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Nashua Waste Water Treatment Facility — Energy Recovery Generator Upgrade
Engineering Design Services

2.7. Prepare electrical control scheme design including load sharing mode of
operation among engines generator and utility and synchronization to the
utility.

2.8. Develop control system architecture.

2.9. Provide technical input to National Grid, the local Electrical Utility,
Interconnection application. Interconnection application will be the
responsibility of City of Nashua.

2.10. Develop Cogen Reciprocating Engine bid specification.

2.11.Develop Main Switchgear bid specification.

2.12.Attend one (1) review meeting with local utility, hosted by City of Nashua, as
part of the Interconnection application.

2.13.Attend two (2) design progress meetings with the City of Nashua project team.
2.14.Attend one (1) post bid meeting with cogeneration engine vendor.
2.15.Prepare cogeneration engine bid comparison matrix and recommendation

Waldron, on all of our CHP projects, have followed the approach of specifying the long lead
items early in the process. We typically specify the equipment, review the bids on behalf of
the owner, make purchase recommendations, and develop a conforming specification for
use by the owner in their purchase order. We not only have provided this service for the
owners but also have purchased the long lead equipment on our books as part of our EPC
work. We find the benefits to the project to be as follows:

e Obtain Air Permit early.

e Shortened overall schedule duration. Typical construction starts after initial air
permit approval. With generator bids, emission from the equipment is guaranteed
and therefore reduces emission uncertainty. Similarity, electrical Interconnection
Permit is granted prior to generator synchronization parallel with Utility. With
main switchgear design submittal available as part of the Interconnection
application this will reduce the risk of prolonging the permit application process.

e Reduction in cost risk by securing the price for a significant scope early in the
process.

e Allows the owner to structure a Long Term Service Agreement with the OEM at the
time of the purchase, thus creating the opportunity for a better “buy”.

e Allows for the receipt of detailed vendor drawings before generating the
construction documents. This allows for a more detailed fully coordinated design
resulting in a better “buy” for the CM. Although the design schedule will be
extended but the overall project schedule will be shortened and minimize potential
design change occur during the construction phase due to equipment information
and result in significant increase in cost.

e Lower risk for construction change orders due to the fully coordinated design.

Revised August 28, 2017
VWALDRON

Nashua Waste Water Treatment Facility - Energy Recovery Generator Upgrade
Engineering Design Services

3. 90% Design

3.1. Waldron will revise and incorporate the applicable comments to design
documents from the outcome of the 75% Design Phase review meeting.

3.2. Develop piping diagrams - plan, elevation and details.

3.3. Develop ductwork diagrams - plan, elevation and details.
3.4. Develop distribution piping diagrams - plan and details.

3.5. Mechanical installation specifications.

3.6. Develop equipment foundation design and installation notes.
3.7. Develop load flow and short circuit studies.

3.8. Develop Grounding design.

3.9. Cable and conduit routing diagrams.

3.10.Develop relay coordination study.

3.11. Develop conduit block diagrams.

3.12. Develop wire interconnection diagrams.

3.13. Develop switchgear, transformer and electrical control panel specifications.
3.14. Electrical installation specifications.

3.15.Hazardous location plan.

3.16.Control system integration and hardware specifications.
3.17. Building Code Review.

3.18.Attend three (3) design progress meetings with City of Nashua project team
and their representative.

4. 100% Construction Document (CD)

4.1. Waldron will revise and incorporate the applicable comments to design
documents from the outcome of the 90% Design Phase review meeting.

4.2. Develop Arc Flash study (for new CHP installation only)
4.3. Review cogen generator and switchgear vendor submittals.

4.4, Attend one (1) pre-bid conferences with all pre-selected construction bidders
to answer questions concerning bid documents, and prepare and distribute
meeting minutes to all pre-selected equipment and construction bidders

4.5, Answer bid phase equipment and construction RFIs

5. Air Permit Application Support (service provided by Wright-Pierces)

5.1. Review project information including existing air permit, annual monitoring
reports, and emissions data for proposed generators.

5.2. Hold kick-off meeting with Waldron and City of Nashua to review existing air
permit and the impact of generator emissions.

Revised August 28, 2017

WALDRON |

Nashua Waste Water Treatment Facility - Energy Recovery Generator Upgrade
Engineering Design Services

5.3. Hold scoping meeting with NHDES to review existing permit and requirements
for submittal on new generators.
5.4. Prepare permit submittal package (assumed Title V permit is not triggered):

5.4.1. Collect information on digester gas characteristics and current
generation rates from city of Nashua.

5.4.2. Collect information of generator emission rates from Waldron.

5.4.3. Collect information on intended digester gas utilization by various
boilers and flare currently permitted to burn digester gas.

5.4.4. Update emission rates from other WWTF sources utilizing digester gas
based on updated characteristics and intended use after generator
upgrade.

