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< 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 NATIONAL INSTITUTES OF HEALTH LOCATION: Bethesda, MD STUDY DATE: May 2016 – April 2017 SIZE & TECHNOLOGY: Combustion Turbine, Chilled Water Storage, Electrical Distribution System FIRM ROLE: Feasibility Study NAICS: 541330, 237130, 237120, 236220, 221112, 221117, 221118, 221121, 221122 Waldron performed a comprehensive utility study for NIH to evaluate the possibility of expanding the existing utility plant. The campus is presently served by a nominal 23 MW cogeneration facility, which is located adjacent to an existing thermal plant consisting of 60,000 tons of nameplate chilled water production capacity, with both steam and electric motor driven chilling capabilities, and five boilers with a nameplate production capacity of 800 kpph. Waldron developed a model for the entire campus utilizing existing utility data, and taking into account infrastructure upgrade projects that were planned, but not yet implemented, including an upgrade to the existing combustion turbine, a modification to the campus electrical distribution system, and the introduction of approximately 8 million gallons of chilled water storage. As part of the analysis Waldron reviewed fuel supply opportunities with local utility, identified electrical switchgear upgrades that would be required to support a new cogeneration option, and analyzed multiple sizes and types of generation to identify the optimal technology and size for additional on-site power generation. As part of the analysis, Waldron reviewed air emission constraints on generator sizing as well.

< Back to all projects MONTCLAIR STATE UNIVERSITY MICROGRID LOCATION: Montclair, NJ DESIGN START/COMPLETION: Spring 2011 – Spring 2012 SIZE & TECHNOLOGY: 54 MW Electric 52,000 lb/hr steam, 43,000 tons chilling / 1-Solar Taurus 60 / 1-Rentech HRSG / 1-York Model YK Electrically driven Centrifugal Chiller / 1-York Model YST Steam-driven Centrifugal Chiller SCHEDULE: In-Service 2013 FIRM ROLE: Engineer of Record The Montclair State University combined heating, cooling and power plant (CHCP) became fully operational in September 2013. The goal of the project was to provide the expanding 250-acre campus with efficient and environmentally friendly energy to meet its growing needs. The state-of-the-art facility was designed to provide 100,000 pounds/hr of 125 psig steam, 4300 tons of 42 °F chilled water and 5.4 MW of electrical power to the campus’ academic, administration and residential buildings. The project also included new steam and condensate distribution piping and chilled water supply and return distribution piping to the campus buildings. Waldron’s scope of work included full mechanical, electrical, instrumentation controls, civil, structural and architectural design and engineering services. Waldron worked closely with the project developer, DCO Energy and the University to ensure that all project programming goals were met. The specified and installed equipment is highlighted by a dual fuel, 5.4 MW (nominal) Solar Taurus 60 gas turbine-generator and a 52,000 pound/hr Rentech heat recovery steam generator which includes a natural gas-fired duct burner. Other major equipment included, two packaged auxiliary boilers, one steam turbine-driven centrifugal chiller, one electric-driven centrifugal chiller, cooling towers and medium and low voltage electrical switchgear.

< Back to all projects SIMMONS UNIVERSITY INFRASTRUCTURE IMPROVEMENT PROJECTS LOCATION: Boston, MA DESIGN START: February 2011 PHASE I & II COMPLETE: 2012 PHASE III COMPLETE: 2016 FIRM ROLE: Owner’s Engineer Services, Construction Support, Start-Up & Commissioning Assistance Simmons University retained Waldron Engineering to perform work on various infrastructure improvement projects at their Boston campus. Phase I involved the development of design plans and specifications for the complete replacement of direct-buried steam and condensate distribution piping at the residence campus. The piping network serves the heating and domestic hot water needs of eight student housing buildings and a dining/administration building. Waldron also performed construction support services during the fast-track installation. Phase II was to examine options for a complete relocation of the primary electrical service at the main campus. Drawings and specifications of the preferred option were then developed for the relocation effort. Waldron’s scope also included utility coordination, construction support services and start-up assistance. Phase III involved developing and assisting with the implementation of a phased plan for the complete replacement of boilers and auxiliary steam plant equipment at the main campus Central Heating Plant. Phase 1 and 2 of the project were successfully completed in 2012 with two new boilers going online and Waldron completed Phase 3 in early 2016.

< Back to all projects ERVING INDUSTRIES MICROGRID PROJECT LOCATION: Erving, MA DESIGN START: November 2014 SIZE & TECHNOLOGY: 5.6 MW Solar Turbine, Taurus 60 dual fuel combustion turbine with duct-fired heat recovery steam generator IN-SERVICE: December 2015 FIRM ROLE: EPC (Engineer, Procure, Construct), Commissioning Waldron served as the EPC (engineer, procure, construct) contractor for the Erving Paper CHP Project. The job consisted of a new CHP and building located adjacent to the mill’s existing steam plant, and included a Solar Turbines Taurus 60 dual fuel combustion turbine with a duct-fired, 600-psig heat recovery steam generator, connection to the mill’s existing compressed natural gas delivery system, a synthetic natural gas (propane + air) mixing system for secondary fuel to the duct burner, a revised 13.8 kV electrical interconnection with new switchgear, a black start generator, and various upgrades to the existing utility systems necessary to accommodate the project. Waldron worked with the mill and a team of subcontractors to complete engineering, procurement, construction and commissioning of this fast-track project within eighteen months from notice to proceed, working within and around the operating mill.

< Back to all projects PORTSMOUTH NAVAL SHIPYARD LOCATION: Kittery, ME SIZE & TECHNOLOGY: One—1.5 MW/2.5 MW-HR Energy Storage System DESIGN START: 2019 IN SERVICE: Spring 2021 FIRM ROLE: Engineer of Record Ameresco expanded the existing Combined Heat & Power (CHP) plant at the Portsmouth Naval Shipyard (PNSY) in Kittery, Maine. The CHP offset electrical purchases from the incumbent electrical utility and simultaneously produced steam to meet the facility’s requirements. Waldron’s scope included all engineering and the preparation of a detailed construction documents package to include all mechanical, electrical, civil-structural and instrumentation-controls requirements for the project. As part of the CHP expansion was the addition of one 1.5 MW/2.5 MW-hr Battery Energy Storage System (BESS). The BESS was attached to the CHP to create a hybrid-CHP microgrid. One 7.6 MW gas turbine generator One natural gas compressor package One heat recovery steam generator (HRSG) with fuel assisted firing (duct burner) capable of producing up to 70,000 lb/hr of steam at 200 psig and 420°F A new fully upgraded PLC-based control system for all new and existing CHP plant equipment. One (1) 1.5 MW/2.5 MW-hr Battery Energy Storage System The new CHP and BESS ties into and connects to the existing steam, condensate, water, sewer, and electrical systems. It has an automated MV switchgear and microgrid control system.

< 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 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 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.

< Back to all projects JAMAICA BROILERS LOCATION: Spring Garden, Jamaica IN-SERVICE: 2002 SIZE & TECHNOLOGY: 15 MW Heavy Oiled Fired Reciprocating Engine FIRM ROLE: Owner’s Engineer Waldron Engineering was engaged to develop a design concept for a cogeneration plant at a food processing facility. The plant size was 15,300 KW with 50,000 lbs/hr of steam generation. The prime movers for this project are multiple #6 oil fired Wartsilla reciprocating engines exhausting into a single heat recovery steam generator, a dual fuel package boiler and a hot water absorption chiller. Waldron Engineering oversaw the letting of the EPC contract and the commissioning of the plant systems as the Owner’s Independent Engineer.

< 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 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.