SO-1860 Hill Center EV Charger Electrical Infrastructure Upgrades Addendum 1.pdf

PRE-BID ADDENDUM NO. 1

TO SPECIFICATION 28172.00

OWNER: Lansing Public School District

519 West Kalamazoo Street

Lansing, Michigan 48911

PROJECT: Electric Vehicle Charger and Battery Storage Integration with Hill Center Resiliency Project #SO-1860

CONTRACT FOR: Construction

ENGINEER: CTC Engineering, LLC

3915 Research Park Dr., Ste. A-8

Ann Arbor, Michigan 48108

INTENT: The following is intended to be a clarification to the Contract Documents based upon the questions offered as a result of the Pre-Bid Walk Through on May 20, 2026.

DRAWINGS: The submittals for the EV Chargers are attached herewith for reference only.

The following drawings accompany this Addendum:

• Sheet 28172.00, E-2

• Sheet 28172.00, E-2.1

• Sheet 28172.00, E-5

PROJECT MANUAL: -No sections are reissued with this Addendum-

CLARIFICATIONS:

A. Note that the bid proposals can be hand delivered, or mailed, and must be received no later than 2:00 pm, June 4, 2026 at: Lansing School District, Attn: Purchasing/Sealed Bid SO-

1860, 519 W. Kalamazoo St, Lansing, Michigan 48933.

B. Attached is the bidders list of those Contractors that attended the pre-bid walk through held on May 20, 2026.

C. The following questions and associated clarifications are made part of and binding to the

Contract documents:

1. Are the EV chargers part of this Contract?

Response: The acquisition of the EV chargers is not under this Contract, as they have already been purchased by the Owner. The installation of the chargers is under this

Contract and shall be assigned to the Contractor at the site.

2. Will there be for construction drawing issued for bidding or are we to bid from the drawings labeled “preliminary – Not to be used for construction”?

Response: You are to bid from the documents issued as part of this package. The “For

Construction” documents will be issued at the time of award.

3. Will yellow Ideal plastic bollard protection sleeves be allowed in lieu of painting the bollards?

Response: Yes.

4. Where are TR-1 and Panel GA-1 located?

Response: Sheet E-2 shows the overall equipment locations. Please see Sheet 28172.00

E-2.1 for more specific locations.

5. Please provide specs or a submittal of the owner provided bus EV chargers.

Response: Please see the attached submittals for the EV Chargers.

6. Who is responsible for final installation and startup of the Bus EV chargers?

Response: The final installation is under this Contract but the startup will be performed by others.

7. Do the EV chargers require a data connection?

Response: Yes.

8. Is the fencing included in this project? The civil drawings show it as by others, but the electrical drawings have details on how to install it. Are there further details on the fencing? Fabric type? Post thickness? Gate dimensions?

Response: The fencing is part of this project in its entirety. In the Project Manual, please see section #32 3100, for the specific specifications for the fencing and operators.

9. Who is responsible for the gate operator? If contractor, please provide specs on it.

Response: In the Project Manual, please see section #32 3100.

10. Will the gate operators require a traffic loop for exit?

Response: In the Project Manual, please see section #32 3100, page 3.

11. What will open the gate operators?

Response: In the Project Manual, please see section #32 3100, page 3.

12. Will there be civil specs provided for this project? The only specs are electrical.

Response: Civil specifications are provided on the civil sheets.

13. Is civil testing part of this project? Who is responsible for paying the cost of civil testing?

Response: Civil testing is by a third party, obtained and paid for by the Owner.

14. What is expected for pavement markings or are these by others?

Response: Pavement markings are under this contract and shall conform to MDOT specifications.

15. Please provide a base detail for the bus EV chargers.

Response: The base detail is shown in the submittals herewith. The base plate of the charger is to be bolted in place direct to the concrete.

16. Please provide a more detailed/larger plan for the bus charger arrangement showing the bollard spacing and bus EV charger layout

17. Response: Please see Sheet 28172, E-2.1 for an enlarged view of this area.

18. Please clarify how the tap in the existing switch is to be made and where this equipment is on the plans. Can plans be provided indicating what and where each piece of equipment is?

Response: These have been provided and are attached.

