Finance Committee

November 12, 2019 Page 2
20191112 Budget Increase Letter.docx

Preparing modified base grades based on elevated groundwater readings;
Meeting with the NHDES regarding Groundwater Demonstration and revised grading;

Preparing calculations, redesigning leachate collection system components, and
compiling a Type II permit modification application at the request of the NHDES based
on the modified Phase III grading;

Updating project quantities for the selected contractor;

SANBORN ||| HEAD

20 Foundry Street
Building Trust. Engineering Success. Concord, NH 03301
Mr. Jeff Lafleur November 12, 2019
Superintendent File No. 3066.18
Nashua Division of Public Works, Solid Waste Department
840 West Hollis Street Sent via email
Nashua, NH 03062

Re: Change Order Request
Construction Quality Assurance Services — Phase III
City of Nashua Four Hills Landfill
Nashua, New Hampshire

Dear Jeff:

To:

From:

Re:

Attachment:

A. Motion:

Discussion:

City of Nashua, Public Works Division

Board of Public Works Meeting Date: December 19, 2019

Jeff Lafleur, Superintendent
Solid Waste Department

Change Order #2 to contract with Charter Contracting Company, LLC.
Change Order Request

B\ THE CITY OF NASHUA “the Gate Cy

Administrative Services

Purchasing Department

January 9, 2020
Memo #20-071

TO: MAYOR DONCHESS
FINANCE COMMITTEE

SUBJECT: CONTRACT FOR PHASE II] LANDFILL - CONSTRUCTION CHANGE ORDER #2
(VALUE: $191,271) .
DEPARTMENT: 168 SOLID WASTE; FUND: SOLID WASTE

Please see the attached communication from Jeff Lafleur, Solid Waste Department Superintendent dated
December 19, 2019 for the information related to this contract.

Pretminary Project Sovpe ite - entar La ncho.

November 12, 2019 Page 4
20191112 Budget Increase Letter.docx

Thank you for the opportunity to be of continued service to the City. We look forward to
working with you on this project. Please contact us should you require additional
information.

Very truly yours,
SANBORN, HEAD & ASSOCIATES, INC.

VYuurd hP>rhor as; Sovihosin.

Edward A. Galvin, P.E. Eric S. Steinhauser, P.E., CPESC, CPSWQ
Project Manager Senior Vice President and Principal
EAG/ESS:eag

Enclosure: Latest contractor construction schedule

November 12, 2019
20191112 Budget Increase Letter.docx

Page 3

w Update the facility’s operating, closure, and financial assurance plans to satisfy permit
conditions; and

a Prepare the CQA Report and Record Drawings for submittal to the NHDES.

Budget Adjustment

November 12, 2019 Page 2
20191112 Budget increase Letter.docx

Preparing modified base grades based on elevated groundwater readings;
Meeting with the NHDES regarding Groundwater Demonstration and revised grading;

Preparing calculations, redesigning leachate collection system components, and
compiling a Type II permit modification application at the request of the NHDES based
on the modified Phase III grading;

Updating project quantities for the selected contractor;

SANBORN ||

j
| Hi EAD 20 Foundry Street
Building Trust. Engineering Success. Concord, NH 03301
Mr. Jeff Lafleur November 12, 2019
Superintendent File No. 3066.18
Nashua Division of Public Works, Solid Waste Department
840 West Hollis Street Sent via email

Nashua, NH 03062

Re: Change Order Request
Construction Quality Assurance Services — Phase III
City of Nashua Four Hills Landfill
Nashua, New Hampshire

Dear Jeff:

IN WITNESS WHEREOF, the parties hereto have made and executed this AMENDMENT to said
AGREEMENT as of the day and year first above written.

ENGINEER:
SANBORN HEAD & ASSOCIATES

By:

Sanborn Head & Associates (Authorized Representative)

Date:

OWNER:
CITY OF NASHUA

By:

Mayor James W. Donchess, Mayor

Date:

Amendment #1 2 of 2
Phase III Landftll Expansion