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< Back to all projects NATIONAL AERONAUTICS & SPACE ADMINISTRATION LOCATION: Hampton, VA IN-SERVICE: 2008 SIZE & TECHNOLOGY: Steam and Condensate Distribution System FIRM ROLE: Engineer of Record NASA undertook a major steam distribution redesign project to replace an aging system that could no longer support the integration of two remote steam generating plants and was having water hammer problems that were causing structural challenges. Waldron was selected to engineer and design a new system for steam supply and condensate return for NASA’s Langley Research Center. The system installed over a mile of piping and integrated many buildings on the center’s campus into the distribution system that had to be capable of receiving steam from two remotely located steam generating plants. The system consisted of above ground sections, direct buried sections and underground utility tunnel-based sections, all support and anchoring components and flow and pressure control devices and instrumentation. Steam conditions are 400 psig saturated steam and flow rate of 75,000 lb/hr.

< Back to all projects LONGWOOD MEDICAL ENERGY COMPREHENSIVE STUDY LOCATION: Boston, MA STUDY DATE: November 2014 – December 2015 SIZE & TECHNOLOGY: Gas Turbines, Reciprocating Engines, Chillers, Boilers FIRM ROLE: Feasibility Study The Longwood Medical Area (LMA) is a world-class medical and academic center located between Brookline and Mission Hill. With the central energy plant serving the hospital district getting close to 40 years in age, Longwood Medical Energy commissioned Waldron Engineering & Construction, Inc. to develop a study for the replacement of the existing facility and distribution net-work. Longwood Medical Energy consists of Brigham & Women’s, Harvard Medical School, Children’s Hospital, Beth Israel Deaconess Medical Center, Dana Farber Cancer Institute, Jimmy Fund and other healthcare and research facilities. The comprehensive study covered load analysis with growth projections, central plant, distributed generation and satellite plant options and radial, loop and other distribution options. The technical options include gas turbines, reciprocating engines, chillers, boilers and complete balance of plant. Work included life cycle performance projections, O&M cost budgets and construction cost estimates.

< Back to all projects UNIVERSITY OF MASSACHUSETTS MEDICAL SCHOOL LOCATION: Worcester, MA DESIGN START: Winter 2010 DESIGN COMPLETION: Winter 2011 SIZE & TECHNOLOGY: 7.5 MW Electric, 60,000 lb/hr Steam, 4,000 ton Electric Chiller, Dual Fuel Combustion Turbine FIRM ROLE: Engineering, Construction Management, Technical Support and Commissioning The University of Massachusetts Medical School (UMMS) in Worcester is a large medical hospital, research center, and medical school campus. Due to continuing campus expansion, their existing cogeneration facility could not meet capacity. Energy efficiency and reliability were key concerns in developing plant options. Waldron Engineering was selected to do the engineering and design of the UMMS cogeneration plant expansion. The cogeneration plant expansion included a 7.5 MW dual fuel combustion turbine, a fired HRSG rated at 60,000 lb/hr, 1100 psig and 850ºF, a new natural gas compressor, a new 4000 TR electrical chiller and a new plant master electrical control system with intelligent load shedding scheme that greatly enhanced the overall electrical system reliability. The new cogeneration system boosted the overall efficiency from 55% to over 70%, exceeding expectations. The project scope included: building structural design electrical design—included interconnection between the existing generators and the new electrical system to shape a complete load shedding scheme mechanical design— included high pressure steam system connecting with the existing steam system new HP natural gas system modified an existing 80,000 gal no. 6 fuel oil system to no.2 fuel oil system.

< Back to all projects BRIGHAM & WOMEN'S BATTERY ENERGY STORAGE SYSTEM LOCATION: Boston, MA DESIGN START: November 2018 DESIGN COMPLETION: December 2019 SIZE & TECHNOLOGY: 1 MW/660kW-Hr FIRM ROLE: Engineering, Construction Management and Commissioning The installation of a Battery Energy Storage System (BESS) at the Brigham & Women’s Hospital was executed as an EPC (Engineer-Procure-Construct) project. BWH was looking for resiliency and peak demand reduction for their campus. The new battery energy storage system supplements operation of the existing CHP system which included a 4 MW natural gas fired Caterpillar engine and waste heat recovery. The now Hybrid-CHP system will provide operational cost savings and in the event of a power outage, could supplement the emergency diesel engines to provide power to the hospital. The project was installed in association with the MA-DOER. Scope of work included: Engineering and Design Procurement Permitting Construction Commissioning Turn-over

