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4 <br /> The data for April shows total nitrogen at 1.65 parts per million, with a flow between 4,900- <br /> 9,,000 gallons per day. <br /> Stratford Fonds is permitted for 86 more units. <br /> From the amphidrorne reactor, the final effluent goes to a clear well waiting instructions from <br /> the computer to send the material up to the discharge field. Ten yew ago computer technology <br /> was not sophisticated enough to do this cheaply enough on such a small scale. <br /> Toni asked if the system is set up to recycle the flow, if necessary. Mr. Grassetti said it is. <br /> Worn asked why the effluent waits in a clear well? <br /> fix. Grassetti explained it Waits until they have enough volume because it is a force main (to the <br /> discharge field). <br /> How often do you have to change the `filter"'? <br /> Mr. Grassetti said the gravel is aver bank stone from the mid west. He has been told it will last <br /> 15-20 years. They back gash it every day, however material does still adheres to the stone (like <br /> plaque on teeth) and will need to be replaced in 15-20 years. <br /> Dennis asked if there is a problem with disposal of the stone` <br /> There is no problem. <br /> John asked if the system is guaranteed to the ton` <br /> Mr. Grassetti explained they have posted a bond with the State. The condo association has to <br /> satisfy the Mate and the Planning Board. The Planing Board requires effluent of only 5 parts per <br /> million, State requires 10 parts. <br /> John thinks it is a fascinating system and he is very impressed with it. <br /> Tom asked the cost of the plant? <br /> Mr. Grasseth said it cost $400,000-$500,,000 for a 35,,000 gallon per day plant which can handle <br /> 161 units. <br /> Torn asked how scaleable the plant is, how small can it be designed? <br /> Mr. Grassetti said there is one installed in Wa luoit as part of heir study ser k ing only 1 house. <br /> They have had problems with that one because there is not enough bacteria to do the job. <br /> You can add bacteria. The system can be brought down to a #5 bedroom home, certainly down <br /> to the size to service a neighborhood. <br /> Dennis asked the cost to run the plant? <br /> Mr. Grassetti said it is about$30,,000 per year for everything- chemicals, electricity,, operator. <br /> Mr. Grassetti explained the project had monitoring wells installed. The well downstream of the <br /> plant,before operation of the plant, tested at 8 parts per million. After the plant was on line for <br /> months, it was tested again and had dropped to 4 parts per million. <br /> e said they turned the plant on about I year ago but had to wait a couple of months for the tams <br /> 2 <br />