DEPARTMENT OF LABOR AND EMPLOYMENT 

Division of Oil and Public Safety 

633 17th Street, Suite 500 

Denver, Colorado 80202-3660 

(303) 318-8533/8505; Fax (303) 318-8488 

Website: http://oil.cdle.state.co.us – http://ops.cdle.state.co.us

Q:\Web\Oil Inspection\Forms\Alternative Fuels Compatibility Form 04-2008.doc - 

ALTERNATIVE / RENEWABLE FUELS COMPATIBILITY FORM

Storage Tank System Checklist for Equipment Compatibility 

for E-blend Fuels (greater than 10% ethanol by volume) or Bio Diesel Products 

OPS storage tank regulations 7 C.C.R. 1101-14 §2-3-3 and §3-4-4 address compatibility requirements for UST and AST systems. OPS regulations state that 

owners/operators must use an UST system or an AST system made of or lined with materials that are compatible with the substance stored in the UST or AST. 

Product piping, including piping within the dispensers, as well as containment sumps are considered part of the UST or AST system, and needs to be compatible 

with the substance stored and dispensed through it. All UST or AST systems that store and dispense Alternative / Renewable fuel must be fully compatible. 

Facility Name: Fax #: Owner Name: Fax #: 

Address: Address: 

City: State CO Zip: City: State: Zip: 

Contact: Phone #: Contact: Phone #: 

Alternative / Renewable E-85- 85% Ethanol E-100- 100% Ethanol Other 

Alternative / Renewable B10 – 10 % Bio Diesel B20- 20% Bio- Diesel B100 – 100% Bio Diesel Other 

The UST system components below must be compatible with the Alternative / Renewable fuel stored and dispensed. Review this checklist 

thoroughly for its requirements before converting to Alternative / Renewable fuel. Enter Model/Brand, Manufacturer and check either Yes or No 

in one or both columns under UL Listed or Manufacturer Approved. 

Table 1: Tanks and Product Piping – UL Listed/Manufacturer Approved For Conversion Product Stored 

Component Model/Brand Manufacturer UL Listed Manufacturer Approved 

Tank* (capacity) Y N Y N 

Auto Shutoff Y N Y N 

Sub Pump, O-rings, Gaskets Y N Y N 

Tank Sump Y N Y N 

ATG Probe, float/sensor Y N Y N 

Ball Float Y N Y N 

Sump Sensor Y N Y N 

Pipe Y N Y N 

Thread Sealant Y N Y N 

Adhesive Y N Y N 

Flex Connectors Y N Y N 

LLD Y N Y N 

*Internally lined tanks are not suitable for conversion to storage of Alternative / Renewable fuels, unless a compatibility determination analysis has been conducted.

Deadline for determining compatibility is December 31, 2008. Third party precision tank and line testing will be required annually on “Internally Lined” tanks only.

Table 2: Dispensers and Dispenser Sump– UL Listed/Manufacturer Approved For Conversion Product Stored 

Component Model/Brand Manufacturer UL Listed Manufacturer Approved 

Dispenser Y N Y N 

Pipe sealant Y N Y N 

Seals/Gaskets Y N Y N 

Suction Pump Y N Y N 

Hoses Y N Y N 

Nozzle/Swivel Y N Y N 

Break-away Y N Y N 

Filter Y N Y N 

Meter Y N Y N 

Dispenser/Sump Y N Y N 

Pipe Y N Y N 

Pipe Sealant Y N Y N 

Flex Connector Y N Y N 

Sump Y N Y N 

Emergency Valve Y N Y N 

Sensor Y N Y N 

Check valve Y N Y N 

Before Alternative / Renewable Fuel is Transferred to the Tank

Once equipment compatibility has been established, the items below must be completed before Alternative / Renewable fuel can be transferred to the tank. 

Check for water in the tank. No level of water is acceptable for Alternative / Renewable fuels due to the phase separation problems. Y N 

All visible fittings and connections at the top of the tank are tight (no vapors escape and no water enters). Y N 

Sump and spill containment covers prevent water from entering. Y N 

Water infiltration problems fixed if necessary. Y N 

The tank has been cleaned of all water and sediment. Y N 

Clean tank certificate obtained or comparable documentation (e.g., see API Publication 2015, Cleaning Petroleum Storage Tanks and 

NFPA 326, Standard for the Safeguarding of Tanks and Containers for Entry, Cleaning, or Repair, 2005 Edition). Y N 

Labeling: identify the fill port and paint access covers according to API RP 1637. Make sure transport driver cannot make the mistake 

of delivering Alternative / Renewable fuel to the wrong tank. Label dispenser. Y N 

INSTALLER INFORMATION 

Installer Name (Company): Contact: 

Installer Address: Phone: 

Installer City, State, Zip: Fax: