued a report: “Tijuana River Contamination Crisis: A Five- Pillar Framework for Binational Solutions”, which can be found on the Chamber website.

In addition, the Mayor and Councilmembers actively engage in regional meetings with the Tijuana River Working Group, CalCities Coastal Cities meetings and others.

Status of U.S. EPA / IBWC and Mexico Wastewater Infrastructure Projects In August 2025, the IBWC received a 10 million gallon per day (MGD) increase, from 25 MGD to 35 MGD, expansion in treatment capacity. This expansion was effected through temporary, mobile treatment units intended to bridge the gap until the permanent expansion is completed. The IBWC continues to work on the permanent expansion of treatment capacity to 50 MGD, a doubling of the current capacity, by December 2027. In 2025, IBWC installed a pilot program for nanobubble ozone treatment and in December, released a report on the outcome of the pilot program (Attachment 2).

Continuation of Local Emergency Declaration
The City Council continued its “Declaration of Local Emergency Due to Impacts from Cross-Border Water Pollution” on March 17, 2026. As required by State law, the City Council will evaluate the continuation of this declaration every 60 days.

FISCAL IMPACT
There is no direct fiscal impact associated with this item.

ALTERNATIVE
The City Council may provide alternate direction.

CALIFORNIA ENVIRONMENTAL QUALITY ACT
This action is not subject to CEQA.

PUBLIC NOTICE
No public notice is required for this item.

ATTACHMENTS

1. USMCA Comment Letter from City of Coronado (November 3, 2025)

2. IBWC Press Release and Ozone Pilot Project Report (December 19, 2025) Submitted By: City Manager's Office / Tina Friend
Item 8.e
November 3, 2025
The Honorable Jamieson Greer
Director
Office of the United States Trade Representative
600 17th Street NW
Washington, D.C. 20508
Re: Request for Comments on the Operation of the Agreement between the United States of America, the United Mexican States, and Canada, docket number USTR2025-0004 Dear Ambassador Greer,
On behalf of the City of Coronado, California, a border-community that is proudly home to Naval Base Coronado, home port to three aircraft carriers, the United States Naval Special Warfare Command, the U.S. Navy SEAL Basic Underwater Demolition/SEAL (BUD/S) program, North Island Naval Air Station, and Command, Naval Air Forces, thank you for the opportunity to submit comments regarding the Joint Review process of the United States-Mexico-Canada Agreement (USMCA).

Background
For decades, uncontrolled growth in the City of Tijuana, Baja California, has impacted communities in South San Diego County. Poor maintenance, and lack of enforcement of even basic development standards have allowed millions of gallons of raw sewage to discharge into the Tijuana River Valley, the Pacific Ocean and onto our region’s beaches.

The impact has been horrendous for border protection agents; it has been devastating for the tourism economy in neighboring Imperial Beach; it has harmed the health of our residents; and it has affected Naval training and force readiness.

In his first term, President Trump was instrumental in allocating funds for infrastructure improvements in the United States that would alleviate the problem. Since taking office his administration has acted swiftly to start construction and obtain commitments from Mexico on future management and improvement. The will is there, the money is there and most importantly, the leadership is there to complete the projects necessary to protect our community. We are immensely grateful.

The Office of the United States Trade Representative (USTR) was likewise instrumental in helping marshal resources and attention to the sewage issue. Much of the progress we have seen to date is the direct result of the USMCA Section 821, which required the United States Environmental Protection Agency (EPA) to construct projects on the U.S. side of the border to address cross border pollution and allocated $300 million towards these projects. USTR also negotiated improved environmental controls into the USMCA that provide greater protection for both the environment and our economy. The two issues Attachment 1
Item 8.e
City of Coronado Comment Letter – USTR-2025-0004
November 3, 2025

Page 2 ends

are inextricably linked. Growth in Tijuana is a direct result of the increase in production, jobs and the cross-border trade that was facilitated by the North American Free Trade Agreement (NAFTA) and the USMCA. Failure to invest in environmental controls creates an economic advantage, the cost of which is borne by others – in this case, communities in the United States.

The San Diego-Tijuana region has been dealing with the transboundary flows of raw sewage and debris originating from Mexico for decades. Contamination from Mexico has major impacts on the economy, quality of life and most importantly public health and safety of the region. The City supports all efforts to eliminate these flows and the impacts they have on communities in San Diego County.

