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F <br />u <br />11 <br />11 <br />Results of U.S. EPA AlternativeEvaluation <br />Liquid <br />Level Sensor <br />This form documents the performance of the liquid level sensor described below. The <br />evaluation was conducted by the equipment manufacturer or a consultant to the <br />manufacturer according to the U.S. EPA's requirements for alternative protocols. The <br />full evaluation report also includes a report describing the method, a description of the <br />evaluation procedures, and a summary of the test data. <br />Tank owners using this system should keep this form on file to prove compliance with <br />the federal regulations. Tank owners should check with state and local agencies to <br />make sure this form satisfies their requirements. <br />Method Description <br />Name Single -Point Mini Hydrostatic Sensor <br />Version number(s) Form No. 794380-304, for use with ILS -350, TLS 300 Series, <br />TLS -350 Series EMC Series, EMC Basic, Red Jacket ProMax, and Red Jacket <br />ProPlus <br />Vendor Veeder-Root <br />(Name of Manufacturer) <br />125 Powder Forest Drive P.O. Box 2003 <br />(Address) <br />Simsbury CT 06070-7684 (860) 651-2700 <br />(City) (State) (Zip Code) (Phone) <br />Evaluation Parameters <br />The sensors listed above were tested for their abilities to respond to liquids when the <br />sensors are installed in underground storage tank applications. The following <br />parameters were determined from this evaluation. <br />Threshold (Lower Detection Limit) - The smallest product thickness that the detector <br />can reliably detect. <br />Precision (standard deviation) - Agreement between multiple measurements of the <br />same product level. <br />Detection Time - Amount of time the detector must be exposed to product before it <br />responds. <br />Fall Time - Amount of time before the detector stops responding after being removed <br />from the product. <br />Specificity - Types of products that the sensor will respond to. <br />