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ninth day, the system shall receive 60% of the total daily flow, which shall include 3 wash loads (3 wash <br /> cycles and 6 rinse cycles). <br /> 8.2.3 Dosing volumes <br /> The 30-d average volume of the wastewater delivered to the system shall be within 100% ± 10% of the <br /> system's rated hydraulic capacity. <br /> NOTE—All dosing days, except those with dosing requirements less than the daily hydraulic capacity, shall be <br /> included in the 30-d average calculation. <br /> 8.3 Sample collection <br /> 8.3.1 Sampling frequency <br /> Influent and effluent samples shall be collected three times per week during design loading periods and twice <br /> during each stress recovery period (the week following completion of each of the stress simulations <br /> described <br /> in 8.2.2.2). This schedule shall be continued in the event that testing is extended beyond the 26-wk <br /> minimum. <br /> 8.3.2 Collection methods <br /> All sample collection shall be in accordance with Standard Methods, unless otherwise specified. Influent <br /> wastewater samples shall be flow-proportional, 24-h composites obtained during periods of system dosing. <br /> Effluent samples shall be flow-proportional, 24-h composites obtained during periods of system discharge. <br /> Effluent samples shall be representative of all treated effluent discharged from the system, as sampled from <br /> a <br /> central point of collection of all treated effluent. Grab samples shall be collected for pH, temperature, and <br /> dissolved oxygen (DO). The location of the grab sample shall be appropriate to provide a sample that is <br /> representative of the influent or effluent, and shall be determined in conjunction with the manufacturer. Grab <br /> samples shall be collected during the morning dosing period for gravity flow systems and during a time of <br /> discharge for systems that are pump discharged. <br /> 8.3.3 Analyses <br /> The samples collected as described in 8.3.1 and 8.3.2 shall be analyzed as follows: <br /> 15/10/055/0030 This report may not be reproduced in whole or in part Page 30 of 64 <br /> Final Nitrogen Report without the expressed written consent of NSF International June 2019 <br />