“Preliminary Engineering” is what is often referred to as “30% design.”  It is a methodical series of steps used to assess how a project might actually function.  Utilities can be evaluated during this process based on sound engineering practices and available data.  Potential site work can be examined to see whether sufficient or excess material is present onsite or must be imported/exported as a function of construction.  Cost estimation can be performed during the process and will validate assumptions made during the feasibility study.  We can provide expert preliminary engineering and incorporate developer comments to inform the potential end result.

When the developer is ready, and other processes have been performed sufficiently, you must have construction plans to direct contractors what to do and where, and to certify to reviewers that the design reflects thorough site evaluation and when constructed will perform as designed, ensuring the life, health, and safety of the community and environment it serves.  With years of experience, this is our bread and butter – we’ve performed this successfully many times in many jurisdictions

From obtaining existing conditions information and coordination with specific disciplines, such as Surveyors, Geotechnical Engineers, Environmental Engineers, Archaeologists, Biologists, Soil Scientists, and Architects (many of these services offered in-house), to clear and simple presentation of designs, we deliver buildable and permitable projects – the ultimate design goal.  Once approved, these plans will arm the contractor with all they need to realize the project’s potential.  We overcome the permit drawing hurdle and prepare the project for permitting.

A very specific portion of the design process – often stand-alone, and vital to development – is stormwater management and Best Management Practices design.  Development often changes the environment from what has been created over years, decades, centuries, or even millennia, and requires strategies to overcome potential problems that might otherwise result.  Development increases the amount of runoff a site generates even if only by virtue of speeding up the process of discharge.  Regeneration of groundwater is reduced and surface water must be handled before it does damage to onsite, adjacent or downstream properties and watersheds.

Speedy runoff increases the potential for soil erosion and transport of sediments offsite, and onto other properties or into systems that might be damaged.  This damage would have a cost to repair that would need to be mitigated. Our design efforts can reduce or eliminate that likelihood.  These specific designs are always part of overall design, but we can provide them as a stand-alone service if they are all that is required.



6511 Chillum Place NW

Washington, DC 20012

(202) 882-7733