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RST°'-II INSTALLATION INSTRUCTIONS 1 ,500-Gallon & 1 ,000-Gallon Residential Septic Tanks 1.GENERAL 4.BACKFILLING AND INSTALLATION 1.1.Comply with all federal,state and local laws,regulations,codes 4.1.The RST-II must be installed using either pea gravel,crushed and safety precautions. stone,or clean,compacted sand as backfill material. CAUTION 4.2.The backfill material must be clean and free of debris.No piece of the backfill material should be larger than 1/2-inch in diameter. Do not install the tank in an area that has unstable soil 4.3.Prepare the bottom of the excavation so that it is smooth and conditions,or is subject to flooding or sliding,because flat.Make sure there are no large rocks or objects(greater than property damage may occur. 3/4-inch in diameter),or sharp rocks or objects. CAUTION 4.4.Put in a 6-inch-thick bed of backfill. After installing the tank,do not operate heavy equipment or allow 4.5.Carefully lower the tank into the excavation hole. traffic(with a wheel load of more than 2,500 pounds)over the site 4.6.When placing the tank,make sure it is level and at the proper because property damage may occur. grade. 1.2.If the tank is not going to be used immediately after installation, 4.7•Place one 12-inch lift of backfill material evenly around the tank. it is good practice to fill the tank with water as ballast. 4.8.Push the backfill in place by using a nonmetal probe long 1.3.Failure to follow these installation instructions may void the tank enough to reach beneath the tank.Work the backfill under the tank warranty. body and domes so the tank is fully supported.Make sure there are no voids under the tank. 2.HANDLING AND STORAGE 2.1.Lift the tank with straps or ropes by using the lifting eyes on top CAUTION of the flange. Do not strike the tank with the probe because tank damage may occur. ® WARNING 4.9.Backfill to the inverts of thePP 9 i in . Do not drop the tank because death or serious injury could occur. 4.10.Check to see that the plumbing matches up and install the 2.2.Store the tank on a surface that is smooth and flat.Make sure plumbing. there are no sharp objects that will come in contact with the tank. 4.11.Backfill to grade. 2.3.Secure the tank if it is in an area in which strong winds may occur. 3.EXCAVATION 3.1. Prepare an excavation hole that is a minimum of 9-feet-wide by 17-feet-long(for a 1,500-gallon tank)or 13-feet-long(for a 1,000- gallon tank). 3.2.The burial depth of the tank(between the top of the tank and grade)must be between 18 inches and 60 inches.The actual depth is determined by the plumbing requirements. 3.3.When determining the depth of the excavation,allow for a 6- inch-thick bed of backfill underneath the tank. 3.4.Be sure there are at least 18 inches between the side of the excavation wall and any point on the tank. XERXES® coavoannon 7901 Xerxes Avenue South, Minneapolis,MN 55431-1288 ■ (952)887-1890 ■ Fax(952)887-1882 www.xerxescorp.com 0 2004 Xerxes Corporation xri11/041h