We are thankfully at a point where the federal government has allocated most of the resources necessary to solve the immediate crisis, and construction is underway to build the projects necessary to complete job. However, long term, structural controls are required to ensure that Mexico does not repeat the failures that led to the current situation.

The City believes that the USMCA is an appropriate vehicle for such controls because of the relationship between free trade, economic growth and the potential for environmental degradation in Tijuana.

Response to Request for Comments
On September 17, 2025, USTR published a request for comments and notice of hearing in the Federal Register. (90 Fed. Reg. 44869.) USTR has asked for comments on the following:
 Any aspect of the operation or implementation of the USMCA.  Any issues of compliance with the Agreement.
 Recommendations for specific actions that USTR should propose ahead of the Joint Review to promote balanced trade, new market access, and alignment on economic security with Mexico and Canada.
 Factors affecting the investment climate in North America and in the territories of each Party, as well as the effectiveness of the USMCA in promoting investment that strengthens U.S. competitiveness, productivity, and technological leadership.  Strategies for strengthening North American economic security and competitiveness, including collaborative work under the Competitiveness Committee, and cooperation on issues related to non-market policies and practices of other countries.

In response to USTR’s request for comment, I ask that USTR incorporate the following concepts into the Joint Review. These requests are conceptual at this point because there are a variety of ways to achieve the desired outcome. If implemented, they would Attachment 1
Item 8.e
City of Coronado Comment Letter – USTR-2025-0004
November 3, 2025

Page 3 ends

strengthen North American economic security and competitiveness, and more importantly, protect our community from future public health crises. 1) Enforcement Mechanism to Ensure Mexico Continues to Control Sewage The City strongly supports use of any mechanism to ensure that Mexico stops sending raw sewage and toxic waste into the United States and establishes adequate infrastructure to control and treat these flows. Although substantial progress has been made, it has become clear that additional enforcement mechanisms must be put into place to ensure that Mexico does not continue to send pollution north into the United States as the Tijuana region experiences ongoing rapid growth.

In both NAFTA and the USMCA, the parties relied mostly on incentive programs to encourage Mexico to construct and maintain its infrastructure. NAFTA created the North American Development Bank (NADB) to provide loans and grant funds for projects in the border zone. Congress created the Border Water Infrastructure Program (BWIP) to provide grant and loan funds to NADB. USMCA continued those efforts by capitalizing NADB with nearly $1 billion in additional funds to allow them to continue their good work.

Unfortunately, incentives alone have been ineffective at preventing the crisis facing our community. Compliance must achieved through a combination of encouragement and consequences. The City therefore requests that during the USMCA’s Joint Review process, USTR and the White House include enforceable controls in the renegotiated USMCA so that if Mexico does not abide by its obligations, there will be real, measurable consequences. Such controls could include economic, trade and monetary penalties that provide impactful consequences for a failure to maintain infrastructure in Mexico that causes pollution in the United States. The City is generally supportive of any controls, but is especially interested in further discussion with USTR on how to most effectively incentivize Mexico to continuously monitor and improve its infrastructure’s capacity and treatment capability over the long term – for the benefit of their citizens and ours. Input from EPA, IBWC and NADB is also critically important on this issue. 2) Permanent Funding Mechanism for Infrastructure in Tijuana River Valley The City also supports the development and implementation of a permanent funding mechanism for infrastructure in the Tijuana River Valley—one that is not reliant on annual appropriations from Congress. Establishing a stable funding stream would provide longterm certainty for project planning and management, and help ensure that the region’s critical infrastructure does not once again fall into disrepair.

Currently, the operation and maintenance of the International Boundary Water Commission (IBWC) owned South Bay International Wastewater Treatment Plant is entirely dependent on annual and variable congressional appropriations and/or supplemental funding, such as that provided through the United States-Mexico-Canada Agreement Implementation Act of 2020 and the American Relief Act, 2025. The plant is the United States’ primary defense against toxic transboundary sewage flows. It fell into Attachment 1
Item 8.e
City of Coronado Comment Letter – USTR-2025-0004
November 3, 2025

Page 4 ends

severe disrepair between 2015 and 2024, causing raw sewage in the Tijuana River to bypass the plant and enter the Ocean.

More importantly, Mexico must establish a permanent, viable funding stream to maintain infrastructure in Tijuana. There are many potential mechanisms that could be used, such as a revenue source tied to trade, but the most important aspect is simply the existence of a program with consistent funding support. Tijuana’s current method of relying on ratepayer funds has been inadequate and must be augmented with another approach.

