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From:

Re:

A. Motion:

Attachments:

Discussion:

City of Nashua, Public Works Division

Board of Public Works Meeting Date: February 27, 2020

Jeff Lafleur, Superintendent
Solid Waste Department

2020 Landfill Gas Collection and Control System Expansion Change Order #2

To approve Change Order #2 to the contract with SCS Field Services of Reston, VA
in the amount of $287,565 for the expansion of the Four Hills Landfill Gas
Collection and Control System (GCCS). Funding will be through Department: 168
Solid Waste; Fund: Bond; Activity: Landfill Gas Expansion FY20.

Schedule of Values

The City issued Change Order #1 to SCS Field Services to repair a gas header that
has failed. While SCS is onsite to do the repairs this month the Solid Waste
Department and Sanborn Head decided to have them install more wells and to make
additional repairs to the Landfill Gas Collection and Control System (GCCS). The
additional GCCS work was going to be completed this year to ensure the system is
capturing emissions and controlling odors. By doing the work now, while SCS is
already onsite, the Solid Waste Department is saving the City future mobilization
charges.

The Solid Waste Department’s engineering firm, Sanbomm Head and Associates, Inc.
(SHA) prepared the scope of work that will be performed in Change Order #2. This
work is required to control odors, mitigate fugitive methane surface emissions and
comply with the NHDES approved Operating Plan — Phase I] Secure Landfill
Expansion and the Landfill Gas Collection System Enhanced Monitoring
Protocol/Standard Operating Procedures (EMP/SOP).

CHANGE ORDER

No.2
PROJECT: 2019 Landfill Gas System Expansion
OWNER’S CONTRACT NO: IFB0593-080919
EXECUTED CONTRACT DATE: September 19, 2019
DATE OF ISSUANCE: Upon City Approval EFFECTIVE DATE: Upon City Approval
OWNER: City of Nashua, NH

OWNER’s Purchase Order NO.: 152614
CONTRACTOR: SCS Field Services

ENGINEER: Sanborn Head & Associates

You are directed to make the following changes in the Contract Documents:

Description: For the replacement of a vacuum header.

Justification: During the construction of Phase I/Il for the Landfill Gas Collection System, which
included new horizontal and vertical gas wells, one of the main vacuum headers in the Landfill began
showing signs of failure (e.g. loss of vacuum to several gas collectors). The Engineer, Sanborn Head
Associates, has prepared a construction design for the replacement of the vacuum header.

Attachment(s): Sanborn Head Associates Schedule of Values

Change Order # 2 1 of 2
IFB0593-080919

2019 Landfill Gas Collection and Control System Expansion

Summary

CHANGE IN CONTRACT PRICE:
Original Contract Price

$323,470

CHANGE IN CONTRACT TIMES:
Original Contract Times

Final completion: December 18, 2019
Ready for final payment: January 17, 2020

Net changes from previous Change Orders

$135,140

Net change from previous Change Orders

Final completion: May 1, 2020
Ready for final payment: May 31, 2020

Contract Price prior to this Change Order

$458,610

Contract Times prior to this Change Order

Final completion: December 18, 2019
Ready for final payment: January 17, 2020

Net Increase-deerease} of this Change Order

$287,565

Net Increase (decrease} of this Change Order

Final completion: June 1, 2020
Ready for final payment: June 30, 2020

Contract Price with all approved Change
Orders

Contract Times with all approved Change Orders

Final completion: June 1, 2020

$746,175 Ready for final payment: June 30, 2020
RECOMMENDED: ACCEPTED: APPROVED:
By: By: By:
Sanborn Head & Associates SCS Field Services Mayor Jim Donchess
Engineer Contractor Owner
(Authorized Signature) (Authorized Signature) (Authorized Signature)
Date: Date: Date:
Change Order # 2 2 of 2

