2022-08-08_item_4.7_approve_amendment_no._3_contract_change_order_no._4_related_to_well_10_testing_analysis_modifications_cip_pw_22-37

ITEM 4. 7

CITY MANAGER' S REPORT
AUGUST 8, 2022 CITY COUNCIL REGULAR MEETING
ITEM: APPROVE AMENDMENT NO. 3 WITH LUHDORFF &

SCALMANINI CONSULTING ENGINEERS, CONTRACT
CHANGE ORDER NO. 4 WITH COMMERCIAL PUMP &
MECHANICAL, INC., AND RELATED BUDGET
AMENDMENT FOR WELL 10 TESTING, ANALYSIS AND
MODIFICATIONS, CAPITAL IMPROVEMENT PRO7ECT
PW 22- 37
RECOMMENDATION: Adopt Resolution Approving Amendment No. 3 with Luhdorff & Scalmanini Consulting Engineers,
Contract Change Order No. 4 with Commercial Pump
Mechanical, Inc., and Related Budget Amendment
for the Well 10 Testing, Analysis and Modifications,
Capital Improvement Project PW 22- 37
SUMMARY:

The Well 10 Testing, Analysis and Modifications ( Well 10 TAM), Capital Improvement Project ( CIP) PW 22- 37 is needed to address sanding and other maintenance items for the City' s Well 10, a critical component of the City' s water supply. On November 8, 2021, Council approved the creation of CIP PW 22- 37 and Amendment No. 2 with Luhdorff & Scalmanini Consulting Engineers ( LSCE), and on February 14, 2022, Council awarded a construction contract to Commercial Pump and Mechanical Inc., CPM).

The well testing and analysis have been completed and a change order has been issued to CPM to purchase and install a well liner that is recommended to address the well sanding issue. Costs to complete the project have risen due to a number of factors including review and approval of the well design from the Division of Drinking Water and the San Joaquin County Environmental Health Department ( SJEHD), increased costs for materials, and additional engineering services from LSCE.

Additional modifications have also been recommended including a new pump, lineshaft and mechanical seal that exceed the current project budget.

Staff requests Council to approve Amendment No. 3 with LSCE in the amount of 15, 000 for additional engineering services and Contract Change Order No. 4 CCO# 4) with CPM in the amount of $ 117, 402 for additional recommended modifications. In addition, staff requests Council approve a budget amendment allocating $ 152, 263 of the Water Capital Replacement Fund 5600 for the project to complete the Well 10 Testing, Analysis and Modifications, CIP PW 22- 37.

CITY MANAGER' S REPORT PAGE 2
AUGUST 8, 2022 CITY COUNCIL REGULAR MEETING
APPROVE AMENDMENT NO. 3 WITH LSCE, CONTRACT CHANGE ORDER NO. 4 WITH CPM AND BUDGET AMENDMENT FOR WELL 10 TESTING, ANALYSIS AND MODIFICATIONS, CAPITAL IMPROVEMENT PROJECT PW 22- 37 BACKGROUND:

The Well 10 TAM, CIP PW 22- 37 is needed to address sanding and other maintenance issues for the City' s Well 10, one of four active wells comprising the City' s groundwater supply.

On November 8, 2021, City Council approved the creation of the Well 10 TAM, CIP PW 22- 37 and approved Amendment No. 2 with LSCE. On February 14, 2022, Council awarded a construction contract to CPM for well testing and analysis, recommended well maintenance and contingency for alternate bid items for anticipated potential recommended well modifications and repairs.

The initial well testing and analysis have been completed and a change order has been issued to CPM to purchase and install a well liner that is recommended to address the well sanding issue. Due to the long lead- time required to procure the materials, Well 10 has been placed back on- line in case it is needed to augment existing water supplies to meet seasonal peak demand.

However, costs have risen due to a number of factors, including review and approval of the well design from the Division of Drinking Water and the San Joaquin County Environmental Health Department, increased costs for materials, and additional engineering services from LSCE. Additional modifications have also been recommended including a new pump, lineshaft and mechanical seal that exceed the project budget. Change Order No. 4 with CPM includes additional quantities of bid items plus alternative bid items to complete the additional recommended well modifications.

