Civil Engineering

Our Engineering staff will help manage your project from the conceptual stage, through the permitting process, and finally to completion.

We provide the following Professional Engineering services:

  • Septic System Design and Permits
  • Alternate Treatment Unit (ATU) Septic System Design
  • Pinelands Septic System Design
  • Select Fill Testing
  • Soil Erosion and Sediment Control Plans
  • Grading Plans

Land Surveying

Our in-house licensed land surveyor and professional planner will provide you with the accurate and efficient services you need to advance your project forward. We provide professional land surveying services, including:

  • Boundary and Topographic Surveys
  • Flood Plain Elevation Certifications
  • Plot Plans – Proposed Developments


Johnson Design Associates, Inc. has extensive experience in dealing with the New Jersey Pinelands Commission and the New Jersey Department of Environmental Protection. We can act as an Agent for our client and manage the entire application process beginning to end for any type of Pineland or Wetlands permits.

Soil Testing

Johnson Design Associates, Inc. has a fully equipped soils lab on site with respect to testing for the permeability of a given soil, including grain size analysis, percolation rate, and hydrometer testing. We also provide sieve testing for various applications depending on the needs of our clients which include other engineering firms, septic installers, building contractors, local health departments and single-family homeowners. Because we maintain our own soils lab and a full-time lab technician, we are able to respond to our clients need in a timely fashion.


Johnson Design Associates, Inc. will be your first source of information and advice with respect to your proposed project. We can gather information from the land records, zoning regulations, topography, the location of existing structures, property lines and soil investigation. The management and presentation of this information will allow the client to make well-informed decisions on how to proceed with a project.

Next Steps…

If you are ready to begin your project, or if you have some questions before you get started, please contact us!

Get Started