Title
Steel Tank Rehabilitation Program Assessment and Design Services Amendment 2 - WS85050023 (Ordinance S-43974)
Description
Request the City Manager, or his designee, to execute Amendment 2 to Contract 141598 with HDR Engineering, Inc. (HDR), for additional assessment and design services in support of the Steel Tank Rehabilitation Program. HDR's fee under this contract will be increased by $307,751.74, for a new total not-to-exceed amount of $1,322,860.03, including all subconsultant and reimbursable costs. Further request authorization for the City Controller to disburse all funds related to this item.
Report
Summary
There are 41 steel tanks located at 33 different sites serving as potable water storage/pressure surge protection facilities within the City's water production and distribution system. A program has been established to assess and rehabilitate these steel tanks to prevent deterioration over time based on their coating, structural, and site conditions.
HDR will provide assessment and design services for two sites, Tramanto Tank and Well 235, that fall under the "Group J Steel Tanks" project. HDR's services will include, but are not limited to: conduct inspections, provide assessments, prepare rehabilitation construction documents, obtain permits, and provide pre-construction services. In addition, HDR will provide inspection and oversight for warranty repair at Papago North Tank and re-coating at Deer Valley Water Treatment Plant Process Surge Tank.
Procurement Information
HDR was chosen for this project using a qualifications-based selection process according to Section 34-603 of the Arizona Revised Statutes. The City and HDR entered into Contract 141598 on Nov. 6, 2015.
Contract Term
The term of this amendment will be approximately 270 days and will coincide with construction services for this project. Contract work scope identified and incorporated into the contract prior to the end of the contract may be agreed to by the parties, and work may extend past the termination of the contract. No additional contract work scope changes may be executed after the end of the contract term.
Financial Impact
HDR's fee under this contract will be increased by $307,751.74, for a new total not-to-exceed amount of $1,322,860.03, including all subconsultant and reimbursable costs. Funding for these services is available in the Water Services Department's Capital Improvement Program budget. Contract payments may be made up to contract limits for all rendered contract services, which may extend past the contract termination.
Previous Council Action
City Council approved Assessment and Design Services Contract 141598 on Oct. 21, 2015. City Council approved Amendment 1 on Aug. 31, 2016.
Location
The tanks that will be serviced are: Tramonto Tank (7B-ES1) at 19th Ave. and Carefree Highway in Council District 2; Well 235 West (3C-GS1-2) in the Town of Paradise Valley; Deer Valley Water Treatment Plant Process Surge Tank at 30th and Dunlap Avenues in Council District 1; and Papago North Tank (2C-ES1-1) at 62nd Street and McDowell Road in Council District 6.
Department
Responsible Department
This item is submitted by Deputy City Managers Karen Peters and Mario Paniagua, the Water Services Department, and the City Engineer.