Request for Hearing Participation
USTR’s request for comment also stated that USTR will convene a public hearing on November 17, 2025, at 10:00 a.m., in the Main Hearing Room at the U.S. International Trade Commission. Please consider these comments to be the City’s written notification of intent to participate, as well as the summary of the City’s proposed testimony. The City will have a representative present at the hearing and ready to provide testimony.

Conclusion
Thank you, once again, for the opportunity to provide input regarding the operation of and compliance with the USMCA. I am copying EPA Administrator Lee Zeldin and IBWC Commissioner Chad McIntosh on this correspondence. EPA and IBWC have been incredible partners and leaders on the sewage issue. The City is very grateful for their efforts. The City is very pleased with the progress that is being made, and that the federal government is taking seriously the threat that this crisis poses to our community, our Navy Seals, our economy, our border patrol agents, and our pristine coastline.

The City of Coronado stands ready and willing to assist any effort to resolve the Tijuana River sewage crisis once and for all. Should you have any questions, please feel free to contact our City Manager, Tina Friend, at [email protected], or (619) 522-7335.

Sincerely,
John Duncan
Mayor
City of Coronado
Attachment 1
Item 8.e
City of Coronado Comment Letter – USTR-2025-0004
November 3, 2025

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Cc: City Manager
City Council
US EPA Administrator
IWBC Commissioner
White House Office of Intergovernmental Affairs
Bcc: Sen. Alex Padilla
Sen. Adam Schiff
Rep. Scott Peters

Attachment 1
Item 8.e

INTERNATIONAL BOUNDARY AND WATER COMMISSION

UNITED STATES AND MEXICO
4191 N. Mesa Street • El Paso, Texas 79902-1423
915.832.4100 • 1-800-262-8857 • https://www.ibwc.gov
For Immediate Release
December 19, 2025
USIBWC Successfully Completes Ozone Pilot Project in Tijuana River The U.S. Section of the International Boundary and Water Commission (USIBWC) has successfully completed a small pilot project that tested ozone nanobubble technology to kill bacteria and eliminate odors in Tijuana River sewage flows.

Working with contractor Green Water Solutions LLC of Ohio, USIBWC conducted the pilot project from September 9 to October 15, 2025, just downstream of the international boundary.

The project demonstrated that ozone nanobubble technology has the capability to kill bacteria and eliminate odors associated with sewage.

The project allowed USIBWC engineers to gain experience with the technology under actual Tijuana River conditions that included significantly fluctuating flows and non-homogeneous conditions due to the mixture of sewage effluent, trash, and silt.

While demonstrating the effectiveness of the technology, USIBWC learned that significant equipment design modifications would be required for an effective scale-up and larger application in the Tijuana River or other similar river systems that exhibit troublesome, unpredictable flow conditions.

The USIBWC will continue to investigate and evaluate technologies that can provide relief to U.S. citizens in the region. The USIBWC remains interested in potential funding and application partnerships that can demonstrate cost and operationally large-scale effectiveness. “The USIBWC continues to work toward implementing President Trump’s and U.S. EPA Administrator Zeldin’s commitment to achieving a 100 percent solution to the Tijuana River pollution crisis,” said USIBWC Commissioner Chad McIntosh. “I want to thank our engineers and Green Water Solutions for their work on this ozone nanobubble project.” USIBWC is an independent federal agency whose mission is to protect Americans from exposure to Mexican sewage, ensure fair allocations of water from the Colorado and Rio Grande Rivers, efficiently and effectively maintain and operate critical flood infrastructure, and reduce border flood hazards.

For more information:

Frank Fisher
Public Affairs Chief
[email protected]
(915) 494-6027
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Pilot Treatment Report
Prepared for the International Boundary and Water Commission (IBWC) Location: Tijuana River – U.S. Entry Point, San Diego, California Pilot Period: September 9 – October 14, 2025
Prepared by Greenwater Services
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Executive Summary
Greenwater Services (GWS) conducted a pilot project to evaluate the feasibility and effectiveness of its patented Nano Bubble Ozone Technology (NBOT) for reducing microbial contamination in the Tijuana River. Four (4) NBOT units were deployed with the intention of operating continuously; however, due to operational debris and river flow patterns, it was determined that limiting operation to daytime hours would be preferable.