19. How long do you anticipate the Note #3 (sheet E-1) to be? It appears the tap length may dictate overcurrent protection is needed for the tap conductors prior to reaching the location shown for the 600A ATS.

Response: The is using the tap rule as indicated in Section 240.21 (B)(5) of the National

Electrical Code. The over-current protection in the ATS would be the required device as identified in Section 240.21 (B)(5)(3).

20. The drawings indicate the solar array will not operate during a utility outage, however it appears if you are back feeding the school switchboard from the buses/BESS then the array will in fact see power at the tap and start pushing power back to the system. No electronics are indicated to be added to the existing solar switch to accept a signal from the SEL-751 to open it if there is a utility loss and the buses/BESS are sent to a back feed scenario.

Response: The control of the solar array invertors, automatic transfer switches, EV chargers and the future BESS is not under this Contract. The control conductors and the termination thereof are however, under this Contract. The point-to-point terminations will be issued after all submittals have been made.

21. Can you indicate where on the drawings the “Existing switch” below (left side) is located that the 600 Amp tap will be made?

a. Does this tap need overcurrent protection?

Response: Please see response to [22] below.

22. Can the 600 Amp tap be completed anywhere in the existing main switchboard sections?

Does this tap need to be designed by Eaton or be UL field listed?

Response: It is anticipated that the tap at the existing switch would be made at the load side of the switch with additional lugs with respect to the existing switch feeding the existing solar panels. With respect to the existing indoor distribution panel, it is anticipated that a direct connection can be made to the low voltage bus, and then by the tap rule, fed to the ATS.

23. Please clarify what is wanted for mesh reinforcement in the heavy duty concrete? We assume this means W6x6 W2.9 but are unclear on what the SV stands for.

Response: The SV notation stands for

“smooth wire with deformed wire”, with the

W2.9 referring to the wire size.

- END OF PRE-BID ADDENDEM #1 -

Gateway International 360 • P.O. Box 518, Bear DE 19701 • 302.250.4990 • GatewayIntl360.com SPEC-SHEETS_REV-040326

EV CHARGER CONTROL &

MANAGEMENT SOLUTIONS

AC, Level 2 and DC, Level 3 EV chargers

Gateway International 360 • P.O. Box 518, Bear DE 19701 • 302.250.4990 • GatewayIntl360.com

LEVEL 2 AC – NETWORK PLANS

MODEL DESCRIPTION

IEV-SWN12-L2-EXP

Express Network Plan – 1 year Level 2 OCPP charger networking with access control, user management., usage fees and revenue collection.

IEV-SWN36-L2-EXP

Express Network Plan – 3 year Level 2 OCPP charger networking with access control, user management., usage fees and revenue collection.

IEV-SW602-L2-EXP

Express Network Plan – 5 year Level 2 OCPP charger networking with access control, user management., usage fees and revenue collection.

4G DATA PLANS

MODEL DESCRIPTION

IEV-4GDP12 1 year – 4G data plan add-on, includes SIM card and ongoing cellular data for a single EV charger

IEV-4GDP36 3 year – 4G data plan add-on, includes SIM card and ongoing cellular data for a single EV charger

IEV-4GDP60 5 year –4G data plan add-on, includes SIM card and ongoing cellular data for a single EV charger

LEVEL 3 DC – NETWORK PLANS

MODEL DESCRIPTION

IEV-SWN12-DC-EXP

Express Network Plan – 1 year Level 3 OCPP charger networking with access control, user management., usage fees and revenue collection.

IEV-SWN36-DC-EXP

Express Network Plan – 3 year Level 3 OCPP charger networking with access control, user management., usage fees and revenue collection.

IEV-SWN60-DC-EXP

Express Network Plan – 5 year Level 3 OCPP charger networking with access control, user management., usage fees and revenue collection.

EXPRESS NETWORK PLAN –

1, 3 & 5 YEAR OPTIONS

Level 2 & 3 OCPP charger networking with access control, user management, usage fees and revenue collection.

