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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 /> ment may contain any level of product. Determine L Remove any sensor that may be installed in the <br /> whether the groundwater depth is above the bottom <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- <br /> ing may occur during the test. space, bringing the fluid level into the riser <br /> (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. S. Start the time-measurement device. <br /> 4.3.6 Steel Tanks. Liquid-filled (hydrostatic) 6. Wait the appropriate time according to the <br /> tests on steel tanks require the same fluid as the manufacturer's test procedure. <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 S. 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 /> inclu 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/Fall 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 /> pei.org <br />