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HomeStead Septic System Services <br /> 1108 Goldenrod Lane <br /> Shakopee,MN 55379 <br /> Dale Denn <br /> 952 233-0214 <br /> August 25�',2008 <br /> To: Jeff McCall <br /> Re: Church Septic System located at 525 I.eaf Street <br /> �=-f <br /> Dear Jeff, <br /> I did review the letter from the City of Orono regarding your septic system for the church and I <br /> did receive and review the septic system plan you sent me also. Below is my opinion of the <br /> overall design of the septic system. <br /> In summary,the design does appear to have taken into account the major design concern for <br /> churches in that they tend to have high effluent flows intermittently with little or no flow when <br /> there are no church services. This tends to be the same scenario when the facility would be used <br /> for weddings and receptions also. <br /> From my experience and training,the best way to account for and manage high intermittent <br /> flows is with a timer system and a lazge pump chamber. This system does have both. The <br /> essence of this is that the timer prevents the mound from being over dosed at any one time and <br /> the excess effluent is held in the pump chamber and pump out gradually over time. You will <br /> know if eventually too much effluent is being generated because the alarm in the pump sta.tion <br /> would sound. <br /> The suggestions made by Mr. Gibbs are noteworthy ones to consider and would apply to any <br /> septic system,maybe excluding the water meter for residential systems. <br /> I did check the depth of solids in the first septic tank for the church which was about 4 inches <br /> with only a thin scum layer. It seems the tank was pumped within less than 3 years. Since I was <br /> there with the pump truck,I did pump the first septic tank for the church. A little extra pumping <br /> doesn't hurt. <br /> It is my opinion that this design for the church and the carriage house is adequa.te and deals <br /> effectively with the high intermittent flows that are generated by church establishments. <br /> Feel free to ca11 me at 612 310-7887 if you have any more questio�s or concerns. <br /> Dale Denn <br /> HomeStead Septic <br /> MPCA License#583 <br />