QUICKCHARGE

GWI-EVCMS-REV-04.26.24

AVAILABLE FOR AC & DC SOLUTIONS

Gateway International 360 • P.O. Box 518, Bear DE 19701 • 302.250.4990 • GatewayIntl360.com GWI-LINECARD_REV-021826

Line Card AC, Level 2, EV chargers, pedestals and accessories

LEVEL 2 – BASIC SERIES

MODEL DESCRIPTION

GW-EV75-APP EVC Level 2, 48 Amp, Ethernet and WiFi, J1772 18ft Cable; RFID

PEDESTALS – (GW-EV75-APP ONLY)

GW-EVP-S-1 Pedestal for Single charger, Level 2, AC

GW-EVP-D-1 Pedestal for Dual, Back-to-back chargers, Level 2, AC

GW-EVP-S-CM-1 Pedestal with Cable Management for Single charger Level 2, AC

GW-EVP-D-CM-1 Pedestal with Cable Management Pedestal for Dual, Back-to-back chargers, Level 2, AC

MODEL DESCRIPTION

GW-EV75-ISO EVC Level 2, 48 Amp, Connectivity: Ethernet, WiFi & 4G, J1772 18ft Cable; C-tep compliant, OCPP2.0.1, ISO15118 & RFID

PEDESTALS – (GW-EV75-ISO ONLY)

GW-EVP-SR Pedestal for Single charger, Level 2, AC

GW-EVP-SR-CM Pedestal for Single charger with Cable Management, Level 2, AC

GW-EV75-ISO

GW-EV500 & 550-ISO

GW-EV75-APP

LEVEL 2 – COMMERCIAL SERIES

MODEL DESCRIPTION

GW-EV500-W-ISO

GW-EV500-C-ISO

EVC Level 2, 48/32/16Amp ; Connectivity: Ethernet, WiFi, 4G & RFID; OCPP1.6J & 2.0.1 compliant,

4.3 LCD display, J1772 18ft Cable, C-tep compliant with ISO 15118

GW-EV550-W-ISO

GW-EV550-C-ISO

EVC Level 2, 80/48/32Amp ; Connectivity: Ethernet, WiFi, 4G & RFID; OCPP1.6J & 2.0.1 compliant,

4.3 LCD display, J1772 18ft Cable, C-tep compliant with ISO 15118

GW-EV600-W-ISO

GW-EV600-C-ISO

EVC Level 2, 48/32/16 amp, Single Charger w/ Dual Guns; Ethernet, 4G, RFID, OCPP, 7” LCD display, ISO 15118; Dual J1772 18ft Cable

PEDESTALS – COMMERCIAL SERIES

GW-EVP-S-1 Pedestal for Single charger, Level 2, AC

GW-EVP-D-1 Pedestal for Dual, Back-to-back chargers, Level 2, AC

GW-EVP-S-CM-1 Pedestal with Cable Management for Single charger Level 2, AC

GW-EVP-D-CM-1 Pedestal with Cable Management Pedestal for Dual, Back-to-back chargers, Level 2, AC

GW-EV600-ISOGW-EVP-S-1 GW-EVP-S-CM-1 GW-EVP-D-CM-1 GW-EVP-D-CM-1 / GW-EVP-S2S-MBGW-EVP-D-1 GW-EVP-D-1 / GW-EVP-S2S-MB

Gateway International 360 • P.O. Box 518, Bear DE 19701 • 302.250.4990 • GatewayIntl360.com GWI-LINECARD_REV-021826

ADDERS

MODEL DESCRIPTION

HOOK HOOK for Standard EV Charger

RFID Espen RFID for EV Charger

Cable - J1772 18ft- for 48A charger SAE J1772 50Amp 18ft cable for 48A Charger

Cable - J1772 25ft - for 48A charger SAE J1772 50Amp 25ft cable for 48A Charger

Cable - J1772 18ft - for 80A charger SAE J1772 80Amp 18ft cable for 80A Charger

Cable - J1772 25ft - for 80A charger SAE J1772 80Amp 25ft cable for 80A Charger

GW-EVP-S2S-MB Side By Side Mounting Bracket

AC, Level 2, EV chargers, pedestals and accessories

CONTROL & MANAGEMENT SOFTWARE

IEV-SWN12-L2-STD 1 year – Standard network plan, Level 2

IEV-SWN36-L2-STD 3 year – Standard network plan, Level 2

IEV-SW602-L2-STD 5 year – Standard network plan, Level 2

GW-EV75-ISO

GW-EV500 & 550-ISO

GW-EV75-APP

GW-EV600-ISOGW-EVP-S-1 GW-EVP-S-CM-1 GW-EVP-D-CM-1 GW-EVP-D-CM-1 / GW-EVP-S2S-MBGW-EVP-D-1 GW-EVP-D-1 / GW-EVP-S2S-MB

Gateway International 360 • P.O. Box 518, Bear DE 19701 • 302.250.4990 • GatewayIntl360.com GWI-LINECARD_REV-021826