A project budget augmentation in the amount of $ 152, 263 is requested as follows:

Descri tion Cost
CPM - Additional Well Modifications 117, 402
LSCE - Additional En ineerin Services 15, 000
Sub- total 132, 402
15% Contin enc 19, 861
TOTAL 152, 263
REASON FOR RECOMMENDATION:

This project is needed to address sanding and other maintenance items for the City' s Well 10, a critical component of the City' s water supply. Staff requests Council to approve Amendment No. 3 with LSCE in the amount of $ 15, 000 and Contract Change Order No. 4 ( CCO# 4) with CPM in the amount of$ 117, 402. In addition, staff requests Council approve a budget amendment allocating $ 152, 263 of the Water Capital Replacement Fund 5600 for the project to complete the Well 10 Testing, Analysis and Modifications, CIP PW 22- 37.

CITY MANAGER' S REPORT PAGE 3
AUGUST 8, 2022 CITY COUNCIL REGULAR MEETING
APPROVE AMENDMENT NO. 3 WITH LSCE, CONTRACT CHANGE ORDER NO. 4 WITH CPM AND BUDGET AMENDMENT FOR WELL 10 TESTING, ANALYSIS AND MODIFICATIONS, CAPITAL IMPROVEMENT PRO7ECT PW 22- 37 FISCAL IMPACT:

The cost for Contract Change Order No. 4 with CPM for the additional well modifications is $ 117, 402 and the cost for Amendment No. 3 for additional engineering services from LSCE is $ 15, 000 for a total cost of $ 152, 263 including a fifteen percent contingency.

Sufficient project funds were not included in the approved budget for Well 10 TAM, CIP PW 22- 37 for additional recommended well modifications and engineering services; therefore, staff is requesting that Council approve a budget amendment allocating $ 152, 263 of the Water Capital Replacement Fund 5600 to the project as follows:

A. Resolution Approving Amendment No. 3 with Luhdorff & Scalmanini Consulting Engineers, Contract Change Order No. 4 with Commercial Pump & Mechanical, Inc., and Related Budget Amendment for the Well 10 Testing, Analysis and Modifications, Capital Improvement Project PW 22- 37
B. Amendment No. 3 with Luhdorff & Scalmanini Consulting Engineers for the Well 10 Testing, Analysis and Modifications, Capital Improvement Project ( CIP) PW 22- 37 C. Contract Change Order No. 4 with Commercial Pump & Mechanical Inc., for the Well 10 Testing, Analysis and Modifications, Capital Improvement Project ( CIP) PW 22- 37
CITY MANAGER' S REPORT PAGE 4
AUGUST 8, 2022 CITY COUNCIL REGULAR MEETING
APPROVE AMENDMENT NO. 3 WITH LSCE, CONTRACT CHANGE ORDER NO. 4 WITH CPM AND BUDGET AMENDMENT FOR WELL 10 TESTING, ANALYSIS AND MODIFICATIONS, CAPITAL IMPROVEMENT PROJECT PW 22- 37 APPROVALS:

R
28 • Zo22
Greg Gibson Date
Senior Civil Engineer
i.

Cari Jame Date
Finance Di e tor
1---- 28 ZC22
Michael King Date
Assistant City Manager
Z ' ZL
Salvador Navarrete Date
City Attorney
i
Z'?' 7.

