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Recommended Practices for the Testing and Verification of Spill, Overfill, Leak Detection and Secondary Containment Equipment at UST Facilities <br /> 4. 3 .4 Test Conditions . The primary contain- 4.3 . 9 Test Procedure . <br /> went may contain any level of product . Determine 1. Remove any sensor that may be installed in the <br /> whether the groundwater depth is above the bottom tank interstitial space . <br /> of the tank. Consult specific manufacturer ' s proce- <br /> dures in regards to groundwater and performing the 2 . Determine and record the groundwater level . <br /> test. No bulk deliveries shall occur within 8 hours 3 . Add test liquid to the tank interstitial <br /> prior to conducting or during the test. No dispens- space, bringing the fluid level into the riser <br /> ing may occur during the test. (standpipe) to the appropriate level based on <br /> 4 . 3 . 5 Preparation . Determine the volume of the manufacturer ' s written procedure . <br /> the tank and identify the test being performed . 4. Document the starting level and start time of <br /> Tank volume information is available from facility the test . <br /> records or the ATG readout. Prepare a monitoring <br /> fluid solution to add to the interstitial space . 5. Start the time-measurement device. <br /> 6 . Wait the appropriate time according to the <br /> 4. 3 . 6 Steel Tanks . Liquid-filled (hydrostatic) manufacturer ' s test procedure. <br /> tests on steel tanks require the same fluid as the <br /> monitoring fluid . Contact the manufacturer for 7 . Document the ending level and ending time of <br /> instructions . the test. <br /> 4. 3 . 7 Fiberglass Tanks . Determine tank size 8 . Determine and record the groundwater level . <br /> and diameter and apply the appropriate method . 9 . Remove liquid added to the tank interstitial <br /> space, and restore the liquid level in the tank <br /> include : <br /> Test Equipment. Test equipment shall interstitial to normal operating condition . <br /> nclude : <br /> 10 . Reinstall the sensor so that it is installed within <br /> • monitoring fluid; manufacturer ' s specifications . <br /> • stopwatch or other time-measurement device <br /> capable of measuring a 1 -second increment; 4.3 .10 Pass/Fail Criteria . Compare the data to <br /> the manufacturer ' s pass/fail criteria in Appendix A <br /> • tape measure . to determine if the tank has passed the test. <br /> peLorg <br />