Submitted By
Emily A. Egan, Director of Development Services
Reviewed By
A.M. Zayyad, Deputy Village Manager
Agenda Item Title
Title
A Resolution Approving an Amendment to the Professional Services Agreement with Walker Consultants, Inc. to Increase the Not-To-Exceed Amount from $163,700.00 to $171,700.00 to Provide for a Limited Slab Post-Tensioned Evaluation of the Village’s Avenue Parking Garage and Authorizing its Execution
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Overview
Overview
In April 2023, the Village Board authorized a Professional Services Agreement with Walker Consultants to prepare construction documents for bidding and engineering services during the repairs intended to address (2022) immediate, 2023, and 2024 repair recommendations as outlined in the condition assessment report of these facilities. The proposed amendment to the Agreement provides for the completion of a limited slab post-tensioned evaluation of the Avenue Parking Garage, for an additional amount of $8,000.00.
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Recommendation
Recommendation
Adopt the Resolution.
Background
On March 28, 2022, the Village issued a request for proposals (RFP) for a five-year condition assessment of the Village-owned Holley Court (1125 Ontario Street), The Avenue (720 North Boulevard), and Oak Park River Forest High School (137 N. Scoville Avenue) parking garages. The Village received four (4) responses to the RFP, with Walker Consultants, Inc., submitting the lowest qualified bid at a total cost of $12,800.00. The Village Manager consequently executed a Professional Services Agreement with Walker Consultants, Inc. on June 6, 2022, for a not-to-exceed amount of $12,800.00. The completed condition assessment by Walker Consultants, Inc. was submitted to the Village in August 2022.
The condition assessment included observation of readily accessible exposed structural elements of the parking garages, including floors, ceilings, beams, columns, and walls, and waterproofing elements consisting of sealants and expansion joints. Additionally, the stair towers, facades, and exposed floor drainage systems were visually reviewed. Observed distresses such as significant cracks, leaks, spalls, scaling, joint deterioration, and other similar adverse conditions were documented. The condition assessment also included concrete sounding of representative floor area surfaces, to identify concrete delamination. All repair quantities were based upon projections from field measurements in generally representative areas of the three garage facilities.
On April 24, 2023, the Village Board approved a Professional Services Agreement with Walker Consultants to provide construction documents, bidding, and engineering services for the repairs to the three parking garages in an amount not to exceed $163,700.00. The Village Board approved waiving the Village’s bid process for this contract given that Walker Consultants is best suited for the project since they completed the 2022 condition assessment of the structures. Furthermore, the Village has utilized the services of Walker Consultants for its previous 2017 garage condition assessment and the subsequent engineering design and construction management services stemming from that assessment. The scope of services for the professional services agreement included the preparation of construction documents for maintenance repairs identified in the five-year condition assessment for 2023 and 2024. This allowed the Village to bid out the 2023 and 2024 repairs together, resulting in cost savings. The agreement also provided for professional construction engineering management services throughout the course of the project in 2023 and 2024.
During recent concrete repairs conducted at the Avenue parking garage, concealed post-tensioned slab tendons were exposed on the underside of the second level. Walker Consultants conducted testing of the exposed slab post-tension tendons to determine if they were under tension. Six (6) of the fourteen (14) exposed tendons were not under tension or had partial tension. Based on this, Walker Consultants submitted the attached proposal dated April 25, 2024, for professional services to perform an additional limited post-tensioned slab tendon evaluation of this bay of the garage for an additional not-to-exceed amount of $8,000.00, bringing the total contract amount to $171,700.00.
It should be noted that a separate agenda item for the Village Board’s consideration is an amendment to the Independent Contractor Agreement with J. Gill & Co. for the increase to their scope of services arising from this evaluation. J. Gill employees will need to coordinate the exploratory openings, perform additional demolition and concrete removal, repair tendon sheathing following Walker’s inspections, and then re-pour the openings using mortar. Although there are non-destructive test methods available that promise to be able to identify distress within the embedded post-tensioned system, Walker Consultants believes the excavation method to be the most cost-effective, accurate, and reliable method of identifying the current level of slab tendon deterioration.
Fiscal Impact
Adequate budget authority exists in the FY 24 Parking Enterprise Fund within the following accounts:
506043770-784-570705 (Parking, The Avenue, Building Improvements) = $8,000.00
DEI Impact
N/A
Alternatives
N/A
Previous Board Action
On April 24, 2023, the Village Board approved RES 23-135, a Resolution Approving a Professional Services Agreement with Walker Consultants, Inc. to Provide Construction Documents, Bidding, and Engineering Services for the Repairs to the Village’s Holley Court, The Avenue and Oak Park River Forest High School Parking Structures in an Amount Not to Exceed $163,700.00, Authorizing its Execution and Waiving the Village’s Bid Process for the Agreement.
Citizen Advisory Commission Action
N/A
Anticipated Future Actions/Commitments
Future changes to the scope of work with Walker Consultants stemming from the limited post-tensioned slab tendon evaluation would be presented to the Village Board through additional contract amendments for its review and consideration at a future Village Board meeting.
Intergovernmental Cooperation Opportunities
N/A