5/2/2002 BOARD OF HEALTH Minutes

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past. But, because of their deep application and the time of year that they conducted the study. They were able to avoid any fish kill. since thea they have been monitoring to see the phosphorus levels in the plume to see how they responded. The initial indications are that they have locked a good portion of the phosphorus up into the sediments and to get it out of circulation. They won't know for sure until the spring algae bloom happens here. They will be watching it very closely. As soon as they get information on that they will be happy to share it with the BOH. Mr. Santos stated that he went to the meeting where they were making the proposal, Years ago he worked in theenvironmental field. He knows that there was an outbreak in the bottom of the pond. They never did stop the source of what was feeding the plume. 1t was absorbing the liquid after it had leaked out of the tank rather than plugging the tank. Has that been accomplished? IVIr. Gill stated that they have started a small-scale pilot study to look at intercepting that phosphorus before it cane into the pond. There were several test beds of iron put on the shallow water just north and east of Fisherman's cove. They have been monitoring those and have determined that it has been effective enough that they are going to expand that pilot study into a lamer area. They are working with the UMAss Dartmouth on that project. They are going to be expanding that study this summer and determine if they meed to go to a full scale application across the entire footprint where that -phosphorus plume comes into the pond. The initial indication is encouraging. Between cutting that off and locking up the phosphorus that was already in the pond should serve as one two punch on the phosphorus issue. Mr. Santos asked if that was the new technology that had been tried. Mr. Gill stated that it was the first time that it was that sleep. The phosphorus has been used even on other ponds on the cape. It was usually spread on the surface, which generally results in a fish Kill. By setting it deeper they were able to avoid a lot of that. IVIS. Warden asked if they had done any testing in bloody Pond. Mr. Gill replied that they have worked with USGS over this last six months and put out a bunch of diffusion samplers there in the sediments in the bottoms to see ghat kind of contaminants were up-welling. They found some trace amounts of some contaminants, But, nothing over the drinking water standards. He then asked Bob Lil and Justin IVlierz if they remembered any details of what they found in Moody Pond.