Water Quality Results
NBOT produced significant reductions in total coliforms and E. coli despite the abbreviated operational period.
• Near-field downstream samples, ~5 yards (10 samples):
o 91.5% cumulative reduction in total coliforms
o 83.8% cumulative reduction in E. coli
• Far-field downstream samples, ~250 yards (4 samples):
o 82.4% cumulative reduction in total coliforms
o 89.3% cumulative reduction in E. coli
• Far-field upstream sample (~250 yards):
o 34.8% reduction in total coliforms
o 27.6% reduction in E. coli
Daily pre- and post-treatment sampling revealed pre-treatment concentrations ranging from 4.7 million to over 241 million Most Probable Numbers (MPN) for total coliforms, and from 1.3 million to over 29 million MPN for E. coli. Post-treatment concentrations were substantially lower, ranging from 300,000 to 14.1 million MPN for total coliforms and from 464,000 to 9.2 million MPN for E. coli. One pre-treatment and one post-treatment sample were considered outliers and were included in the full dataset.

Conclusion
NBOT demonstrated strong effectiveness in reducing contaminants and pathogens in the Tijuana River. While the pilot measured only total coliforms and E. coli, the technology’s oxidative process would be expected to address additional bacteria, pathogens, and viruses simultaneously, as well as improve air quality. Border Patrol Agents stationed in close proximity to the treatment site commented on a reduction of offensive odors during treatment. Full-scale implementation would require additional units to accommodate daily flow volumes, as well as an integrated filtration system for continuous 24/7 operation. With these enhancements, NBOT represents a viable solution for improving river water quality, facilitating beach reopenings, and enhancing public health and community conditions in the surrounding area.

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Project Background
Purpose of the Pilot
The primary purpose of this pilot was to evaluate whether Greenwater Services’ Nano Bubble Ozone Technology (NBOT) could safely and effectively reduce pathogen loads in the Tijuana River. By demonstrating measurable reductions in microbial contamination, the pilot sought to support broader regional goals related to:
• Environmental health
• Public safety
• Beach reopening efforts
• Long-term ecological restoration
• Reduction of offensive odors
Context and Need
The Tijuana River has long faced severe water quality challenges as it reenters the United States.

Chronic cross-border flows carry untreated or partially treated wastewater, stormwater runoff, industrial discharge, and high concentrations of pathogens—including total coliforms and E. coli—into the river channel. These flows exceed public health standards and contribute to coastal pollution, beach closures, poor air quality, and degraded estuarine habitat.

Compounding these issues, episodic releases and tidal movements cause highly variable flow conditions that spread contamination downstream, affecting residential communities, recreational areas, and environmentally sensitive zones. Persistent odors, elevated bacteria levels, and ecological stress have created significant public health, environmental, and economic impacts.

In response to these longstanding challenges, the pilot was designed to assess NBOT as a potential treatment option capable of reducing pathogens directly within the moving water system. A successful demonstration could help design future strategies for improving water quality, mitigating public health risks, and supporting regional efforts to reopen beaches and restore coastal ecosystems.

Technology Overview
Greenwater Services (“GWS”) provides algae prevention, mitigation, and remediation services using a patented technology known as NBOT or Nano Bubble Ozone Technology. NBOT technology has been tested and validated by research institutions and government agencies, including the National Oceanic & Atmospheric Administration (“NOAA”), U.S. Army Corps of Engineers, Ohio EPA, The Ohio State University, and The University of Florida. NBOT has consistently proven to be a safe and effective solution for reducing the impact of harmful algal blooms (HABs) and their toxic by-products both in freshwater and saltwater. No harmful side Attachment 2
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effects to marine life or to the environment have been observed (i.e., no chemical residues, exempted from FIFRA algaecide requirements). NBOT is a true “GREEN” technology. The byproduct of NBOT is an increased level of dissolved oxygen, which improves overall water quality and restores the depleted oxygen levels.

More specifically, the NBOT system uses a patented gas-infused nanobubble generator to inject ozone (O3) impregnated nanobubbles into the water. Research conducted at Ohio State University has demonstrated that NBOT generates roughly 256 million nanobubbles per milliliter of water. The nanobubbles do NOT rise to the surface and burst. Instead, the nanobubbles diffuse naturally throughout the entire water column like a gas, slowly introducing ozone into the water like a time-released vitamin. Ozone is a very strong chemical oxidant; however, dissolved ozone averages only a 20-minute ½ life in water, which limits its effectiveness for water treatment. By contrast, ozone inside a nanobubble can persist for days, which is the secret to NBOTs effectiveness.

