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S~G~I®N II. ®~FINI~I®NS 2.01 Absorption System -waste water disposal field or leaching field and adjacent soils or other system for the treatment of sewage in an individual sewage disposal system by means of absorption into the ground and may include evapotranspiration. 2.02 Absorption Trench -one or more trenches not over three (3) feet in width in which sewage ef}luent is percolated into the soil. 2.03 Aerobic Sewage Treatment System - an individual sewage disposal system employing biological action which is maintained by the addition of air or oxygea 2.04 Analytical Pazameter - ~ A. Temperature (Tl: the measure of the thermal state of a substance with respect to it's P abdity to communicate heat to it's em~ironment, reported as degrees Centigrade (C ). v A B_ Suspended Solids (SS): solids in the sewage that can be removed readily by standard filtering procedures in a laboratory, reported as milligrams per liter (mg/1). Also termed suspended matter. ~ ~ C. Volatile Suspended Solids IVSS): the quantity of solids in sewage which aze lost on ~ ignition of the dry suspended solids at 600` C, reported as mlligrams per liter (mg/l). I' D. Settleable Solids: solids in the sewage which will settle, as distinct from remaining ~ in suspension, reported as milliliters per liter of sample after forty five (45) minutes ~' of settling time (mU45 min). E, ~ the logarithm of the reciprocal of the hydrogen-ion concentration. L' F. Dissolved Oxygen~D01: the oxygen dissolved in sewage, reported as milligrams per ~ liter (mg/l). I~ Ci. Five-Da~Biochemical Oxygen Demand (BODs): the quantity of oxygen used in the biochemical oxidation of organic matter in five days at 20 C under specified I ~ conditions, reported as milligrams per liter (mg/1). H. Such other parameters as may be requved by the Health Officer. ld 2.05 Applicant -any person who submits an application for a permit for an individual sewage ~ disposal system. ~, ~. 5 n u