Services » Geotechnical and Drainfield Design

KBJW’s staff of experienced geotechnical engineers and geologists provide our clients with needed geotechnical and special inspections services from project inception to completion. Our geotechnical team has experience in a broad range of project types from residential, commercial, industrial, transportation to educational facilities.

We specialize in site evaluation and design assistance throughout the complex geologic conditions of the Mid-Atlantic region. Upon completion of preliminary design and evaluation services, our staff of engineers and highly trained technicians provide the necessary testing and inspection services to meet today’s project specifications and building code requirements.

Our field staff is backed up by our in house U.S. Army Corps of Engineers and AASHTO certified testing laboratory. KBJW’s geotechnical team is an integral part of our clients’ development and construction teams.



  • Preliminary Geotechnical Site Analysis
  • Shrink / Swell Soil Analysis
  • Compaction Testing using Nuclear Density Gauge
  • Proofroll Inspections
  • Permeability Testing
  • Saturated Hydraulic Conductivity Testing
  • Special Inspections and Testing
  • US Army Corps of Engineers and AASHTO Certified Laboratory

Drainfield Design (Sewage and Septic)

  • Feasibility Studies for preliminary development plans
  • Location and Design of Onsite Sewage Disposal Systems
  • Location and Design of mass drainfield systems for multi-family residential and commercial sites
  • Conventional & Alternative System Designs
  • Inspection of Septic System Installation
  • Saturated Hydraulic Conductivity Testing