< Back to all projects JAMAICA PRIVATE POWER COMPANY LOCATION: Rockford, Jamaica DESIGN START: 1993 IN-SERVICE: Commercial Operation, Q1 – 1998 SIZE & TECHNOLOGY: 64 MW Heavy Fuel Oil (HFO) Slow Speed Diesel Engines with Condensing Steam, Turbine Generator FIRM ROLE: Owner’s Engineer, Start-Up and Commissioning Waldron Engineering was engaged to develop a design concept and technical specification to enable the owner to solicit turnkey construction bids. Subsequent to the initial work, we were retained to start-up; commission and performance test this facility. Waldron acted as the Owner’s Engineer – involved in the project development phase and assisted the owner to develop an EPC RFP and EPC bid evaluation, along with reviewing contractor design and construction submittals. Waldron participated in the project design and construction meetings. In the start-up and commissioning phase Waldron assisted with the equipment start-up crew to start-up the major equipment, develop commissioning plans and performed system commissioning tasks. Waldron also developed the facility performance test protocol, analyzed performance test results and developed the final performance test report. The facility contains two MAN slow speed 30 MW reciprocating engines exhausting into two pressure forced circulation heat recovery steam generators and one 4 MW steam turbine.

At Waldron, commissioning is a thoroughly mapped, step-by-step approach designed to explore the entire operating envelope of a facility and demonstrate the project’s key outcomes have been met. Because of our focused expertise in energy system engineering, we are able to remain constructively engaged throughout the process of testing, troubleshooting, and optimizing a facility’s performance. COMMISSIONING At Waldron, commissioning is a thoroughly mapped, step-by-step approach designed to explore the entire operating envelope of a facility and demonstrate the project’s key outcomes have been met. Because of our focused expertise in energy system engineering, we are able to remain constructively engaged throughout the process of testing, troubleshooting, and optimizing a facility’s performance. STEP-BY-STEP GUIDANCE PROJECT DEFINITION In-depth commissioning requires a thorough understanding of project goals. As with all of our services, the starting point is a detailed understanding of the specific financial, environmental and functional criteria established at the project outset. This knowledge informs the planning process. PLANNING There are three levels of planning: project level sequencing of system energization and functional testing with a facility, detailed step-by-step commissioning procedures for each system that guide the start-up and testing processes, and daily plans convened by Waldron’s commissioning manager on-site to coordinate all parties associated with or affected by the work. Much of our work is accomplished in operating facilities and requires a thorough understanding of the impacts commissioning will have on existing systems, as well as the ability to develop contingency plans. TESTING AND RESPONDING Commissioning is not a straight line from A to B: a thorough commissioning process is a daily encounter with the unexpected. Waldron’s commissioning teams excel at providing leadership and technical guidance to clients, contractors and operations teams when troubleshooting is necessary, and are capable of efficiently realigning resources to keep the process moving forward. Given the opportunity, we are not passive observers, but active contributors to the resolution of difficulties encountered. DOCUMENTATION Waldron provides daily reports of commissioning activities, as well as annotated procedures that document the step-by-step outcomes realized during the commissioning process. The result is a wealth of information for the facility owners and operators. It is possible to understand exactly what was tested, what worked and what didn’t and why, and how the deficiencies were resolved. The result is a clear roadmap for future operations.

< Back to all projects P&G GILLETTE WORLD HEADQUARTERS CHP LOCATION: Boston, MA DESIGN START: Winter 2009 DESIGN COMPLETION: Summer 2010 SIZE & TECHNOLOGY: 7.5 MW Taurus 70 with HRSG & SCR FIRM ROLE: Engineering, Procure, Construction Management and Commissioning IN-SERVICE: Summer 2011 Waldron was selected by P&G Gillette to expand their existing power plant by installing a new combined heat and power plant in a location that was occupied by an existing boiler. A multi-level plant design was developed with the prime mover selected as the 7.5 MW Solar Taurus 70 gas turbine that exhausted through a 100kph Rentech HRSG. Waldron was also awarded the construction management (CM) and procurement contract for the plant installation. Except for the turbine, gas compressor, and HRSG; Waldron supplied all plant auxiliary equipment and subcontracts to execute the plant installation. The CM scope included site work, soil remediation, driven piles, concrete foundations, demolition of existing plant interferences and boiler, abatement, structural steel installation, major & auxiliary equipment installation, piping & insulation, aqueous ammonia tank, fire suppression, fire alarm, architectural finishes, electrical distribution, and instrumentation and controls. In addition, Waldron performed the start-up & commissioning of the plant. Throughout the project there was continued added scope due to unforeseen conditions with an expectation of zero changes to the schedule. Waldron also had changing utility interconnect requirements which led to impacts on the design. In addition, Waldron successfully navigated Boston permitting changes during the certification of occupancy process. Waldron’s work on Gillette proved to be very challenging. After many curveballs, we met those challenges successfully. For example, Waldron had to perform the demolition and erect structural steel inside the operating plant—a plant that could not have any unplanned outages. We also had to be creative in planning and executing construction operations during severe weather conditions in order to make a large cut in the existing building envelope during the winter months in Boston. Existing sensitive equipment and systems installed in the construction path had to be protected from construction activities. As a scheduling challenge, Waldron had to coordinate weekend fire alarm testing and the permit closeout process between the vendors, the subcontractors, the Boston Fire Department and P&G – which in and of itself is no small task. It is worthy to remember that the plant had to stay operational at all times to support the manufacturing of P&G Gillette products. Waldron and our subcontractors planned and worked many major holiday weekends to suit the few plant planned outage schedules. Waldron worked closely with the client and building owner during the commissioning process to overcome impacts to the newly installed equipment from utility harmonics.

Waldron is a technology-driven company with the experience to execute projects that utilize the following: Hydrogen, Biomass, Organic Rankine Cycle, Renewable Natural Gas, Battery Energy Storage Systems, Microgrid, Solar, Heat Pumps, Hybrid CHP, Technologies Waldron is a technology driven company with the experience to execute projects that utilize the following: Hydrogen Generation storage and distribution of Hydrogen requires a special set of expertise to navigate the challenges of this renewable energy gas. We utilize our process design expertise developed executing many Hydrogen projects to optimize the project economics and apply our experience codes and regulations to secure a reliable, safe installation. Key Project: USPS Maryland Hydrogen Biomass After 30 years of working on Biomass projects, Waldron has developed an expertise that ensures accurate performance and economic modeling. We utilize technology solutions that bridge the fuel available to the customer’s energy needs. Our team has the practical know how to execute the design details that will yield project success. Key Project: Fraser Paper Biomass Organic Rankine Cycle (ORC) Process Waste Heat is the new energy gold to be mined as a source of renewable energy. Waldron’s advanced thermodynamic modeling will accurately determine the value of your existing waste stream. We work with packaged units utilizing commercial refrigerants to custom designs that utilize the range from supercritical CO2 to Iso Butane. Our implementation experience with advanced hydrocarbon cycles provides us with the expertise to turn your waste heat into an economic and environmental asset. Key Project: Generadora Electrical Del Norte (Genor ) Organic Rankine Cycle Renewable Natural Gas Organic Waste is now a fuel to be utilized in the new renewable energy space. Material that is typically composed or landfilled can now be converted to pipeline quality Renewable Natural Gas and utilized on site or injected into the natural gas system. Our experience with energy generation systems that utilize a range of gas compositions provides us with the unique capability to implement microgrids that utilize Anaerobic Digestion Renewable Natural Gas. Key Project: Nashua Wastewater Treatment Facility Anaerobic Digestion Battery Energy Storage Systems Battery Energy Storage Systems have matured into a commercially available mass-produced product. The application of the product to our customers systems and energy challenges is the key to success for BESS projects. Waldron can model the system for optimal economic benefit, install the controls to ensure that economic success, and install the system and auxiliaries that will ensure the safe operation. Key Project: MRMC Battery Energy Storage System Battery Energy Storage Systems Microgrid Thirty years ago, Waldron took the technology lead in the designing, building and commissioning microgrids and has never looked back. Our microgrids are powered by a range of technologies that provide positive economics, resiliency and sustainability solutions for our customers. We continue to advance our hybrid designs, responding to the ever-changing landscape for our clients. Key Project: Biogen CHP Microgrid Solar Solar As part of our approach to maximize the use of zero carbon sources of energy. Waldron integrates solar into our microgrids in our hybrid approach to develop solutions that provide minimal carbon impact for the energy needs of our clients. The integration of solar with other assets requires planning and process controls to deliver optimal economics. Key Project: Smith College Heat Pumps Waldron’s process modeling allows us to bridge the gap between heat available and the process needs of our clients. We utilize heat pumps to maximize the heat recovery potential for a site increasing the energy quality of waste streams to match the facilities consumption needs. Heat Pumps Hybrid CHP The emergence and commercialization of battery energy storage systems has created a new operational paradigm for combined heat and power facilities. Disconnecting the generation and consumption of electricity allows for the CHP facility to operate at optimal efficiency for the current and future conditions. Key Project: TWA Flight Center Hotel Energy Center Hybrid CHP Compressed Air Energy Storage Infrastructure exists throughout the North America for the storage of natural gas in natural occurring salt domes. These domes can be repurposed to store compressed air for energy storage. The process involves compressing air during peak generation of wind or solar energy and expanding it during periods when the renewable resource is unavailable. Key Project: Conoco Phillips Compressed Air Energy Storage Anchor 2

