Richmond Street Sewer & Water Upgrade

2026-11-03

The City of Dover , New Hampshire is requesting proposals to provide construction labor , equipment , and supervision to complete sewer and water upgrades on Richmond Street . Scope of Work : 1 .) Install new SDR35 PVC sewer main piping as required . 2 .) Install new SDR 35 PVC sewer services as required , from new main to ROW . 3 .) Install new sewer manholes as required . 4 .) Furnish and install required benching for new sewer manholes . 5 .) Complete testing on all new sewer manholes and sewer mains as noted in Attachment E . 6 .) Replace all water service lines from the existing corporation valves to a new curb stop . 7 .) Install new water main , gate valves , thrust blocks and all other necessary components to provide a complete system as shown in Attachment C . 8 .) New water main to pressure tested and disinfected per Attachment E Permitting , Licensing , and Construction Guidance and Standards . 9 .) Contractor to install temporary water system per Attachment F Temporary Water Plan , to be put into service prior to disruption to the existing permanent water service . 10 .) Provide trucking , excavation , labor and compaction as required . Compaction testing on trench fill to be supplied by City of Dover . 11 .) Perform trench paving with base course mix in areas where existing asphalt is disturbed . 12 .) Perform Coring / infill connection to existing structures to remain , as required . 13 .) Reset any curbing and reconstruct any sidewalks impacted by this work . 14 .) Remove and dispose of any material noted for removal in Attachment C , including excess soil . 15 .) Install flowable fill for any sewer piping that is not removed and is abandoned in place . 16 .) Furnish and install brick and mortar as necessary to set city furnished cover and frame to grade . 17 .) Remove and restore any fencing as needed that is disturbed as a result of the project . 18 .) Adequately support and maintain all utilities , including underground electrical utilities in the construction area . 19 .) Setup and maintain a temporary sewer bypass as needed to facilitate installation of new main . 18 .) Setup and maintain necessary erosion controls . 20 .) Setup and maintain all required construction signage per the city provided traffic control plan , signage to be provided by the city . 21 .) Provide oversight of city supplied flagging crew . Additional Contractor Responsibilities : • Dewatering as needed . • Compliance with Attachment D – The City of Dover ’ s Standard Details . • Compliance with Attachment E – The City of Dover ’ s Permitting , Licensing , and Construction Guidance and Standards . • As - Built GIS data submission upon completion . • Obtain Dig Safe clearance prior to excavating . • Ensure all handling of existing asbestos material is in accordance with all federal , state and local regulations . • Furnish all temporary water pipe and fittings as required . • Complete required pressure testing and disinfecting of the water system per Attachment C . • Assist in coordination with gas utility company as required .

New Hampshire

2026-04-28