The implosion of an ozonated nanobubble creates a powerful physical and chemical reaction.

Heat and energy generated by the nanobubble instantly react with the ozone and water molecules to create three (3) powerful oxidizing agents - hydroxyl radicals, peroxides and molecular oxygen. These reactive oxidants will effectively denature or destroy compounds by “shredding” the organic molecules of their functional groups (carboxylic acids, amines, sulfides, phosphates, etc.). The NBOT technology is proven to not only inactivate harmful cyanobacteria and other microbes but is effective at destroying toxins and organic contaminants throughout the water column by eliminating or significantly reducing their functionalized molecules. The oxidizing agents quickly decompose into oxygen leaving behind more highly oxygenated water.

The following treatment results and observations have been consistent across all NBOT project locations and have been corroborated by NOAA, The Ohio State University, and the University of Florida:

1. Harmful cyanobacteria and bacteria are significantly reduced, depending on how exhaustive operations are conducted, which is fully controllable.

2. Chemical contaminants, biomolecules, and toxins are reduced. To date, NBOT has been able to degrade all natural toxins that have been evaluated (including microcystins, anabaenopeptins, and anatoxins).

3. Nutrients (Nitrogen, Phosphorus, Carbon) have been significantly reduced or transformed from the water column. Nitrogen can be converted via oxidation to a few volatile species in addition to being scavenged by oxidized metals. Phosphorus in the water column is significantly reduced as well.

4. Water clarity (apart from “silty” water) is greatly improved as pigments of all types are rapidly destroyed via ozone, radicals, and peroxides.

5. Nanobubbles do exist for extended periods of time. The slow and constant release of ozone/oxygen into the water results in extended treatment time and ongoing protection.

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6. Oxygen content in the water column has increased.

7. Odor compounds will be destroyed as sulfides, amines, etc., will be oxidized under NBOT conditions.

8. No harmful impacts to wildlife. Marine life and waterfowl activity noticeably increase at each treatment location due in part to increased levels of dissolved oxygen.

Additionally, an important observation has been validated in laboratory testing as it relates to water quality and survivability of non-target species (i.e., “good” organisms) and impacts to human cell lines. The Ohio State University observed higher levels of diatoms, beneficial green algae, and zooplankton in post-treatment water, which suggests that harmful cyanobacteria and bacteria concentrations are reduced, and beneficial organisms can once again proliferate and restore the natural ecosystem. Youngstown State University found a significant increase in the survivability rates of human skin, liver, and lung cells in post-treatment water as compared to pre-treatment water.

Greenwater Services has been implementing NBOT technology for six (6) years in canals, lakes, ponds, and rivers. The NBOT units are easily portable and may be deployed either on land or water. The NBOT units can run unattended 24/7 and only require a 220 / 240 power source.

Limited to no site preparation is required in most cases. There are no additives or consumables, and no site cleanup is needed (i.e., no disposables or residues left behind). NBOT creates oxygen and ozone onsite, so no canisters of O2 or O3 are required on site.

If required, signage may be applied at the treatment site to alert the public. If required, GWS will coordinate water sampling and laboratory testing to monitor pre-, during, and post-treatment water quality parameters (e.g., algae, bacteria, and toxin levels). All data would be shared with the appropriate state and local agencies.

Pilot Details
The pilot began on September 9, 2025, with four NBOT units deployed at the flood control plain west of the border with Mexico. (See Appendix A, Location Maps and photos 1–4.) The units remained operational until September 17, 2025, when they were temporarily removed due to concerns over potential flooding. Upon advanced notification of potential flooding from the IBWC, all units and supporting equipment were removed from the site within hours. Following a reduction in risk, the units were reinstalled on September 25, 2025, and treatment operations resumed.

Throughout the pilot, no adverse effects were reported, and U.S. Customs and Border Protection (CBP) personnel noted a substantial reduction in odors in the treatment area during NBOT operation.

