Litchfield-Park
AZ

Action Item
1971

FY 2017 Milling & Paving

Information

Department:Engineering DepartmentSponsors:
Category:Change Order

Attachments

  1. Printout
  2. Change Order No. 2

Financial Impact

Change Order No. 2 will result in an increase in the Contract Amount as follows: Original contract amount $221,777.45 Change Order No. 1 $ 31,889.08 Change Order No. 2 $ 64,400.38 New Contract Amount $318,066.91

Body

Recommended Motion:

TO aPPROVE CHANGE ORDER No. 2 in the amount of $64,400.38 TO THE CONTRACT FOR FY2017 MILLING AND PAVING IMPROVEMENTS for roadway stabilization of alcala Drive, Florence Avenue, and both Val verde circles.

 

Background/Discussion:

On December 21, 2016, the Mayor and Council awarded a construction contract to Young, Swenson & Cross Paving, Inc. in the amount of $221,777.45 for the Fiscal Year 2017 Milling and Paving Improvements.

 

On February 15, 2017, the Mayor and Council approved Change Order No. 1 adding the repaving of Alcala Drive in the amount of $31,889.08.

 

On February 14, 2017, it was discovered after the existing pavement removal on Florence Avenue that the existing subgrade material was unsuitable for re-paving by the Contractor. The subgrade was a sand and clay mixture with soft spots that would not support the heavy equipment.  The Contractor tried to compact the material but was unsuccessful.

 

On February 20, 2017, the asphalt on both Val Verde Circles was removed only to find the same type of unsuitable material. As directed by the City Engineer, the City engaged the services of Speedie & Associates Inc. to conduct a Geotechnical Investigation of the existing subgrade materials on all three streets. The Geotechnical Report was finalized on March 7, 2017 with recommendations for stabilizing the subgrade material.  Staff reviewed the report and recommend proceeding with stabilization of the subgrade using soil cement.  The top 4-inches of the existing material will be removed and the underlying soil will be scarified and mixed with the soil cement.  The soil will then be re-compacted and the salvaged base material replaced and compacted.  This will provide a stable subgrade on which the new pavement can be placed.

 

The City has allocated a total of $500,000 in the FY 2017 budget for pavement preservation.  The program is currently planned as follows:

 

Program Element

Contract Amount

Award Date

Milling & Paving

$221,777.45

12/21/16

    Alcala Drive Change Order No.1

$31,889.08

2/15/17

    Roadway Stabilization Change Order No. 2

$ 64,400.38

3/15/17

Crack Sealing

$25,000.00

2/15/17

Preservative Seal (HDMB) (estimated)

*$74,350.00

TBD

Microseal

**$38,877.89

3/15/17

Engineering & Project Management

$75,000.00

 

Total

$531,294.80

 

   *Excludes Village Parkway HDMB.

**To be awarded on March 15, 2017

 

Staff Recommendation:

It is recommended that the Mayor and Council approve Change Order No. 2 in the amount of $64,400.38 to add roadway stabilization improvements of Alcala Drive, Florence Avenue, and both Val Verde Circles to the contract for FY2017 Milling and Paving Improvements.

Meeting History

Mar 15, 2017 7:00 PM  City Council Regular Meeting
draft Draft

Mr. Woody Scoutten, City Engineer explained Change Order and the reason for the increase in the amount of $64,733.39. Increase was due to after removing the asphalt they discovered a large layer of sand underneath and the trucks and heavy equipment were sinking into the sand. The sand needed to be removed prior to laying new asphalt.

Vice Mayor Faith asked why sand created such a problem if they were able to pave over it fifty years ago. Mr. Scoutten explained the trucks and equipment weighed less back then and the sand must have been more stable but if they do it this way the asphalt will last longer plus it would be more costly to compact the sand and stabilize it.

MOVE TO APPROVE THE FISCAL YEAR 2016 APPROPRIATIONS AS RECOMMENDED.

RESULT:APPROVED [UNANIMOUS]
MOVER:Peter Mahoney, Council Member
SECONDER:Paul Faith, Vice Mayor
AYES:Tom Schoaf, Paul Faith, Jeff Raible, Peter Mahoney
ABSENT:Ann Donahue, Tim Blake, John Romack

Discussion