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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. Systems shall be designated as Class I or Class II. The performance classification shall be based <br /> upon the evaluation of effluent samples collected from the system over a six-month period. <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 filling 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 3 wk of filling the system and, except as specified in <br /> 8.5.1.2, shall continue without interruption until the end of the evaluation period. <br /> 8.1.4 If conditions at the testing 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 evaluation delays. All <br /> repairs made 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 permitted during the performance testing and evaluation <br /> period. <br /> NOTE—The manufacturer may recommend or offer more frequent service and maintenance of the system but <br /> for the purpose of performance testing and evaluation,service and maintenance shall not be performed beyond <br /> what is specified in this Standard. <br /> 8.2 Testing and evaluation conditions, hydraulic loading, and schedules <br /> 8.2.1 Influent wastewater characteristics <br /> The 30-d average BOD5 concentration of the wastewater delivered to the system shall be between 100 mg/L <br /> and 300 mg/L. <br /> The 30-d average TSS concentration of the wastewater delivered to the system shall be between 100 mg/L <br /> and 350 mg/L. <br /> 15/10/055/0030 This report may not be reproduced in whole or in part Page 23 of 59 <br /> Final Report without the expressed written consent of NSF International January 2019 <br />