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(3) Total Nitrogen: The average total nitrogen concentration of all effluent samples shall be less than <br /> 50% of the average total nitrogen concentration of all influent samples. <br /> (4) pH: Individual effluent values shall remain between 6.0 and 9.0 SU. <br /> 2.3 Test Chronology <br /> The system was installed under the direction of the manufacturer on August 15, 2017. The <br /> infiltration/exfiltration test, during which the entire system was tested for leaks,was completed on August 17, <br /> 2017. The unit was filled with 2/3 fresh water and 1/3 raw sewage and dosing was initiated at the rate of 450 <br /> gallons per day beginning August 18, 2017. The test was officially started on August 20, 2017. The stress <br /> test sequence was started on December 11, 2017 and ended on January 23, 2018. Testing was completed <br /> on February 16, 2018. <br /> 3.0 ANALYTICAL RESULTS <br /> 3.1 Summary <br /> Chemical analyses of samples collected during the evaluation were completed using the procedures in <br /> Standard Methods for the Examination of Water and Waste water22 n d edition. Copies of the data generated <br /> during the evaluation are included in Appendix C. Results of the chemical analyses and on-site observations <br /> and measurements made during the evaluation are summarized in Table I. <br /> 15/10/055/0030 This report may not be reproduced in whole or in part Page 9 of 64 <br /> Final Nitrogen Report without the expressed written consent of NSF International June 2019 <br />