Date: 4/13/2026 Page 1 of 2
PROJECT DESCRIPTION:
PROJECT NO: ST-2025-05 PURCHASE ORDER NO: P24238
CONTRACTOR: KALBAN, INC.
ITEM U/M QUANTITY UNIT PRICE TOTAL
Curb Ramps EA 7.00 $6,000.00 $42,000.00
Sidewalks SF 2,352.00 $13.00 $30,576.00
TOTAL ESTIMATED PRICE FOR THESE CHANGE ORDER: $72,576.00 JUSTIFICATION: (Be specific on each item. Attach supporting documents as necessary) CCO # % Date Approved
1 17.45%
Total 17.45%
$488,576.00
3/10/2026 Original Completion Date: 3/31/2026 Revised Completion Date: 3/31/2026 AUTHORIZATION BY CITY:
Recommended for approval by:
Date: __________
Hongzhi Qilin, P.E. , Associate Engineer
Date: __________
Keegan Olds P.E., CIP Supervisor
Approved by:
____________________________________________ Date: ____________ Savat Khamphou, P.E., Public Works Director
Original Contract Amount $416,000.00 Revised Contract Amount Date Started:
____________________________________________
____________________________________________
$72,576.00 0
$72,576.00 0 3/31/2026
Remove and Replace Sidewalk per City Standard 142
CONTRACT VARIANCE SUMMARY
Amount Time
This document shall become an amendment to the Contract and all provisions of the Contract will apply hereto. This Change Order constitutes a complete and final resolution of all claims of the Contract for additional time or additional compensation related to or affected by work that is the subject of this Change Order. Quantities of items other than Lump Sum are not to exceed the amounts indicated.
This change order addresses critical accessibility gaps and enhances pedestrian safety in the immediate vicinity of a local school zone. The scope includes the construction of seven (7) additional ADA-compliant curb ramps and an additional 2,352 square feet of adjacent sidewalk repairs. During construction of the project, the additional curb ramps were identified due to proximity to the nearby school zone. Additionally, as work progressed, it was found that there were large sidewalk displacements (greater than 3/4") adjacent to nearly all curb ramp locations (as-bid and additionally directed ramps) that needed to be remedied to provide a continuous ADA accessible path of travel. By integrating this work into the current contract, the City leveraged existing unit pricing and contractor mobilization, resulting in significant operational efficiencies and reduced construction disruptions.
CITYWIDE ADA AND SIDEWALK IMPROVEMENTS PROGRAM
DESCRIPTION OF CHANGES AND/OR EXTRA WORK:
The Contractor is hereby directed to make the herein described changes from the plans and specifications and/or perform the following described work not included in the Plans and Specifications for this project.
DESCRIPTION
Remove and Replace or Install New Curb Ramp per City
Standard 146 Case “B” & 147
CITY OF CORONA
Public Works Department
CITYWIDE ADA AND SIDEWALK IMPROVEMENTS PROGRAM NO. ST-2025-05 CONTRACT CHANGE ORDER NO. 1
Docusign Envelope ID: C94A2E36-5F5D-407F-936E-0AF1FAE085D0 4/13/2026
4/13/2026
4/13/2026
Date: 4/13/2026 Page 2 of 2
ACCEPTANCE BY CONTRACTOR:
Accepted by: _____________________________________________________Date: ____________________________ Matthew Lawrence, Project Manager
We, the undersigned Contractor, have given careful consideration to the above described changes and/or extra work and hereby agree that said work is the subject of this Change Order. Quantities of items other than Lump Sum are not to exceed the amounts indicated.
Docusign Envelope ID: C94A2E36-5F5D-407F-936E-0AF1FAE085D0 4/13/2026
INVOICE
Item Description Unit Qty Current Invoice Prev Billed Unit Price Total Price 1 Mobilization LS 0.00 1.00 $4,000.00 $4,000.00
2 Traffic Control LS 0.00 1.00 $4,000.00 $4,000.00
3 Implementation of BMPS LS 0.00 1.00 $4,000.00 $4,000.00 4 Informational Proejct Signs EA 0.00 2.00 $1,000.00 $2,000.00 5 Public Notification LS 0.00 1.00 $500.00 $500.00
6 Water Consumption 1.00 LS 0.00 1.00 $500.00 $500.00
7 Construction Surveying 1.00 LS 0.00 1.00 $500.00 $500.00 8 Remove and Replace Curb Ramp 65.00 EA 0.00 65.00 $6,000.00 $390,000.00 9 Grind Striping 1.00 LS 0.00 1.00 $4,500.00 $4,500.00
10 Thermoplastic Striping 1.00 LS 0.00 1.00 $6,000.00 $6,000.00 Change Order
Sidewalk R+R 2352.00 SF 2352.00 0.00 $13.00 $30,576.00
Curb Ramps 7.00 EA 7.00 0.00 $6,000.00 $42,000.00
Gross Total $488,576.00
Less 5% retention -$24,428.80
Less Amount Invoice 1 -$395,200.00
Net Amount Due $68,947.20
Corona, CA 92882
Job Title: Citywide ADA Sidewalk Improvements Program
City of Corona
400 S Vicentia Ave Date: 4/8/2026
Change Order Invoice
Invoice No. 2505-2
2.00 Total Qty
Completed to
Date
1.00 1.00
1.00 1.00
KALBAN, INC
GENERAL ENGINEERING CONSTRUCTION
26450 Ruether Ave, Suite 201, Santa Clarita, CA 91350
818-504-1065 Fax: 818-504-1067
[email protected]
Docusign Envelope ID: C94A2E36-5F5D-407F-936E-0AF1FAE085D0