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1 <br /> 1/6100 Pull permit for replacement of monitoring device with San Joaquin County. <br /> 1124/00 Premium tank shut down with L-2 (plus) and L-3 (premium) alarms on TLS-350. <br /> ' Fifty gallons of water removed from plus and premium turbine sumps and placed in <br /> drum. Cleared alarms and returned to service. <br /> ' 212/00 TLS-350 system inspected by San Joaquin County and demonstrated to be <br /> working properly. <br /> ' 2/25100 Replace all lights on TLS-350 monitor. Tested and placed in service. <br /> 4/14/00 High and low variance in tank monitor readings. Unleaded probe cleaned and re- <br /> installed. <br /> 1 <br /> Review of these records indicates that the UST system on site was monitored by a Leak Alert <br /> ' system from at least December 1992 to July 1996. A Veeder-Root TLS-350 system was installed <br /> in July 1996 and has remained in service since that time. All documented tank shut downs and <br /> ' alarms have been as a result of water in the turbine sumps or defective sensors. Water was <br /> typically found to have entered the sumps during rainy winter months. Water removed from the <br /> ' sumps was placed into 55-gallon drums for offsite disposal. Representatives of San Joaquin <br /> County were only reported on site in January 2000 to observe monitoring system testing. Small <br /> releases from hosing within the dispensers appear to have been cleaned up with absorbent pads. <br /> Hoses and nozzles on dispensers were replaced to meet APCD standards in 1992 and 1993, <br /> respectively. <br /> 1 <br /> 4.2 UST System Inspection <br /> The purpose of the UST system inspection was to perform the following tasks: <br /> t • Check all monitoring equipment, including all sensors, and line leak detectors; <br /> • Check spill containment boxes for the presence or indication of spills; <br /> ' • Check dispenser pans; <br /> • Check turbine sumps for the presence of product, corrosion, or indications of product <br /> ' releases; and <br /> • Check overfills prevention devices for functionality. <br /> Mr. David Oliver of ATC and Mr. Dennis Tweetie of Elite IV visited the site on May 23, 2000 to <br /> perform a UST system inspection. Ms. Carol Oz and Mr. Michael Kith of San Joaquin County <br /> ' were also on site to observe the inspection. Results of the inspection indicated that all audio and <br /> visual warnings on the TLS-350 system worked properly. The three UST annular space sensors <br /> 1..Vn pMgt=\QMKSP NS 172(0003)UUP0R'FS==AddDfiW=.dm 7 ATC Associates Inc. <br /> t <br />