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< Back to all projects NATICK SOLDIER SYSTEMS CENTER LOCATION: Natick, MA STUDY DATE: May 2017 – July 2019 FIRM ROLE: Feasibility Study NAICS: 541330, 237130, 237120, 236220, 221112, 221117, 221118, 221121, 221122 Waldron performed a study on the behalf of Constellation to evaluate the installation of a CHP plant at the NSSC campus. The basis for the study was an hourly utility model that was developed from utility load and cost information supplied by NSSC. The objective of the project was to determine the optimal-sized prime mover, evaluate the financial performance of the project, and develop a cost estimate to construct and commission the facility. Waldron also evaluated the utility modifications and interface changes required to operate the facility electrically as a Microgrid with thermal distribution loops. The recommended configuration is proceeding as a third party paid ESPC project.

< Back to all projects GENERADORA ELECTRICAL DEL NORTE LOCATION: Puerta Barrios, Guatemala SIZE & TECHNOLOGY: 5.8 MW Turbo Expander, Super Critical Propane, Cycle Evaporative Cooling DESIGN START: Fall 2012 IN SERVICE: Spring 2013 SCHEDULE: Construction Start Winter 2013, Construction Complete Summer 2013 FIRM ROLE: Engineering, Procurement Generadora Electrical Del Norte (Genor), a Guatemalan independent power producer, owned a 40 MW heavy fuel oil-fired reciprocating engine plant in Puerto Barrios, Guatemala. Recognizing the benefits of an improved plant heat rate, Genor under-took an analysis of ways to improve the output and efficiency of the Puerto Barrios facility. A number of options were analyzed to “combine cycle” the plant. The plant selected the Organic Rankine Cycle ORC-AT, as designed by Waldron. Waldron has an exclusive license agreement to design and construct the ORC-AT cycle. The cycle consists of a two-stage heat recovery system producing supercritical propane from exhaust waste heat. Energy in the propane is converted to shaft horsepower in a two-stage turbo expander coupled to a single generator via a common gearbox. Heat from exhausted propane is recuperated against propane prior to recycling to the superheater. Cooling for the cycle is via a bank of evaporative condensers. The plant will produce a net output of 4.0 MW for sale to the grid with the addition of no fuel input.

< Back to all projects YALE UNIVERSITY ELECTRICAL WORK LOCATION: New Haven, CT PROJECT DATES: 2013 – 2016 FIRM ROLE: Designer, Commissioning Waldron has completed multiple projects for Yale University. Below are some of the electrical focused projects that have been completed. 1. Supplemental Generator Project a. Designed and installed 3 mobile generators to provide supplemental power to the Yale University Campus. The mobile generators operate in parallel with existing turbine generators and emergency generators. The three mobile generators run in parallel with each other and have load share capability. b. Controls of the generators are designed to operate the generator from three locations, local manually, chiller plant control room-automatically and the central power plant control room automatically. Controls for the new switchgear were connected into the DCS and existing synch panel for remote control. Raise/Lower voltage and frequency, synch check and other interlocks will be designed as needed. c. Arc Flash Study completed for all new equipment. d. Developed the Sequence of Operation for the generator control system. 2. New Vista Key Control Project a. Designed and commissioned the new Vista Switch Key Interlock Controls between four existing 15KV breakers. The Vista Switch Key Interlock Controls allow the associated 15 KV circuit breaker to be closed on a dead bus when the vista switch is open. This energizes the vista switch on the campus side of the switch and allows the utility to perform phase checks at the vista switch. The vista switch is not allowed to close if the key interlock switch is activated. All synchronizing remains across the 15KV breakers. b. Developed the Sequence of Operation for the Vista Switch Key Interlock control system.

