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Rolefson Excavating L.L.C is a Sewer Water Grading in Rubicon, Wisconsin. Rolefson Excavating and Septic Systems in Septic Systems Installer, Sewer, Water, Grading, Trenching, Landscaping. Design and installation of all types of septic systems: Conventional Systems, Mound Systems, In-ground pressure Systems, At Grade Systems, Holding Tanks, Aerobic Systems, Experience with difficult septic sites, Repair and Replacement work, Soil Testing, Site Evaluation, Sewer and Water Laterals and Sewer Camera and Location. Excavating: Basements, Additions, Site Work, Garages, Installation of new driveways, Experience with working in tight or small areas and Directional Boring. Excessive grease can congeal in the sewer line to the septic tank or inside the tank. The septic tank may accumulate a layer of solid fat, which cannot be readily broken down by bacterial action. Grease should be treated as garbage and kept out of the septic tank whenever possible. Sanitary napkins, condoms, cotton swabs, dental floss, tampons, hand wipes, infant wipes, disposable diapers, and cigarette filters. These products are made of cellulose, plastic or other non-biodegradable components. When disposed of through the septic system, these chemicals may kill septic tank bacteria. This can result in a severe decline in decomposition of the septic tank solids. It can take several weeks for the bacteria in the septic tank to re-establish. Building foundation drains, humidifier, and water softener discharges are considered clear water, which may be disposed into the ground separate from the septic system. However, discharge from the softener during the recharge cycle is salt brine which, in excessive amounts, could have an adverse affect on septic tank bacteria.