Whittemore and Haigh Engineering, Inc.

Comprehensive engineering and design solutions from initial conception through project completion.

• Roadway and Parking Lot Design and Investigation

  Design, analysis, and investigation of roadway and parking lot infrastructures.

• Embankment Stabilization

  Engineering solutions to secure and stabilize earthen embankments.

• Third Party Review of Development Plans and PADEP Permits

  Independent expert reviews of regional development plans and state environmental permit applications.

• PADEP General and Joint Permits

  Navigating and securing General and Joint permits from the Pennsylvania Department of Environmental Protection.

• Project and Construction Management

  Comprehensive project oversight, facility management, and construction administration.

Hydrological and hydraulic modeling, permitting, and mitigation design for water resources.

• Storm Water Analysis and Design

  Comprehensive analysis and engineering of stormwater systems.

• Erosion and Sediment Control

  Design of systems and plans to mitigate erosion and manage sediment runoff.

• NPDES MS4 Municipal Storm Water

  Regulatory support and stormwater management planning for municipal MS4 compliance.

• Hydraulic Modeling

  Advanced modeling utilizing HEC-RAS, HEC2, and Hydraflow software.

• Hydrology Modeling

  Rainfall and runoff simulation using HydroCAD software.

• Detention Basin Permeability and Design

  Sizing, design, and Gulph permeability testing for detention basins.

• Infiltration BMP and Subsurface Storage Design

  Design of infiltration Best Management Practices and subsurface storage basins.

Structural analysis and design for foundation and earth retention structures.

• Box Culvert Design

  Structural engineering and design for precast and cast-in-place box culverts.

• Retaining Wall Design

  Engineering and stability analysis for earth retention structures.

• Foundation Design and Recommendations

  Geotechnical evaluations and structural foundation designs.

Regulatory compliance, permitting, and environmental site investigations.

• Air Quality Permitting and Compliance

  Compliance auditing, emission calculations, and air quality permitting.

• Water and Waste Quality Management

  Spill planning, environmental compliance, and permitting for stormwater, wastewater, drinking water, and solid waste.

• Environmental Assessments and Superfund Support

  ASTM E1527 Phase I ESAs, All Appropriate Inquiries (AAI), and engineering support for USEPA Superfund and PADEP hazardous waste sites.