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Underground Storage Tank <br /> Secondary Containment Testing Report Form <br /> 9. COMMENTS <br /> Mod Wld-Dwst=Modern Welding Double Wall Steel Tank. Fuel Oil-S=Fuel Oil Supply. <br /> Fuel Oil-R=Fuel Oil Return. Ameron FRP=Ameron Fiberglass Reinforced Plastic. <br /> Mod Wld=Modern Welding. <br /> Note: Tank has a Tank Secondary Containment Vent to atmosphere. Tank Secondary <br /> Containment vacuum applied from Tank Secondary Containment Atmosphric Vent Riser with Tank <br /> Secondary Sensor Riser plugged. This method is necessary due to the configuration of the Tank <br /> Secondary Containment Sensor Riser and Sensor Electrical Conduit manifold. <br /> Note: Secondary Pipe Run #1 Supply and Secondary Pipe Run #2 Return are manifolded together <br /> at the Piping Sump. Applied pressure represnets Secondary Pipe for Supply and Secondary Pipe <br /> for Return, during test period. <br /> All tests marked "Fail'and any repairs made before or during the tightness test must be described in <br /> the COMMENTS section. <br /> Page 5 of 5 <br />