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Susan Reynolds Plan View & Cross Section Page 3 of 3 <br /> Observation/Vent Pipes <br /> i <br /> Finished Grade= F 7 <br /> Finished Grade= /F 3> / / <br /> Slope% <br /> Original Grade <br /> Original Grade <br /> Top of Shell <br /> System Elev. <br /> I" Treatment and Dispersal Zone <br /> I <br /> -- Limiting Factor <br /> Observation/Vent pipes to be constructed and <br /> capped with approved materials for the particular use. <br /> GPD 600 :/ 1.2 = 500 / 17 .7 = 28.249 or 29 Total Bio Diffuser Chambers <br /> OBERVATION PIPE <br /> VENT <br /> o <br /> 29 14` BIO DIFFUSERS <br />