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<br />Exclusive Providers for MDleak® and PHDleak™ Technologies <br />2765 East Wieding Rd  Tucson, AZ 85718  Phone 520.207.4878  FAX: 520.990.8965  www.LeakDetect.net <br /> <br />Author David Rabb 5 of 8 <br />Version 211202 <br /> <br />ELD Final Tank Testing: <br />Wet/Brine Filled Interstitial Tanks (MCleak® test method): <br />1. Important; <br />a. LDT requires all ballast to be removed from the tanks primary 72 hours prior to LDT <br />arrival onsite. <br />2. CSI/NOV tanks interstice are required to have an elevated brine level in order to gain a 0.005gph <br />test <br />a. The brine level within the interstice is required to be elevated 72 hours before LDT’s <br />arrival. <br />b. Add brine to raise the level within the interstitial riser pipe 4-inches above the bottom of the <br />riser or 4-inches above the top of the tank interstitial reservoir. <br />i. Failure to increase the level 72-hours or greater before LDT arrival may indicate an <br />inconclusive test, delaying the opening of the facility. <br />Dry Interstitial Tanks: <br />3. DRY interstice tank tests (MDleak® test method) <br />a. LDT requires all ballast to be removed from dry interstice tanks prior to LDT arrival <br />onsite. <br /> <br />Systems: <br />1. LDT has no restrictions to the MDleak® testing Methods. <br />2. LDT has several chemical markers, so site contamination by a single chemical marker is not a <br />consideration or limitation. <br />3. It is best for the contactor to find most of the leaks using soap & water. Small leaks contained in <br />double wall pipe are best left to LDT crews to pinpoint than for the contractor to spend hours <br />looking for these small leaks. <br />4. Fast identification and leak location substantially reduce repair cost. <br /> <br />General: <br />1. Extraction plugs should be installed and sealed properly. <br />2. A construction crew shall be onsite during the test period. This crew should be equipped to repair <br />any portion of the system. <br />3. The MDleak® method can test piping containing liquids. However, if a liquid is present additional <br />time and cost will be incurred. <br />