IFB0593-080919

2019 Landfill Gas Collection and Control System Expansion

Schedule of Values
2019 Landfill Gas System Expansion - Change Order

Four Hills Landfill
Nashua, New Hampshire
Prepared February 3, 2020

Item Description Quantity Bid Unit Cost | Extended
No. (w/ units) ($/units) Prices ($)
1 |Mobilization/Demobilization 1 LS | $24,000 LS $24,000
2 |Pipe Trench :
a, Single Pipe - 2" SDR 9 HDPE Compressed Air Pipe 630 LF | 345.00 LF $28,350
b. Single Pipe - 3°@ SDR 11 HDPE Condensate Main 115 LF | $47.00 LF $5,405
c. Single Pipe - Perforated Pipe Collection Trench 1,665 LF | $88,006 LF $91,875
d. Single Pipe - 4"@ Solid SDR 17 HDPE Pipe Trench 185 LF $86.00 LF $15,910
e, Single Pipe - 6"@ Solid SDR 17 HDPE Pipe Trench 545 LF $84.00 LF $45,780
f, Dual Pipe Trench -2"4 SDR 9 HDPE Compressed Air Pipe
& 3°A SDR 11 HDPE Condensate Main 125 LF | g81.00} LF $10,125
pe, Three-Pipe Trench - 2" SDR 9 HDPE Compressed Air
Pipe, 3" SDR 11 HDPE Condensate Main, and 6"9 Solid 135 LF | $52.00 | Er } $7,020

SDR 17 HDPE Gas Conveyance Pipe
h, Three-Pipe Trench - 2"@ SDR 9 HDPE Compressed Air
Pipe, 3"@ SDR 11 HDPE Condensate Main, and 4"6 500 LF | $72.00 | LF | $36,000
perforated SDR 17 HDPE Pipe in crushed stone
j. Three-Pipe Trench - 12"8 SDR 17 HDPE Gas Conveyance
Pipe, 3"@ SDR 11 HDPE Condensate Main, and 4"@ 250 LF | $88.00 | LF | $22,000
perforated SDR 17 HDPE Pipe in crushed stone
j. Four-Pipe Section - 12"@ SDR 217 HDPE Gas Conveyance
Pipe, 3"9 SDR 11 HDPE Condensate Main, 2"@ SDR 9
HDPE Compressed Air Pipe, and 4" perforated SDR 17 370 LF | $92.00 | LF | $34,040
HDPE Pipe in crushed stone

k. Condensate Main Cleanouts 2 EA | $4,300.00 EA | $2,600
1. Compressed Air Pipe Isolation Valves 3 EA | 3890.00 EA | $2,400
m. Cut & Connect to Existing 12" HDPE Pipe 1 EA | $2,000.00 | EA | $2,000
3__|Wellhead Assemblies (8 new, reuse S existing) 13 EA | 3700.00 EA | 39,100
4 |Remote Weil Connection 1 EA | $3,200.00 | EA $3,200
5 {Bentonite Seals 20 EA $2,900.00 | EA | 358,c00
6 |Decommission Existing Gas Collection Trenches 5 EA $1,000.00} FA | $5,000
7 |Condensate Trap Drain Repair i LS $5,200.00] LS | 35,200
8 |Survey 1 LS $15,000.00] LS 515,000
Change Order # 1 and #2 Total] $422,705
Less Previously Approved Change Order #1] ($135,140)
| Change Order #2 Total] $287,565
Notes:

1, Quantities were obtained from drawings titled "2019 Landfill Gas System Expansion - Change Order," dated
February 2020.
2. All pipe lengths in the table above are plan view lengths (2D) and do not account for slope.

UALFG Colicction System\2019 LPG System Expansion\Change Order), ;
20200203 Schedule of Valtes.xtsx Sanborn Head & Associates, Inc.

THE CITY OF NASHUA “the Cate City’

Administrative Services

Purchasing Department

February 27, 2020
Memo #20-090

TO: MAYOR DONCHESS
FINANCE COMMITTEE

SUBJECT: CONTRACT FOR SINGLE STREAM RECYCLING — AMENDMENT #2 —- TWO YEAR
EXTENSION (VALUE: NOT-TO-EXCEED $400,000)
DEPARTMENT: 168 SOLID WASTE; FUND: SOLID WASTE

Please see the attached communication from Jeff Lafleur, Solid Waste Department Superintendent dated
February 27, 2020 for the information related to this contract.

