Site work for a water / sewer project in Barrington, New Hampshire. Completed plans call for site work for a water / sewer project.

This project is located on Mendums Pond in Rockingham County, New Hampshire, and is being performed for the New Hampshire Department of Environmental Services ("Owner/Engineer"). The intent of the project is to rehabilitate the existing dam to meet current dam safety regulations and includes: 1. Phased construction and phased diversion of water, including installation and removal of temporary cofferdams, temporary bypass piping, and temporary pumped diversion facilities. 2. Select demolition of existing outlet works features. 3. Extension of the existing outlet works conduit and construction of the new concrete impact basin at the downstream end of the conduit. 4. Construction of concrete seepage collection well and HDPE drain pipes. 5. Construction of riprap outlet channel downstream of the concrete impact basin. 6. Construction of downstream earth buttresses for the left and right dam embankment sections, including installation of toe drains, weir boxes, coarse drainfill, fine drainfill, and medium drainfill. 7. Installation of a new stop log and trash rack guide at the intake structure. 8. Instrumentation for weir boxes and existing piezometers. 9. Modifications to the existing toe drain. Each bid must be accompanied by a cashier's check, certified check, or a bid bond in the amount of five percent (5%) of the bid amount. The successful bidder will be required to provide Performance and Payment Bonds in the amount of one hundred percent (100%) of the contract price payable to Treasurer-State of New Hampshire. No Bidder may withdraw a Bid within 90 days after the actual date of opening thereof. The Project shall be substantially completed no later than April 30th, 2026. Project shall be complete no later than May 14th, 2026. All questions about the meaning or intent of the Bidding Documents are to be submitted to Resident Project Representative in writing via email (efromherz@GFNET.com) with a copy sent to the Owner/Engineer via email (charles.s.krautmann@des.nh.gov). NHDES reserves the right to waive irregularities and to reject any or all bids. Pre Bid Meeting Description: The pre-Bid conference will take place at the dam which has an entrance along NH Route 4 which is approximately 0.6 miles west of McDaniel/Hall Road and approximately 0.3 miles east of Mendum's Landing Road. The gate to the entrance of the access road will be open, proceed approximately 0.35 miles north on the dirt road until the dam comes into view.