Phase I, Dulles Metro Rail

    This project involved the design and construction of a 23.1-mile extension of the existing 103-mile long WMATA rail system. Upon completion, Dulles Metrorail will provide high-quality, high-capacity transit service in the Dulles Corridor. New Metrorail service in the corridor will result in travel time savings between the corridor and downtown D.C., expand the […]

Phase II, Dulles Metro Rail

The Dulles Corridor Metrorail Project (DCMP) is undertaken by MWAA in partnership with Fairfax and Loudoun Counties, as well as the Commonwealth of Virginia.  Phase 2 of the DCMP starts from the Wiehle-Reston East Station and will extend the Silver Line 11.4 miles west into Loudoun County, VA.   It will include six new stations, Reston Town Center, Herndon, Innovation Center, Washington Dulles International Airport, Route 606, and Route 772 Ashburn. Five of the new stations will be built on ground level.  An aerial station will be constructed at Dulles International Airport.

 

DMY is currently working on this project providing both field and engineering services including geotechnical drilling, rock coring, rock pressuremeter tests and data analysis, borehole logging and field work coordination.  Special challenges include very stringent drilling fluid and siltation control requirements, complex field work coordination with the Design-Builder, MWAA, VDOT and other team members.  DMY, as one of the few geotechnical companies with the expertise of rock pressuremeter testing and data interpretation, successfully performed rock pressuremeter tests in boreholes down to 65 feet deep in challenging geological conditions and obtained valuable data to support the deep foundation design.

 

Project Location  –  Fairfax and Loudoun Counties, Virginia

Project Owner  –  Metropolitan Washington Airports Authority (MWAA)

Project Client  –  Capital Rail Constructors/Schnabel Engineering

Project Completion  –  2018 (projected)

 

 

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Interstate 66 Active Traffic Management

The $38 million project will install an active traffic management system on a 34 miles stretch from I-66 through Arlington, Fairfax and Prince William counties from the Washington, D.C. line to Route 29 in Gainesville.

 

The system will improve safety and incident management and include new sign gantries, shoulder and lane control signs, speed displays, incident and queue detection, and increased traffic camera coverage. Drivers will see the new overhead sign gantries installed between the Beltway and Route 29 in Centreville.

 

DMY is currently working on this project to provide QC inspection and testing services during clearing & grubbing, E&S controls, MOT, subgrade preparation, backfill, asphalt, concrete, and foundations.  DMY has provided a QC Manager, QC Coordinator, and several inspectors to ensure the proper compliance of the work with VDOT requirements.

 

Project Location  –  Various Locations in Northern Virginia

Project Owner  –  Virginia Department of Transportation (VDOT)

Project Client  –  TransCore ITS, LLC

Project Completion  –  2015 (Projected)

 

 

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DC Water Main Process Train

DC Water recently completed work at the Main Process Train of the Blue Plains Advanced Wastewater Treatment Plant. The design-build project included the rehabilitation of four solids blending tanks, installation of 12 new strain screens in a new screenings building, a pre-dewatering building that houses 10 pre-dewatering centrifuges, four trains of Cambri’s thermal hydrolysis treatment (THP), a digester building including pumping and cooling heat exchangers, and the construction of four 3.8 gallon digesters and associated odor control equipment.

 

DMY provided construction materials testing and special inspection services. The work included field and laboratory testing for soil and aggregate, concrete and grout sampling testing, and inspection of the installation of 477 auger-cast-piles and 144 drilled piers. This was the first project where DMY implemented DMY Manager®, its web-based electronic management and report system. This system allowed DMY engineers and field staff to efficiently manage the project and effectively control the quality of the deliverables.

 

Project Location – Washington, DC

Project Owner – DC Water

Project Client – PC Construction/CDM Joint Venture

Project Completion – 2015 (Projected)

 

 

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Bruce-Monroe Community Park

This project is an interim urban park development consisting of a tennis court, two basketball courts, a parking lot, playgrounds, stormwater management facilities and a community garden.  This interim park was constructed on the demolished former Bruce-Monroe school site.  The site design successfully incorporated the nature aspects into an urban environment by utilizing features like rain gardens and community garden.

 

DMY performed geotechnical investigations including soil test borings, in-situ soil infiltration testing and laboratory soil classifications per DDOE requirements, and provided geotechnical recommendations for the design and construction of the stormwater management facilities and other onsite structures. DMY also provided the construction materials testing and inspection services during the construction phase of the project. The total project construction cost was about $2,000,000.

