12100-0001\2296933v1.doc City of
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CITY OF MANHATTAN BEACH PUBLIC WORKS DEPARTMENT
Engineering Division
CONTRACT CHANGE ORDER NO. 2
PROJECT NO.: SD-279
PROJECT TITLE: Santa Monica Bay TMDL HFCTTCD Trash Capture Project DESCRIPTION: Improvements within the Dominguez Channel Watershed to comply with MS4 Permit total maximum daily load (TMDL) waste discharge requirements . This work includes diverting stormwater from an underground storm drain to a new hydrodynamic separator unit (HDS Unit), and related drainage and road restoration, and improvement work. In addition, the installation of twelve (12) catch basin treatment systems in the watershed.
TO: Clarke Contracting, Corp.
You are hereby instructed to comply with the following changes from the Contract Plans and Specifications:
SUMMARY OF CHANGES
Description
(Detailed Explanation Attached)
Change in
Contract Price1
Change in
Work Days
1. Aviation Blvd. HDS Unit (COR #14 - 2025-07-25) $572,468.00 40
2. Catch Basin Treatment Systems (COR #15 - 2025-
07-25)
$54,000.00 0
Net Change in Contract Price and Work Days 626,468.00 40 1Deduction or decrease in Contract Price is denoted in parentheses.
The following change is hereby made a part of the Contract Documents and shall be performed under the same terms and conditions as required by the original Contract Documents. Except as modified herein, the original Contract Documents and all prior amendm ents shall remain in full force and effect and all of the terms of the Contract Documents are hereby incorporated in this Change Order.
12100-0001\2296933v1.doc City of
MB Form
SUMMARY OF ALL CHANGE ORDERS
ORIGINAL CONTRACT AMOUNT ........................... $3,225,000.00 CCO No.1 ................................ ................................ .. $(11,721.75) CCO No.2 ................................ ................................ ... $626,468.00 TOTAL ................................ ................................ ..... $3,839,746.25
SUMMARY OF WORKING DAYS
FIRST DAY OF WORK: ................................ ................ 09/30/2024 CONTRACT WORKING DAYS: ................................ ................ 120 TIME EXTENSION: CCO 1 ................................ ...................... 288 TIME EXTENSION: CCO 2 ................................ ........................40 NEW TOTAL WORKING DAYS: ................................ ............... 448 LAST DAY OF WORK: ................................ .................. 06/30/2026
12100-0001\2296933v1.doc City of
MB Form
CHANGE ORDER DETAIL
Change Order No.: 2
Project No.: SD-279
Project Title: Santa Monica Bay TMDL HFCTTCD Trash Capture Project Description: Improvements within the Dominguez Channel Watershed to comply with MS4 Permit total maximum daily load (TMDL) waste discharge requirements . This work includes diverting stormwater from an underground storm drain to a new hydrodynamic separator unit (HDS Unit), and related drainage and road restoration, and improvement work. In addition, the installation of twelve (12) catch basin treatment systems in the watershed.
The changes or interpretations described and noted herein are hereby authorized. The signed original of this order is on file in the Department of Public Works. Shown as separate paragraphs:
(A) Reason for Change; (B) Description of Change; (C) Change in Contract Costs; and (D) Change in Completion Date.
Item No. 1 – COR #15 - 2025-07-25 – Catch Basin Treatment Systems – Dominguez Channel Watershed
A. Reason for Change : To support MS4 Permit compliance efforts, the City expanded its stormwater improvement strategy within the Dominguez Channel Watershed to include targeted catch basin treatments. This phase involves the installation of 12 catch basin systems across five Dominguez Channel Watershed locations to enhance trash capture and prevent debris from entering downstream systems. City staff recommended incorporating this scope into the existing Clarke Contract to realize cost efficiencies and leverage the contractor’s proven experience performing comparable work within the Santa Monica Bay watershed.
B. Description of Change:
ITEM DESCRIPTION UNIT UNIT
PRICE
BID OR
CURRENT
APPROVED
QTY
FINAL
QTY
CHANGE CHANGE
IN COST1
1. CATCH BASIN SYSTEMS EA. $4,500.00 0 12 12 $54,000
1Deduction or decrease in Contract Price is denoted in parentheses.
C. Change in Contract Cost:
Add $54,000.00
D. Change in Completion Date:
0 Days
12100-0001\2296933v1.doc City of
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Item No. 1 – COR #16 - 2025-07-25 - Aviation Blvd. HDS Unit A. Reason for Change: To support compliance with MS4 Permit discharge requirements, the City developed improvement plans to reroute stormwater to a new hydrodynamic separator (HDS) unit located at Aviation Boulevard north of Marine Avenue . This infrastructure is critical to achieving the targeted capture of trash from 50% of the Dominguez Channel Watershed by September 2026. To optimize resources and reduce costs, City staff additionally proposed incorporating this scope into the existing Clarke Contract, again leveraging the capabilities of a contractor already executing similar work in the Santa Monica Bay watershed.
B. Description of Change:
ITEM DESCRIPTION UNIT UNIT
PRICE
BID OR
CURRENT
APPROVED
QTY
FINAL
QUANTITY
CHANGE CHANGE IN
COST1
2 AVIATION BLVD. HDS
UNIT LS 1 0 1 1 $572,468.00
1Deduction or decrease in Contract Price is denoted in parentheses.
C. Change in Contract Cost:
Add $572,468.00
D. Change in Completion Date:
40 Day(s)
SIGNATURE PAGE TO FOLLOW:
The original Contract Price was $ 3,225,000.00. Contract Change Order No. 1 decreased the Contract Price by $ 11,721.75 to $3,213,278.25. Contract Change Order No. 2 increased the Contract Price by $626,468.00 to $3,839,746.25, for a net increase of approximately 19% to the original Contract.
The original Contract Time of 120 Working Days was extended by 288 Working Days per Change Order No. 1, and by 40 Working Days per Change Order No. 2. The last contract Working Day is 06/30/2026.
12100-0001\2296933v1.doc City of
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Ordered:
Ted Samaan, Interim Public Works Director
Date: _____________
Concurred by:
Gilbert Gamboa, Acting City Engineer
Date: _____________
Concurred by:
Eduardo Pech, Project Manager
Date: _____________
Acceptance by the Contractor:
This Change Order is in full compromise and settlement of all adjustments to Contract Time and Contract Price, and compensation for any and all delay, extended or additional field and home office overhead, disruption, acceleration, inefficiencies, lost lab or or equipment productivity, differing site conditions, construction interferences and other extraordinary or consequential damages (hereinafter called “Impacts”), including any ripple or cumulative effect of these Impacts on the overall Work under the Contract arising directly or indirectly from the performance of Work described in this Change Order. By execution of this Change Order, the Contractor agrees that this Change Order constitutes a complete accord and satisfaction with respect to all claims fo r schedule extension, Impacts, or any costs of any nature, character or kind arising out of or incidental to this Change Order.
Name: Date:
Title: Mark Cuneo, Vice President