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1 <br />' The selection of the absorption system will also be dependent to some <br />extent upon the location of the system in the area under consideration. A <br />safe distance should be maintained between the site and any source of water <br />supply. Since the distance that pollution will travel underground depends <br />' upon numerous factors, including the characteristics of the subsoil <br />formations and the quantity of sewage discharged, no specified distance <br />' would be absolutely safe in all localities. Ordinarily, the greater the <br />distance, the greater will be the safety provided. <br />' Proper maintenance is important to the efficient operation of septic tanks. <br />Chapter 1OD-6.5 of the F.A.C. states: "Septic tanks should be checked at <br />' least once every three years (once a year if garbage grinders are <br />discharging to the tank)". If either sludge or scum approaches the outlet <br />' too closely, particles will be scoured into the disposal field and will <br />clog the system. Eventually, liquid may break through to the ground <br />surface, and the sewage may back up in the plumbing fixtures. When a <br />disposal field is clogged in this manner, it is not only necessary to clean <br />the tank, but it may also be necessary to construct a new disposal field. <br />Actual inspection of sludge and scum accumulations is the only way to <br />' definitely determine when a given tank needs to be pumped. When a tank is <br />inspected, the depth of sludge and scum should be measured in the vicinity <br />' of the outlet baffle. Chapter 1OD-6.5 of the F.A.C. states: "Tanks should <br />be cleaned whenever the bottom of the scum layer is within eight (8) inches <br />' of the top of the outlet device or when the sludge level is within eighteen <br />(18) inches of the bottom of the outlet device". <br />' 3.3 GROUNDWATER PROTECTION <br />' The potential groundwater contamination situation demands proper management <br />of water use and waste disposal as the basis of safeguarding the fresh <br />' groundwater supply. A cooperative effort among federal, state, regional, <br />and local authorities is necessary to accomplish this task. The following <br />IIRC.VB4 <br />