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During periods of design loading, daily composite effluent samples shall be collected and analyzed 5 days a <br /> week. <br /> 8.3.3 Stress loading <br /> During stress loading, influent and effluent 24-h composite samples shall be collected on the day each stress <br /> condition is initiated.Twenty-four h after the completion of washday,working-parent, and vacation stresses, <br /> influent and effluent 24-h composite samples shall be collected for 6 consecutive days. Forty-eight h after the <br /> completion of the power/equipment failure stress, influent and effluent 24-h composite samples shall be <br /> collected for 5 consecutive days. <br /> 8.4 Analytical descriptions <br /> 8.4.1 pH, TSS, BOD5, and CBOD5 <br /> The pH, TSS, and BOD5 of the collected influent and the pH, TSS and CBOD5 of the collected effluent 24-h <br /> composite samples shall be determined with the appropriate methods in Standard Methods for each listed <br /> parameter. Grab samples shall be collected during the morning dosing period for gravity flow systems and <br /> during a time of discharge for systems that are pump discharged. <br /> NOTE-Standards Methods requires pH and temperature to be sampled as grab samples. <br /> 8.4.2 Color, odor, oily film, and foam <br /> 8.4.2.1 General <br /> The effluent composite samples shall be diluted 1:1000 with distilled water. Three composite effluent <br /> samples <br /> shall be tested during the 6-month evaluation period. <br /> 8.4.2.2 Color <br /> The apparent color of the diluted effluent samples shall be determined with the visual comparison method <br /> described in Standard Methods. <br /> 8.4.2.3 Odor <br /> A panel consisting of at least 5 evaluators shall qualitatively rate 200 mL aliquots of the diluted effluent <br /> samples as offensive or non-offensive when compared to odor-free water prepared in accordance with <br /> Standard Methods. <br /> 8.4.2.4 Oily film and foam <br /> Diluted effluent sample aliquots shall be visually evaluated for the presence of an oily film or foaming. <br /> 8.5 Criteria <br /> 8.5.1 General <br /> 8.5.1.1 If conditions during the testing and evaluation period result in system upset, improper sampling, <br /> improper dosing, or influent characteristics outside of the ranges specified in 8.2.1, an assessment shall be <br /> 15/10/055/0030 This report may not be reproduced in whole or in part Page 26 of 59 <br /> Final Report without the expressed written consent of NSF International January 2019 <br />