Steph f Salvatore Date
City Manager
RESOLUTION NO. 22-

A RESOLUTION OF THE CITY COUNCIL OF THE CITY OF LATHROP APPROVING AMENDMENT NO. 3 WITH LUHDORFF & SCALMANINI
CONSULTING ENGINEERS, CONTRACT CHANGE ORDER NO. 4 WITH
COMMERCIAL PUMP & MECHANICAL, INC., AND RELATED BUDGET
AMENDMENT FOR THE WELL 10 TESTING, ANALYSIS AND MODIFICATIONS, CAPITAL IMPROVEMENT PROJECT PW 22- 37
WHEREAS, the Well 10 Testing, Analysis and Modifications ( Well 10 TAM), CIP PW 22- 37 is needed to address sanding and other maintenance items for the City' s Well 10, a critical component of the City' s water supply; and WHEREAS, on November 8, 2021, City Council approved the creation of the Well 10 TAM, CIP PW 22- 37 and Amendment No. 2 with Luhdorff & Scalmanini Consulting Engineers ( LSCE); and
WHEREAS, on February 14, 2022, Council awarded a construction contract to Commercial Pump and Mechanical Inc. ( CPM); and
WHEREAS, the well testing and analysis have been completed and a change order has been issued to CPM to purchase and install a well liner that is recommended to address the well sanding issue; and
WHEREAS, costs have risen due to a number of factors, including review and approval of the well design from the Division of Drinking Water and the San Joaquin County Environmental Health Department, increased costs for materials, and the need for additional engineering services from LSCE; and WHEREAS; additional modifications have also been recommended including a new pump, lineshaft and mechanical seal that exceed the current project budget; and
WHEREAS, the cost for Contract Change Order No. 4 ( CCO # 4) with CPM for the additional well modifications is $ 117, 402 and the cost for Amendment No. 3 for additional engineering services from LSCE is $ 15, 000 for a total cost of $ 152, 263 including a fifteen percent contingency; and
WHEREAS, CCO # 4 with CPM includes additional quantities of bid items plus alternative bid items to complete the additional recommended well modifications; and
WHEREAS, sufficient project funds were not included in the adopted Fiscal Year ( FY) 22/ 23 Budget for the additional recommended well modification and engineering services; therefore, staff is requesting that Council approve a budget amendment allocating $ 152, 263 of the Water Capital Replacement Fund 5600 to Well 10 Testing, Analysis and Modifications, CIP PW 22- 37 as follows:

Increase Transfers Out
5600- 99- 00- 990- 90- 10 152, 263
Increase Transfers In
5690- 99- 00- 393- 00- 00 PW 22- 37 152, 263
Increase Expenditures
5690- 80- 00- 420- 12- 00 PW 22- 37 152, 263
NOW, THEREFORE, BE IT RESOLVED, that the City Council of the City of Lathrop does hereby approve Amendment No. 3 with Luhdorff & Scalmanini Consulting Engineers for additional engineering services for the Well 10 Testing, Analysis and Modifications CIP PW 22- 37 in the amount of $ 15, 000; and BE IT FURTHER RESOLVED, that the City Council of the City of Lathrop does hereby approve Contract Change Order No. 4 with Commercial Pump and Mechanical Inc. for additional well modifications for the Well 10 Testing, Analysis and Modifications CIP PW 22- 37 in the amount of $ 117, 402; and BE IT FURTHER RESOLVED, a budget amendment allocating $ 152, 263 of the Water Capital Replacement Fund 5600 to the project is approved as follows:

AYES:

NOES:

ABSTAIN:

ABSENT:

Sonny Dhaliwal, Mayor
ATTEST: APPROVED AS TO FORM:

Teresa Vargas, City Clerk Salvador Navarrete, City Attorney

ATTACHMENT B
AMENDMENT NO. 3

TO THE AGREEMENT BETWEEN THE CITY OF LATHROP AND

LUHDORFF & SCALMANINI CONSULTING ENGINEERS
FOR WELL NO. 10 TESTING, ANALYSIS AND MODIFICATIONS, CIP PW 22- 37 THIS AMENDMENT ( hereinafter " AMENDMENT NO. 3") to the agreement between Luhdorff & Scalmanini Consulting Engineers and the City of Lathrop dated May 25, 2021, hereinafter " AGREEMENT") dated for convenience this 8th day of August 2022, is by and between Luhdorff & Scalmanini Consulting Engineers (" CONSULTANT") and the City of Lathrop, a California municipal corporation (" CITY");
RECITALS:

