The Infrastructure Improvement Project significantly updated a large portion of Amherst College’s systems that support every facility on campus. Client: Amherst College Designer: BVH Integrated Services Conversion of the campus-wide primary electrical distribution from 4,800 volts to 13,800 volts. Switchover of all main utilities. Steam, water and chilled water system upgrades. Storm… View Article
Baileyville Compressed Natural Gas (CNG) Station was an EPC contract awarded to DOC which included the design and construction of a fast fill CNG trailer loading station. The station consisted of four Ariel Compressors and two PSD dryers with a max thru put of 8000 SCFM at 4000 psi. The station is completely automated to… View Article
As Design/Builder, Daniel O’Connell’s Sons collaborated with NEFCO (an O’Connell subsidiary) in the design, permitting, construction and operation of this new heat drying facility in Cumberland, Maryland. Client: City of Cumberland, MD Designer: Tighe & Bond Engineers Capacity: 11 dry tons/day Existing building renovated to receive and process digested sludge from… View Article
The City of Detroit selected the Design/Build team of NEFCO (an O’Connell subsidiary) and DOC for the design, permitting, construction, and operation of a new Biosolids Drying Facility. Client: Great Lakes Water Authority Designer: Tighe & Bond Engineers, Wade Trim Size: 47,500 SF Capacity: 20 dry tons/day Constructed on a… View Article
The work included of installation of a new Biogas Cogeneration System at the Bucklin Point Wastewater Treatment Facility in East Providence, RI. Client: Narragansett Bay Commission Designer: Brown & Caldwell Size: 46 MGD New concrete equipment pad. New biogas conditioning equipment. Gas blending equipment. Biogas fueled cogeneration equipment. Associated heat recovery… View Article
Work consisted of modifications to provide improved nitrogen removal at the Bucklin Point Wastewater Treatment Plant located in East Providence, RI. Client: Narragansett Bay Commission Designer: CDM Smith Size: 46 MGD Six new final clarifiers. Two new sludge thickeners. New sludge pumping station, RAS Pump vault and force main. Modifications to… View Article
An extensive gas yard upgrade, this project consisted of Mechanical, Civil and Electrical work done for Spectra Energy in Burrillville, RI. Daniel O’Connell’s Sons served as the Civil subcontractor and handled all site preparation to include an in-depth analysis of the preliminary layout, extensive safety coordination with other subcontractors, and protection of utilities external to… View Article
Part of Boston’s Central Artery project, construction of Vent Building No. 4 included fresh air intake and exhaust vent stacks for the new underground Central Artery, a 310-car parking garage, and renovations to the MBTA’s Haymarket Station. Client: MassDOT Designer: Bechtel/Parsons/Brinkerhoff Size: 65,000 SF New Vent Building consisting of three levels… View Article
This project completed CRPCD’s Capital Improvements Plan with Phase C focused on improving phosphorus removal and the disinfection system. Client: Charles River Pollution Control District Designer: Kleinfelder SEA Size: 5.7 MGD Improvements to phosphorus removal capabilities. Replacement of the disinfection system. New instrumentation and control systems. New mechanical processing equipment. Modification… View Article
Construction of a new discfilter phosphorous reduction system and building enclosure at the MWRA Wastewater Treatment Plant in Clinton, MA. Client: MWRA Designer: Stantec Size: 3 MGD 1-story masonry Phosphorus Reduction Building foundation and superstructure. New submersible disc filter influent pumps and automatic backwash disc filter equipment. New mechanical mixers and… View Article
This project involved the replacement of steel hydropower surge tank at the Cobble Mountain Powerhouse in Granville, MA. Client: Springfield Water & Sewer Commission Designer: CDM Smith Size: 207 FT tall surge tank Demolition of the existing 207’ tall, 25’ diameter steel standpipe, taken down in sections. New 207’ tall replacement… View Article
Rehabilitation adn cleaning of Primary and Secondary Clarifiers at the Deer Island Wastewater Treatment Plant serving the greater Boston area. Client: MWRA Designer: CDM Smith Size: 1,200 MGD Cleaning and repairs in 48 primary clarifiers and 54 secondary clarifiers. Each clarifier was cleaned, and any necessary concrete, expansion joint and Linabond… View Article
Part of a larger CSO project in the city of Fall River, MA, this project involved construction of a new screening and disinfection facility. Client: City of Fall River, MA Designer: CDM Smith New multi-functional building. Underground screening and disinfection facility. Two 6 MGD pumps. Eight grinder pumps. New chemical contact tank…. View Article