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Operational Challenges
During the initial days of the pilot, substantial volumes of trash traveling downstream— particularly during evening and overnight periods of higher flow due to the release of contaminated water from Mexico—caused frequent clogging of the NBOT unit inputs and output nozzles. (See Appendix A, Photos 5–6.) Various forms of trash, including plastic bags, small plastic fragments, and pieces of metal, repeatedly obstructed the units, making overnight operation impractical. As a result, GWS adjusted the operational plan and ran the units only during daytime hours, when river flow was lower, and clogging risk was reduced. This operational window allowed GWS to evaluate treatment performance under more stable conditions.

Adjustments for Trash Boom Installation
On October 9, 2025, at the request of the International Boundary and Water Commission (IBWC), GWS paused operations to allow for the installation of a trash boom at the site. (See Appendix A, Photos 7–8.) Two NBOT units were relocated to accommodate the boom’s placement. NBOT operations resumed on October 14, 2025. Although rain was forecast that evening, precipitation levels were expected to be light (0.25–0.50 inches), and treatment commenced as requested. Mid-morning, a call from the IBWC that pumps were down in Mexico, causing an increased flow, led to an early shutdown, with plans to resume treatment the following day.

Flooding Event and System Damage
On September 17, 2025, the IBWC advised evacuation of the site during a 0.5-inch rain event.

During that incident, the river level never rose to the elevation of the treatment units. Based on that experience, when another 0.5-inch rain event was forecast for October 14, 2025, it was determined that fully evacuating the units would not be necessary. At approximately 8:30 p.m. on October 14, GWS personnel returned to the site and observed rising water levels. The units were promptly repositioned to a higher elevation within the treatment area to maintain operational safety and ensure continued protection.

However, between 10:00 p.m. and 3:00 a.m. that night, an unexpected flooding event occurred.

The following morning, the site was found to have been overtaken by floodwater, which carried large quantities of trash and debris that inundated and damaged the NBOT units and auxiliary equipment, including generators and fuel cells (see Appendix A, Photos 9–10). River flow data confirmed that water volume increased dramatically and unexpectedly. Flows surged from approximately 40 million cubic meters per second (m³/s) to 247 million m³/s, resulting in a significant water level rise (See Appendix B, River Flow Charts.) Due to safety concerns and site conditions, the location was deemed unusable for the remainder of the pilot, and the project was halted.

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Site Remediation
GWS coordinated with Sunbelt Rentals and contracted EFR Environmental Services, an environmental remediation company, to safely clear hazards and contaminants from the site. All hazards, including a minor 5-gallon diesel spill, were remediated. Remediation activities were completed on October 22, 2025.

Results and Findings
The NBOT pilot on the Tijuana River produced measurable and meaningful reductions in microbial contamination despite operational constraints, limited treatment windows, and the premature conclusion of the project due to flooding. Water quality results consistently demonstrated that NBOT is capable of significantly reducing total coliform and E. coli concentrations under real-world river conditions and increasing dissolved oxygen levels at the treatment site.

Pathogen Reduction Performance
Water samples collected throughout the pilot (See Appendix A, Photos 11–12) showed substantial reductions in bacteria during periods of NBOT operation:
• Near-field downstream sampling ~5 yards (10 samples):
o 91.5% cumulative reduction in total coliforms
o 83.8% cumulative reduction in E. coli
• Far-field downstream sampling at ~250 yards (4 samples):
o 82.4% cumulative reduction in total coliforms
o 89.3% cumulative reduction in E. coli
• Far-field upstream sampling at ~250 yards (1 sample):
o 34.8% reduction in total coliforms
o 27.6% reduction in E. coli
These results confirm that NBOT effectively reduces microbial contamination both immediately downstream of the treatment zone and at a distance.

Daily Pre- and Post-Treatment Sampling
Morning pre-treatment samples and afternoon post-treatment samples (See Appendix C, Testing Data & Graphs) further demonstrated NBOT’s ability to consistently lower bacterial loads:
• Pre-treatment total coliforms ranged from:

4.7 million to >241 million MPN
• Post-treatment total coliforms ranged from:
300,000 to 14.1 million MPN
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• Pre-treatment E. coli ranged from:

1.35 million to 29.09 million MPN
• Post-treatment E. coli ranged from:
464,000 to 9.2 million MPN
One pre-treatment and one post-treatment value fell outside expected ranges but were retained in the analysis for transparency. All other values demonstrated the expected clear downward trends during NBOT operation. Environmental Laboratory Network (ELN) personnel also collected samples, corroborating samples taken by GWS personnel.