WHEREAS, CONSULTANT is specially trained, experienced, and competent to perform Professional Engineering Consulting Services for the City of Lathrop, which are required by this agreement; and
WHEREAS, CITY selected the CONSULTANT pursuant to said qualifications; and WHEREAS, on May 25, 2021, CONSULTANT and CITY entered into an AGREEMENT to perform the Professional Engineering Consulting Services for Well Testing and Analysis for Well No. 10 Sand Production not to exceed $ 7, 000. 00 ; and WHEREAS, on August 11, 2021, CONSULTANT and CITY entered into AMENDMENT No. 1 for Well Testing and Analysis for We l 10 Sand Production for$ 4, 450. 24; and WHEREAS, on November 8, 2021, CONSULTANT and CITY entered into AMENDMENT No. 2 for Well 10 Testing, Analysis and Modifications, CIP PW 22- 37 for$ 25, 500; and WHEREAS, CONSULTANT provided scope of work attached hereto as Exhibit " A" for Amendment No. 3 for Well 10 Testing, Analysis and Modifications, CIP PW 22- 37; and NOW, THEREFORE, CONSULTANT and the CITY agree as follows:

AMENDMENT NO. 3 TO AGREEMENT
1) Scope of Service. Section ( 1) of the AGREEMENT for Consulting is hereby amended to add the following:

CONSULTANT agrees to perform Well 10 Testing, Analysis and Modifications, CIP PW 22- 37 in accordance with the scope of work and fee proposal provided by CONSULTANT, attached hereto as Exhibit " A" and incorporated herein by reference. CONSULTANT agrees to diligently perform these services in accordance with the upmost standards of its profession and to CITY' S satisfaction.
2) Compensation. Section ( 2) of the AGREEMENT for Consulting Services is hereby amended as follows:

Page 1 of 3 ends

CITY OF LATHROP— LUHDORFF& SCALMANINI CONSULTING ENGINEERS AMENDMENT NO. 3 FOR WELL 10 TESTING, ANALYSIS AND MODIFICATION, CIP PW 22- 37 City hereby agrees to pay CONSULTANT a sum not to exceed $ 15, 000. 00 for services set forth in Exhibit " A" of this Amendment No. 2, with a total sum not to exceed of 51, 950. 24 ($ 7, 000 for the original AGREEMENT, $ 4, 450. 24 for AMENDMENT NO. 1, 25, 500 for AMENDMENT NO. 2, and $ 15, 000 for AMENDMENT NO. 3). CONSULTANT shall be paid within thirty( 30) days of receipt of billings containing all information contained in Paragraph 5 of the original AGREEMENT. Compensation for any task must be equal to or less than the percentage of task complete. In no event shall CONSULTANT be entitled to compensation for work not included in the original scope of work and this AMENDMENT unless a written change order or authorization describing the extra work and payment terms has been executed by CITY' S Authorized Representative prior to the commencement of the work. Payment is made based on a time and materials basis. 3) Effective Date and Term
The effective date of Amendment No. 3 is August 8, 2022, and it shall terminate no later than June 30, 2023. All other terms of the original AGREEMENT shall remain in full force and effect.
4) Applicabilitv to Oriqinal Consultant AGREEMENT
All terms and conditions set forth in the AGREEMENT dated May 25, 2021 are still in effect and are incorporated by reference herein and said AGREEMENT is incorporated by reference herein.
5) Siqnatures
The individuals executing this AMENDMENT NO. 3 represent and warrant that they have the right, power, legal capacity, and authority to enter into and to execute this AMENDMENT NO. 3 on behalf of the respective legal entities of the CONSULTANT and the CITY. This agreement shall inure to the benefit of and be binding upon the parties hereto and their respective successors and assigns.

Page 2 of 3 ends

CITY OF LATHROP— LUHDORFF & SCALMANINI CONSULTING ENGINEERS AMENDMENT NO. 3 FOR WELL 10 TESTING, ANALYSIS AND MODIFICATION, CIP PW 22- 37 Approved as to Form: City of Lathrop
City Attorney
Z`j•2a.. Z.

