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PROJECT: Ahern Road Fueling Station February 28, 2022 <br /> Job No: 20-544 Ross P.Shoat Civil Engineer <br /> 3225 gpd (average daily flow)/386 g/sf=4,103 sf of disposal area. For final design 4,320 sf of <br /> trench will be used. The disposal field will consist of 6 alternately dosed zones each containing <br /> 360 lineal feet of 2'trench. (6x360'x2'=4,320 sf) <br /> The system flow is as follows: Effluent from the building will enter either the grease trap or the <br /> Septic tank directly. The flow will then go into a pre-Anoxic tank where it will be mixed with <br /> primarily treated effluent and any needed Alkalinity before entering the First Recirculation <br /> Tank. The Effluent in the First Recirculation Tank is recirculated over the Primary Filter bank <br /> until the level reaches the required height and then is shunted to the Post-Anoxic Tank. The <br /> Post-Anoxic tank them feeds the Secondary Recirculation Tank which in turn recirculates the <br /> effluent over the Secondary Filter Bank. The treated Effluent is then shunted to the Dosing <br /> Chamber that Doses the treated effluent into the Leach Filed area through a flow meter and <br /> indexing valve. <br /> Page 4 Of 11 <br />