For thirty years, Waldron Engineering & Construction has delivered custom-engineered energy solutions to a diverse array of clients. From turnkey facilities to fresh insights that drive decision-making, we offer resilient, innovative and constructible solutions built to thrive in today’s dynamic utility landscape. Anchor 1 TERENCE WALDRON, P.E. CEO Terry attended Monsignor Bonner High School in the suburbs of Philadelphia. There he became a member of the school’s crew team, spending afternoons rowing on the Schuylkill River. Prompted by his thirst for technical knowledge and desire to advance his rowing, he went on to Columbia University in New York City. In 1982 he graduated from Columbia with a Bachelor of Science degree in Engineering Mechanics with a strong concentration in applied mathematics. During his tenure at Columbia he worked as an intern with Stone and Webster, joining the firm full time after graduation and working on the design of nuclear power plants. Foreseeing the decline of the nuclear power industry, he moved his talents to Boston and joined Chas. T. Main. At Main he was a mechanical engineer working in the industrial power group. While at Main he developed PC-based applications for performing heat balance and fluid flow modeling systems. Terry then founded Waldron Engineering when it became evident there was a need for highly skilled engineering services with responsive customer focus for the new independent power industry. For the last 28 years he has lead Waldron to become an industry leader in the CHP and private power industry. When not offering solutions to clients, Terry spends time with his wife and five children. He enjoys running, rowing, biking and devouring historical novels. But, a true geek at heart, he has the most fun developing ideas for new energy technologies – some of which will soon come to fruition. JOHN SWEET, P.E President John attended the University of Michigan and graduated with a Mechanical Engineering Degree. He then spent over 5 years in the U.S. Navy as a commissioned officer in the Nuclear Powered Surface Warfare community. In addition to other combat systems related assignments in the Navy, he was the electrical distribution officer on-board the USS Enterprise, a nuclear-powered aircraft carrier where he also was responsible for the supervision of the operation of a dual nuclear reactor plant complex. Shortly after leaving the Navy, he attended Boston College where he earned his MBA. John helped to launch Waldron in 1992. During his career at Waldron he has worked in various roles, from mechanical engineer to lead mechanical engineer as well as project management and corporate management responsibilities. He has been involved in power projects around the world from Indonesia and India to Peru and Honduras, as well as many in the U.S. He has been responsible for the management of the engineering, procurement and construction of several of Waldron’s largest Combined Heat and Power projects. He enjoys cycling, golfing, playing chess, and spending time with his wife and daughters at the beach near their home in Kennebunk, Maine. John Sweet David Forbes GRANT PAGE VP of Construction Grant earned a bachelor’s degree from Massachusetts Maritime Academy where he majored in Marine Engineering and minored in Plant and Facilities Engineering. He also received an MBA from Franklin Pierce University. Grant spent several years working at the Portsmouth Naval Shipyard as a maintenance and planning engineer. Grant went on to work in the industrial construction and public utility sector, building 20+ years of experience as an engineer, estimator, project manager, and safety officer. His expertise includes the development and execution of projects using Construction Manager at Risk; Design-Build; and Engineering, Procurement, and Construction (EPC) project delivery methods. Grant lives in southern New Hampshire where he enjoys spending time with his wife and two children. In the summer he can be found in the New Hampshire Lakes Region boating with family and friends. In the fall he can rarely be found, as he wanders into the woods… sometimes in blaze orange and sometimes in camouflage. MICHAEL MARK, P.E. VP of Engineering After a brief tenure in the mid-West, Michael landed in Alabama in time to join-up for the first grade, where as a transplant he struggled to put the sport of football in its appropriate context. This was rectified by his enrollment at Auburn University, where his formal education on the matter was completed. He participated in the Cooperative Education Program while at Auburn and worked for two years with Rheem Manufacturing in Montgomery, AL while completing his Mechanical Engineering Degree. After graduation Michael moved to Maine, bought a suit, and responded to an outdated job posting that confused everyone involved, but led to a part-time position at Waldron in 2000. The part-time aspect of his employment lasted for about a day, since which time Michael has progressed steadily within the company to his current position. He has worked on projects of all shapes and sizes, from studies to commissioning, including construction projects with steam turbines, power boilers, reciprocating engines and combustion turbines. Michael continues to live in Maine with his wife. He enjoys both reading and writing, with a smattering of his favorite novels being Cryptonomicon by Neal Stephenson, Mason & Dixon by Thomas Pynchon, and White Noise by Don DeLillo. As far as technical books go, The End of Certainty by Ilya Prigogine went down pretty well, as did The Rainbow and the Worm by Mae-Wan Ho. He grew up on a steady diet of Jim Kjelgaard stories. MICHAEL MARK, P.E. VP of Engineering After a brief tenure in the mid-West, Michael landed in Alabama in time to join-up for the first grade, where as a transplant he struggled to put the sport of football in its appropriate context. This was rectified by his enrollment at Auburn University, where his formal education on the matter was completed. He participated in the Cooperative Education Program while at Auburn and worked for two years with Rheem Manufacturing in Montgomery, AL while completing his Mechanical Engineering Degree. After graduation Michael moved to Maine, bought a suit, and responded to an outdated job posting that confused everyone involved, but led to a part-time position at Waldron in 2000. The part-time aspect of his employment lasted for about a day, since which time Michael has progressed steadily within the company to his current position. He has worked on projects of all shapes and sizes, from studies to commissioning, including construction projects with steam turbines, power boilers, reciprocating engines and combustion turbines. Michael continues to live in Maine with his wife. He enjoys both reading and writing, with a smattering of his favorite novels being Cryptonomicon by Neal Stephenson, Mason & Dixon by Thomas Pynchon, and White Noise by Don DeLillo. As far as technical books go, The End of Certainty by Ilya Prigogine went down pretty well, as did The Rainbow and the Worm by Mae-Wan Ho. He grew up on a steady diet of Jim Kjelgaard stories. Michael Mark

