3/27/2014 CONSERVATION COMMISSION Minutes

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Mr. Burns said the presence of a waterline that goes from South cape Beach Estates to an easement in close proximity to the proposal poses a potential problem. The enact location and depth of the waterline is unknown, but he will take great care to avoid it. The Agent read the following letter from Andrew Marks, operations Manager of the Mashpee Water District addressed to the project Engineer: "At your request, please consider this letter the opinion of the Mashpee Water District regarding the proposed dock at 327 Monomoscoy Island Road. As you know, there is ars HDPE water rain under the property that continues under the river and over the mainland. Unfortunately, it is impossible to know the exact location of the water main. If the water main is damaged, it would be impossible to repair. As discussed, I believe with great care and proper methods damaging the water main can be avoided. I feel confident if you are able to work with the contractor installing the dock and they follow your advice the dock can be installed without any problems." Following up on this letter, the Agent learned from Mr. Marks in the event the water main i damaged, that water to Monomoscoy Island would have to be shut off and the replacement pipe could cost from .5 million to 1 million dollars. The Agent said -that the design of the dock meets the performance standards for the resource areas. He said that there should be restriction on the size and location of the boat. He suggested a demonstration of the jet washing on a similar material pipe showing that it won't damage the pipe by using that methodology in the field, contacting Dig Safe and posting insurance to corer any damages that may occur daring installation of the dock and pier. If the Board approves the project, the Agent said that conditions can be included in the order of Conditions to ensure safe construction, such as hiring of outside consultants underM.G.L. chapter 44 Section 53G to monitor the project; that the Conservation Department will work closely with the Building Department; that the project is contingent upon Building approval, and than all rea onable steps will be taken to avoid damaging the water line. He said that he would ask for the Commissioner's input after compiling a list of Conditions. The Agent also recommended seeking Town counsel advice. If the Board denies the project, the Decision could be based on lack of sufficient information (lack of specific locale of the water pipe . Nor. Anderson said than this is the owner's project and that it is the responsibility of the Building Department to-ensure safe construction. Mr. McKay expressed concern with disturbance to the bottom and the potential for damage to-the environment. Mr. Burtis said that some of the sediment has to be displaced. The Agent said that there are exemptions in the local wetland bylaw and State Wetlands Act when public utilities are involved. Shellfish Constable Fick York said that the float is in shallow water and he would require that boats be restricted to docking on the south side of the dock and that daft shall be limited on the north side to less than two feet of draft. Lotion. Robert Anderson made a motion to close and issue, contingent upon obtaining Town Counsel opinion and assurance from the Building Department that this project can proceed safely, seconded by Mr. Sweet. Motes. -2. Motion passed. i