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09 PEI/RP1200-12 ATGs are programmed to monitor the product level in storage tanks and can be programmed to perform com- pliance tests that can include 0.2 gph static and dynamic ("continuous") leak tests, and 0.1 gph ("precision") tests. 8.2.1 ATG Functionality Test. 8.2.1.1 General. The ATG must be pro- grammed using site -speck parameters for the UST system to ensure proper opera- tion. On dual float systems, the second float indicates the level of water in the tank. 8.2.1.2 Purpose. The purpose of this test is to: • determine whether the ATG shows the correct product level on the console; • determine whether the ATG shows the correct water level on the console; • verify that the water alarm is operating correctly and provides a warning at the programmed set point. WARNING: Water ingress into tanks con- taining ethanol -blended gasoline may not be detected using water floats designed for non -ethanol -blended gasoline. 8.2.1.3 Description of Test. The pro- cedures in this test are for a probe, properly installed per manufacturer's instructions, equipped with floats having a range inside the tank that extends from the bottom to the top of the tank. The ATG probe is removed from the tank. The product float and water float positions are compared with the console readout. 8.2.1.4 Preparation. Use this test pro- cedure in conjunction with the monitor- ing system manufacturer's installation and maintenance instructions. Refer to the tank manufacturer's tank chart for the capacity in gallons, the diam- eter and the volume of product that corre- sponds to the product level. Verify that the console has no active or recurring history of leak detection -related 0 pei.org warnings or alarms. In the event of any such warnings or alarms, notify the appro- priate person before continuing the test. Where possible print out the system setup and any alarm histories from the console. Save the printout for facility records or make an electronic copy. 8.2.1.5 Test Equipment. Test equip- ment shall include: • tools for the removal of the ATG probe and sensors; • tape measure or gauge stick; • water -finding paste. 8.2.1.6 Test Procedure. 1. Measure the product and water level in the tank and compare to the console readings to conium ATG accuracy. If the readings do not agree, contact the appropriate person. 2. Remove the ATG probe cap and discon- nect the cable from the ATG. 3. Remove the ATG probe from the tank. Use care to ensure that the floats on the stem do not catch on the bottom of the riser during removal. 4. Inspect the probe. The floats must move freely on the stem without binding. If any parts are damaged or missing, con- tact the appropriate person. 5. Reconnect the probe cable. 6. Set the fuel float in the middle of the probe and verify that it is showing the correct inch reading on the console. 7. Slowly move the fuel float up the probe until the high product alarm is triggered on the console. If the system does not alarm at the pre-set level, contact the appropriate person. 8. Measure the distance from the bot- tom of the probe to the fuel float when the float first triggers the high product alarm. 9. Clear the alarm conditions.