HomeMy WebLinkAboutITEM V-C-1
A TY OF n ~TUBUR AGENDA BILL APPROVAL FORM
WASHINGTON
Agenda Subject: Date: October 12, 2010
Amendment No. 3 to Consultant Agreement No. AG-C-362
Department: Public Works Attachments: None Budget Impact: $0
Administrative Recommendation:
City Council grant permission to amend Consultant Agreement No. AG-C-362 with Brown and Caldwell,
Inc. for Engineering Services for sewer and stormwater modeling support.
Background Summary:
The City uses an on-call stormwater modeling and engineering support contract to assist with planning
and designing Capital Improvement Projects (CIP) and other stormwater management needs. Several
modeling tasks have been identified for the remainder of the 2010 and throughout 2011. In anticipation of
this additional work, staff increased the budget to Professional Services under BA #6. The new work
tasks are summarized below:
Task 1. Reddington Levee Setback Support
The consultant will continue evaluating possible relocation of the Brannan Park Pump Station as part of
the King County Flood Control District's Reddington Levee Setback Project. The evaluation will also
consider the inclusion of the airport area flooding as identified in the Comprehensive Drainage Plan
(CDP). Task budget $50,071.
Task 2. CIP Implementation Support
The consultant will perform modeling and hydraulic analyses as needed to support the proposed 2011
CIP. Task budget $25,283.
Task 3. Repair and Replacement Project Support
The consultant will perform modeling and hydraulic analyses as needed to support the annual repair and
replacement project. Task budget $14,745.
Task 4. Update Storm Drainage Infrastructure Database and Hydraulic Model
Ongoing updates to the hydraulic model will be made with emphasis on integrating the drainage from the
annexation areas and Lakeland Hills. Task budget $64,987.
W1018-3
A3.16.9
Reviewed by Council & Committees: Reviewed by Departments & Divisions:
❑ Arts Commission COUNCIL COMMITTEES: ❑ Building ❑ M&O
❑ Airport ❑ Finance ❑ Cemetery ❑ Mayor
❑ Hearing Examiner ❑ Municipal Serv. ❑ Finance ❑ Parks
❑ Human Services ❑ Planning & CD ❑ Fire ❑ Planning
❑ Park Board SPublic Works ❑ Legal ❑ Police
❑ Planning Comm. ❑ Other S Public Works ❑ Human Resources
Action:
Committee Approval: ❑Yes ❑No
Council Approval: ❑Yes ❑No Call for Public Hearing
Referred to Until _
Tabled Until
Councilmember: Wagner Staff: Dowd
Meeting Date: October 18, 2010 Item Number: V.C.1
AUBURN *MORE THAN YOU IMAGINED
Agenda Subject: Date: October 12, 2010
Amendment No. 3 to Consultant Agreement No. AG-C-362
Task 5. Flow Monitoring, Model Calibration and CIP Refinement
As recommended in the CDP, stormwater flow data will be gathered to calibrate the hydraulic model and
then refine the CIP projects to better meet level of service goals or reduce project construction costs.
Task budget $84,720.
The amended cost for this contract is $239,806 for a total contract amount of $289,806 and is funded by
the 432 Storm Fund. This amendment will also extend the contract term until December 31, 2011.
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