HomeMy WebLinkAboutAgenda Report - October 6, 2021 C-07AGENDA ITEM Cw7
4 CITY OF LODI
COUNCIL COMMUNICATION
TM
AGENDA TITLE: Adopt Resolution Ratifying Expenses, Authorizing the City Manager to Execute
Change Order No. 3, Accepting Improvements under Contract for Central Plume
PCE/TCE Groundwater and Soil Vapor Extraction System Decommissioning and
Removal
MEETING DATE:
PREPARED BY:
October 6, 2021
Public Works Director
RECOMMENDED ACTION: Adopt Resolution ratifying expenses, authorizing the City Manager
to execute Change Order No. 3, accepting improvements under
contract for Central Plume PCE/TCE Groundwater and Soil Vapor
Extraction System Decommissioning and Removal.
BACKGROUND INFORMATION: On August 19, 2020, Council approved specifications and
authorized advertisement for bids for the Central Plume PCE/TCE
Groundwater and Soil Vapor Extraction System Decommissioning
and Removal Project. On October 21, 2020 Council rejected the original bids and authorized a re -bid of
the project due to inconsistencies in the original bids submitted. Council awarded the contract to A.M.
Stephens Construction Co. in the amount of $601,714, on January 6, 2021. On April 7, 2021 Council
authorized an increased appropriation of $150,000 to account for the removal of additional extraction
wells that were part of the initial extraction pilot program; and authorized the City Manager to execute
additional change orders resulting in a total appropriation of $987,500 with City Manager change order
authority of $230,000.
This project generally consisted of decommissioning the soil vapor extraction and the groundwater
extraction and treatment systems, located near the alleyway between Pine and Oak Streets, and
Pleasant Avenue and Church Street, as shown on Exhibit A. Before and after photos are included as
Exhibit B.
Specifically, the project included the removal of several extraction wells in the area that all fed into the
central extraction/capture unit that was constructed in 2010. Since a portion of the work was performed
on private property, multiple use agreements between the City and adjacent property owners were
executed to facilitate construction of the initial extraction system and related underground utilities. The
agreements required that upon decommissioning and removal of the extraction systems, the City was
required to remove the wells and all of the underground piping on the private property and replace any
damage to existing improvements caused by the removal. During construction it became apparent that
resurfacing was necessary on the majority of the adjacent parking lots where the utilities were being
removed due to the impact of the construction equipment and utility removals.
The original contract completion date was June 11, 2021, with the adjusted contract completion date
(including the change orders) being September 10, 2021. The actual project completion date was
September 8, 2021. The additional contract days were added to accommodate the expanded scope of
work included in the change orders.
The original contract amount was $601,713.90. The final contract amount was $839,323.18. The
reasons for the increase in project cost are reflected below:
APPROVED: Steve Schwabauer
Stephen Schwabauer, City Manager
K:\WP\PROJECTS\WATERWCE,TCE\Central\Exlradion System Demo.doc 9/28/2021
Adopt Resolution Ratifying Expenses, Authorizing the City Manager to Execute Change Order No 3, Accepting Improvements under Contract for Central Plume
PCEfrCE Groundwater and Soil Vapor Extraction System Decommissioning and Removal
October 6, 2021
Page 2
Change Order No. 1 ($134,075.00): Included removal of unknown piping and appurtenances left over
from the original pilot test study located in the parking lot of 6 S. Pleasant Avenue. These items should
have been removed/abandoned in 2010. Due to the extensive surface impacts caused by this additional
work, most of the parking lot needed resurfacing to comply with the terms of the private property use
agreements.
Change Order No. 2 ($38,380.92): Included additional City requested parking lot resurfacing to abandon
an additional, unknown extraction well not included in the original scope of work; and the cost to dispose
of contaminated soil excavated from the alley to comply with the State approved closure plan.
Change Order No. 3 ($65,153.36): Included additional City requested demolition, paving, concrete and
landscape work associated with returning the affected properties to their former condition in accordance
with the private property use agreements.
Although the City Manager's authorized change order authority exceeds the total of Change Orders 1-2,
the addition of Change Order No. 3 increases the total project cost to $839,324 which exceeds the City
Manager's change order authority. For this reason, staff is recommending ratifying the expenses
($9,324), authorizing Change Order No. 3.
Following acceptance by the City Council, as required by law, the City Engineer will file a Notice of
Completion with the County Recorder's office. The notice serves to notify vendors and subcontractors
that the project is complete and begins their 30 -day period to file a stop notice requiring the City to
withhold payments from the prime contractor in the event of a payment dispute.
