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• Drain Field— Excavate the drain field trenches in the area depicted on Figure 2. Distribution to the <br /> drain field trenches will be accomplished through the installation of drop boxes at the center of the drain <br /> field. Two trenches 3' x 19' will connect to each of the five drop boxes. Each trench will contain 3 <br /> Infiltrator�High Capacity Gravelless Chambers for a total of 30 chambers. Depth of excavation shall be <br /> 2.5 feet on the uphill side of the trenches and level. Install backfill loamy soil and seed for cover. <br /> • Insulation— Due to the potemial for componems fi�eezing we recommend insulating the septic tank <br /> and lift tank by placing 2"of polystyrene insulation on the top of the tank. Insulating the building sewer <br /> pipe from the house to the septic tank by placing 2" of polystyrene over the pipe, extending at least 2' <br /> from each side of the pipe. Insulating the supply fmm the lift tank to the drain 5eld by placing 2" of <br /> polystyiene over the supply line, extending at least 2' on each side of the pipe. <br /> 7. Limitations - Our investigation, layout, design, and recommendations are based on data submitted. <br /> ff conditions considerably different from those descn'bed in this report are encountered, we must be <br /> notified. If proposed construction is changed, we must be notified to evaluate the effect of the changes <br /> on the wastewater system. Any changes to the de.sign must be approved by the designer and will be <br /> assessed additional design costs. If changes are made to the design without the l�owledge and approval <br /> of the designer the design shall be void All construction is to be in accordance with the ISTS <br /> regulations. Pipe type and size, installation requirements, septic tank construction, and other <br /> specifications not depicted in our report are to conform to ISTS regulations. The installer of the system <br /> is to be licensed by the Minnesota Pollution Control Agency. <br /> I certify that this plan, docume�or report was prepared by me or under my direct supervision and that I <br /> am a duly licensed Professional Soil Scientist under the laws of the State of Minnesota. If you have <br /> questions,please feel free to call. <br /> Sincerely, <br /> eter G. ller, .S.S. <br /> Designer I NiPCA Certification#2341 <br /> 3 <br />