Alf Sorensen Community Center was constructed in 1981 with several remodels completed in the building since original construction.   Hershenow + Klippenstein Architects (H+K) was retained in 2011 to make preliminary assessments and recommendations regarding a means of reducing the humidity levels in the area containing the swimming pool (the natatorium).  The original building plans followed design standards common at the time of construction; however experience nationwide has shown that temperature control and ventilation of a natatorium requires a more robust ventilation system than was originally provided.  The high humidity levels in the natatorium have caused extensive corrosion and deterioration of the ceiling materials above the natatorium and the roof system after 30 years of poor ceiling ventilation.

In March, 2014 the City Council approved a contract to Frank Lepori Construction to renovate the natatorium and construction began in June, 2014.  Early in the construction it was discovered that many structural members, along with the roof sheathing, had substantial deterioration, which greatly reduced the structural integrity of the roof and caused a safety concern.  A structural evaluation from the underside of the roof was completed and a scope of work was presented to the City Council in change order no. 1 to begin the framing and roof repairs.  Upon removal of the roof and further evaluation of the roof framing, it was determined that additional framing repairs and seismic reinforcement was necessary for the safety and longevity of the building.  The design team also brought forward recommendations for the roofing system that will greatly improve the performance of the roof and further reduce the possibility of condensation.  This recommendation moves the insulation from the ceiling to the outside of the roof where rigid insulation is sandwiched between the new metal roof and the plywood deck.  There were also additional unforeseen modifications required for the mechanical, electrical, and plumbing systems.

In the initial structural evaluation, the roof over the tot pool appeared to be structurally sound, however upon further investigation it was discovered that the tot pool roof had more extensive damage than was originally determined.  This requires replacement of the entire roof system over the tot pool which is also included in Change Order No. 2

A.  Utilize newly available budget authority within fund 1404:

The City has received $411,071 from TMWA for over-billed amounts at the Alf Sorensen Community Center for the last several years.  These funds have been transferred to the Capital Projects Fund 1404 and are available for this project.  A budget augmentation will be required to avoid a budget violation as the funds were received after the fiscal year 2015 budget was filed.  An amendment of the fiscal year 2015 CIP would transfer funding to the Alf Sorensen Natatorium Renovation project and would be utilized for Change Order No. 2 for the Alf Sorensen Natatorium Renovation Project, Bid No. 13/14-015, PWP-WA-2014-098 to Frank Lepori Construction, Inc., in the amount of $205,000.

B.  Change Order No. 2 for the Alf Sorensen Natatorium Renovation:

The work included in this change order includes replacement of additional deteriorated roof framing; installation of seismic reinforcements to the roof frame; replacement of the roof deck over the tot pool, and associated mechanical, electric, plumbing and finishes required to complete these tasks.

City Staff recommends that changer order No. 2 include a force account of $70,908 due to the increase in the total amount of work under contract and the degree of uncertainty for completion of this project.  The prior force account amount was based upon a smaller scope of work and assumptions about the conditions within the building.  The force account has been spent to provide: containment and cleaning, select demolition, portions of the roof framing repairs and seismic reinforcements, and the recommended modifications to the roof system.  The work included in this change order is based upon the visible conditions encountered during the replacement of the roof and incidental work completed since change order no. 1 was approved in August, 2014.  The force account provides a means to continue working while resolving minor problems which arise during construction through the completion of the project.

A break-down of the tasks and associated costs in this change order are as follows:

Containment and Cleaning:                                                                                                                 $10,426.39   

Roof Framing Repairs and Seismic Reinforcements:                                                                           55,661.38   

Tot Pool Roof Repairs:                                                                                                                          40,847.00

Mechanical, Electric, Plumbing, Finishes:                                                                                             27,157.20

City Force Account:

Increase Force Account for unknown conditions and potential revisions                                             70,908.03

Total:                                                                                                                    $205,000.00                                                   

This additional work will extend the contract period by 49 calendar days for a contract completion date of February 13, 2015.

A.  Utilize available funding between projects:

1.  City Council could approve utilizing funds from Capital Projects Fund 1404 for Change Order No. 2 as outlined by Staff.

2.   City Council could reject utilizing the funds from the Capital Projects Fund 1404 for Change Order No. 2 and provide direction to the City Manager.

B.  Change Order No. 2 for the Alf Sorensen Natatorium Renovation:

1.    City Council could approve Change Order No. 2, with prior approval to utilize funds in Capital                     Projects Fund 1404, as outlined by Staff.

2.   City Council could reject approval of Change Order No. 2 and provide direction to the City Manager.

A.  “I move to utilize $205,000 of Capital Projects Fund 1404 to fund change Order No. 2 (AC-5025) for the Alf Sorensen Natatorium Renovation Project”.

B.   “I move to approve Change Order No. 2 (AC-5025) for the Alf Sorensen Natatorium Renovation Project, Bid No. 13/14-015, PWP-WA-2014-098 to Frank Lepori Construction, Inc., in the amount of $205,000”.