City Council
259 N. Wilma Avenue
Ripon, CA 95366
MEMO
To: Honorable City Council
From: Kevin Werner, City Administrator
Date: 08/08/2023
Subject: Stockton Avenue Rehabilitation Change Order 13 RECOMMENDED ACTION:
Approve Change Order No. 13 for work orders and credits for bid items deemed unnecessary for project in the not to exceed amount of $1,427.37 (funding source: Street & Road Operating Fund).
BACKGROUND:
The Stockton Avenue Rehabilitation Project was awarded to D.A. Wood Construction, Inc. at the February 9, 2021 City Council meeting for an amount of $4,747,866.50. The Stockton Avenue Rehabilitation Project will involve a complete road reconstruction from Second Street to Doak Boulevard, including the repair and replacement of several underground utilities along with the installation of concrete pavers, new streetlights, and 6-foot sidewalks.
At the April 13, 2021 City Council meeting, Council approved Change Order No. 1 in the not to exceed amount of $189,062.81 for the truck detour improvements required on private property and changes to the scope of the project at the request of Ripon Manufacturing Company.
At the June 8, 2021 City Council meeting, Council approved Change Order No. 2 in the not to exceed amount of $28,174.31 for the increase in price of PVC pipe material due to a national material shortage.
At the August 10, 2021 City Council meeting, Council approved Change Order No. 3 in the not to exceed amount of $135,904.03 for various unforeseen field conditions that required changes to the contract documents.
At the September, 14, 2021 City Council meeting, Council approved Change Order No. 4 in the not to exceed amount of $38,764.98 to locate a water lateral and for additional work needed for storm drain conflicts on Stockton Avenue between Doak Boulevard and Fifth Street.
At the November 9, 2021 City Council meeting, Council approved Change Order No. 5 in the not to exceed amount of $60,265.77 for additional work necessary to lower the elevation of 48” Storm Drain Pipe installed to avoid an existing PG&E transmission line.
At the December 14, 2021 City Council meeting, Council approved Change Order No. 6 in the not to exceed amount of $11,351.00 to adjust catch basins to eliminate conflicts with an MID electrical line and PG&E gas transmission line.
At the January 11, 2022 City Council meeting, Council approved Change Order No. 7 in the not to exceed amount of $24,300.00 for three field changes required to install the water line.
At the February 8, 2022 City Council meeting, Council approved Change Order No. 8 in the not to exceed amount of $36,120.00 for four field changes required to resolve storm drain conflicts.
At the March 8, 2022 City Council meeting, Council approved Change Order No. 9 in the not to exceed amount of $40,076.00 for additional potholing required to adhere to PG&E internal standards, demolition of an industrial sewer manhole found within the proposed curb and gutter, upsizing street light conduits and the demolition of asphalt found buried beneath existing soil on Stockton Avenue.
At the April 12, 2022 City Council meeting, Council approved Change Order No. 10 in the not to exceed amount of $19,159.86 for additional concrete driveway work.
At the June 9, 2022 City Council meeting, Council approved Change Order No. 11 in the not to exceed amount of $91,644.64 for concrete price escalations and additional frontage work at two properties.
At the July 12, 2022 City Council meeting, Council approved Change Order No. 12 in the not to exceed amount of $138,799.25 for 6" grind and overlay at the South end of Stockton Avenue and additional pull box installation for street light connection).
DISCUSSION:
The Stockton Avenue Rehabilitation Project required design changes due to various unforeseen field conditions and design changes made during construction, as summarized below:
Project changes related to unforeseen field conditions: When placing and compacting the road base on Stockton Avenue, two (2) areas of the road were inundated with water due to seepage from irrigation runoff from adjacent private properties. This runoff resulted in the base being unsuitable and required excavation of the existing impacted road base, and replacement and compaction of new road base. The additional cost related to these changes is $5,409.12.
During construction, a water line that was reported as abandoned was still pressurized with water. The contractor dug through the line anticipating it to be empty. To prevent water from having significant impacts on the construction area, the contractor excavated a basin to contain the water and reduce impacts to the road construction activities. The additional cost related to these changes is $8,359.96.
A section of curb and gutter at a driveway corner was found to be settling and creating a slanted edge that was unsuitable for paver installation. After discovery of this, contractor was directed to repair the section to create a flat edge for the future paver installation. Contractor removed and replaced the settling portion of curb, gutter, and driveway at this corner. The additional cost related to these changes is $4,077.76
During the excavation for the new road section, two (2) elevation conflicts were found from existing PG&E lines and three (3) elevation conflicts from existing sanitary sewer and storm drain manholes required changes from the original design. The additional cost related to these changes is $21,045.07
Project changes related to design changes: During the construction of the proposed sidewalk, a handicap ramp that was included in the contract was determined to not comply with ADA requirements after the contractor had graded and compacted the subgrade for the handicap ramp.
The contractor was directed to regrade and compact the subgrade as necessary to meet ADA requirements. The additional cost related to these changes is $1,381.27.
Also, the contract included a valley gutter to be located at the property at 737 South Stockton Avenue. Staff requested a change order from the contractor to modify the valley gutter placement after the forms were placed to reduce the likelihood of rainfall runoff pooling at the building. The additional cost related to these changes is $6,913.19.
Finally, various contract changes resulted in minor adjustments to the bid line items based on the actual work that was performed. This resulted in a savings of $45,759.
FISCAL IMPACT:
The attached Change Order No. 13 is in the amount of $1,427.37 and will be funded through the Street & Road Operating Fund.
To summarize the funding related to this change order, see the table below.
Amount
Original Contract Price $ 4,747,866.50
Change Orders (No. 1-12) $ 813,622.65
Change Order 13 $ 1,427.37
Current Contract Price $ 5,562,916.52
Attachments:
1. CCO13