Core Competencies

Earthwork icon

Earthwork + Grading

From production earth moving, to fine grading projects that require meeting precise tolerances, D-Line has built a variety of earthwork and grading projects throughout the Bay Area. Our fleet of modern grading and excavation equipment, combined with the use of Trimble and Agtek survey models, has allowed D-Line to successfully perform projects that include:

  • Site Developments
  • Mass Excavation
  • Airports
  • Roads
  • Sports Fields
  • Commercial Sites
  • Levees
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Wet Utilities

D-Line has performed many types of utility projects and includes extensive experience installing storm drains, sanitary sewer systems, water lines, gas lines, drainage systems, fire lines, telephone, and electrical conduits.  Our crews have mastered working in many different ground conditions, and always follow OSHA excavation guidelines during the installation process.  The types of utility projects D-Line has completed includes:

  • Storm Drainage
  • Sanitary Sewer
  • Domestic Water
  • Fire Lines
  • Drainage Systems
  • Joint Trench
Demolition icon


D-Line’s expertise in demolition includes heavy wrecking of buildings, site demolition, selective demolition, and deconstruction for salvage.  We have performed these project types in sensitive facilities, active airport terminal buildings, congested neighborhoods, and on sites with limited access.  D-Line employees understand the risks associated with each demolition project performed and pre-plan so that these risks are mitigated.  D-Line has performed demolition on the following project types:

  • Airport Terminals
  • Commercial Buildings
  • Industrial Buildings
  • Educational Buildings
  • Fire Stations
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Environment + Habitat Restoration

D-Line strives to make the slightest impact on the natural environment when working, and we also take part in constructing environmental and habitat restoration projects.  Our staff has extensive knowledge of specialty materials and best management practices necessary to restore habitats to their natural state. The types of environmental projects that D-Line has completed include:

  • Streambed Restoration
  • Stream Bank Restoration
  • Erosion Control
  • Wetland Construction
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Dry Utilities

D-Line has extensive experience with the installation of dry utilities on its projects. Success with these systems not only occurs because of our technical knowledge related to the construction process, but also because of our ability to coordinate with various utility agencies. Whether it be coordinating with gas companies or telephone utilities, D-Line crews successfully install dry utilities with all stakeholders interests in mind. The types of dry utility projects D-Line has performed include:

  • Electrical
  • Cable
  • Telephone
  • Natural Gas
  • Television
  • Fiberoptics
Paving icon


D-Line has performed a wide variety of paving projects including the construction of new and existing parking lots, multilane roadways, and city intersections. Project types we have worked on include:

  • Airport Terminals
  • Multifamily Housing
  • Commerical Buildings
  • Roadways
  • Industrial Buildings
  • Educational Facilities