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< Back to all projects HANSCOM AIR FORCE BASE MICROGRID LOCATION: Middlesex County, MA DESIGN START: Winter 2017 IN-SERVICE: Spring 2020 SIZE & TECHNOLOGY: Solar Turbine 5.0MW FIRM ROLE: Engineering, Design Construction Support, Commissioning CONSTRUCTION COST: $20.5 Noresco is building a new Combined Heat & Power (CHP) Facility at Hanscom Air Force Base in Middlesex County, Massachusetts. The CHP will serve the site’s steam requirements and off-set electrical purchases from the incumbent electrical utility. The design scope includes preparation of a design package in sufficient detail for permitting, pricing, and construction by general, electrical, mechanical, civil & site utility subcontractors experienced with the installation of similar facilities. Waldron prepared the permit applications for the DEP Air Permit, Eversource Electric Interconnection, and the Pipeline Natural Gas Load Letter. The permit process was completed in 9 months. 5 MW Gas Turbine Generator Heat Recovery Steam Generators (HRSGs) with fuel assisted firing (duct burner) generating up to 40,000 lb/hr of steam at 100 psig Control System for the CHP plant that integrates the balance of plant equipment. Electric Load Management System The new CHP plant ties into the existing steam, condensate, water, sewer, and electrical systems.

< Back to all projects HOWARD M. DOWN GENERATING STATION LOCATION: Vineland, NJ DESIGN START/COMPLETION: Spring 2010 – Winter 2010 SIZE & TECHNOLOGY: 64 MW Trent 60 Gas Turbine / Dilution Air SCR / Natural Gas Compression / Utility Sub-Station IN-SERVICE: Spring 2012 FIRM ROLE: Engineering Vineland Municipal Electric Utility (VMEU) needed to expand the generating base within their service territory. A plan was developed to install 50 MW of capacity adjacent to the existing Howard Down generating station in downtown Vineland. Waldron was selected to be the engineer of record for the design of a new peaking facility. Waldron developed an equipment purchase set of specifications for a nominal 64 MW peaking gas turbine generator and SCR system. The bids were evaluated, and a recommendation was made to VMEU based on best value to select the Rolls Royce Trent 60 prime mover for the Howard Down Unit #11 . Waldron developed a detailed design package around the Trent 60 engine and supported VMEU in the selection and oversight of a general contractor to implement the design. The plant was placed in service on-time for the summer season, 2012.

< Back to all projects FRASER PAPER MILL/NEXFOR LOCATION: Edmundston, New Brunswick DESIGN START: 1995 DESIGN COMPLETION: 1998 IN-SERVICE: Commercial Operation beginning early 1998 SIZE & TECHNOLOGY: 45 MW net, Hydrograte Stoker, Biomass-Fired Boiler FIRM ROLE: Owner’s Engineer, Engineering, Construction Management and Commissioning Waldron Engineering was engaged to act as the owner’s engineering group during the development of a biomass fueled cogeneration facility for a 1300 ton per day paper mill in Edmundston. The installed facility generated 45 MW of electricity and an equivalent thermal load of 60 MW. Waldron developed the plant’s conceptual design. Additionally, Waldron dealt with boiler efficiency analysis, thermodynamic cycle design, and conceptual layout, technical and economic optimization of design. Finally, Waldron developed and evaluated the EPC contract bids. This project successfully meets all thermal output designed at concept. As of 1998 the Fraser Cogeneration Power Plant was the largest biomass-fueled boiler in North America.

< 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 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.

< Back to all projects YALE UNIVERSITY INVESTMENT GRADE STUDY LOCATION: New Haven, CT STUDY DATE: November 2011 FIRM ROLE: Investment Grade Study for Repowering the Central Utility Plant Waldron was selected by Yale University to develop a master plan for the repowering of the existing Central Utility Plant. The existing facility consists of three 5 MW gas turbines and heat recovery boilers that provide steam and electricity to the campus. The turbines are now at the end of their useful life. Waldron’s scope included the development of a Basis of Design document that quantified the future requirements for the Central Utility Plant. The requirements comprised thermal and electric load profiles, operational restraints, environmental requirements, and economic parameters. An operations model of the existing Central Utility Plant was developed to simulate the hourly operations of the plant serving the campus loads for a 20-year period, BAU case (Business as Usual). A series of alternatives were developed and run against the 20-year simulation to quantify the technical performance of the options operating against the campus loads. An economic model of the operations is linked to the simulation, taking into account utility rate structures, commodity costs, and other influences. The combined models provided a data set that was utilized for the selection of a preferred option to be refined in to an investment grade business case. The investment grade business case included a detailed construction cost estimate, linked to a construction plan, including rigging analysis and a phasing-in schedule. Detailed operating cost results were included from the 20-year simulation. Operations costs and maintenance costs were developed down to the individual staffing level, consumable consumptions, and LTSA quotations. A final set of project economics along with a probabilistic analysis was developed for presentation for the business case to the trustees.