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  • Civil engineering master planning, including site analysis

  • Support for environmental assessments (EA)

  • Support for environmental impact statements (EIS)

  • Flood and drainage studies

  • HEC-RAS hydraulics calculations and studies

  • FEMA Letter of Map Revisions (LOMR) permitting

       and approvals

  • National Pollutant Discharge Elimination System (NPDES) permitting and approvals

  • Erosion control plans and Best Management

  • Drainage systems

  • Grading reports

  • Earthwork calculations

  • Site retaining walls

  • Low impact development systems; including detention and retention systems

  • Water supply, distribution, and transmission systems

  • Wastewater treatment/distribution systems and pump stations

  • Fire protection systems

  • Anti-terrorism force protection/facilties physical security

  • Outdoor sports and recreation facilities

  • Roads, access, and service drive design; including curbs, gutters, and sidewalks

  • Traffic control planning

  • Vehicular circulation and parking

  • Accessible parking/routing

  • Loading docks, dumpster pads

Civil engineering consulting services are at the core of what Sam O. Hirota, Inc. offers its clients. From master planning to drainage studies, FEMA permitting to NPDES approvals, force protection to traffic control planning and parking design, SOH engineers have the experience and knowledge to complete projects on time and on budget. 

Contact us for more information.

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