New Well Siting: 1. Determine the siting of the new well. It is preferred that the new monitoring well be within a 20-foot radius of the existing SH-4 monitoring location. Moving the monitoring location outside of this radius may need additional approval by NHDES’ Groundwater Permits Coordinator. Such approvals, if necessary, shall be the responsibility of the contractor. 2. This work will need a Permit by Notification in accordance with Env-Wq 1406.05 (b). The contractor conducting the drilling shall provide the NHDES Shoreline Permitting Section, the Upper Merrimack Monitoring Program, the City of Franklin (property owner), and the farmer leasing the City of Franklin parcel with written notification of the general location and the type of work to be conducted at least 14 days prior to its commencement. 3. Since the location of this radius is located on a wood line of an active cornfield, vegetation removal may be necessary. The contractor shall work with the WRBP to determine the best location to install the new well. The WRBP can remove shrubbery while the contractor and/or their subcontractor shall be responsible for the removal of any trees over 6” diameter-at-breast height, as necessary. New Well Construction and Development: 1. The well shall be constructed using a 2-inch O.D. flush jointed polyvinyl chloride (PVC) well materials machine-slotted [0.010-inch] well screen and solid riser pipe. 2. PVC casing should not be driven but slid into the drill hole. Steel casing may be driven, but a drive shoe should be used when driving it into the ground. 3. The depth of SH-4 is roughly 32-34 feet deep. The new well shall be constructed approximately 40 feet deep, if conditions allow. No well less than 34 feet shall be accepted.