GW-EV4040

GW-EV4400-60

GW-EVCM

GW-EV4400-120&180

DC Level 3, EV chargers, pedestals and accessories

LEVEL 3 – GW-EV4040

MODEL DESCRIPTION

GW-EV4040-40-W EVC Level 3 DCFC 40kW Wall or Pedestal Mount, Dual Guns, 2 ports of 200A, CCS1 & NACS, Ethernet and 4G, RFID, OCPP, with 25ft Cable. GrayGW-EV4040-40-P

GW-EV4040-60-W EVC Level 3 DCFC 60kW Wall or Pedestal Mount, Dual Guns, 2 ports of 200A, CCS1 & NACS, Ethernet and 4G, RFID, OCPP, with 25ft Cable. GrayGW-EV4040-60-P

MOUNTING OPTIONS

GW-EV4040-PCM-BA Pedestal with Cable Management for Pedestal-Mount DCFC 40kW & 60kW; BABA-Compliant

LEVEL 3 – GW-EV4400-60

MODEL DESCRIPTION

GW-EV-4400-60-SS15-ISO EVC Level 3 DCFC 60kW, 7” Display; Dual Gun, 2 ports of 125A CCS1,15ft or 23ft Cable options (White). Ethernet+WiFi+4G, ISO15118, OCPP, DC MetersGW-EV-4400-60-SS23-ISO

CABLE MANAGEMENT

GW-EVCM15-DC1 Cable Management for 15ft cable Level 3 DC Charger 60kW

GW-EVCM23-DC1 Cable Management for 23ft cable Level 3 DC Charger 60kW

LEVEL 3 – GW-EV4400-120 & 180

MODEL DESCRIPTION

GW-EV-4400-120-SS15-ISO EVC Level 3 DCFC 120kW, 7” Display; Dual Gun, 2 ports of 125A CCS1,15ft or 23ft Cable options (White). Ethernet+WiFi+4G, ISO15118, OCPP, DC MetersGW-EV-4400-120-SS23-ISO

GW-EV-4400-180-SS15-ISO EVC Level 3 DCFC 180kW, 7” Display, Dual Gun, 2 ports of 300A CCS1, 15ft or 23ft Cable options (White); Ethernet +WiFi + 4G, ISO15118, DC Meters/Boost Mode/CTEP CompliantGW-EV-4400-180-SS23-ISO

CABLE MANAGEMENT

GW-EVCM15-DC2 Cable Management for 15ft cable Level 3 DC Charger 120/180kW

GW-EVCM23-DC2 Cable Management for 23ft cable Level 3 DC Charger 120/180kW

Gateway International 360 • P.O. Box 518, Bear DE 19701 • 302.250.4990 • GatewayIntl360.com GWI-LINECARD_REV-021826

GW-EV4500-240-TS-ISOGW-EV4500-160-TS-ISO

DC Level 3, EV chargers, pedestals and accessories

LEVEL 3 – POWER CABINET & DISPENSER SOLUTION

MODEL DESCRIPTION

GW-EV4600-360-PC EVC Level 3 DCFC 360kW Main Power Cabinet

GW-EV4600-480-PC EVC Level 3 DCFC 480kW Main Power Cabinet

ADD ON: DISPENSER

GW-EV4600-360/480-DP-ISO

EVC DCFC Dispenser for 360kW/480kW Power Cabinet - 21.5” Display 2 ports of 350A Natural Cooled CCS1 15ft Cables, DC Meters LAN+WiFi+4G, Boost Mode, ISO15118, Energy Star, ETL, RFID Cards Included (White)

