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State Water ResotHees Contre' -'oard Page 2 of 3 <br /> Test Period Minimum of 2 hours. <br /> Test data are acquired and recorded by system's computer. <br /> Leak rate is calculated from the difference between the first and last data collected. <br /> There must be no dispensing or delivery during test. E <br /> q <br /> Temperature Average for product is determined by probe which contains 5 thermistors. <br /> At least two thermistors must be submerged in product during test. <br /> ti <br /> Water Must be used to detect water ingress. <br /> Sensor Minimum detectable water level in the tank is 0.66 inch for model 8463 and 8493 probe. <br /> Minimum detectable water level in the tank is 0.75 inch for model 8473 probe. <br /> Minimum detectable water level in the tank is 0.38 inch when using TLS 350 with model 8463 A <br /> probe with 88610x-0x0 water float and software version 30B or higher, or TLS 450 with <br /> software version 3A or higher. <br /> Minimum detectable change in water level is 0.005 inch for leak rate of 0,2 gph. <br /> Minimum detectable change in water level is 0.027 inch for leak rate of 0.1 gph. F <br /> Minimum detectable change in water level in tank is 0.01 inch when using TLS 350 with <br /> model 8463 probe with 88610x-0x0 water float and software version 30B or higher, or TLS <br /> 450 with software version 3A or higher. <br /> Calibration Thermistors and probe must be checked and, if necessary, calibrated in accordance with <br /> manufacturer's instructions. <br /> Comments Not evaluated using manifolded tank systems. Therefore, this certification is only applicable <br /> when there is a probe used in each tank and the siphon is broken during testing. <br /> Tests only portion of tank containing product. <br /> As product level is lowered, leak rate in a leaking tank decreases (due to lower head <br /> pressure). <br /> Consistent testing at low levels could allow a leak to remain undetected. <br /> EPA leak detection regulations require testing of the portion of the tank which routinely <br /> contains product. <br /> California regulations require at least one test per month after routine product l <br /> delivery or when the tank is filled to within 10% of the highest operating level of <br /> previous month. If the 0.1 gph test is used as a tank tightness test there must be 1 <br /> no water present in the backfill (groundwater must be below the bottom of the <br /> tank),the tank must be equipped with an overfill protection device,and the <br /> product level in the tank must be at the overfill protection device set point. Local <br /> agency pre-approval is required. To use the 0.1 gph test as a monthly option see ` <br /> title 23 CCR Section 2643 (b)(2). <br /> Veeder-Root Evaluator: Ken Wilcox Associates ' <br /> 125 Powder Forest Dr. Tel: (816)443-2494 <br /> Simsbury, CT 06070-2003 Dates of Evaluations: 06129198, <br /> Tel: (860)651-2700 (Revised 4117102, 2129108) <br /> E-mail: dhallaC@veeder.com <br /> URL: www.veeder.com <br /> Home I Vendors: A-F I Vendors: G -M Vendors: N -S I Vendors: T -Z C Method Index <br /> Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any <br /> guarantee of the performance of the method or equipment. <br /> Equipment should be installed and operated in accordance with all applicable laws and regulations. <br /> For full details, please refer to our expanded "DISCLAIMER"page. <br /> 1-ittp://www.waterboards.ca.gov/water issues/progranis/Lrst/leak preventioiAg113/vendors/... 1/21/2014 <br />