This project consisted of upgrades to Rhode Island’s largest wastewater treatment facility in order to reduce the total amount of nitrogen discharged into Narragansett Bay. Client: Narragansett Bay Commission Designer: Kleinfelder SEA Size: 200 MGD Project Features New Integrated Fixed Film Activated Sludge (IFAS) process for Nitrification. Aeration tanks subdivided into… View Article
Replacement of turbine Unit #2, originally installed in 1904, at the Gardner Falls Hydroelectric Facility located on the Deerfield River in the town of Buckland, MA. Client: Essential Power Massachusetts LLC Designer: Kleinschmidt Size: 3.5 MW Support of excavation system and underpinning systems. Excavation support system consisted of drilled-in minipiles and… View Article
Construction of a new water treatment plant to remove iron and manganese from the well water. Client: Town of Franklin, MA Designer: CDM Smith Size: 1.22 MGD Project Features New 5,195 SF water treatment plant building Two pressure filtration vessels Cast-in-place concrete tanks Process equipment Modifications to Well Stations Nos. 3 and… View Article
This fast-paced project involved repaving of Runway 11-29, the most-used runway at Hanscom Air Field located in Bedford, MA. Client: Massachusetts Port Authority Designer: McFarland Johnson Size: 7,000 FT runway Milling and rubblizing the original concrete runway below. Paving and striping new asphalt. Reclaiming of the end areas. Totaled over 50,000… View Article
The project included the construction of a new Airport Rescue and Firefighting Facility (ARFF) / United States Customs and Border Protection Facility (CBP) at Laurence G. Hanscom Air Field. Client: Massachusetts Port Authority Designer: saam architecture Size: 11,000 SF Photography: 2019 Christian Phillips Project Features Meets all the… View Article
Installation of a new rubber flashboard for Holyoke Gas and Electric Company to allow adjustment of the dam crest elevation at various river flows. Client: Holyoke Gas and Electric Company Designer: Northeast Generation Services Removed several feet of original dam crest. Air supply ducts placed. New concrete dam crest and pier walls…. View Article
This aggressively paced project involved the performance of all Civil work for a new power substation as a subcontractor for State Electric Corporation. Client: Holyoke Gas and Electric Company Excavation, ductbanks and backfill. Caissons and foundations. Precast structures. Soil stockpiling, testing and disposal of contaminated soils. Completed in six months.
Construction of a new combined aircraft rescue and firefighting (ARFF) and snow removal equipment (SRE) building. Client: County of Duchess Department of Public Works Designer: C&S Companies Size: 13,000 SF Photographer: C&S Companies Project Features Custom curved roof over the maintenance garage Exterior façade elements include masonry, storefront and three types… View Article
As part of SWSC’s broader system improvement program, this project involved rehabilitation of the antiquated systems at the Indian Orchard Pump Station in Springfield, MA. Client: Springfield Water & Sewer Commission Designer: MWH Americas Inc. Capacity: 35 MGD Complete gutting of pumping and mechanical systems in the pump station. Four new… View Article
This project included the installation of ultraviolet (UV) disinfection equipment at the John J. Carroll Water Treatment Plant in Marlborough, MA. Client: MWRA Designer: CH2MHill (now Jacobs) Capacity: 405 MGD Twelve new in-line ultraviolet units. New HVAC and electrical systems controls. Demolition of concrete roofs and baffle walls in the two… View Article
This expansion of Maine’s Natural Gas distribution network included over 80 miles of new pipeline and nine regulator stations, which brings alternative heating fuel to 15,000 homes and businesses in the Kennebec River Valley. DOC was originally contracted by Summit Natural Gas of Maine to install a length of 8-inch mainline, and to manage and… View Article
Daniel O’Connell’s Sons served as the General Contractor for owner Liberty Utilities in their selective upgrading of two Liquid Natural Gas (LNG) stations. The first project was located in Tilton, NH and consisted largely of the replacement of underground glycol piping. DOC oversaw fabrication and installation of all piping to include the reconfiguration of the… View Article
This project for the Massachusetts Port Authority involved rehabilitation of Logan International Airport Taxiway C in East Boston. Client: Massachusetts Port Authority Designer: WSP, Inc. Milling and rubblizing existing Taxiway C. Paving and striping new asphalt. Construction of a new Stub Taxiway.
Replacement of two chillers at Logan International Airport’s Central Heating Plant. Client: Massachusetts Port Authority Designer: WSP, Inc. Project Features Two new centrifugal electric and steam turbine water chillers. New concrete equipment pads. New access doorway and rigging. Associated piping connections, pumps and piping. Removal of existing chillers.
