ATTACHMENT #1
DPW: 850-20\ev\Council\2026\041426\SBAC Floodplains Improvement Study Att 1.docx
Project Name: Project: South Branch Arroyo
Conejo Floodplain Improvements Study (MI 2527)
SECOND AMENDMENT TO
AGREEMENT FOR PROFESSIONAL SERVICES
BETWEEN THE CITY OF THOUSAND OAKS
AND
HASSAN KASRAIE dba KASRAIE CONSULTING
Contract No. 13355- 2023
THIS SECOND AMENDMENT to the Agreement for Professional Services entered into between the CITY OF THOUSAND OAKS, a municipal corporation, (hereafter “City”) and HASSAN KASRAIE dba KASRAIE CONSULTING (“Consultant”), dated July 18, 202 3, and amended on July 11, 2025 (herein Contract”) is made this 14th day of April 2026.
RECITALS
A. Section 3 of the Contract, currently, and as may have been previously amended, provides for a “not -to-exceed” total payment as consideration to Consultant of $ 273,105 for services generally and briefly described as local drainage and floodplain modeling, analysis, and report development for the South Branch Arroyo Conejo (SBAC).
B. Section 5 of the Contract , currently and as may have been previously amended, provides for a termination date of June 30, 2026.
C. City is in need of extending the Contract term and expanding the Scope of Work to conduct further analysis and modeling, prepare the model for eventual review by the Federal
Emergency Management Agency (FEMA), and assist the City with a comprehensive public data and information collection effort. Consultant is desirous of performing such services and receiving additional compensation while keeping all other terms intact.
D. City is in need of updating its Levine Act declaration in order to comply with state law.
AGREEMENT TO AMEND
NOW, THEREFORE, the undersigned parties to Contract agree to amend Contract as described below:
DPW: 850-20\ev\Council\2026\041426\SBAC Floodplains Improvement Study Att 1.docx
Part 1. The sum of $207,582 is added as compensation to Consultant under the present Contract for the above-described additional services, and Subsection 3 (a) of Contract is hereby amended to read in its entirety as follows:
(a) Maximum and Rate. The total compensation payable to Consultant by City for the services under this Agreement SHALL NOT EXCEED the sum of $480,687 and shall be earned as the work progresses on the following basis:
Hourly at the hourly rates and with reimbursement to Consultant for those expenses set forth in Consultant' s Schedule of Fees marked Exhibits "C" and “C-1”, attached and incorporated in the Agreement and First Amendment to the Agreement, respectively. The rates and expenses set forth in that exhibit shall be binding upon Consultant until June 30, 2026, after which any change in said rates and expenses must be approved in writing by City's Project Manager (City is to be given 60 days’ notice of any rat e increase request), provided the not to exceed amount is the total compensation due Consultant for all work described under this Agreement , and provided that the annual adjustments to the rates do not to exceed the Consumer Price Index for All Urban Consumers Series ID:
CUURS49ASA0, Not Seasonally Adjusted, All Items, Los Angeles - Long Beach -Anaheim, CA as maintained and published by the United States Bureau of Labor Statistics, or its successor index, with the calculation considered for the immediately previous twelve - month period (January through December).
Part 2. Exhibit A -1, Additional Scope of Work, attached hereto and incorporated herein, is hereby added to the Contract.
Part 3 . 12 months are added to the Contract and Section 5 is hereby amended in part to read as follows:
The term of this Agreement is from the date first written above to June 30, 2027 , unless term of this Agreement is extended, or the Agreement is terminated as provided for herein.
Part 4. Levine Act. An updated Exhibit D-1, attached hereto and incorporated herein, is hereby added to the Contract in compliance with requirements of the Levine Act.
Part 5. All terms used in Parts 1 through 4 above shall have the meanings ascribed thereto in Contract. Except as amended in Part s 1 through 4 above, all other sections, terms, obligations, duties, clauses, and provisions of Contract shall remain the same.
DPW: 850-20\ev\Council\2026\041426\SBAC Floodplains Improvement Study Att 1.docx
IN WITNESS WHEREOF, the parties execute this Second Amendment to Contract as of the date set forth above.
