Oregon Avenue Sewer Reconstruction Project Environmental Permitting and Compliance Services

EBA provided environmental and geotechnical engineering and materials testing services for the installation of 4,300 linear feet of sanitary sewer line as part of the Oregon Avenue NW Sewer Rehabilitation in Washington, DC. Our efforts helped to address groundwater discharge from construction activities into the District of Columbia Municipal Separate Stormwater Sewer System (MS4).

Environmental engineering services included performing required groundwater sampling and testing, comparing analytical results to District of Columbia Water Quality Standards, preparing permit applications for five distinct discharge locations, and securing final permits from the Water Quality Division of the Department of Energy and Environment (DOEE). Following discharge permit acquisition, EBA’s weekly and monthly monitoring involved collecting samples and creating monitoring logs and monthly reports for all discharge locations; reviewing laboratory reports and evaluating exceedances of contaminant discharge limits, in accordance with MS4 permit requirements; and serving as a liaison with the DOEE to address compliance reporting requirements.

Geotechnical engineering and materials testing services included developing a mix design for annular grout to fill installation voids, concrete and grout sampling during construction, and laboratory testing of concrete and grout for compressive strength and soils for suitability as backfill in open-cut areas.