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Buckeye Partners,L.P..API 653 Tank Inspection Interval Guideline Buckeye Partners Tank Integrity Program operates based on the API 653 Standard,with interpretation guidelines detailed below. At the time of this writing,the latest standard is 4`"Edition API 653,2"d Addendum,2012. • For non-DOT regulated tanks,certain state regulations are more stringent than API 653,and guidance is provided for those cases. • Buckeye allows a 20-year maximum internal inspection interval(even if longer intervals are allowed per regulation). • There is a separate guideline for non-DOT regulated,smaller tanks(which refers to the STI standard). INITIAL INTERNAL INSPECTION INTERVAL(excluding DOT regulated tanks): As per the 4"Edition of API 653,Addendum 2, Paragraph 6.4.2.1.1: • A new tank floor(new construction,new 2ntl bottom or complete floor replacement)with a Release Prevention Barrier— b 20-year inspection interval • A new tank floor(new construction,new 2"d bottom or complete floor replacement), new annular ring withouta Release Prevention Barrier- 10-year inspection interval plus applicable'Safeguard'extension intervals(+Syears forproduct-side fiberglass-reinforced lining,+2 years for a product side thin-film lining,+5 years for soil-side CP). Forfull definitions,see API 653 Table 6.1—Tank Safeguard. Note: • A Release Prevention Barrier exists if under-bottom leak containment and detection is present;see API 650, Annex I,for the full definition. Tanks that have 2"tl bottoms(double bottoms)typically have a Release Prevention Barrier installed. INITIAL INTERNAL INSPECTION INTERVAL(DOT regulated tanksl: As per the DOT recognized 31d Edition of API 653,Addendum 3, Paragraph 6.4.2.2 • A new tank floor(new construction, new 2"d bottom or complete floor replacement)or a new annular ring- b 10-year initial inspection interval,regardless of tank safeguards. SUBSEQUENT INTERNAL RE-INSPECTION INTERVAL: Follow the 4" Edition of API 653,Addendum 2,Paragraph 6.4.2.2,while also considering the more stringent state rules below. This method relies on usingthe measured tank bottom corrosion rate and the minimum remaining thickness calculations. Buckeye allows a maximum interval of 20 years. Notes: • For DOT regulated tanks that meet all of the following criteria,only an every5-year external inspection will be performed (no internal inspections are ever required): o Less than 50,000 gallons capacity,and, o No API nameplate,and, o Tank has a flat bottom resting on a concrete pad or Tank is elevated so bottom can be inspected, and, o No internal access from a ground level man-way. Buckeye API Inspection interval guideline Rev 12-18-2012.docx December 18,2012