10/29/1987 CONSERVATION COMMISSION Minutes

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Conservation Commission Page 12. October 29, 1987 COY F30G EXPERIMENT: Ms Lanshauser stated on the Order of Condit- ions to rehab the cranberry bogs , a condition was noted that 'at any point where chemicals were added to the bogs, that the waters be held for 48 hours. What has been done, in addition to the three retention ponds approved , they have . added four more ponds into. the system by -cul-. vetting in golf course ponds-. They then had an experiment by closing the flow gates at the lover and most northerly ends to see how long the water could be held , which was 48 hours. The most southerly retention ponds did not fill- up. There was a leak in the flume at the southeasterly retention pond. In order to fix that , they have stronSl suggested that instead of using individual planks., they use one . board with a rubber gasket . A letter was hand delivered to Lisa tonight with their conclusion that given the October floss, they will be able- to hold 48 hours of water in the experiment. They suggest it be repeated during spring flows. Ms Hanscom stated she was at the site twice and cannot say whether it worked 10% a s she did not know what the flow was due to leafage, Ms Behr an stated the commission would like -to look at it when there .is a solid board. Ms LanShauser stated there is a mon torl.n . r*o ra as-part of the MEPA process and the commission will be Zetting the results of that for the next seven years. Mr. Rosenberg stated the question of how far the treated chemicals are going is most importa tw Ms Langhaser• stated the engineer ►eels that given the facts the ponds did not fill' all the way up and if t- er were wa ert i ght conditions, it , would have worked and they do not .want -t repeat this e erineat again until June. Ms Behrman stated it cannot be said it is reasonably successful when they are going to change the structure. Ms Hanscom stated the main reason for the experiment was to show it could hold the mater and it didn' t. She would like to see it done in November . 1r. Brophy cane forward and apologized for missing the hearing. Ms ehr an advised as someone had been present at hearing time and spore, it will be necessary to readvertise at the applicant ' s expense another hearing. ached Lj JL ed for- 1 2787 2a t 7 = 4 5 � 3ME 3WF Ms eh-rman advised Mr . Brophy that a report from the Board of Health should be on record. Rhe- stated he has that .all okayed . Ms Behrman read a comment from the Board of Health stating records show no plan sm i ted as of October 2 .