5.4.5. Complete Form ARD-1.
5.4.6. Complete Form ARD-2.
5.4.7. Submit draft permitting package to City of Nashua for review.

5.4.8. Address comments and submit package to NHDES. Note: NHDES will
conduct air modeling itself to confirm compliance with criteria and
whether Title V permitting is triggered.

5.5. Review comments from NHDES, if any, and prepare response to comments. If
Title V permitting is triggered, the likely response will be to limit the allowable
annual run time of selected emission source based on input from the City.

6. Construction Administration (Separate Scope of Work)
6.1. Attend one (1) construction kickoff meeting

6.2. Include two (2) site construction visits at the conclusion of Construction and
provide Building Permit Affidavit.

Revised August 28, 2017

WALDRON |

Nashua Waste Water Treatment Facility - Energy Recovery Generator Upgrade
Engineering Design Services

Ciarifications and Exemptions

1.

10.

11.

12.
13.

14.

Waldron’s design scope is based on 2 CAT G3406 200kW Model recip engine
generators and the allotted space is sufficient for the 2 CAT G3406 200kW Model
recip engine generator installation and operation. Design will be based on best
available information, not vendor design submittal, for the engine generator and
switchgear.

Evaluation of gas piping, the gas holding tank, and the gas flare are not included, and
would be evaluated in the future.

Wright-Pierce will assist Waldron with evaluation of gas cleaning equipment
upgrades if they prove to be necessary, and with the preliminary and final design
services for the recommended improvements to the gas cleaning or other gas
handling facilities as part of the overall generator upgrade project. However, it is
not possible to quantify the effort required until the evaluation above is completed

No architectural design or building structural design is included. The new CHP
generator will replace the existing CHP generators and will be in the current Energy
Recovery room.

Waldron does not include Value Engineering (VE) in the Scope after issuance of the
90% construction documents.

No changes to Existing fire protection and gas detection systems

City of Nashua will provide the recent 2 years of monthly electric and natural gas
bills and other relevant financial information.

HazOp review is not included
Deflagration Analysis is not included.

Construction Administration including answering RFI, contractor and equipment
submittal review, certify contractor payments or Change Orders, construction
meetings and construction review additional to the site investigation defined in
Paragraph 5 above are not included.

After 100% CD, design changes resulted from equipment vendor design information
is considered as Change of Scope.

Commission and commissioning / startup support is not included.

Equipment Factory Acceptance Test or visits to manufacturing or other facilities is
optional and will be billed per T&M rates.

Environmental and other permit application are not included.

Revised August 28, 2017

WALDRON

Nashua Waste Water Treatment Facility - Energy Recovery Generator Upgrade
Engineering Design Services

15. Testing of existing digester gas, electrical and mechanical systems are not included.
The design assumes the digester gas quality complies with engine manufacturer’s
fuel specifications.

16. Geotechnical analysis is by others.

17. WWTF will provide all relevant design drawings for existing facility including site
survey information.

Revised August 28, 2017

WALDRON

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WALDRON

37 Industrial Ave.
Exeter, NH 03833

One Penn Plaza,
36" Floor
New York, NY 10119

Jeremy P. Smith, P.E., Project Manager

Background

Jeremy Smith has six years’ experience as a power plant operator and fifteen years’
experience in consulting, design, and management of commercial and industrial
facilities. Jeremy is experienced in all phases of facility design; Cost/Benefit Analysis,
Schematic, Design Development, and Construction Management. He has performed
field surveys and inspections, prepared plans and specifications, developed
construction and operational cost estimates. Specialized experience includes:
industrial boilers combustion controls, fire Alarms, DCS/PLC programming,
cogeneration (also referred to as combined heat and power) power projects, Burner
Management Systems (BMS), district thermal loops, pulp & paper mills, heat
balance, performance tests, instrumentation and controls, historian programming.

Specialty Gas

Martignetti Liquors Facility — Taunton, MA

Waldron Engineering was contracted by Nuvera Fuel Cells to complete the
installation of a Hydrogen Fuel Cell refilling station to service the Martignetti
Liquors Facility in Taunton, MA. Additionally, two locations inside the facility
received dispenser equipment. The dispenser locations were selected to minimize
impact on plant operations. .

Role: Project Manager/Lead Engineer

NACCO Materials Handling Group Development Center — Fairview, OR

Waldron provided engineering, design and consulting services in support of obtaining
required permits for a hydrogen fueling station. The station located at a NACCO
Materials Handling Group facility where counterbalanced forklift trucks are
manufactured. The project involved the installation of Nuvera Fuel Cells PowerTap®
hydrogen generation, compression, storage, and dispensing equipment to provide
hydrogen for fuel cell forklifts operating at the facility.

Role: Project Manager/Lead Engineer

NACCO Materials Handling Group Development Center — Greensboro, NC

Waldron provided engineering, design and consulting services in support of initial
design work for a forklift refueling skid for the NMHG facility with dispensers.
Role: Project Manager/Lead Engineer

MBTA Facility — Charlestown, MA

Nuvera Fuel Cells contracted with Waldron for the engineering and design for the
MBTA facility in Charlestown, MA. The project included the installation of a
Hydrogen Fuel Cell refilling station to service MBTA buses.

