1751 Elton Road
Suite 300
Silver Spring, MD 20903
Ph: 301.434.7000
Fx: 301.434.9394

3959 Pender Drive
Suite 210
Fairfax, VA 22030
Ph: 703.385.7555
Fx: 703.273.8595

804 Diamond Avenue
Suite 208
Gaithersburg, MD 20878
Ph: 301.208.9573
Fx: 301.926.4551

4920 Niagara Road
Suite 308
College Park, MD 20740
Ph: 301.220.0600
Fx: 301.434.9394

129 West Patrick Street
Suite 13
Frederick, MD 21701
Ph: 301.698.9788
Fx: 301.698.9789

45 Old Solomons Island Road
Suite 204
Annapolis, MD 20878
Ph: 410.266.5599
Fx: 410.266.3871


Public engineering represents one of the core services offered by CPJ. Our extensive expertise in engineering allows us to coordinate across multiple disciplines to produce innovative designs that exceed expectations for Municipal and County projects. Our vast history in working for public agencies has given us the experience to handle public outreach, limited budgets, and quick responses to public needs. In addition, our technical expertise allows us to confidently assess any situation and make a reliable recommendation for how to proceed. Office technology such as our computer-aided drafting and design (CADD) system and our geographic information system (GIS) allow us to remain ahead of the technology curve and maintain high productivity. The staff works closely with each Agency to keep them and all other stakeholders informed of job progress and to stay in touch with their needs. CPJ has a great deal of experience working for public sector clients to meet their civil engineering needs.

Services include but are not limited to:

General Engineering
  • Construction Plans and Specifications
  • Bid Documents
  • Cost Estimates
  • Public Meetings
  • Permit Processing
  • As-Built Plans
  • Construction Management and Inspections
  • GIS Database Development and Management
  • Expert Witness 
Highway Engineering
  • Sight Distance Analysis
  • Cross Section Development
  • Alignment Studies
  • Utility Relocation and Coordination
  • Pavement Marking and Signage
  • Traffic Control
  • Horizontal and Vertical Design
Site Development Engineering
  • Feasibility Studies
  • Preliminary Engineering Concepts
  • Sediment and Erosion Control
  • Utility Layout
  • Water Distribution Systems
  • Sanitary Collection Systems
  • Earthwork Calculations
  • Grading Plans
  • Storm Drain Design
  • Pavement Plan Design
  • Stormwater Management
  • Water Quality Plan Development
Water Resources Engineering
  • Hydrologic and Hydraulic Studies
  • Stormwater Management Design
  • Stormwater Management Retrofits
  • Storm Drainage Design
  • Culvert Design
  • Scour and Stability Analysis
  • Floodplain Studies
  • Dam Breach Studies
  • Dam Operation Manuals
  • Dam Emergency Action Plans
  • High Hazard Dam Inspections
  • SWM Facility Inspection to comply with NPDES
  • Confined Space Inspections
  • Stream Restoration and Monitoring
  • Watershed Studies
  • NPDES Permitting and Compliance Monitoring
© 2016 Charles P. Johnson & Associates, Inc.