HASSAN KASRAIE dba
KASRAIE CONSULTING
Hassan Kasraie, President
CITY OF THOUSAND OAKS
Mikey Taylor, Mayor
ATTEST:
Laura B. Maguire, City Clerk
APPROVED AS TO ADMINISTRATION:
Andrew P. Powers, City Manager
APPROVED BY DEPARTMENT HEAD:
Nader Heydari, PE
Public Works Director
APPROVED AS TO FORM:
Office of the City Attorney
Tracy Friedl, Assistant City Attorney
DPW: 850-20\ev\Council\2026\041426\SBAC Floodplains Improvement Study Att 1.docx
EXHIBIT A-1
ADDITIONAL SCOPE OF WORK
SOUTH BRANCH ARROYO CONEJO DEFICIENCY STUDY - TASKS 15-19
Task 15. Sensitivity Analysis (Tc, Impervious Factors, Manning's) a) Consultant shall complete a ‘sensitivity analysis’ of the potential impact of recalculating the times of concentration (Tc) of unit sub-watersheds across the study area, considering current land-use definitions, impervious factors, and other parameters from which Tc are derived.
b) Consultant shall complete a ‘sensitivity analysis’ of the potential impact of n-Value adjustments, given the difference between n -Values assigned following the Ventura County Design Hydrology Manual, versus n -Values that might be derived based on observed field conditions / aerial photos.
These two sensitivity analyses shall consider the limits of potential values for both Tc and Manning ’s n -Values and the impacts to the modeling outcomes, including, but not limited to Q10 and/or Q100 volumes, system capacities, peak timings, flow paths, weir -dynamics, conduit and channel profiles, and/or other relevant model-output figures.
c) Consultant shall u pdate and finalize hydrology and channel hydraulics (VCRAT/TUFLOW).
d) Consultant shall capture video drone footage of the physical channel improvements where necessary in order to identify site conditions impacting a sensitivity analysis and/or modeling efforts. Drone related services may require prevailing wage under Labor Code § 1720 and applicable Department of Industrial Relations ( DIR) determinations, in addition to possession of a valid Federal Aviation Administration (FAA) Part 107 certificate.
Task 16. LOMR Floodplain Model (Existing Condition HEC-RAS Conversion) Consultant shall prepare a n extended and expanded existing condition 2 - dimensional model using the USACE HEC-RAS model, co-validating the TUFLOW model. As the model and analysis which will ultimately be presented to the Community and FEMA, the expanded RAS model shall assist in the understanding of the downstream channel deficiencies, the potential tailwater conditions at the Borchard Interchange, and any proposed project impacts downstream.
Task 17. Address Peer Review Comments
Consultant shall address the peer review comments in detail.
Task 18. Public Data and Information Collection
Consultant shall assist the City with a comprehensive public data and information collection effort, where Consultant and City shall jointly:
a) Develop a Memorandum that describes the floodplain challenges and study efforts to date.
DPW: 850-20\ev\Council\2026\041426\SBAC Floodplains Improvement Study Att 1.docx
b) Develop a narrative that requests data and information from the public, including property owners, residents, businesses, developers, and other stakeholders that is supportive of the effort to update the area FEMA maps in order to demonstrate predicted con ditions to improve flood insurance classifications.
c) Assist in assembling these materials for a publicly accessible City -owned- and-operated website.
d) Facilitate indexing and review of the received data and information from the public in relation to the Comment Matrix and Study Report. e) Incorporate received data and information into the Comment Matrix and Study Report, as appropriate.
One additional scenario for detailed analysis is assumed as part of this additional scope, with further model runs, beyond this one additional scenario, requiring work at time and materials rates.
Task 19. Update Reporting/City Council
Consultant shall finalize the report to include comment sections and updated scenarios, and shall also assist the City with public review, Council presentations, and the direction to proceed with a Letter of Map Revision (LOMR).
DPW: 850-20\ev\Council\2026\041426\SBAC Floodplains Improvement Study Att 1.docx
EXHIBIT D-1
DPW: 850-20\ev\Council\2026\041426\SBAC Floodplains Improvement Study Att 1.docx