Observational Findings
In addition to laboratory-verified reductions in pathogens, several qualitative observations further supported the effectiveness and safety of NBOT:
• Odor Reduction:

CBP personnel consistently reported a noticeable decrease in odor within the treatment zone during NBOT operation, indicating oxidation of odor-causing compounds such as sulfides and amines.
• No Adverse Impacts Reported:

No negative environmental or public health effects were observed or reported during the pilot.

Impact of Operational Constraints
Several operational limitations affected pilot duration and treatment consistency:
• Trash and debris clogged NBOT inputs and output nozzles during nighttime periods of higher flow, restricting operations to daytime hours.
• Scheduled installation of the trash boom resulted in a temporary treatment pause. • A significant flooding event on October 14, 2025, abruptly halted operations, damaged equipment, and rendered the site unusable for the remainder of the pilot.

Despite these challenges—and a total operational window far shorter than originally planned— NBOT consistently produced a very high percentage of pathogen reductions as shown in Appendix C.

Overall Findings
The cumulative data from the pilot demonstrates that:
• NBOT effectively reduces total coliform and E. coli concentrations in moving river water.
• Pathogen reductions were observed across varying distances downstream of the treatment area.

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• Operational performance remained strong even with intermittent runtimes caused by river debris and flow variability.
• Observed odor reduction and lack of adverse impacts further support NBOT’s environmental compatibility and safety.

These findings strongly support NBOT as an effective microbial treatment option for the Tijuana River and warrant further evaluation under longer, continuous operational conditions.

Conclusion
The NBOT pilot on the Tijuana River demonstrated that Nano Bubble Ozone Technology is a safe and effective method for reducing microbial contamination in a complex and unpredictable river system. Despite substantial operational challenges, including debris-related clogging, limited treatment windows, site access limitations, and an unexpected flooding event, the pilot consistently produced significant reductions in both total coliforms and E. coli levels. These reductions occurred even within a shortened operational timeline, highlighting NBOT’s strong treatment capacity under constrained conditions.

In addition to measurable pathogen reductions, qualitative observations further supported NBOT’s effectiveness. CBP personnel reported a noticeable decline in odors within the treatment zone during NBOT operation, and no adverse environmental or public health impacts were observed at any stage of the pilot.

While the pilot ended prematurely due to flooding, the results achieved during the available treatment windows confirm that NBOT has substantial potential as a tool for improving water and air quality in the Tijuana River.

Recommendations
Based on the results observed during this pilot, the following recommendations are provided to support future assessment and potential scale-up of NBOT treatment in the Tijuana River:

1. Expand Operational Capacity
A sufficient number of NBOT units should be deployed to match the river’s variable flow volumes and to increase the overall treatment capacity. Scaling up system deployment and integrating a debris filtering strategy would enable more consistent pathogen reduction and improve the effectiveness of the treatment’s operational results.

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2. Integrate NBOT Into Future Water-Quality Strategies
Given the demonstrated reductions in key pathogens, NBOT should be considered as part of a broader, multi-agency strategy for improving Tijuana River water and air quality, supporting beach reopening efforts, and protecting public health. Collaboration with regional, state, and federal partners will facilitate data sharing, regulatory alignment, and long-term planning.

NBOT’s ability to reduce nutrients should also be harnessed to reduce downstream algal and bacterial growth.

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Appendix A: Treatment Photographs
Treatment Location Map
Flood Control Plain
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Site Photographs
Photo 1
Photo 2
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Active Treatment (showing oxidized results)
Photo 3:

Photo 4
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Trash Challenges: Daily trash removals following debris-filled discharges from Mexico
Photo 5
Photo 6
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Trash Boom Installation
Photo 7
Photo 8
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Flooding Aftermath
Photo 9
Photo 10
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Sampling Photographs
Photo 11: Sample collection technique
Photo 12: Before and After Treatment Samples
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Appendix B: River Flow Charts
River Flow Data for the October 14th Flood

September 17th .5” rain event October 14th .5” rain event October 14th river flow
10:00 AM – 3:00 PM
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Appendix C: Testing Data and Graphs
Percentage Reduction of total coliforms (TC) and E. coli (EC) Sample number % TC Red % EC Red
1 98.49% 99.99%
2 78.39% 11.99%
3 90.00% 92.57%
4 97.47% 90.00%
5 97.74% 93.18%
6 81.32% 81.28%
7 80.56% 83.21%
8 88.07% 92.79%
9 17.77% 18.07%
10 95.27% 95.71%
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Percentage Reduction of TC & EC Downstream
Sample number % TC Red % EC Red
1 87.49% 83.21%
2 84.14% 95.12%
3 -19.96% -1.78%
4 87.45% 91.75%
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The graphs below show the daily pre and post-sample Most Probable Number (MPN) as reported by Environmental Lab Network. Outlier data is included.

