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Page 22 <br /> septic system that is poisonous or that may inhibit the digestive abilities of its working microbes.An excellent <br /> guideline is not to dispose anything into the tank, with the exception of toilet tissue and mild detergents, that <br /> hasn't first been ingested. A simple educational program tailored to encourage homeowners' compliance can <br /> cure most septic tank problems and reduce the need for premature septage pumping. <br /> Commercial Connections <br /> Multiple user sites include small clusters of homes that can be economically connected together, schools, <br /> offices, industries, institutions and commercial businesses. They generally have one or more primary tanks <br /> followed by a pump tank. The tank just preceding the pump tank is usually equipped with one or more effluent <br /> filters. <br /> Schools, restaurants, meat plants, or other food processors must pay special attention to handling of fats, oils <br /> and greases. Grease tanks are essential, and the effluent from them must be routed through the primary tank(s) <br /> rather than directly to the pump tank. Daily flow, peak flow duration and wastewater strength may necessitate <br /> additional tankage. Adequate grease tank design requires a detailed knowledge of water temperatures, ambient <br /> temperatures, waste strength (BOD), types of solvents, detergents and chemical cleaners in use. Grease tanks <br /> may vary in size from one to three times the daily flow and may require solids or grease removal as frequently as <br /> every three to six months. <br /> Typical STEP Connection Drawing <br /> New Interceptor Tank Connection <br /> Control Panel Top VIUw tNISI PVC Splice Box <br /> Model Simplex Pumping Systam WICord Grips <br /> �► Modal <br /> 0 Lit <br /> _ Fiberglass Gasketetl Lld wIM <br /> Slelrlesa Steel Bolls <br /> Model <br /> Fiberglass Gaskolod Lld Sbpe Ground <br /> with Stainless Sleel Bolls PVC Riser v hh Gmm—lh,t <br /> Model Axoy from Riser Model <br /> Pommel blscha,po Assonmly <br /> PVC Riser with GrommotisY To Control ' Model <br /> Model <br /> Conduit Seal F7etfite Vase <br /> Model Unx-nt Dischorce <br /> Inlet Tee' —� anI,Adapter(Cast or Boiled) <br /> Model <br /> Raa(ndu,:ef <br /> _ Level Control <br /> Floor Assembly <br /> Model <br /> Finer Corrridge <br /> ___._..V100 Aofel Pads <br /> Orenco Effluent Pu V <br /> Model <br /> —8lotubr¢Pump Vault <br /> Mode) <br /> Figure 3. Concrete STEP connection. <br />