Professional EPA-compliant tools for fuel storage containment. Built for engineers who demand precision.
Full compliance with EPA 40 CFR 112 SPCC regulations. Multiple modes including 110% largest tank and conservative 125% calculations.
Advanced calculations accounting for tank displacement, wall thickness, and iterative refinement for accuracy within 0.001 cubic feet.
Automatically generated scaled diagrams showing bund walls, tanks, plinths, and critical dimensions for clear visualization.
Seamless switching between imperial (ft, gallons) and metric (m, liters) with accurate conversions and unit-specific validation.
Configure up to 10 tanks with mixed sizes and shapes. Intelligent grid layout optimization for efficient space utilization.
Print-ready documentation with all calculations, diagrams, compliance notes, and regulatory citations for permit applications.
Professional-grade secondary containment calculations trusted by engineers across the Caribbean and beyond.
Free forever. No registration required. Built by engineers, for engineers.
Launch CalculatorA bund wall is a secondary containment structure designed to prevent environmental contamination from fuel storage tank spills or leaks. Required by EPA regulations for facilities storing petroleum products, bund walls must contain at least 110% of the largest tank's volume.
Learn more about regulations →The Spill Prevention, Control, and Countermeasure (SPCC) rule requires facilities with oil storage capacity above 1,320 gallons to have secondary containment. Our calculator ensures compliance with 40 CFR 112.8(c)(2) requirements.
View EPA regulations →Effective bund wall design accounts for tank displacement, wall thickness, working clearances, and freeboard for rainfall. Industry practice limits bund height to 1.5 meters for safety access. Consider drainage, leak detection, and maintenance access in your design.
Start designing →Caribbean nations including Jamaica often adopt EPA standards or equivalent regulations. Our tools are specifically designed for Caribbean engineers, supporting both imperial and metric units. Always verify with local authorities like Jamaica's NEPA for specific requirements.
Visit Jamaica NEPA →Net containment volume equals gross bund volume minus tank displacement. Our calculator uses iterative refinement to account for height-dependent effects, achieving accuracy within 0.001 cubic feet. Tank footprint and plinth volumes are properly accounted for.
View calculation method →Beyond EPA requirements, NFPA 30 provides guidance on flammable liquid storage including minimum tank spacing (3 feet), fire protection, and ventilation. UK HSE and API standards also provide valuable guidance for international projects.
NFPA 30 standards →