Role: Project Manager/Lead Engineer

Nuvera Fuel Cell Facility — Billerica, MA

Waldron Engineering provided Nuvera Fuel Cells with engineering and design
services for the NFC Facility in Billerica, MA. The project included the installation of
a Hydrogen compression equipment pad at Nuvera Fuel Cell’s Billerica facility.

Role: Project Manager

WALDRON ENGINEER

WALDRON

37 Industrial Ave.
Exeter, NH 03833

One Penn Plaza,
36" Floor
New York, NY 10119

Jeremy P. Smith, P.E., Project Manager

Industrial Boiler Plant

Harvard University — Cambridge, MA

Managed all aspects of engineering, procurement, and commissioning for a complete
control and BMS retrofit of Boiler 11 (200kpph, 400 psig) and Boiler 6 (L0Okpph,400
psig) , bringing the existing outdated systems into compliance with modern codes and

instrumentation.

National Resources Group-Huntley — Tonawanda, NY

Project Manager for an engineering study project to refine options and initial design
for a gas firing retrofit of coal/fuel oil units 67 & 68 (1470 kpph, 2460 psig) for the
facility.

Wheelabrator Technologies -North Broward — Pompano Beach, FL
Project Manager for an engineering study of boiler performance and retrofit options
for LFG conversion for three MSW/NG boilers (186 kpph, 850 psig).

Utility and Power Plant

Lyondell Basell Cogeneration — West Lake, LA

Control programming and integration of the balance of plant controls for the 30 MW,
three generator facility with five steam generators.

Pfizer — Groton, CT
Fire Protection Engineer for the 10 MW CHP project. Controls Engineer responsible
for the control programming and integration of the balance of plant controls for the

cogeneration facility.

Biogen Idec — Cambridge, MA
Control systems FAT and SAT, integration efforts, and implementation of control
system training program for the 5 MW cogeneration facility.

P&G Gillette World Headquarters — Boston, MA
Responsible for the control systems, fire protection, and environmental monitoring
for the combustion turbine, CEMS, HRSG, and Gas Compressor at the 7.2 MW

cogeneration facility.

One Bryant Park — New York, NY
5 MW recuperative turbine cogeneration project --specification wiring, bidder
reviews, equipment selection, and vendor interface design.

Consolidated Edison Development — West Springfield, MA
Dual fuel conversion project.

Vineland Howard M Down Unit 11 — Vineland, NJ
Utility Grade Simple cycle combustion turbine project. Responsibilities included
project management of the engineering, design, and permitting support for a 64 MW

WALDRON ENGINEERING é

WALDRON

37 Industrial Ave.
Exeter, NH 03833

One Penn Plaza,
36" Floor
New York, NY 10119

Jeremy P. Smith, P.E., Project Manager

Utility power project for the Vineland Municipal Electrical Utility. Oversights of Air
permit, site planning, state, and county reviews. Engineering budget for this $70+
million project was $2.2 million

Federal Government
(district heating loop --dynamic response modeling, control component sizing, control
algorithm design, and control logic diagrams)

institutional

Harvard University — Cambridge, MA

Boiler 13 project-facilities automation upgrade for a dual-fired large industrial boiler,
new fuel oil storage & distribution system, new steam turbine, new electrical
distribution system, additions to the balance of plant instrumentation and controls.

Harvard University — Cambridge, MA

Boiler 11&12 project-Project Management of the facilities automation upgrade for a
dual-fired large industrial boilers, retrofitted burner, and upgraded gas trains.
Replacement of CCS and BMS systems. Waldron was the engineer and the supplier
of the upgrade components. Responsible for permitting to support project

requirements

UMass Medical School — Worcester, MA

Facility upgrade to add a 7.5 MW turbine, HRSG, CEMS, chiller, and gas
compressor. Responsibilities included the control systems, fire protection, and
environmental monitoring system.

NECCO (Revere Energy Corp) — Revere, MA

Project Manager for facility upgrade project including Plant HVAC upgrades,
personnel protection insulation survey and installation, air compressor emergency
cooling modifications, air handler modifications, battery room venting retrofit,
emergency generator shelter structure, heat exchanger change out for jacket and
auxiliary water systems, master fuel trip installation, explosion relief valve retrofit,
and feed water system modifications.

Columbia University — New York, NY

Facility upgrade study comparing options for Brayton combustion turbine against
recuperative, Otto, and rankine cycle plants, responsible for control systems, fire
protection, and environmental monitoring system, loads and emissions profiles.

Professional Qualifications
BS, Mechanical Engineering, University of New Hampshire
Associate, Technical Writing, University of Phoenix

WALDRON ENGINEERING & CONST