ADD ON: CABLE MANAGEMENT

GW-EV-CM-360/480 Cable Management with 15ft cables

LEVEL 3 – 160 & 240 TOUCHSCREEN

MODEL DESCRIPTION

GW-EV4500-160-TS-ISO

EVC Level 3 DCFC 160kW, 15” Touchscreen Display, Dual Gun, 2 ports of 350A CCS1,15ft Cable with Swing Bar Cable Management System (White); Ethernet +Wi-Fi + 4G, ISO15118, CTEP Compliant

GW-EV4500-240-TS-ISO

EVC Level 3 DCFC 240kW, 21.5" Touchscreen Display, Dual Gun, 2 ports of 375A CCS1,15ft Cable with Swing Bar Cable Management System (White); Ethernet +Wi-Fi + 4G, ISO15118, DC Meters/Boost Mode/CTEP Compliant

CONTROL & MANAGEMENT SOFTWARE

IEV-SWN12-L3-STD 1 year – Standard network plan, Level 3

IEV-SWN36-L3-STD 3 year – Standard network plan, Level 3

IEV-SW602-L3-STD 5 year – Standard network plan, Level 3

GW-EV4600-360/480-PCGW-EV4600-360/480-DP-ISO

Service Disabled Veteran Owned Small business featuring a full line of AC & DC, Level 2 & 3, EV charging solutions and lighting controls.

Product focus:

• AC & DC Level 2 & 3 EV charging solutions

• Standard, long-life and smart lighting controls

Certifications:

• SAM Certified #8XTC8

• SDVOSB 100% Disabled Veteran Manufacturer

• GSA (Contract # GS-30F0008Y), BMS, SBA

• NASPO – National Association of State Procurement Officials

• EPRI – Electrical Power Research Insitute

• NYSERDA

New York State Energy Research and Development Authority

• TAA/BAA Options, Made in America

• Patent/Patent-Pending Products

• SDVOSB Certified North America Installer, Maintenance and Repair Services

• AWS Cloud FedRAMP Authorized Charging Stations

• Smart Load Management AI Software

• WEX Fleet Cards and Public Access Mobile APPS

• Best Value Hardware/Software Cooperative Purchasing

• Nationwide SDVOSB Network of State Licensed Installers

• Solar Canopy and Micro-Grids for Facilities and Bases

Fleet Electrification Solutions

P.O. Box 518 • Bear DE 19701 • 302.250.4990

GatewayIntl360.com

EXPRESS NETWORK PLAN – 1, 3 & 5 YEAR OPTIONS

Level 2 & 3 OCPP charger networking with access control, user management, usage fees and revenue collection.

Power management, (load balancing), vehicle management and 3rd-party Integrations.

Charging control & management

MADE IN USA

OPTIONS AVAILABLE

GW-EV600

Adjustable output up to 11.5kW per port

GW-EV75

Adjustable output up to 11.5kW

Level 2 EV charging solutions

GW-EVE50

Smart power distribution panel & wall mount or pedestal style dispensers. Adjustable output up to 19.5kW.

GW-EV4600-360/480

Power distribution cabinet with pedestal style dispensers (2 dispensers, 4 ports total).

Adjustable output up to 480kW.

GW-EV4400-60/120/180

Level 3, DC freestanding solutions.

3 models (60, 120 & 180kW) with adjustable output.

GW-EV4040-40/60

Level 3, DC freestanding solutions.

2 models (40 & 60kW) with adjustable output.

40kW to 4800 kW Level 3 DC solutions

GW-EV500

Adjustable output up to 11.5kW

GW-EV550

Adjustable output up to 19.5kW

ELECTRIC GATE DIRECTION

DP-BC-1

BC-1

BC-2

BC-3

BC-4

BC-5

BC-6

GATE MOTOR #1

GATE MOTOR #2

BESS

TR-1GA-1

P :\A

_A A

P ro je ct s\

La ns in g P ub lic

S ch oo l D is tr ic t S

O -1

3\

6_ D

W G

\E -2

B us

C ha rg er

L ay ou t.d w g

5/

/2

:2 4:

A

M ga vi n.

sh af er

DRAWN

CHECKED

APPROVED

PLOT SIZE

REV.

REV. DESCRIPTION DATE

FOR REVIEW 1/28/2026

HILL CENTER - BUS

ELECTRIFICATION

E-2

GRS

DRAWING NO.

