Attachment_B_Tank_Inventory.pdf

This is a Technical Specifications Report for propane tank sizes prepared by the National Park Service for Mount Rainier National Park, dated March 29, 2025.

The report provides detailed technical specifications for four standard propane tank sizes commonly used for residential, commercial, and industrial applications. The 120-gallon tank has a capacity of 120 gallons (96 gallons usable at 80% fill), measures approximately 4 feet in length by 30 inches in diameter, weighs 200-300 pounds empty and 600-700 pounds full, and is suitable for small residential heating applications. The 250-gallon tank contains 250 gallons total capacity (200 gallons usable), measures approximately 5 feet by 30 inches in diameter, weighs 300-400 pounds empty and 1,000-1,200 pounds full, and serves medium-sized residential homes or small businesses. The 500-gallon tank holds 500 gallons total (400 gallons usable), measures approximately 8 feet by 37-40 inches in diameter, weighs 600-700 pounds empty and 2,000-2,200 pounds full, and is designed for larger residential properties or small commercial operations. The 1,000-gallon tank contains 1,000 gallons total (800 gallons usable), measures approximately 10 feet by 41-48 inches in diameter, weighs 1,200-1,500 pounds empty and 4,500-5,000 pounds full, and is intended for commercial, agricultural, or industrial applications. All tanks are steel construction and must comply with NFPA Standard 58, include pressure relief and venting systems, undergo routine inspections by licensed professionals, and be installed with consideration for environmental protection, spill containment, and emergency response procedures specific to Mount Rainier National Park operations.