Salvador Navarrete Date
Recommended for Approval: City of Lathrop
Assistant City Manager
Michael King Date
Approved by: City of Lathrop
390 Towne Centre Drive
Lathrop, CA 95330
Stephen J. Salvatore Date
City Manager
Consultant: Luhdorff & Scalmanini Consulting Engineers
500 First St
Woodland, CA 95695
Federal ID # 20- 1984423
Business License # 20853
Signature Date
Print Name and Title

Page 3 of 3 ends

EXHIBIT A
Luhdorff Scalmanini
Consulting Engineers
July 12, 2022
LSCE File No. 21- 2- 131
Mr. Greg Gibson
City of Lathrop
Public Works Department
390 Town Center Drive
Lathrop, CA 95330
SUBJECT: City of Lathrop Well 10 Capital Improvement Project, Testing, Analysis and Modifications — Budget Increase Request
Dear Mr. Gibson:

Per the City' s request, Luhdorff& Scalmanini Consulting Engineers ( LSCE) is pleased to submit this request for a budget increase to complete the Well 10 Improvement Project. LSCE has assisted the City with investigating the Well 10 for sand related issues. The original contract was executed on December 15, 2021 and it included four tasks, described as follows:

Task 1: Review of the City' s Front- End Specifications ( completed) Task 2: Development of Work Plan and Technical Specifications ( completed) Task 3: Bidding Assistance ( completed)
Task 4 Oversite of the Well Rehab and Pump Replacement. ( partially completed) LSCE has nearfy completed the technical engineering aspects of the Project ( scoped) and assisted the City with out of scope items such as reviewing and providing input to the City regarding the Contractor' s invoices and change order requests, and assisted the City with request to City Council for approval of additional funds.

The Project diverged from the original schedule that intended for completing the well rehab, modification, and pump replacement this summer. The time to finalize the well modifications took longer than anticipated for several reason: the well investigation needed a second dynamic video survey to determine the source of sand; time for review and approval of the well modification design from San Joaquin County ( County) and Division of Drinking Water ( DDW); and procurement of the materials by the Contractor. The City decided to reinstall the existing pumping equipment to provide the City with a reliable drinking water source for the summer.

Finalizing the well modification design and assisting with the City with the County and DDW has exhausted LSCE' s approved budget. The requested budget increase shall cover LSCE' s time going forward and any time that was over LSCE' s approved budget.

SDQ First Street 530) 6S9- D109
Waadland, CA 95695 www. lsce.com
MR. GIBSON
JULY 12, 2022 CITY OF LATHROP- WELL 1 O
PAGE Z

SCOPE OF WORK
Engineering Services
Per the City' s direction, LSCE will provide technical engineering services for the City. This would include:

I. Review of the Contractor' s submittals
II. Review of the Contractor' s request for information ( RFI), III. Oversight of the well liner installation
IV. Oversight of the well development pumping
V. Oversight of the well aquifer testing
VI. Development of the pump design for the replacement pump VII. Oversight of the replacement pump installation
VIII. Oversight of the pump performance testing
We propose a budget increase request of$ 15, 000. We assume the City will complete the construction management and therefore the scope of this budget increase request does not include any construction management which includes but not limited to review of the Contractor' s invoices, change order requests, nor the daily correspondences with the Contractor.

Thank you for giving us the opportunity to prepare this budget increase request for the scoped items of work.

Sincerely,

LUHDORFF& SCALMANINI,

CONSULTING ENGINEERS
I
Eddy Teasdale, P. G., C. Hg. Philip L'Amoreaux, P. E.

Supervising Hydrogeologist Project Engineer
LSCE

ATTACHMENT C
CHANGE ORDER NO. 4
Well 10 Testing, Analysis and Modifications,
CIP PW 22- 37 City of Lathrop
CONTRACT CHANGE ORDER NO. 4
WELL 10 TESTING, ANALYSIS AND MODIFICATIONS, CIP PW 22- 37 Contractor: Commercial Pump & Mechanical, Inc.

