Underground fuel tank abandonment in Kenya follows strict regulatory protocols under EPRA and NEMA to mitigate environmental risks like soil and groundwater contamination from leaks.
Key Regulations
EPRA’s Decommissioning, Site Abandonment and Restoration Guidelines 2025 mandate approved plans for petroleum facilities, including underground storage tanks (USTs). Operators submit decommissioning plans detailing timelines, methods, and funds; NEMA requires Environmental Impact Assessments for site restoration. Petroleum Act 2019 (Sections 39-44) enforces contractor liability, prohibiting abandonment without permits.
Abandonment vs Removal
Abandonment (in-place neutralization) applies when excavation risks outweigh benefits, such as under buildings or high water tables; full removal is preferred for accessible sites. EPRA prioritizes removal to eliminate future liabilities, but abandonment uses inert fills if approved.
Step-by-Step Process
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Planning and Permits: Notify EPRA/NEMA 90 days prior; submit plan with risk assessment, soil tests, and cost estimates.
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Isolation and Emptying: Shut off utilities, pump fuel/sludge via vacuum trucks to licensed facilities.
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Cleaning and Degassing: High-pressure wash, apply degreasers, ventilate vapors; test for <1% LEL explosivity.
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Neutralization: Fill with concrete (large tanks), perlite, or sand-cement slurry within 48 hours to prevent collapse/ignition.
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Backfilling and Restoration: Excavate around tank if partial access, layer gravel/sand, compact, cap with concrete; restore vegetation.
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Verification: Soil/water sampling confirms no contaminants; issue certificates.
Pro-Logic Technologies (0723 763 173) executes compliant abandonment, integrating with tank decommissioning services.[ from prior]
Risks and Costs
Improper abandonment risks fines up to KSh 5M or site closure; groundwater pollution endangers Nairobi aquifers. Costs: KSh 150,000-500,000 for 10,000L USTs, covering permits and remediation.