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005 - \ " PAGGI & MARTIN Consulting Engineers & Land Surveyors CXJCO 54-56 Main Street Poughkeepsie, New York 12601 9 14-47 1- 7 898 RECEIVED August 20, 1991 AUG 21. 1991 ELAINE SNOWDEN TOWN CLERK Town Board Town of Wappinger P.O. Box 324 Wappingers Falls, New York 12590 Reference: Central Hudson Gas Line/Hilltop Wells Dear Board Members: At the request of Central Hudson, a meeting was held at the Town Hall, Monday, August 19, 1991, regarding the impact of the current Central Hudson Gas Line Construction on the Hilltop Wells. In attendance were Lawrence J. Steuer, Wayne Mancroni, and Patrick Bristol of Central Hudson; Craig DuBois of New York State Department of Environmental Conservation; Dare Fitzpatrick and Michael Tremper of Camo Pollution Control; Connie Smith, Supervisor, Town of Wappinger; and the undersigned. A history of the Project, the Town's involvement and comments were discussed. It has always been the Town's and this office's position that there exists the potential for impact of this construction on the well field at the Hilltop site. With that in mind, Central Hudson has proposed to the Town to construct the pipe line by the boring method rather than the open cut method. Utilizing this method minimizes impacts of the excavation and disturbance to the stream. For the record, the New York State Department of Environmental Conservation's representative was highly in favor of the boring method rather than the open cut method. I would think it would be the Town's position, and it is this office's and Camo Pollution Control's position, that the boring method is the preferred method over the open cut. Joseph E. Paggi,Jr., P.E. Ernst Martin, Jr., P.E., L.S. .. August 20, 1991 Page Two Town Board Town of Wappinger P.O. Box 324 Wappingers Falls, New York 12590 Reference: Central Hudson Gas LineiHilltop 'vVelis This method definitely minimizes the impact on the aquifer and lessens the chance of sedimentation of the creek. This method also minimizes the impact on the existing pipe lines in the area, one of which is highly critical to the operation of the system. We would like to point out at this time, that although this is a preferred method by the Town, there still ~ exist a chance that this operation could effect the formation. There will also be temporary impacts associated with the construction and operation of the boring pit and receiving pit. The boring pit would be located on the Fishkill side of the creek and the receiving pit would be located on the Wappinger's side of the creek, approximately 70 feet from the creek bank. We would ask that during the construction and operation in the boring pit, that the pumping operation to keep the boring pit dry only be done during working hours, and that the boring machine be removed during non- working hours. We would ask that the amount of working hours be kept to a minimum, and that the necessary amount of water to be removed to minimize the necessary man hours be utilized. With respect to removing water from the receiving pit, we would ask that the maximum amount of water pumping be limited to four (4) hours and that Central Hudson give the Town 48 hours notice prior to starting this operation. The amount of water to be taken during this four hour period should be maximized to minimize the time spent in this pit. For the record, the Town will also try to assist Central Hudson by changing their method of operation of the well field and utilize the pumps closest to the receiving pit to minimize the amount of ground water Central Hudson would have to pump to dewater the receiving pit. . August 20, 1991 Page Three Town Board Town of Wappinger P.O. Box 324 Wappingers Falls, New York 12590 Reference: Central Hudson Gas Line/Hilltop Wells Central Hudson has requested that some correspondence be sent from the Town to them stating that this method is a preferred method by the Town. Although I would recommend that the Town can and should write this letter, I would advise that the Town Board caution Central Hudson that the potential still does exist for this type of construction to impact the well formation. It was requested that this letter be sent to: Gary Thorne, Project Engineer Central Hudson Gas & Electric Corporation 284 South Avenue Poughkeepsie, New York 12601 Carbon copies should also be sent to Mr. Steuer and Mr. Bristol. If there are any questions or comments, please do not hesitate to contact me. Very truly yours, ~~ e P~i)..@ Joseph E. Paggi, Jr., P.E. JEP:law cc: Mike Tremper, Camo Pollution Control Dare Fitzpatrick, Camo Pollution Control Pat Bristol, Central Hudson Larry Steuer, Central Hudson 91-003(17) I ~' .\ j {,~ /