Projects & Sectors

AHEC has delivered over 500 environmental consulting projects for leading organizations in energy, industry, infrastructure and mega-developments across Saudi Arabia, Tunisia and the wider region.

500+

Projects Successfully Delivered

50+

Major Clients Served

100%

Regulatory Approval Success Rate

15+

Years of Industry Experience

Industries We Serve

Sector Expertise That Delivers Compliance

Each sector has its own regulations, risks and stakeholders. Our teams know them well.

Energy, Oil & Gas

Powering the Region’s Energy Future Responsibly

We support major energy operators in Saudi Arabia and Tunisia in achieving environmental compliance while managing the complex operational demands of upstream and downstream facilities.

Key Services

EIA studiesNCEC permittingANPE permitting (Tunisia)Environmental monitoring

Notable Projects

Saudi Aramco - Multiple ESIA and EIA projects across facilities
Al-Khafji Joint Operations (KJO) - Environmental permitting and assessments
Saudi Electricity Company (SEC) - Transmission line EIA studies
L&T (Larsen & Toubro) - Offshore platform environmental studies
SITEP – EIA framework contract, El Borma oilfield (Tunisia)
STEG – E&S scoping study, 130 km transmission line (Tunisia)

Petrochemical & Industrial

Building Environmental Responsibility

From heavy industry to specialized construction, we provide the compliance framework necessary for safe, efficient, and environmentally responsible project execution.

Key Services

Environmental monitoringEMP developmentEnvironmental auditing

Notable Projects

SABIC - Multiple petrochemical facility assessments (Petrokemya, Sharq)
Air Products - Industrial gas hub environmental studies
TASNEE - Ethylene cracker plant compliance
Tronox Saudi Arabia - Environmental auditing and permitting
UNOPS – supervision of mercury waste disposal (Tunisia)
Dattes d’Or – decontamination study, Kebili (Tunisia)

Water & Desalination

Securing Resource Sustainability for Critical Infrastructure

We safeguard the sustainability of desalination facilities and water treatment systems, supporting water security and operational efficiency across the region.

Key Services

Environmental impact assessmentsNCEC permittingMarine surveys

Notable Projects

Saline Water Conversion Corporation (SWCC) - 15+ desalination plant assessments
MARAFIQ - Yanbu II desalination plant environmental studies
Riyadh Water Production Company - RO desalination EIA
GCT & TIFERT – EIA of a wastewater treatment plant, Skhira (Tunisia)

Renewable Energy & Power Generation

Accelerating the Clean Energy Transition

We provide critical environmental evaluations that enable the region’s renewable energy ambitions, from wind farms to solar installations and grid infrastructure.

Key Services

Ecology surveysEIA studiesNCEC permitting

Notable Projects

NEOM Aqaba Wind Farm
NEOM Shigry PV Plant
Ministry of Energy - Renewable energy projects (solar and wind farms)
ACWA Power - Solar power plant environmental audits
Worley - Multiple renewable energy projects
TYPSA - Solar and wind farm environmental assessments

Infrastructure & Mega-Projects

Environmental Leadership for Visionary Developments

From Saudi Arabia’s mega-projects to ports and coastal developments in Tunisia, we deliver integrated, science-based solutions that meet the highest international standards.

Key Services

Comprehensive ESIA studiesHydrodynamic modellingEnvironmental monitoring

Notable Projects

NEOM - Multiple ESIA studies for construction villages and renewable energy
Qiddiya - Comprehensive environmental assessments for entertainment city
Royal Commission for Jubail and Yanbu (RCJY) - Multiple industrial projects
Diriyah Gate Development Authority (DGDA) - Heritage site environmental studies
OMMP – hydrodynamic study, Menzel Bourguiba port (Tunisia)
APIP – EIA for maintenance dredging, Bekalta fishing port (Tunisia)

Transportation (Railways)

Sustainable Mobility Infrastructure

We ensure transportation network expansion proceeds with full environmental responsibility, minimizing ecosystem disruption and resource impact.

Key Services

EIA studiesNCEC permittingEnvironmental auditing

Notable Projects

Saudi Railways (SAR) - Eastern and Northern train network EIA
Royal Commission of Riyadh City - Sports boulevards environmental studies
King Khalid International Airport - Desalination plant EIA
Alfanar Company - Qiddiya utilities and infrastructure
AFT – EIA of a tourist subdivision, Chaffar (Tunisia)

Tunisia

Recent Projects in Tunisia

Environmental studies delivered by our Tunis office for industrial, energy and public clients.

GCTTunisian Chemical Group

EIA of a macrophyte wastewater treatment plant for the GCT and TIFERT plants

Skhira, Sfax 2026

Baseline, air dispersion modelling, impact matrix, ESMP and stakeholder consultation, in ANPE format.

SITEPItalian-Tunisian Oil Exploitation Company

EIA framework contract for oil exploitation projects

El Borma 2026

Drilling, side-track, produced-water injection and soil remediation EIAs, through to ANPE approval.

UNOPSUnited Nations Office for Project Services

Supervision of the environmentally sound disposal of mercury-containing wastes

Kasserine 2025–2026

Remediation plan review, Basel Convention permits, containment, transport and disposal verification.

STEGTunisian Company of Electricity and Gas

Environmental and social scoping study for a 130 km transmission line

Tunisia 2026

Habitat mapping, flora and fauna inventories and critical habitat assessment to World Bank ESS6 and IFC PS6.

OMMPOffice of the Merchant Marine and Ports

Hydrodynamic study of the approaches to Menzel Bourguiba port

Menzel Bourguiba, Bizerte 2026

2D hydrodynamic model with tide and wind scenarios to design the sediment deposit area.

APIPPorts and Fishing Facilities Agency

EIA for the maintenance dredging of Bekalta fishing port

Bekalta, Monastir 2025

Bathymetric survey, sediment sampling and analysis, disposal site selection and ESMP.

AFTTourism Land Agency

EIA of the UA1 tourist subdivision, Chaffar tourist zone

Chaffar, Sfax 2026

Alternatives analysis, coastal erosion and sea-level rise, stormwater review and ESMP.

Dattes d’OrDate-processing company

Technical decontamination study of a date-processing plant

Kebili 2025

Eco-balance, pollution diagnosis, regulatory compliance check and costed action plan.

Project Statistics by Category

Environmental Studies by NCEC Category

10+

Category 1 Projects

Environmental Management Plans for minor modifications

30+

Category 2 Projects

Environmental assessments for medium-impact developments

450+

Category 3 Projects

Comprehensive ESIA for major industrial and infrastructure projects

Our Technical Expertise

Specialized Services Demonstrated

Marine Environmental Studies

DROP camera benthic surveys
Niskin bottle seawater sampling
Van Veen grab sediment sampling
ADCP current and tide measurements
Marine flora and fauna identification and classification
Coral reef assessments
Brine discharge impact studies

Environmental Impact Assessment

Category 1, 2, and 3 EIA studies per NCEC regulations
ESIA per IFC Performance Standards
Strategic Environmental Assessment (SEA)
Cumulative impact assessments

Environmental Modelling

Air dispersion modelling (AERMOD, CALPUFF)
Noise propagation modelling (SoundPLAN)
Hydrodynamic modelling (DELFT3D, MIKE 21)
Oil spill trajectory modelling
Hydrology studies (HEC-RAS, ArcGIS)

Environmental Monitoring

24-hour ambient air quality monitoring
Continuous noise monitoring
Soil and groundwater sampling
Industrial emissions testing
Indoor air quality assessments

Terrestrial Ecology

Flora and fauna surveys
Avian migration studies (wind farm assessments)
Habitat characterization
Protected species assessments
Biodiversity checklists

Regulatory Compliance

NCEC permitting (all categories)
Royal Commission permitting (RCJY)
Permit Application Package (PAP) development
Best Available Technology (BAT) assessments
Environmental Emergency Response Plans (EERP)
Environmental Auditing

Projects by Client Type

Experience Across Every Sector

Oil & Gas Sector150+

Petrochemical & Industrial100+

Infrastructure & Utilities80+

Renewable Energy50+

Manufacturing & Others50+

Mega-Developments40+

Water & Desalination30+

Geographic Coverage

Projects Delivered Across Saudi Arabia and Tunisia

250+

Eastern Province

Dammam, Jubail, Khobar, Ras Al Khair, Al-Khafji

120+

Central Region

Riyadh, Qiddiya, Diriyah, Sakaka, Al-Hadhen

80+

Western Province

Yanbu, Rabigh, NEOM, Tabuk

30+

Southern Region

Jazan, Najran, Bisha

20+

Northern Region

Al-Qurayyat, Northern Border Region

Tunisia

Sfax, Bizerte, Monastir, Kasserine, Kebili, El Borma

Partner With a Proven Environmental Consulting Leader

Our portfolio covers some of the most complex projects in Saudi Arabia and Tunisia, for clients such as Saudi Aramco, SABIC, NEOM, the Tunisian Chemical Group, SITEP and UNOPS.

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