FISCAL IMPACT: Annual operation and maintenance costs for this facility will be eliminated
as a result of system removal. The project was entirely funded by the
Central Plume Settlement Fund and did not impact the General Fund.
FUNDING AVAILABLE: This project was funded by the Central Plume Settlement Fund as follows.
The PCE/TCE Rates Fund was budgeted but not used.
Fiscal Year 2020/21 Budget:
Central Plume Settlement Funds (59099000.77020) $967,500
PCE/TCE Rates (56599000.77020) (Not used) $ 20,000
Total: $987,500
Andrew Keys
Andrew Keys
Deputy City Manager/Internal Services Director
UL( -�
Charles E. Swimiey, Jr.
Public Works Director
Prepared by Sean Nathan, Senior Civil Engineer
CES/SN/cd
Attachment
K:1WPIPROJECTSIWATERIPCE,TCE1Central\Extraction System Demo.doc 9/28/2021
ATTACHMENT A
Central Plume
Decommissions
SVE and GWET
Site Plan
Legend
■ Demo Well / Remove Vault
Remove Pipes
Abandon Pipes In Place
- Treatment System
® Proposed Excavation
Reconstruct Alley Approach
25 50 100
Feet
Exhibit B
Before & After Photos
Treatment Unit Location (Prior to Removal)
Treatment Unit Location (After Removal)
6 South Pleasant Street Parking Lot & Alley (Before Resurfacing)
6 South Pleasant Street Parking Lot & Alley (After Resurfacing)
RESOLUTION NO. 2021-269
A RESOLUTION OF THE LODI CITY COUNCIL RATIFYING EXPENSES;
AUTHORIZING THE CITY MANAGER TO EXECUTE CHANGE ORDER NO. 3;
AND ACCEPTING IMPROVEMENTS UNDER CONTRACT FOR CENTRAL
PLUME PCE/TCE GROUNDWATER AND SOIL VAPOR EXTRACTION
SYSTEM DECOMMISSIONING AND REMOVAL PROJECT
WHEREAS, on August 19, 2020, Council approved specifications and authorized
advertisement for bids for the Central Plume PCE/TCE Groundwater and Soil Vapor Extraction
System Decommissioning and Removal Project; and
WHEREAS, on January 2, 2021, Council awarded the contract to A.M. Stephens
Construction Co. in the amount of $601,714; and
WHEREAS, this project generally consisted of decommissioning the soil vapor extraction
and the groundwater extraction and treatment systems, located near the alleyway between Pine
and Oak Streets, and Pleasant Avenue and Church Street; and
WHEREAS, on April 7, 2021, Council authorized an increased appropriation of $150,000
and authorized the City Manager to execute additional change orders, resulting in a total
appropriation of $830,000; and
WHEREAS, the final contract amount was $839,324 which exceeds the
Council -approved appropriation of $830,000; and
WHEREAS, staff recommends Council ratify expenses, authorize the City Manager to
execute Change Order No. 3, and accept improvements under the contract for the Central
Plume PCE/TCE Groundwater and Soil Vapor Extraction System Decommissioning and
Removal Project.
NOW, THEREFORE, BE IT RESOLVED that the Lodi City Council does hereby ratify
expenses for the Central Plume PCE/TCE Groundwater and Soil Vapor Extraction System
Decommissioning and Removal Project; and
BE IT FURTHER RESOLVED that the Lodi City Council does hereby authorize the
City Manager to execute Change Order No. 3 to the contract for the Central Plume PCE/TCE
Groundwater and Soil Vapor Extraction System Decommissioning and Removal Project; and
BE IT FURTHER RESOLVED that the Lodi City Council does hereby accept
improvements under the contract for the Central Plume PCE/TCE Groundwater and Soil Vapor
Extraction System Decommissioning and Removal Project; and
BE IT FURTHER RESOLVED, pursuant to Section 6.3q of the City Council Protocol
Manual (Res. No. 2019-223), the City Attorney is hereby authorized to make minor revisions to
the above -referenced document(s) that do not alter the compensation or term, and to make
clerical corrections as necessary.
Dated: October 6, 2021
I hereby certify that Resolution No. 2021-269 was passed and adopted by the City
Council of the City of Lodi in a regular meeting held October 6, 2021, by the following vote:
AYES: COUNCIL MEMBERS — Chandler, Hothi, Khan, Kuehne, and
Mayor Nakanishi
NOES: COUNCIL MEMBERS — None
ABSENT: COUNCIL MEMBERS — None
ABSTAIN: COUNCIL MEMBERS — None
2NIFE CUSMIR
City Clerk
2021-269