Address: P. O. BOX 7947
Chico, CA 95927
Change Order Date: August 8, 2022
Notice to Proceed Date: March 3, 2022
Contract Execution Date: February 14, 2022
This contract change order augments or changes the following:
1) ADDITION TO CONTRACT — Additional of Base Bid Items # 2, # 9, # 10, # 13, and Alternate Bid Items # 17, # 18, # 19, # 21, a level transducer, and the price change of the liner material as described below and pursuant to the Contract Specifications.
2) CHANGE IN SPECIFICATIONS — Frank Vallejo, City of Lathrop shall be the designated CITY'S REPRESENTATIVE for the project, replacing Luhdorff & Scalmanini who will continue to provide engineering services to support the project as the designated ENGINEER for the project.

Pursuant to the provisions of the Contract Specifications and proposal attached as Exhibit A, you are hereby directed to make the herein described changes to the plans and specifications, and scope of work contracted for within the terms of the agreement between the City of Lathrop and Commercial Pump & Mechanical, Inc. dated February 14, 2022.

I. CHANGES IN THE SPECIFICATIONS
A. First sentence of Section 00800 - SUPPLEMENTARY CONDITIONS, SC- 2

DUTIES, RESPONSIBILITES AND LIMITATIONS OF AUTHORITY OF CITY' S REPRESENTATIVE is modified as follows: Philip L' Amoreaux, PE, Project Engineer or Eddy Teasdale, PG, CH. G from Luhdorff & Scalmanini Consulting Engineers shall be the designated ENGINEER and Frank Valleio, Utility Operations Superintendent for the City of Lathrop shall be the designated CITY' S REPRESENTATIVE for the project.

II. ADDITIONS TO CONTRACT
NO. DESCRIPTION QTY UNIT UNIT TOTAL
PRICE
1 Additional Base Bid Item # 2 — Permanent
1 LS $ 12, 040. 00 $ 12, 040. 00
Pump Removal and Replacement
2 Additional Base Bid Item # 9 — Disinfection
1 LS 2, 000. 00 $ 2, 000. 00
with Tremie Pipe
CHANGE ORDER NO. 4
Well 10 Testing, Analysis and Modifications,
CIP PW 22- 37 City of Lathrop
3 Additional Base Bid Item# 10— Chlorination
1 LS 1, 000. 00 $ 1, 000.00
and Dechlorination
Additional Base Bid Item # 13 — Lineshaft,
4 Bearings and Retainers + NSF 61 1 LS $ 23, 936. 00 $ 23, 936. 00 Certification
5 Add Alt. Bid Item # 17 — Post Modification
1 LS $ 23, 590. 00 $ 23, 590. 00
Well Development
6 Add Alt. Bid Item # 18— Post Modification
1 LS 6, 500. 00 $ 6, 500. 00
Well Aquifer Testing
7 Add Alt. Bid Item # 19 — Bowl Assembly 1 LS $ 36, 665. 00 $ 36, 665. 00 8 Add Alt. Bid Item # 21 — Mechanical Seal 1 LS 4, 142. 00 $ 4, 142. 00 9 Add Water Level Transducer 1 LS 1, 244. 00 $ 1, 244. 00 Price Change of 14" HSLA Spiral Wound
1 Pipe, 14" x 123/a" Reducer, 123/4" HSLA to
1 LS 6, 285. 00 $ 6, 285. 00
304SS Dielectric Coupling including sales
tax
TOTAL ADDITIONAL COST FROM THIS CHANGE ORDER NO. 4 117, 402. 00 TOTAL ADDITIONAL COST FROM CHANGE ORDER NO. 3 88, 778. 18 TOTAL ADDITIONAL COST FROM CHANGE ORDER NO. 2 3, 384. 00 TOTAL ADDITIONAL COST FROM CHANGE ORDER NO. 1 4, 870. 00 ORIGINAL CONTRACT AMOUNT 87, 664. 00
REVISED CONTRACT AMOUNT AFTER CHANGE ORDER NO. 4 302, 098. 18

END OF CHANGES)

DESCRIPTION OF WORK
See additions to contract. The contractor shall provide all labor, material, equipment and shall perform all incidental tasks as necessary to complete the change order.

