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AY 12 ' 97 12 : 17 FROM VEEDER-ROOT SERVICE TO 915104205896 PAGE . 007i008 <br /> Results of Third Party Standard Evaluation <br /> Point s Liquid rDetectors <br /> This f meets the peffomameof the caW9 sensor riquid co=ct teak m ftwftd below. <br /> The evakiation was cordicted by the nt annufacturer ora 0 <br /> On <br /> Third Party Procedures developed rd• to the U.S. EPA`s &&andafd Test Procedure for EvaltiWing leak <br /> Detection Met id-PhOut-of-Tank Product Detectors•1 . <br /> Tank owners using this teak detection system should keep this form on file to prove compliance with the federal <br /> regulations. Tank owners should check with state and local agencies to verify that this form satisfies their <br /> requiremem. <br /> Method Description <br /> Name 259 5aks kdm Svzemg,. l <br /> Version,with Pn�ar fnr Sum (®7_4,490-2(381 - <br /> Vendo, Odards <br /> E <br /> (street address) <br /> CTI <br /> (City) (state) (zip) (phone) <br /> Detector output type: ual' ive <br /> Detector operating principle: -Electrical C6 nductivity Capacitance Change <br /> Interface Probe Product Permeable -Product Soluble Thermal Conductivity <br /> ,Pressure Switch _Magnetic Switch Other `--- 1 <br /> Detector sampling fr uen : Intermittent ntinuous <br /> Evaluation Results <br /> The detector described above was tested for its ability to detect test liquids in contact with the <br /> point sensor. The following parameters were determined: <br /> • <br /> Detection Accuracy - The measure of sensor response to the presence of liquids. <br /> • <br /> Response Time - Amount of time the detector must be exposed to liquid before it responds. <br /> -.Recovery Time- Amount of time that passes before the detector returns to its baseline reading <br /> after the test liquid is removed. <br /> • Lower Detection Limit - The smallest liquid concentration that the detector can reliably detect. <br /> • Product Activation Height - The height of liquid to cause sensor activation. <br /> • Specificity - Indicates the level of response, of the detector, to several different liquids. <br /> 1 <br /> Camegie Mellon Research Instbite. ma 12E a <br /> y ,�t C^a^*�ct teak Detection Sv!�tems: Fatal Report-November 11, 1991. <br /> t_ictuid-Cosset Prodvd Detest= Results-Form <br /> Page 1 of 2 <br />