Replacement of the Lyman Street Bridge superstructure over the first level canal in Holyoke, MA. Client: MassDOT Designer: Commonwealth Engineers, Inc. New steel beam bridge superstructure and reinforced concrete deck. Demolition and removal of the existing bridge. Earth excavation and backfill. Concrete abutments. Concrete sidewalks and CP-PL2 barriers. Relocation of existing utilities… View Article
Major process upgrade to the Mansfield-Foxboro-Norton Regional Wastewater Treatment Plant to treat all existing and future flow at more stringent nutrient limits. Client: MFN Wastewater Regional District Designer: CDM Smith Capacity: 4.14 MGD Four-stage Bardenpho process upgrade. New anoxic tanks and modifications to existing aeration basins. New aeration blower system. New secondary clarifier… View Article
The project involved construction of two new aeration tanks and two new final settling tanks at the Water Pollution Control Facility in Hartford, CT. Client: MDC Hartford Designer: Malcolm Pirnie, Inc. Capacity: 50 MGD Two new 90’ x 200’ concrete Aeration Tanks. Two new 125’ diameter concrete Final Settling Tanks. Heavy… View Article
Complete reconstruction of the seven-span, 1500-FT Memorial Bridge in Springfield, MA. The historic concrete bridge carries nearly 25,000 vehicles per day over the Connecticut River. Client: MassDOT Designer: Fay, Spoffard & Thorndike (now Stantec) Size: 1,500 FT Replacement of the entire deck system. 775 tons of steel. 12,000 CY of poured… View Article
The Michael S. Van Leesten Memorial Pedestrian Bridge was built on the existing piers from the old I-195 bridge across the Providence River. It connects downtown Providence with the College Hill and Fox Point neighborhoods. Client: Rhode Island Department of Transportation Designer: inFORM Studio Photographer: Steven Kroodsma Project Features Cast-in-place wingwalls Abutment… View Article
DOC was on call over the course of one year to service MIT campus-wide by improving infrastructure in both emergency and non-emergency situations. Major components of the work done for the institute include the modernization of several sections of steam and water piping. Client: Massachusetts Institute of Technology Designer: Vaughn Crayton Located… View Article
National Grid updated an existing yard and installed two new 7.5 kVA transformers. Daniel O’Connell’s Sons was responsible for the site and concrete work as a Civil subcontractor to the construction manager. The project required demolition of the existing foundations and construction of new foundations, with containment systems and related yard structure foundations. DOC made… View Article
National Grid replaced twelve 230 kV Oil Circuit Breakers in a project updating the facility in Comerford, NH. Daniel O’Connell’s Sons served as the Civil subcontractor to the construction manager and was responsible for the demolition and replacement of foundations for the new units. The project was sequenced over several scheduled outages in order to… View Article
National Grid converted the Monroe station from high voltage Direct Current conversion yard to an Alternating Current terminal. Daniel O’Connell’s Sons served as the Civil subcontractor to the construction manager and was responsible for a portion of the foundation installation work. Thirty structure foundations and two transformer containment systems were installed as part of an… View Article
Daniel O’Connell’s Sons was the Civil/Structural contractor for upgrades to National Grid Palmer substation in Palmer, MA. DOC installed new foundations for transformers and a dead end structure. The project also included an updated grounding and drainage system.
As part of Northfield Mount Hermon School’s plan to consolidate all operations onto one campus, DOC was retained as design/builder for infrastructure work to support proposed and existing buildings. Client: Northfield Mount Hermon School Designer: Berkshire Design Group New steam and condensate line along the inner loop. Sanitary sewer system replacement. Expansion… View Article
Daniel O’Connell’s Sons was hired by NSTAR Electric to install 17,000 linear-feet of 8-inch continuously welded steel pipe throughout the city streets of Cambridge, MA, while maintaining all traffic flow and existing utilities with minimal impact to customers and abutters. DOC was responsible for coordination with the client, city, and numerous agencies in the redesign… View Article
Construction of a new dam structure and related appurtenances at the Deans Mill Reservoir and Water Treatment Plant in Palmer, CT. Client: Aquarion Water Company Designer: Tighe & Bond Reconstruction of the dam structure, spill containment area, water mains, and crest gates. Steel sheet cofferdam cells installed to hold back 88 million… View Article
Upgrades to the existing Plainville Water Pollution Control Facility to meet phosphorus removal regulations. Client: Town of Plainville, CT Designer: Tighe & Bond Engineers Size: 2.6 MGD Project Features New concrete and masonry Filter Building New disc filtration system New Rotary Drum Thickener Relocation of UV disinfection system Plumbing, HVAC, and electrical… View Article
