7/1/2004 BOARD OF HEALTH Minutes

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F i by getting less than 10 milligrams per liter. But, before they could do the denitrification with l itrex they needed a nitrification step. They had originally proposed last fall an Advantex, which was kind of like a condensed re-circulating sand filter. Instead of using sand it used fabric filter units. In their discussions with the Nitrex folks who had sent this up Lombardo Associates, They said that in order to get the Advantex in this short time frame would be pretty difficult if not impossible. They suggested using the Waterloo Bio-filter instead, which would also nitrify and would in fact do some denitrification but not down to less than 10 like the nitrates carp.' 'hat was their reason for going to Waterloo. They sent a couple of entre copies of the Nitrex details, which would show a little bit different set u than ghat the had on p these plans in front of therm. When they seat therm in they had got quite as much of the detail from the l itrex folks. This should provide more detail* There were some changes made with these because they were preliminary also from the I itrex people. They do show that the basic flog through the system will remain the same with some slight changes. Mr. Ball wanted to understand this in the CPD realm. Mr. Harrington replied that 5226 CPD was proposed. That was also what the pollution capacity was,, They could not get more than that. They could come back in front of them. The reaching was already of total build out of ghat they were requesting: They were not showing two residential buildings and/or the retail on it right new. But, they were asking for the approval for the leaching for 5226 GPD, which were 43 bedrooms and 9200 square feet of retail. Not all of that was shown on the plans. The leaching will be built out, But, they were not showing the build out of all of the buildings that were requested. They were saving two other buildings and the retail for later approval, They were asking for approval for all of the septic portion of it. They were going about this in a round about way, The property was in a Zone 11, light now they were also taking the create for the lit rex and the Bio-filter as being an innovative technology. They were saying that they were getting 660 CPD per acre of credit for the residential. The 1 itrex would give 550 CPD per acre of credit for the commercial. He had this figured and what they were doing was that the consultant was requesting that they were doing this all as one shared system. tight now Title V did not allow them to get than credit, But, they were also showing on the smaller pians that each of the individual properties could be fitted with denitrification systems themselves. You could have 14 individual alternative septic systems. But, that was one question he had. In doing this regarding that part code, was it not a variance? Did a variance need to be requested for that? The code 15,,202 4F states than you either use 440 GPD or get a groundwater discharge permit. You could do either or. What they were doing was okay and he felt 29