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8 Performance testing and evaluation <br /> This section describes the methods used to evaluate the performance of residential wastewater treatment <br /> systems designed to remove nitrogen from residential wastewater. Performance testing and evaluation shall <br /> not be restricted to specific seasons. <br /> 8.1 Preparations for testing and evaluation <br /> 8.1.1 The system shall be assembled, installed, and filled in accordance with the manufacturer's <br /> instructions. <br /> 8.1.2 The manufacturer shall inspect the system for proper installation. If no defects are detected and the <br /> system is judged to be structurally sound, it shall be placed into operation in accordance with the <br /> manufacturer's start-up procedures. If the manufacturer does not provide a start-up procedure, % of the <br /> system's capacity shall be filled with water and the remaining '/3 shall be filled with residential wastewater. <br /> 8.1.3 The system shall undergo design loading (see 8.2.2.1) until testing and evaluations are initiated. <br /> Sample collection and analysis shall be initiated within three weeks of filling the system and shall continue <br /> without interruption until the end of the evaluation period, except as specified in 8.4.2. <br /> 8.1.4 If conditions at the test site preclude installation of the system at its normally prescribed depth, the <br /> manufacturer shall be permitted to cover the system with soil to achieve normal installation depth. <br /> 8.1.5 Performance testing and evaluation of systems shall not be restricted to specific seasons. <br /> 8.1.6 When possible, electrical or mechanical defects shall be repaired to prevent delays. All repairs made <br /> during the performance testing and evaluation shall be documented in the final report. <br /> 8.1.7 The system shall be operated in accordance with the manufacturer's instructions. However, routine <br /> service and maintenance of the system shall not be allowed during the testing and evaluation period. <br /> NOTE—The manufacturer may recommend or offer more frequent service and maintenance of the system, but <br /> for purpose of performance testing and evaluation,the service and maintenance shall not be performed beyond <br /> what is specified in this Standard. <br /> 8.1.8 Prior to initiation of design loading, the air delivery component (if one is utilized) - either air <br /> compressor or blower- shall be connected to the system and run for a minimum of four hours. Air <br /> pressure shall be measured by a pressure gauge installed near the exhaust port of the air delivery <br /> component and that reading recorded. Then the air compressor or blower component shall be <br /> disconnected from the system and the air flow measured at the system pressure and recorded. <br /> 15/10/055/0030 This report may not be reproduced in whole or in part Page 27 of 64 <br /> Final Nitrogen Report without the expressed written consent of NSF International June 2019 <br />