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. CONSULTING 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 HARVARD BLACKSTONE – BOILER 13 DESIGN START/COMPLETION: Spring 2006 – Summer 2007 SIZE & TECHNOLOGY: 5.0 MW Electric, 150,000 lb/hr steam fired boiler / backpressure steam turbine IN-SERVICE: Fall 2008 FIRM ROLE: EPC – Engineering, Procurement Support, Construct, Commissioning In 2003, Harvard purchased the Blackstone Station from NSTAR to insure a secure source of steam to serve the future campus expansion. Waldron was retained to provide technical due diligence for the purchase. Waldron was challenged by Harvard to develop a plan for Blackstone that would meet the Campus growth needs into 2020. The first step in the plan was the installation of Boiler 13, underground fuel oil storage, a steam turbine generator and a complete upgrade to the electrical and mechanical systems. Waldron’s scope was to develop the construction plans and specifications, construction management of the project for Harvard, commission, and test the new equipment.

< 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.

< Back to all projects NEWINGTON ENERGY LOCATION: Newington, NH IN-SERVICE: May 2004 SIZE & TECHNOLOGY: 2x-GE 7FA Combustion Turbines with dry, low NOx Combustors FIRM ROLE: Owner’s Engineer, Design Engineer, Commissioning Waldron Engineering was engaged to act as the Independent Engineer on behalf of the owner, Con Edison Development. The installed facility generates 535 MW of electricity using natural gas or No. 2 Fuel Oil. Emissions is controlled by using a combination of low NOx combustion and SCR in the HRSG. Waldron had a full-time presence on-site to supervise the design, construction, commissioning and testing of the plant on the owner’s behalf.

< Back to all projects MILFORD REGIONAL MEDICAL CENTER MICROGRID LOCATION: Milford, MA DESIGN START: January 2015 SIZE & TECHNOLOGY: 800 kW Reciprocating Engine IN-SERVICE: December 2015 FIRM ROLE: Engineering, Construction, Commissioning The installation of a new combined heat and power (CHP) system at the Milford Regional Medical Center was executed as a fast track project by Waldron. Milford was looking for cost savings and resiliency for their campus. The new CHP system included a packaged 800 kW natural gas fired Caterpillar engine and waste heat recovery. Heat from the jacket water system and the engine exhaust are utilized to produce 15 psig steam for the hospital low pressure system. Energy from the engine lube oil system was recovered and utilized for the domestic hot water system. The 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 completed in 10 months, from notice to proceed to utility acceptance testing. 600 kW and 600 kWh Energy Storage System (ESS) operating in parallel with the existing CHP and utility. The ESS has the capability to black start the CHP and together can operate isolated from the Grid. With this new ESS addition, Milford Hospital established a highly resilient microgrid system with the option to add PV or other renewable generations. This project is endorsed by MA Dept of Energy Resource (DOER) Resilience Program. An economic benefit of ESS, is that it is able to do peak shaving to reduce the overall energy costs. Scope of work included: Construction Permitting Balance of Point—Detailed Design Review CAT Supplied Equipment Submittals Elevated Gas Permit Variance Construction Commissioning

Waldron’s most important asset is its people. Whether it’s working an outage, responding to an urgent request for support, managing critical project information, or gathering around a conference table to ensure each aspect of your project has been carefully considered, it’s our people who make the difference that we deliver. Our People Waldron’s most important asset is its people. Whether it’s working an outage, responding to an urgent request for s upport, managing critical project information, or gathering around a conference table to ensure each aspect of your project has been carefully considered, it’s our people who make the difference that we deliver. We’re proud to employ some of the energy industry’s top profes sio nals—people who are committed to ensuring each project is a success, and who have the knowledge and skills to accomplish the task. Our team brings extensive experience across each of the engineering and design disciplines we cover, and everyone in the organization shares a focus on delivering solutions to our clients. We believe in ongoing mentoring We believe in continuing education and training for our staff to stay up-to-date. Whether you are new to a role or looking to update your skills, we believe in constant education and cross-functional learning. We nurture a culture of caring Waldron provides industry leading benefits for our employees including healthcare and tuition reimbursement. We provide a hybrid working environment that embraces both a work from home aspect coupled with an in office work component that fosters flexibility, mentoring, learning and a shared understanding of Waldron’s culture and values. We encourage personal professional development along a career path that leads to professional registration as an engineer or other relevant credentials. New Hampshire’s seacoast is our home and our playground Our main office is located in an area of the New England Seacoast that could be called a 'Hidden Gem'. Many of our employees get together after the workday to mountain bike in trails adjacent to our office. Downtown Exeter, NH has a vibrant culture and community. Nearby Portsmouth, NH is a progressive and eclectic mix of stunning architecture with fantastic dining, shopping, and commercial experiences. Escape to the beach, only a 15-minute ride from our office. Natural beauty and adventures like snow skiing, water-skiing, mountain hiking, and rock climbing are a short drive to Northern New Hampshire, Maine, or Vermont. We make time for fun Waldron has a supportive work environment that thrives on taking time to connect. We frequently enjoy morning doughnuts, lunches catered by local food trucks, sunset cruises, and ax throwing.

