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FEB <br />2 b% <br />BOOP( <br />landfill <br />site is a very valuable resource, and felt the <br />key <br />is to <br />have an overall master plan of how the site will look 50 years <br />from now. <br />Commissioners Eggert and Bowman both spoke of receiving <br />complaints as to not enough screening of the landfill from 1-95. <br />Donald Munksgaard next came before the Board to review <br />Sludge Management and the Septage and Grease Management <br />Feasibility Study. He noted their job was to evaluate and <br />determine the impact of sludge production in the county and <br />identify and evaluate alternatives. The problem obviously is <br />only going to increase. He then discussed the alternatives for <br />disposal of sludge, and advised that the recommended plan would <br />involve thickening of the sludge at a subregional facility <br />through anaerobic digestion and then use of a belt filter press <br />to reduce the liquid volume after which the sludge cake would be <br />disposed of at the landfill. He advised the north subregional <br />facility to which they refer is the Gifford treatment plant. <br />Mr. Munksgaard then reviewed the Septage and Grease Manage- <br />ment Feasibility Study, noting that presently there are six <br />private haulers with mixed loads of septage and grease, and these <br />are disposed of at the landfill in a pit. Nitrates are a leading <br />factor in pollution of ground water, and although nothing has <br />shown up in the landfill monitoring wells so far, they would <br />recommend this practice be stopped as soon as possible. Mr. <br />Munksgaard advised that they are recommending a co -treatment <br />system with the sludge and summarized from their report as <br />follows: <br />Currently, there are estimated to be approximately 48,000 persons served by <br />roughly 12,200 septic tanks within the County. Although substantial <br />development is projected within the County during the next 15 years, the <br />vast majority of growth will be served by sanitary sewers. In addition, <br />existing septic tanks will be replaced by installation of new sewers. <br />Actual septage production within the County is thus projected to decrease <br />from the current. levels of 2.87 million gallons annually to 2.04 million <br />gallons by the Year 2000. The number of active grease traps, however, is <br />projected to increase in conjunction with development of the County. <br />Annual grease production is projected to grow from 0.7 million gallons in <br />1985 to 1.3 million gallons in Year 2000." <br />- 1- <br />