Upgrade of the MWRA’s Brutsch Water Treatment Facility located at the Quabbin Reservoir in Ware, MA to included UV treatment as a second means of primary disinfection. Client: MWRA Designer: AECOM Capacity: 7.7 MGD New UV Chamber addition. Three new Calgon 24-inch Sentinel UV disinfection units and ancillary equipment. New valve… View Article
Construction of a concrete gate structure built just north of the existing S-333 Structure to provide additional operational flexibility and conveyance of flows to Everglades National Park. Client: South Florida Water Management District Designer: Erdman Anthony Size: 1,150 cfs Project Features New concrete two (2) gate spillway structure Canal excavation Levee construction… View Article
Construction of a new Tertiary Treatment Facility at the Smithfield WWTP in Rhode Island. Client: Town of Smithfield, RI Designer: Wright-Pierce Engineers Capacity: 3.5 MGD New Tertiary Treatment Building. New Ballasted Microsand Flocculation Tertiary Treatment System. Additions to the Administration/Sludge Handling Building ferric chloride feed equipment. New lime silo and feed… View Article
Construction of a new North End Pedestrian Underpass beneath the Connecticut River Railroad between Plainfield Street and Birnie Avenue in Springfield, MA. Client: MassDOT Designer: HDR Architects & Engineers Project Features Installation of the 52-foot long precast concrete tunnel structure under tracks Concrete retaining walls Paved multi-use path Security provisions include active and… View Article
Construction of a new Storrow Drive/Leverette Connector Bridge, connecting Boston’s Storrow Drive with Interstate-93. Part of the Central Artery project, this bridge is one of the largest single-cell trapezoidal steel box girder bridges in North America. Client: MassDOT Designer: HNTB Corporation Size: 830 FT Three‐span bridge structure with a main span… View Article
DOC completed the installation of 34 10″ fitting replacement of varying bend degrees and angles, in a variety of challenging lane closure and traffic patterns. We also managed and supported five additional HDD sites, ranging between 712 FT to 2085 FT, and one 180 FT jack and bore railroad crossing. The project also included four station… View Article
DOC was selected by Summit Natural Gas of Maine to install four natural gas regulator stations. DOC managed construction of these stations from the ground up. Each station is equipped with a water bath heater and over pressure protection devices. The Madison regulator station is capable of providing 860,000 cu ft/hr to consumers. Waterville, Skow-Nor-Tee, and Skowhegan… View Article
The project was in two separate places on the UMASS Amherst campus and consisted of utility upgrades of steam and condensate piping to service the future central heating plant. Client: UMass Building Authority Designer: R.G. Vanderweil Engineers New concrete and precast utility tunnels. Duct banks, manholes and vaults. Steam and condensate piping… View Article
Restoration and renovation of the long-vacant, 1926-built Union Station into a modern transportation facility for the city of Springfield. Client: Springfield Redevelopment Authority Designer: HDR Architects & Engineers Size: 120,250 SF Complete gut restoration of the 120,250 SF Main Terminal building. 24-bay bus terminal. 377-space precast concrete parking garage (70,000 SF)…. View Article
Phase III of this comprehensive upgrade included improvements to the solids management facilities at the Upper Blackstone WWTF, which services the greater Worcester area. Client: Upper Blackstone Valley Pollution Abatement District Designer: CDM Smith Capacity: 45 MGD Delivered under a CM-at-Risk approach with preconstruction services. Upgraded dissolved air flotation units. New… View Article
Demolition, reconstruction, and upgrades to the Uxbridge Wastewater Treatment Facility to meet Biological Nutrient Removal goals. Client: Town of Uxbridge, MA Designer: GHD Inc. Size: 2.5 MGD Project Features Enlargement of the three existing Aeration Basins New Aeration Basin No. 4 New Gravity Thickener No. 2 New Secondary Clarifier New Filtration and… View Article
Daniel O’Connell’s Sons was contracted by Wellesley College to guide them through a series of critical, center-of-campus infrastructure upgrades. Client: Wellesley College Designer: BVH Integrated Services New steam and condensate piping. Telecommunications and electrical duct banks. Chilled water piping. Storm drainage piping.
Addition of a phosphorous removal system was added to the existing facility to upgrade discharged water quality at the West Warwick, RI WWTP. Client: Town of West Warwick, RI Designer: James J. Geremia & Associates Capacity: 5 MGD New concrete Phosphorus Removal Building. Ballasted phosphorus removal system. New precast concrete diversion… View Article
Construction of a 20 million-gallon covered drinking water storage facility to provide higher and more stable water pressures to a large service area in the metropolitan Boston vicinity. This project encompassed a small portion of the rebuilding of the century-old Hultman Aqueduct. Client: MWRA Designer: Sverdrup Civil, Inc. Size: 20 Million Gallons… View Article