Energy projects today face the unprecedented challenge of balancing economic, functional, and environmental outcomes in the face of rapidly evolving regulatory and market conditions. Waldron’s industry-leading analytics provide the strategic insights necessary to make efficient investment decisions, track program performance over time, assess risk and track the key metrics most important to your organization. ANALYTICS Energy projects today face the unprecedented challenge of balancing economic, functional, and environmental outcomes in the face of rapidly evolving regulatory and market conditions. Waldron’s industry-leading analytics provide the strategic insights necessary to make efficient investment decisions, track program performance over time, assess risk and track the key metrics most important to your organization. DATA-DRIVEN RESULTS ENERGY MODELING TOOLS The cornerstone of Waldron’s analytical services is a proprietary, internally-developed software platform capable of performing integrated electrical, thermal, economic, and greenhouse gas emissions calculations for complex microgrid systems. Some basic features of the platform are the following: Utilizes equipment performance curve library enables accurate prediction of part-load performance of major electrical and thermal generation equipment. Incorporates electrical generation, solar PV, heat recovery, energy storage systems, centrifugal and absorption chilling, heat recovery chilling, heat pump technologies and other principal utility generation assets. Manages a portfolio of individual building loads that vary in time due to construction, demolition, energy efficiency retrofits, and demand-side management programs. Modifies the condition or performance of microgrid assets over time, such as time-varying fuel cell plant performance, combustion turbine degradation between overhauls, etc. Dispatches electric and thermal generation assets to concurrently meet electrical, steam, hot water and chilled water loads. Integrates multiple commodity supply cost futures, utility tariffs, and procurement strategies. Incorporates scheduled and unscheduled (randomly selected) maintenance periods and equipment availability profiles. Performs internal auxiliary load calculations for central energy plant and microgrid parasitic loads. Capable of incorporating and simultaneously dispatching multiple facilities on a common microgrid. STRATEGIC INSIGHTS Our array of in-house tools coupled with our experience in the design, construction and commissioning of energy generation and delivery systems enables us to offer true investment grade analysis. Our flexible tools allow rapid assessment of changes to market, regulatory or supply/demand conditions, so that existing assets are deployed optimally throughout their operating lifetimes. Determine optimal microgrid equipment configurations Efficiently identify key project drivers, sensitivities, and risks Track asset performance year-over-year compared to benchmark models Evaluate the true impact of Energy Conservation Measures (ECM’s) in a microgrid environment Identify the most cost-effective and environmentally sound dispatching strategies Determine the true cost of outages and equipment downtime Develop and/or analyze microgrid rate structures based upon calibrated system models Optimize returns on demand-side investments

