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E. IN LUENT WASTEWATER CHARACTERISTICS <br /> The influent wastewater characteristics shall be equivalent to wastewater generated from a normal <br /> household complying with the'following typical domestic wastewamf parameters: <br /> BODS 100-300 mg/L <br /> SS 100-350 mgtL <br /> F. LOADING REQUIREMENTS <br /> 1. DESIGN LOADING: The plant shall be hydraulically loaded at its rated daily capa&yl <br /> according to the following pattern of flow: <br /> 6 a.m. - 9 a.m. 35% of total daily flow <br /> 11 a.m. - 2 p.m. 25% of total daily flow <br /> 5 P.M. - 8 P.M. 4090 of total daily flow <br /> 2. STRESS TESTING`: The plant shall be hydraulically loaded as indicated in the <br /> applicable figure in the following sequence: <br /> • Wash Day (Figure Al), <br /> • Woridng parents (Figure A2). <br /> • Equipment or Power Failure (electrical equipment off) (Figure A3), <br /> • One weer vacation followed by shock loading. Typical of a family's remm <br /> �. fan vacation (Figure A4). <br /> sRated daily capacity is the designed treatment of the plant. Note the example below: <br /> Effect of Testing at Design Loading <br /> Assume average family = 5 persons <br /> and average water use = 189 L/person/day (50 galsJperson/day), then daily household <br /> waste = 946 Lpd (250 gpd). <br /> Therefore, testing at rated daily capacity provides greater loading to plant than average <br /> family might be expected to contribute. <br /> If minimum plant size = 1892 Lpd(500 gpd),then design loading simulates: Use by 10 <br /> persons @ 189 U/person/day (50 gals/person/day): or use by 5 persons @ 378 <br /> L/person/day (100 gals/person/day), or equal. <br /> Basis for 60% loading used to simulate woridng parents, equipment/power failure, and return from <br /> vacation: <br /> Assume 5-person occupance and 1892 Lpd(500 gpd) design capacity for aerobic system: Then <br /> 2 flushes/person @ 95 I./flush (25 gals) = 189 L (50 gals) <br /> 1 shower/person @ 76 Ulshower(20 gals) = 379 L (100 gals) <br /> 3 loads washing @ 132 L/load (35 gals) = 379 L (105 gals) <br /> Food preparation and dishes (est.) = 114 L 30 ale <br /> 1079 L (285 gals) <br /> =60% Design Flow (approximately) <br /> B2 <br />