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Environmental & Health Impact Assessment (EHIA)

ONEP + Constitution §58 + MoNRE 11 severe-impact project categories · best for Petrochemical · Smelter · Nuclear

From 1,485,000-4,985,000 บาท365-730 working days
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NYC Legal's Environmental & ESG Bar handles Environmental & Health Impact Assessment (EHIA) across EIA, EHIA, ESG, CSRD, TCFD, CBAM and EPR.

Credentials: ONEP License ENV-1245, ISO 14001 Lead Auditor (IRCA), GRI Certified, SASB FSA, TCFD Knowledge Hub, CDP Gold-rated consultants.

Environmental & Health Impact Assessment (EHIA) takes 365-730 working days at 1,485,000-4,985,000 บาท — includes scoping, field survey, modeling, report, public hearing and agency liaison.

We liaise with ONEP, Pollution Control, TGO, SET, EFRAG, Verra, Gold Standard, ICVCM and EU CSRD assurance bodies.

Coverage: NEQA 1992, EIA 35 categories, EHIA 11 severe, GRI, SASB, TCFD, IFRS S1/S2, EU CSRD, CBAM and EPR.

Carbon Credits — 1.85M tCO₂e originated (T-VER + Verra VCS) with zero rejections at validation.

Coverage

🇹🇭 for Thailand (ONEP + NEQA 1992)
EIA 35 categories + EHIA 11 severe + EMP + EHIA Sub-committee + Expert Committee
🇪🇺 for European Union (CSRD + ESRS 2024)
ESRS E1-E5 + S1-S4 + G1 + double materiality + XBRL + assurance
🇺🇸 for USA (SEC Climate Rule + EPA TRI)
10-K climate + Scope 1/2 (Scope 3 if material) + TRI Form R + CARB SB 253/261
🇬🇧 for United Kingdom (Modern Slavery Act + mandatory TCFD)
TCFD mandatory (since 2022) + UK SDR labelling + Modern Slavery Statement (≥£36M)
🇩🇪 for Germany (LkSG Supply Chain Act 2023)
Risk analysis + preventive measures + remedial + grievance + annual report
🇯🇵 for Japan (mandatory TCFD + GX League)
TCFD mandatory for Prime Market + GX League ETS + Saitama Prefecture ETS
🇸🇬 for Singapore (MAS Climate Risk + SGX ESG)
MAS ERM Banking/Insurance/Asset + SGX ESG comply-or-explain + TCFD 2025
🇦🇺 for Australia (ASIC Climate + Mandatory ISSB)
AASB S2 mandatory Group 1 from 2025 + Modern Slavery Statement + safeguard mechanism
🇨🇳 for China (MEE EIA + national ETS 2021)
EIA classification A/B/C + national ETS power sector + Stock Connect ESG
🇰🇷 for South Korea (K-ETS 2015 + K-Taxonomy)
K-ETS Phase 4 (2026-2030) + K-Taxonomy green/transition + KSSB mandatory 2026
🌐 for International (ISO 14001 + ISO 14064 + IFRS S1/S2)
EMS + GHG inventory/verification + ISSB sustainability + ISAE 3000/3410 assurance
🌏 for ASEAN (Transboundary Haze Agreement 2002)
Hotspot monitoring + concession map + extraterritorial liability (SG THPA)

How it works

  1. 1

    Scoping (7-14 days)

    Project screening + applicability + ToR + stakeholder mapping.

  2. 2

    Baseline + survey

    Field survey + air/water/soil/biodiversity baseline + emission factor inventory.

  3. 3

    Impact assessment + modeling

    AERMOD + CALPUFF + biodiversity + health risk + mitigation hierarchy.

  4. 4

    Public hearing + consultation

    Pre-scoping + two public hearings + 60-90-day comment period.

  5. 5

    Filing + approval

    ONEP/CHIA/ESG report submission + Expert Committee review + decision.

Frequently asked questions

Who needs Environmental & Health Impact Assessment (EHIA)?

Petrochemical, Smelter, Nuclear, Dam ≥100M m³, Airport runway and any project requiring environmental permits or disclosure.

Total cost?

1,485,000-4,985,000 บาท — includes consultancy, survey, modeling, public hearing, agency fee and assurance.

Timeline?

365-730 working days — EIA 180-540, EHIA 365-730, ESG 90-180, CSRD 120-270.

EIA vs EHIA?

EIA = 35 standard categories. EHIA = 11 severe categories (petrochemical, dams, smelting) + health impact + Constitution §58.

Does CSRD apply to Thai companies?

Yes if you have an EU subsidiary or EU revenue ≥€150M (first wave 2024) — uses ESRS + double materiality + XBRL.

EU CBAM obligations?

Quarterly embedded-GHG reports since Q4/2023; from 2026 buy CBAM certificates priced to EU ETS.

T-VER vs VCS carbon credits?

T-VER trades at 30-100 THB/tCO₂e domestically. VCS + Gold Standard 350-1,500 THB on global markets.

When does PRTR start?

Thai PRTR Bill 2023 awaits enactment — chemical/refinery/smelter plants should start inventories now; EU + US already require it.

Related services

Environmental Impact Assessment (EIA) Report ESG / Sustainability Report (GRI · SASB · TCFD) EU CSRD (Corporate Sustainability Reporting Directive) TCFD / IFRS S2 Climate-related Disclosure Carbon Credits (T-VER · Verra VCS · Gold Standard) PRTR (Pollutant Release & Transfer Register) FDI / BOI