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EXECUTIVE SUMMARY <br /> Testing of the Orenco Systems AdvanTex AX20N 500 gpd treatment system, was conducted under the <br /> provisions of ANSIINSF Standard 40 for Residential Wastewater Treatment Systems (July 2000 revision). i <br /> ANSIINSF Standard 40 was developed by the NSF Joint Committee on Wastewater Technology. <br /> The performance evaluation was conducted at the Mamquam Wastewater Technology Test Facility located ' <br /> in Squamish, British Columbia, using wastewater diverted from the Mamquam municipal wastewater <br /> treatment plant which serves. predominantly residential development. The Mamquam Wastewater <br /> Technology Test Facility, operated by NovaTec Consultants of Vancouver British Columbia, is a Standard <br /> 40 subcontractor for NSF. The evaluation consisted of six days of dosing prior to starting the test, followed <br /> by sixteen weeks of dosing at design flow, seven weeks of stress test and three weeks of dosing at design <br /> flow. Sampling was initiated on May 14, 2001. However, the test wasn't officially started until May 20, 2001 <br /> since there were only three sample days during the first week. Sampling started in the spring and continued <br /> into the fall, covering a range of operating temperatures. <br /> Over the course of the evaluation,the average effluent CBOD5 was 5 mg/L, ranging between <2 and 25 mg/L, <br /> and the average effluent suspended solids was 4 mg/L, ranging between <2 mg1L and 42 mg/L. <br /> The AdvanTex AX20N produced an effluent that successfully met the performance requirements established <br /> by ANSIINSF Standard 40 for Class I effluent: <br /> The maximum 7-day arithmetic mean was 14 mg/L for CBODS and 11 mg/L for suspended solids, <br /> both below the allowed maximums of 40 and 45 mg/L respectively. The maximum 30-day <br /> arithmetic mean was 8 mg/L for CBOD5 and 6 mg/L for suspended solids, both below the allowed <br /> maximums of 25 mg/L and 30 mg/L respectively. <br /> The effluent pH during the entire evaluation ranged between, 6.0 and 7.2, within the required range of 6.0 <br /> to 9.0. The plant met the requirements for noise levels (less than 60 dbA at a distance of 20 feet), color, <br /> threshold odor, oily film and foam. <br /> 01111120151060 This report may not be reproduced in whole or in part Page 2 of 46 <br /> Final Report without the expressed written consent of NSF International. April 2002 <br />