exterior of Halff Fort Smith, Arkansas office location with variety of infrastructure and engineering services

Our Services

closeup of construction workers on SH 334 Bridge

Construction Services

Full-service construction phase services, Construction, Engineering & Inspection (CEI) including observation, review of contractor RFI's and product submittals, preparation of change orders, construction meetings, and contract administration.

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crew members wading in water performing environmental constraints analysis

Environmental Services

National Environmental Policy Act (NEPA) documentation, wetland delineation, Section 404 / 10 permitting and mitigation, cultural resources management, wildlife habitat assessments, threatened / endangered species surveys and relocation, environmental constraints mapping / analysis, oil and gas pipeline permitting, routing studies, due diligence, remediation and regulatory closures, comprehensive asbestos consulting, stormwater compliance, public involvement and more.

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Halff Geospatial service truck with gear

Geospatial Services

Manned and unmanned aerial lidar mapping and photogrammetry, mobile lidar corridor mapping, terrestrial lidar scanning, lidar-based digital terrain modeling, interior and exterior building documentation, floor elevation exhibits, architectural, structural and MEP exhibits, floor deformation and slab analysis, as-built exhibits, 2D floor plans, 3D modeling, historical preservation and digital archiving, and volumetric quantity modeling.

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Land Development Services

Land use and development phasing, master plan implementation, site improvements, construction consultation, schematic design, infrastructure development / drainage, master drainage plans, lift station design, utility design and coordination, sustainable design / low-impact design, platting, entitlement and permitting services, and landscape design.

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Auditorium with lights and chairs at Brownvsille PUB New Annex Building

MEP Engineering Services

Mechanical and air systems design, plumbing system design, Information and Communication Technology (ICT), power system design, engineering studies, cybersecurity, lighting system design, LEED and Renewable Design, and more.

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Planning & Landscape Architecture Services

Active transportation, comprehensive planning, corridor and streetscape, development codes and ordinances, downtown planning, Low Impact Development (LID) / Green Infrastructure, master planned communities, neighborhood and special area planning, parks, recreation and open spaces, planned unit developments, sport facilities and feasibility studies, trails and greenspace planning, urban design and placemaking, Capital Improvement Programming, and more.

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Transportation Services

Intelligent Transportation Systems (ITS), local and regional transportation planning, feasibility and preliminary engineering, visualization, roadway and drainage design, TCP / maintenance of traffic, multimodal and transit planning and design, safety improvements, bicycle, pedestrian and active transportation planning and design, and more.

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Halff surveyor setting up survey and lidar equipment

Surveying Services

Boundary, topographic, and ALTA-NSPS surveys, bathymetric/hydrography surveys, construction staking, quantity calculations, utility mapping / staking, easement and title research, roadway design surveys, energy/renewable site surveys, control surveys, subsurface surveys using GPR technology, FEMA flood studies, elevation certificates, tree surveys, and transportation/rail surveys.

 

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SUE field crew workers outside on Transportation project

SUE/Utility Coordination Services

2D and 3D SUE quality levels A-D, alignment and right of way (ROW) staking, utility adjustment monitoring and verification, utility engineering and relocation design, and more.

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Bull Shoals wastewater treatment clarifier

Water Services

Water / wastewater treatment, instrumentation, control and SCADA, facility design, GIS asset management, pumping facilities and lift stations, elevated and ground storage tanks, hydrologic and hydraulic (H&H) and flood risk modeling, equipment selection, water transmission and distribution, floodplain management, studies and mapping, flood warning systems, stream restoration planning and design, flood hazard mitigation drainage and basin design, water quality, stormwater pollution prevention plans (SWP3s), and more.

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