 

Project Location  –  Washington, DC

Project Owner  –  DC Department of the Deputy Mayor for Planning and Economic Development (DMPED)

Project Client  –  DC Department of the Deputy Mayor for Planning and Economic Development (DMPED)

Project Completion  –  2010

 

 

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Carter G. Woodson Park

This project involved the construction and improvement of an existing park located on the triangle formed by the intersection of Rhode Island Ave, 9th St, and Q St NW in Washington, DC. Several large trees surround the park along Rhode Island Street NW and 9th Street NW, while smaller trees are planted along Q Street NW. The site is flat and has an elevation of EL 81 ft.  The construction consisted of improving the park with a statue and memorial honoring Carter G. Woodson at its center.  In addition, paver sidewalks were installed, along with a rain garden to serve as an infiltration facility for the site.

 

DMY’s scope of services included reviewing project information, obtaining the drilling permit from the DCRA and DDOE for field work, drilling borings and performing field infiltration tests in the cased borehole, evaluating field infiltration testing data and preparing a report.

 

Project Location – Washington, DC
Project Owner – District of Columbia Department of Parks & Recreation
Project Client – Lee & Associates, Inc.
Project Completion – 2013

 

 

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DC Streetcar – H Street, NE/Benning Road Line

This design-build project includes the construction of the western and eastern termini of the route for the streetcar, the overhead catenary that will deliver power to the streetcars, and the Car Barn at Benning Road-26th Street.  The first segment of the project includes laying out the track, utilities, retaining walls, and other associated site work.  The second segment of the project includes the construction of Car Barn building and maintenance yard.

 

DMY has been working on this project providing Quality Control construction materials testing and special inspection services which include field and laboratory testing for soil and aggregate, concrete and grout sampling and testing, and inspection of the bridge deck repair and drilled shafts for pole foundations.   DMY implemented its web-based electronic management and report delivery system – DMY Manager® to efficiently manage the project data.

 

Additionally, DMY prepared and is currently implementing a two level vibration monitoring program on this project for eleven (11) specified facilities along the project alignment.

 

Project Location – Washington, DC

Project Owner – District Department of Transportation (DDOT)

Project Client – Dean-Faccina Joint Venture

Project Completion – 2014

 

 

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DC Water – Biosolids Management Combined Heat and Power Plant

The Combined Heat and Power (CHP) project will make the Blue Plains Advanced Wastewater Treatment Plant (AWTP) the first in North America to use biogas from an AWTP facility.  The design-build portion of the CHP project is for $81 million and, upon completion; it will produce at least 14 MW of electric power that will supply the Blue Plains facility with nearly 30 percent of the AWTP’s average power demand. This is equal to the electricity required to power more than 8,000 homes.

 

The plant will also include three Solar Mercury 50 low nitrogen oxide gas turbines, digester gas cleaning and compression equipment, heat recovery steam generators, duct burners, a backup boiler, and electrical equipment needed to operate in parallel with the utility grid and ancillary systems.

 

DMY is currently working on this project providing special inspection and construction materials testing services which include field and laboratory testing for soil and aggregate, concrete and grout sampling and testing, and inspection of the installation of auger-cast-piles.  Structural steel inspection is also a major part of special inspection services.

 

Project Location – Washington, DC
Project Owner – DC Water
Project Client – PEPCO
Project Completion – 2013

 

 

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Simon Elementary School

This project used geotechnical engineering services to support the design of the Simon Elementary School Playground project in Washington DC.  The new features included two rain gardens, two bioswales, pavement areas, trails and an amphitheater. A total of seven infiltration tests were conducted for the rain gardens and bioswales. Infiltration test borings were drilled to about two feet below the anticipated facility bottom to perform the field infiltration tests. DMY also drilled four soil test borings varying from 5 to 10 feet in depths at the pavement and amphitheater locations.  Subsurface soil/rock and groundwater conditions were obtained at each of the boring locations. Standard Penetration Tests (SPT) were conducted in all the borings to check for soil strength.

 

DMY provided geotechnical engineering services on this DGS/DDOE/DCPS pilot program.  As part of initiatives to rehabilitate local rivers, Simon Elementary School Playground renovation project served as a pilot showcasing opportunities for marrying play and sustainability. The proposed construction reduces pavement and introduces rain gardens for cleansing and infiltration, and incorporates a variety of play features including a basketball court and hard surface play areas, play equipment, and climbing mounds.

 

 

Project Location – Washington, DC

Project Owner – DC Public Schools

Project Client – LandDesign, Inc.

Project Completion – 2013

 

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