Pursuant to § 5-78 Major purchases (greater than $10,000) A. All supplies and contractual services,
except as otherwise provided herein, when the estimated cost thereof shall exceed $10,000 shall be
purchased by formal, written contract from the lowest responsible bidder, after due notice inviting bids.

The Solid Waste Department Superintendent, the Board of Public Works (February 27, 2020 meeting)
and the Purchasing Department recommend the award of this contract amendment #2 in an amount not
to exceed $400,000 to Casella Recycling LLC of Charlestown, MA.

Re CL)

an Kooken
Purchasing Manager

Ce: J Lafleur L Fautuex

229 Main Street » Nashua, New Hampshire 03061 » Phone (603) 589-3330 » Fax (603) 589-3233 |

4 FITZEMEYER ,
== g JOC Project Approach

&} COMMISSIONING SERVICE INTEGRATION

Commissioning should not be merely a one-line item in a construction schedule. As clearly stated in the scope of
work, there are numerous activities associated with the execution of commissioning services. Construction phase
commissioning activities should be clearly itemized within the construction schedule as soon as a formalized
schedule is developed. Lines items should include:

* Testing and balancing broken out on a per floor or per equipment type basis.

* Point-to-point checkout on a per floor or per equipment type basis.

* Functional testing broken out on a per floor, phase or equipment type basis. This breakout will include duration
of testing

* Training duration broken out on a per trade basis.

«+ Line item, including estimated duration for non-conformance item closeout.

ee TEAM BUILDING

OeSa
Design team - Fitzemeyer & Tocci is a full-service engineering consulting firm with a primary focus on design.
Because the firm is accustomed to working with commissioning agents on design projects, our dedicated
commissioning team is constantly reviewing the commissioning approach with our design groups to ensure the
delivery of our commissioning service is collaborative with designers. This evaluation activity has resulted in a
design review processes that numerous third-party design engineers have provided very positive feedback on.

Construction team -The commissioning team at F&T is comprised of engineers with extensive field backgrounds,
specifically focused on operations. Much of our team has direct, hands on experience in the maintenance and
troubleshooting of mechanical and electrical equipment. This hands-on experience is beneficial in developing a
level of trust with contractors and construction teams. Our team is rarely in the position of proposing solutions
that we do not have direct experience with. The nature of commissioning requires us to be involved in contentious
moments, but we are the first to promote contractors and team members that are collaborative and producing at a
high level.

Sad COMMISSIONING EFFORT ALLOCATION
\@7

Meetings — Meeting quantity is developed based up the duration of construction. Typically commissioning
meetings are conducted monthly through the first 75% of construction. These meetings increase in frequency
to bi-weekly and weekly through the final weeks of construction, when functional testing and non-conformance
resolution discussions are required.

Functional testing — Testing duration is based upon equipment types and counts. The equipment at the heart of
distribution systems including, but not limited to boilers, chillers, and air handling units typically require a full day of
testing per system or air handling unit. Unitary equipment such as fan coil units, variable air volume terminal units
or heat pumps are typically tested in groups of 10-15 units per full day of testing.

MECHANICAL | ELECTRICAL | IT | COMMISSIONING ENGINEERS

To:

From:

Re:

B. Motion:

Attachment:

Discussion:

City of Nashua, Public Works Division

Board of Public Works Meeting Date: February 27, 2020
Jeff Lafleur, Superintendent of Solid Waste
Single Stream Recycling Contract

To approve Amendment #2 for a two year extension to the contract with Casella
Recycling LLC of Charlestown, MA for the transportation and processing of the
City’s single stream recyclables for an amount not to exceed $400,000 annually.
Funding through Department 168 Solid Waste; Fund: Solid Waste; Account
Classification: 55 Other Contracted Services.

Casella Recycling Agreement Amendment #2

The recycling commodities markets continue to struggle with depressed prices,

The City’s contract for recycling with Casella ends on June 30, 2020 and the City of
Nashua needs to secure a vendor. The Solid Waste Superintendent, after looking at
other community’s costs for recycling, has determined that remaining with Casella
is the best option available. Continuing with Casella allows the Solid Waste
Department to keep a more favorable cost structure that would otherwise not be
available.

