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Who can perform the maintenance? <br />When scum or sludge depths exceed the requirements <br />above, a state -licensed professional maintainer needs to <br />remove the tank contents through the maintenance hole, <br />not the inspection pipes. <br />Maintenance through the inspection pipes does not <br />remove all solids from the tank and can cause damage to <br />the tank baffles, which are necessary to prevent sludge <br />and scum from entering the drainfield and causing <br />premature failure. Ensure your maintenance provider <br />removes all tank contents through the maintenance hole. <br />Can I use septic tank additives? <br />Minn. R. 7080.2450 prohibits the use of any product <br />intended to lessen the amount of accumulated solids in a <br />septic tank in order to reduce the frequency of proper <br />maintenance. The use of additives does not fulfill the <br />solids removal requirement of the rule. Additionally, <br />additives containing hazardous materials must not be <br />used in an SSTS. <br />Need more information? <br />For additional SSTS information, please visit our Web <br />site at http://www.pca.state.mn.us/programs/ists/ or <br />call us at 651-296-6300, toll free 800-657-3864. <br />Septic Tank Maintenance • wq-wwists4-35 • July 2008 <br />Page 2 <br />M[nne5oCa Pollution <br />C6111r6I Rgerlcy <br />