< Back to all projects MRMC BATTERY ENERGY STORAGE SYSTEM LOCATION: Milford, MA DESIGN START: November 2018 IN SERVICE: January 2020 SIZE & TECHNOLOGY: 710 kW/510 kW-Hr FIRM ROLE: Engineering, Construction Management and Commissioning The installation of a Battery Energy Storage System at the Milford Regional Medical Center was executed as an EPC (Engineer-Procure-Construct) project. Milford was looking for resiliency and peak demand reduction for their campus. The new BESS supplements operation of the existing CHP system which included a packaged 800 kW 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, it 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 BAYSTATE MEDICAL CENTER MICROGRID LOCATION: Springfield, MA DESIGN START: July 2015 IN-SERVICE: December 2017 SIZE & TECHNOLOGY: Mercury 50 Gas Turbine Generator, Duct-fired, heat recovery steam generator, Steam absorption chiller, Black Start Reciprocating Engine, Natural Gas Compression System, Medium and low voltage switchgear FIRM ROLE: Engineer, Design, Equipment Procurement, Construction Waldron Engineering & Construction is the design-builder for a new natural gas fired Combined Heat and Power (CHP) project located at the largest level I trauma center hospital in western Massachusetts, Baystate Medical Center in Springfield. The project includes a new power plant building, the first Solar Turbines Mercury 50 Gas turbine generator to be permitted in Massachusetts, a duct fired heat recovery steam generator, a new steam absorption chilling system, a new natural gas compression system, a new black start reciprocating engine, new medium and low voltage switchgear as well as modifications to an existing steam and chilled water plant. The project’s equipment has also been engineered for the future installation of a hot water system to further reduce the hospitals energy costs and carbon footprint. Waldron’s prime construction subcontractor on the project is Cianbro Corporation. The project has a unique financing structure that includes a federal grant from the department of housing and urban development, incentives from the local electric utility and grants from the state of Massachusetts. The project will provide energy cost savings for the medical center for years to come.

< Back to all projects BRIGHAM & WOMEN’S HOSPITAL MICROGRID DESIGN START/COMPLETION: February 2013 – July 2014 SIZE & TECHNOLOGY: 4 MW Reciprocating Engine Generator, 125 psig Waste Heat Boiler, Jacket Water Heat Recovery, (2) 700 BHP Firetube Boilers IN-SERVICE: Summer 2016 FIRM ROLE: Feasibility Study, Schematic Design, Design Development, Detailed Design Waldron Engineering & Construction, Inc. performed an initial feasibility study for Brigham and Women’s Hospital (BWH) to evaluate the feasibility and economic value of installing a Combined Heat and Power Plant (CHP) in their new Brigham’s Building for the Future (BBF). The primary purpose for the CHP was to provide operational cost savings to the hospital and a level of resiliency to serve the energy needs of the facility. In addition to studying various CHP technologies, including combustion turbine generator and reciprocating engine generators, Waldron appraised the value of supplying electrical and thermal energy not only to the new BBF building, but also to the neighboring Shapiro building which is part of the Brigham and Women’s Hospital campus. Upon identifying that a 4 MW reciprocating engine based CHP was the optimal size and technology to serve the two buildings, Waldron executed the detailed design of the entire central energy plant. Waldron served as the engineer of record for the project which included a 4 MW recip-engine based CHP plant with dual fuel firetube boilers that were installed in the basement of Brigham & Women’s Hospital Building for the Future in Boston.