Waldron’s detailed engineering packages are fully-coordinated, comprehensive, and informed by the client’s needs. The key is to understand the stakeholder’s goals, and structure a set of plans and specifications that clearly communicate these goals to the contractors. In turn, the result is a well-defined, successful project. ENGINEERING Waldron’s detailed engineering packages are fully-coordinated, comprehensive, and informed by the client’s needs. The key is to understand the stakeholder’s goals, and structure a set of plans and specifications that clearly communicate these goals to the contractors. In turn, the result is a well-defined, successful project. OUR PROCESS Important steps in the engineering and design services process include: PROJECT DEVELOPMENT The project development process can be a tortuous path through a maze of regulatory, contractual and financial barriers. Navigating this gauntlet successfully requires knowledge of the ways in which facility performance, technical constraints, and regulatory obligations coincide. Our direct experience bringing energy facilities from concept to operation enables us to optimize the path for you without sacrificing key outcomes. DETAILED ENGINEERING & DESIGN Waldron’s detailed engineering and design process is an orchestrated flow of information that proceeds from a comprehensive understanding of stakeholder goals to a set of plans and specifications that is specific to the project’s needs. We take a “no more and no less than is needed” approach: our multi-discipline in-house coordination process emphasizes comprehensive drawing sets with little to no delegated design, while our specifications are pared down to those requirements both specific to and essential to the project. The result is a design package truly ready for bidding and construction, which minimizes change orders and project delays by providing the clear direction that is required for an efficient construction process. CONSTRUCTION ADMINISTRATION Every construction project presents unique challenges. The key to success is working proactively with the vendors and trade subcontractors to navigate those challenges in a timely and cost-effective manner on behalf of the Owner. Waldron emphasizes productive relationships with all stakeholders, and adopts a responsive, flexible approach to overcoming obstacles and keeping the project on track. Because the starting point is a comprehensive, fully-coordinated design, our teams have the ability to quickly identify the impacts of design decisions on all project disciplines and resolve field challenges practically and efficiently.

< Back to all projects FAA – EMERGENCY GENERATOR PROJECTS LOCATION: Multiple Locations DESIGN START/COMPLETION: 2002 – 2010 SIZE & TECHNOLOGY: High Reliability Electrical Systems FIRM ROLE: Engineering Design Waldron served as the Engineer for a series of emergency/standby generator upgrades and/or replacements at radar sites across the United States for the Federal Aviation Administration. A typical project included an engine generator, automatic transfer switch, load bank, HVAC upgrades and a fuel tank/pump system.