TIME OF COMPLETION
The extra work will increase the time frame of the original contract by 0 working days, and is to be completed concurrent with other various items of work.

RELEASE AND WAIVER
Acceptance of this Contract Change Order constitutes a full and final resolution of all pending disputes between City and Contractor regarding scope of work and payment for work. Contractor accepts this Contract Change Order as full payment for all work performed to date and hereafter to be performed, up to and including Contract Change Order No. 4.

CHANGE ORDER NO. 4
Well 10 Testing, Analysis and Modifications,
CIP PW 22- 37 City of Lathrop
Contractor releases and discharges City from any and all claims, demands, damages, actions and causes of actions and causes of action for injuries, damages or losses, whether known or unknown, foreseen or unforeseen, arising directly from Contractor' s work on this contract.

Contractor expressly waives the provisions of California Civil Code, Section 1542, which reads as follows:

A general release does not extend fo claims which the Creditor does not know or suspect to exist in his favor at time of executing fhe release, which if known by him must have materially affected his settlement with the debfor.

END OF SECTION)
CHANGE ORDER NO. 4
Well 10 Testing, Analysis and Modifications,
CIP PW 22- 37 City of Lathrop
Approved As
To Form: Z-- 2A ZZSalvador Navarrete Date
City Attorney
City of Lathrop
Recommended
By:

Michael King Date
Assistant City Manager
City of Lathrop
Approved By:

Stephen J. Salvatore Date
City Manager
City of Lathrop
Accepted By
Contractor:

Commercial Pump & Mechanical, Inc. Date
Print Name and Title

EXHIBIT A
C C l.

August 3, 2022
Frank Vallejo
Utility Operations Superintendent
City of Lathrop
fvallejo cr, ci. lathrop. ca. us
RE: Well 10 Testing, Analysis, and Modifications, CIP# 22- 37 Change Order# 04 Request
Item # 1 — Add Base Bid Item# 2— Permanent Pump
Removal and Replacement 12, 040. 00
Item# 2— Add Base Bid Item# 9— Disinfection with
Tremie Pipe 2, 000. 00
Item# 3— Add Base Bid Item# 10— Chlorination and
Dechlorination 1, 000.00
Item # 4— Add Base Bid Item# 13— Lineshaft, Bearings,
and Retainers+ NSF 61 Certification 23, 936. 00
Item# 5 — Add Alt. Bid Item # 17— Post Modification Well Development 23, 590. 00
Item# 6— Add Alt. Bid Item# 18— Post Modification Well
Aquifer Testing 6, 500. 00
Continued -
11254 Midway, Chico CA 95928 530. 899. 1583v 530. 899.7225f www. cpmpump. com Well 10 Testing, Analysis, and Modifications, CIP# 22- 37 Page 2 Change Order# 04 Request
Item# 7— Add Alt. Bid Item# 19— Bowl Assembly 36, 665. 00 Item # 8— Add Alt. Bid Item# 21 — Mechanical Seal 4, 142. 00 Item# 9— Add Water Level Transducer 1, 244. 00
Item # 10— 14" HSLA Spiral Wound Pipe, 14" x 12 3/ 4" Reducer 12 3/ 0" HSLA to 304SS Dielectric Coupling, Tax
Adder for Cost Escalation 6, 285. 00
Total Price 117, 402. 00
Price is firm for Acceptance until September 9, 2022
Exception— Item # 4 Lineshaft, Bearings, and Retainers price good until August 12, 2022 Exception— Item# 7— Bowl Assembly— Will be requoted at time of order, which will be after the Liner Installation and Ayuifer Testing
y'
Steven L. Greenwood
Commercial Pump & Mechanical, Inc.
11254 Midway, Chico CA 95928 530. 899. 1583v 530. 899. 7225f ( www.cpmpump. com

Lathrop City CouncilAugust 8, 2022

Lathrop City Council
August 8, 2022