ANSI B - 11" X 17"

2/25/2026FOR REVIEW

SCALE

This drawing as an instrument of service, remains the property of CTC Engineering.

Any changes, publications, or unauthorized use is prohibited unless expressly approved.

5825 WISE ROAD

PROJECT NUMBER

2/25/2026

28172.00

1" = 40'

LANSING, MICHIGAN 48911

HILL CENTER

BUS CHARGER

LAYOUT PLAN

CC

T

Engineering

3915 Research Park Drive, Suite A-8 Ann Arbor, MI 48108

Office (734) 222-9951 - Fax (734) 222-9957

1" = 40'

40' 80'

N

BUS CHARGER/GATE ELECTRIFICATION PLAN PRELIMINARY

NOT TO BE USED

FOR CONSTRUCTION

GROUND

GROUND

TR-1 & GA-1

DP-BC-1

BC-1

BC-2

GATE MOTOR #1

TR-1GA-1

P :\A

_A A

P ro je ct s\

La ns in g P ub lic

S ch oo l D is tr ic t S

O -1

3\

6_ D

W G

\E -2

.X E

N

LA

R G

E D

B us

C ha rg er

L ay ou t.d w g

5/

/2

:2 3:

A

M ga vi n.

sh af er

DRAWN

CHECKED

APPROVED

PLOT SIZE

REV.

REV. DESCRIPTION DATE

FOR REVIEW 1/28/2026

HILL CENTER - BUS

ELECTRIFICATION

E-2.1

GRS

DRAWING NO.

ANSI B - 11" X 17"

2/25/2026FOR REVIEW

SCALE

This drawing as an instrument of service, remains the property of CTC Engineering.

Any changes, publications, or unauthorized use is prohibited unless expressly approved.

5825 WISE ROAD

PROJECT NUMBER

2/25/2026

28172.00

1" = 5'

LANSING, MICHIGAN 48911

HILL CENTER

BUS CHARGER

LAYOUT PLAN

CC

T

Engineering

3915 Research Park Drive, Suite A-8 Ann Arbor, MI 48108

Office (734) 222-9951 - Fax (734) 222-9957

1" = 5'

5' 10'

NOT TO BE USED

FOR CONSTRUCTION

2'

2'

(M)

TO

DP-BC-1

P :\A

_A A

P ro je ct s\

La ns in g P ub lic

S ch oo l D is tr ic t S

O -1

3\

6_ D

W G

\E -5

L ay ou t.d w g

5/

/2

:1 1:

A

M ga vi n.

sh af er

DRAWN

CHECKED

APPROVED

PLOT SIZE

REV.

REV. DESCRIPTION DATE

FOR REVIEW 4/7/2026

HILL CENTER - BUS

ELECTRIFICATION

E-5

GRS

DRAWING NO.

ANSI B - 11" X 17"

SCALE

This drawing as an instrument of service, remains the property of CTC Engineering.

Any changes, publications, or unauthorized use is prohibited unless expressly approved.

5825 WISE ROAD

PROJECT NUMBER

4/7/2026

28172.00

1" = 40'

LANSING, MICHIGAN 48911

HILL CENTER

BUS

CHARGER/GATE

ELECTRIFICATION

PLAN

CC

T

Engineering

3915 Research Park Drive, Suite A-8 Ann Arbor, MI 48108

Office (734) 222-9951 - Fax (734) 222-9957

1" = 40'

40' 80'

NOT TO BE USED

FOR CONSTRUCTION

CONTINUED FROM E-4

PROPOSED

ATS #1 & #2

LOCATIONS

REVIEW CABLE INSTALLATION

(CODE VIOLATION)

2 SETS OF 3"C WITH

4-350KCMIL XHHW CU

& 1-#1/0G IN EACH & 1-4/C #14 IN 1-1/4"C

600A TAP LOCATION

AutoCAD SHX Text 2500A

AutoCAD SHX Text

CT CAB

AutoCAD SHX Text 480V

AutoCAD SHX Text

480V/2000A DISCONNECT

AutoCAD SHX Text

14'-4" INTER-ROW SPACING

AutoCAD SHX Text

ATS-2

AutoCAD SHX Text

ATS-1

scan_j.laing_2026-05-21-13-22-25.pdf