Pre and Post MPN TC & EC East of the Nozzle
Sample date TC EN Pre TC EN Post
1 19863000 300000
2 111990000 24196000
3 81640000 8164000
4 241960000 6131000
5 241960000 5475000
6 32,820,000 6131000
7 72700000 14136000
8 36540000 4360000
9 4710000 3873000
10 29090000 1376000
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Pre and Post MPN TC and EC East of Treatment
Sample date EC ET Pre EC ET Post
1 11,450,000 1,203,000
2 14,500,000 708,000
3 1,350,000 1,374,000
4 14,550,000 1,201,000
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City of Coronado | Mayor & City Council | 619-522-7320
1825 Strand Way, Coronado, California, 92118
March 27, 2026
Members of the City Council, Ms. Friend, and Ms. Canlas:

Pursuant to the City Council Policy #2, we are requesting that an item be placed the soonest available City Council agenda for discussion and possible action regarding a resolution opposing any offshore oil and gas leasing, exploration, or development activities offshore of the Coronado coastline and the California Coast.

Sincerely,
Kelly Purvis Amy Steward
Councilmember Councilmember
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2 6. Oppose onshore support facilities within city limits. Declare that Coronado opposes any new or expanded onshore infrastructure (pipelines, storage, processing, or marine terminals) in or through the City that would support offshore oil and gas development.

Thank you for your consideration.

Respectfully,
Emerald Keepers
Item 8f.

April 7, 2026
Item 8.f
1 Kelsea Holian
From: Jennifer Olson
Sent: Tuesday, April 7, 2026 10:36 AM
To: John Duncan; Carrie Anne Downey; Mark Fleming; Kelly Purvis; Amy Steward; CM Tina Friend
Cc: City Clerk's Office
Subject: Resolution opposing any additional offshore oil and gas leasing, exploration, or development activities offshore Coronado
CAUTION: This email is from an EXTERNAL source. Ensure you trust this sender before clicking on any links or aƩachments.

Mr. Mayor, Council Members, and Ms Friend:

As a resident of Coronado, I am wriƟng to urge the City to adopt a resoluƟon opposing any addiƟonal offshore oil and gas leasing, exploraƟon, or development along the Coronado and California coastlines.

Offshore oil drilling carries significant and well-documented environmental risks. The U.S. Department of the Interior's Bureau of Ocean Energy Management (BOEM) outlines these impacts in detail at boem.gov. The threats to marine ecosystems, water quality, and coastal communiƟes are not speculaƟve. They are established consequences of offshore extracƟon.

Proponents of expanded drilling oŌen cite energy security and consumer benefits as jusƟficaƟon. However, the oil industry already holds a substanƟal number of unused leases in the Gulf of Mexico, in close proximity to exisƟng refinery infrastructure, as documented in BOEM's current leasing status reports (updated through April 2026): boem.gov/oil-gasenergy/leasing/combined-leasing-status-report. AddiƟonal California leases are unnecessary when exisƟng capacity goes untapped.

Furthermore, any claim that expanded drilling would meaningfully lower prices for American consumers is undermined by the realiƟes of a complex global petroleum market. As the U.S. Energy InformaƟon AdministraƟon explains, crude oil and petroleum products are traded internaƟonally, meaning domesƟc producƟon does not translate directly into domesƟc price relief: eia.gov/energyexplained/oil-and-petroleum-products/imports-and-exports.php. Californians would bear all of the environmental and economic risk while capturing liƩle to none of the benefit.

The consequences of an oil spill affecƟng Coronado's beaches would be catastrophic, and would threaten our tourism economy, marine wildlife, and the quality of life that defines this community.

I respecƞully urge the City Council to stand with its residents and adopt a resoluƟon opposing offshore oil and gas development off the California coast.

Kind regards,
Jennifer Olson
Item 8f.

April 7, 2026
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Item 8.f

Coronado City CouncilApril 7, 2026

Coronado City Council
April 7, 2026