The Solid Waste Department has worked with Casella Recycling for six years. Their
strength in today’s difficult markets and their willingness to work with the City of
Nashua to keep our costs down leads us to recommend that the contract for single
stream recycling with Casella should be extended for the next two years in an
amount not to exceed $400,000 annually pending budget approval.

AMENDMENT No. 2
TO
CONTRACT
FOR INDEPENDENT CONTRACTOR

SINGLE STREAM RECYCLABLE MATERIAL PROCESSING
RFP1058-022318

BETWEEN
CITY OF NASHUA
AND
CASELLA RECYCLING, LLC

This AMENDMENT No. 2, dated is attached to and made part of the CONTRACT
FOR INDEPENDENT CONTRACTOR between the City of Nashua, New Hampshire and Casella
Recycling, LLC for Single Stream Recyclable Material Processing (RFP1058-022318) dated
September 10, 2018 (“AGREEMENT”).

WHEREAS, Section 28 of the AGREEMENT’s General Terms and Conditions allows for written
amendments to the Agreement when signed by both parties;

WHEREAS, both parties wish to extend the term and renew the pricing for an additional two (2) years.

NOW, therefore, in consideration of the mutual covenants contained herein, the parties hereby mutually
agree as follows:

1. That the period of performance for this AMENDMENT No. 2, shall be for two (2) years
commencing on July 1, 2020 and terminating on June 30, 2022. Each year is subject to annual
budget appropriations and at the City of Nashua's sole discretion. A separate/amended purchase
order shail be issued for each year of the contract.

2.
A. INDEPENDENT CONTRACTOR agrees to perform the work, under this
AMENDMENT No. 2, in accordance with pricing formula, attached; and

B. that the City of Nashua will accept glass at $16.00/ton and a minimum of 1,000 tons per
month, for a total cost not to exceed

FOUR HUNDRED THOUSAND DOLLARS (S$ 460,000.00) annually, for the term of
AMENDMENT No. 2.

3. All other terms and conditions of the AGREEMENT shall remain in force until the
completion of the work authorized under this AMENDMENT No.2.

SINGLE STREAM RECYCLABLE MATERIAL PROCESSING 1
CASELLA RECYCLING, LLC

Amendment #2

AMENDMENT No. 2
TO
CONTRACT
FOR INDEPENDENT CONTRACTOR

SINGLE STREAM RECYCLABLE MATERIAL PROCESSING
RFP1058-022318

BETWEEN
CITY OF NASHUA
AND
CASELLA RECYCLING, LLC

4. This AMENDMENT No. 2, with attachments, along with the AGREEMENT,
CHANGE ORDER No. 1 dated April 12, 2019, and AMENDMENT No.1 dated June 11,
2019 constitutes the entire AGREEMENT and understanding between the parties and
supersedes all prior agreements and understandings relating hereto.

OWNER: INDEPENDENT CONTRACTOR:

City of Nashua, NH (signature) Casella Recycling, LLC. (signature)

James Donchess, Mayor
(Printed Name and Title) (Printed Name and Title)

Date Date

SINGLE STREAM RECYCLABLE MATERIAL PROCESSING 2
CASELLA RECYCLING, LLC

Amendment #2

CITY OF NASHUA DIVISION OF PUBLIC WORKS SOLID WASTE DEPARTMENT

REQUEST FOR PROPOSALS
SINGLE STREAM RECYCLABLE MATERIALS PROCESSING
RFP 1058-022318

ATTACHMENT B - PROPOSAL COSTS

(estimated anount # londs: 300}

CEILING PRICE per ton ie
at 4
i aa of
Highest cust per ton that could be charged “FP “ys ve = fton
for processing recyclabies from City =
{estiniated nnnuni tonnage: 5000-5500 tons} YE
a a
TRANSPORTATION COST per load ff opera: finad

Name of Hauling company, if different from vendor

Formula that would reduce Processing Costs ar
produce revenue sharing

List indexes used to calculate recycling costs

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