API RP 1604 : 1996

Section 1 - General
1.1 Introduction
1.2 Scope and purpose
1.3 Special precautions
1.3.1 Toxicity considerations for petroleum substances
1.3.2 Flammability and combustibility considerations
1.4 Referenced publications
Section 2 - Temporarily out of service
2.1 Applicability
2.2 Securing tank systems
Section 3 - Permanent closure and change of service
3.1 Applicability
3.2 Notification
3.3 Pre-closure evaluation
3.4 Closure assessment
3.5 Corrective action
3.6 Recordkeeping
Section 4 - Permanent closure and change of service
4.1 Applicability
4.2 Preparation
4.3 Purging and inerting
4.4 Testing
4.5 Closure in place
4.6 Removal
4.7 Change in service
Section 5 - Storage of used tanks
5.1 Storage considerations
5.2 Storage procedures
Section 6 - Sale for reuse
6.1 Considerations for reuse
6.2 Conditions of sale
Section 7 - Disposal
7.1 Disposal criteria
7.2 Disposal procedures
Figures
1 Educator-type air mover
2 Diffused air blower

Gives operating procedures that may be used for the abandonment, removal, storage, temporarily-out-service, and safe of used underground tanks that have contained gasoline or other flammable liquids.