Eco Alam SinarEnvironmental Consulting
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Our Team

Eco Alam Sinar brings together environmental consultants, project managers and specialist associates across ecology, hydrology, socio-economics, fauna, auditing, social forestry and GIS.
Leadership
Directors
Portrait of Dr Alexander K Sayok
Dr Alexander K Sayok
Director / Managing Director
Ecology, hydrology, peatlands, forestry and environmental assessment
Dr Alexander K Sayok leads Eco Alam Sinar's technical direction, bringing decades of environmental consulting, hydrology, peatland, forestry and sustainability experience.
NREB-registered EIA consultant; MSPO, MTCS, ISO 14001 and ISO 9001 audit training; former UNIMAS research fellow/lecturer.
Portrait of Mr Dawend Jiwan
Mr Dawend Jiwan
Director
Social forestry, agroforestry and community development
Mr Dawend Jiwan brings practical social forestry and community-development experience to conservation and livelihood studies.
Experienced in agroforestry, community livelihood planning, conservation and government-linked development programmes.
Our Partners
Project management and technical depth for multidisciplinary studies
Portrait of Gs Harem Peri
Gs Harem Peri
GIS Specialist
GIS, GPS data collection, drone mapping, satellite-image classification, forestry and oil-palm mapping, hydrologic and sounding-survey mapping, and NCR land mapping
Gs Harem Peri brings more than 20 years of GIS experience across masterplan studies, forestry, oil-palm plantations, land mapping, hydrologic and sounding surveys, and spatial-information deployment. His long-standing work with Sarawak government agencies supports practical project coordination and locally grounded spatial analysis. A Bidayuh from Bau who speaks several local dialects, he also contributes insight into local history, customs, social conditions and community aspirations.
Degree in Forestry Management from Universiti Putra Malaysia; GS Professional Member No. 665 with the Institution of Geospatial and Remote Sensing Malaysia; NREB consultant registration NREB/I/01281.
Selected engagements
  • Sarawak Border Area Development Masterplan - EPU (2025)
  • Tanjung Manis Halal Hub Masterplan Study - EPU
  • Kuching Mangrove Study - FDS
  • Feasibility Study for Second Trunk Road - JKR
  • Community Development in Resettlement Areas 2050 Masterplan - EPU (2022)
  • Navigation Study of Sungai Sarawak from Kuching Waterfront to Siniawan - MOT (2022)
Mr Patrick Sibat Sujang
Project Manager
Agriculture, soils, land conservation and certification support
Mr Patrick Sibat Sujang supports land, agriculture and soil-related assignments where project planning must align with environmental obligations.
NREB-registered EIA consultant with MSPO peer reviewer and auditor training experience.
Mr Lade ak Abo
Socio-economic Consultant
Socio-economic impact assessment and environmental management
Mr Lade ak Abo strengthens the firm's social assessment capability, especially where development interfaces with communities and local livelihoods.
NREB-registered socio-economic impact assessment consultant with environmental management experience.
Portrait of Dr Andrew Alek Tuen
Dr Andrew Alek Tuen
Associate Consultant
Terrestrial fauna and wildlife assessment
Dr Andrew Alek Tuen contributes specialist terrestrial fauna input for environmental assessment and management planning.
Terrestrial fauna specialist with long academic and consultancy experience in EIA, management plans and biodiversity studies.
Dr Jongkar Grinang
Associate Consultant
Aquatic ecology, freshwater biodiversity and fisheries
Dr Jongkar Grinang provides aquatic ecology and freshwater biodiversity expertise for river, catchment and project-area assessments.
PhD in zoology with NREB and DOE subject-consultant experience in aquatic biodiversity.
Mr Acheang Tahieng
Associate Consultant
Environmental auditing
Mr Acheang Tahieng supports audit-focused assignments where independent assessment and corrective action planning are required.
Environmental auditor supporting compliance review and management-system evaluation.
Credibility in practice
Project roles are matched to specialist responsibility
Dr Alexander K SayokEcology, hydrology, peatlands, forestry and environmental assessmentFlood plain survey, Maludam peat and hydrology study, EIA/EMP/EMR projects, peatland and conservation planning.
Mr Patrick Sibat SujangAgriculture, soils, land conservation and certification supportAgricultural, soil, oil palm, certification and land conservation work.
Mr Lade ak AboSocio-economic impact assessment and environmental managementDrainage, road, gold mining monitoring and socio-economic assessment work.
Dr Andrew Alek TuenTerrestrial fauna and wildlife assessmentWildlife and terrestrial fauna components for infrastructure, conservation and industrial studies.
Dr Jongkar GrinangAquatic ecology, freshwater biodiversity and fisheriesFlora and fauna surveys, river carrying-capacity studies, fisheries and aquatic biodiversity work.
Mr Acheang TahiengEnvironmental auditingEnvironmental audit and compliance-related consulting.
Mr Dawend JiwanSocial forestry, agroforestry and community developmentAgroforestry business model and resilient livelihood studies.
Gs Harem PeriGIS, GPS data collection, drone mapping, satellite-image classification, forestry and oil-palm mapping, hydrologic and sounding-survey mapping, and NCR land mappingSarawak border and landscape masterplans, road feasibility, mangrove and Nipah studies, community-development planning, navigation studies and GIS deployment.