ALL AMERICAN ASPHALT (ARTERIAL STREET SLURRY SEAL 2013-14)

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MEMORANDUM To: From: Subject: David Cavazos City Manager Fred Mousavipour, Executive Director Public Works Aaencv Date: March 4, 2015 Project 14-6809; Arterial Slurry Seal 2013-2014 Chance Order No. 1 ACCOUNTING UNIT -ACCOUNT -ACTIVITY NUMBER: 03217662-66220-14680901028 JUSTIFICATION EXTRA WORK AT AGREED UNIT PRICES 1. The contract documents require the contractor to reconstruct areas of deteriorated pavement sections of street by removing and replacing street section to a depth of 12 - inches before applying slurry seal. However, after field investigation of the project locations, the existing conditions revealed that large partially damaged areas of asphalt pavement do not necessitate this reconstruction method. Therefore, staff directed the contractor to apply a thin lift overlay over these areas. This overlay method cost was significantly lower than the full reconstruction method which allows staff to repair a larger number of partially deteriorated areas by reducing the cost to rehabilitate the pavement. Thus, staff was able to offset the original cost by adding additional line items to grind and overlay the asphalt street at agreed unit cost as shown below. The following contract items were added to compensate the contractor for the decrease in quantity as a result of site conditions. (PCO #1) CONTRACTOR : All American Asphalt P.O. Box 2229 ' r Corona, CA 92898 PROJECT DESCRIPTION: Arterial Slurry Seal 2013-2014; CHANGE ORDER NUMBER: 1 CHANGE ORDER AMOUNT: $ 289,272 ACCOUNTING UNIT -ACCOUNT -ACTIVITY NUMBER: 03217662-66220-14680901028 JUSTIFICATION EXTRA WORK AT AGREED UNIT PRICES 1. The contract documents require the contractor to reconstruct areas of deteriorated pavement sections of street by removing and replacing street section to a depth of 12 - inches before applying slurry seal. However, after field investigation of the project locations, the existing conditions revealed that large partially damaged areas of asphalt pavement do not necessitate this reconstruction method. Therefore, staff directed the contractor to apply a thin lift overlay over these areas. This overlay method cost was significantly lower than the full reconstruction method which allows staff to repair a larger number of partially deteriorated areas by reducing the cost to rehabilitate the pavement. Thus, staff was able to offset the original cost by adding additional line items to grind and overlay the asphalt street at agreed unit cost as shown below. The following contract items were added to compensate the contractor for the decrease in quantity as a result of site conditions. (PCO #1)