The Georgetown Waterfront Park site is located on the former site of a power plant which powered the DC trolley system. It was rumored to contain considerable amounts of debris underground from the past 200 years. The second phase of the project is anticipated to be completed by the end of 2010. Once complete, Phase 2 will extend from Wisconsin Ave, NW to 31st Street, NW and will include the central plaza. The plaza will include a fountain, a pergola laced with flowing vines to shade park benches, and a stepped bulkhead along the Potomac River with designed seating.
Specialized Engineering was responsible for providing initial site characterization sampling, preparation of the Corrective Action Plan (CAP), testing and inspection services in accordance with the CAP, and monitoring of site excavation.
Specialized Engineering performed a subsurface investigation of Phase 2 due to the concerns of buried debris and unknown site conditions. Through numerous borings, Specialized Engineering determined there was a considerable amount of fill beneath the debris. It was recommended that the stepped bulkhead be supported on H-piles driven to the natural ground, which is estimated to be at a depth of more than 30-feet below the existing surface, along with the installation of a permanent sheet pile wall at the edge of the water to prevent scour of the bulkhead.
Additionally, Specialized Engineering continues to provide Geotechnical Consultation Services on an as-needed/on-call basis.
Additionally, Material Testing and Inspection Services are being provided on the following materials during construction:
Specialized Engineering is conducting laboratory testing and analysis of proposed fill/backfill/aggregate materials, and concrete cylinders, in addition to, verification of material quality in the firm’s AASHTO-accredited laboratories as per the project’s quality control program. Wish to learn more about our involvement with this project? Please contact us at 800-773-3808.