> Methods proposed for maintaining flow in sewer mains and
service connections shall be described in detail, and shall
have been proven by successful use in similar past projects.
> The trench shall be plated after work hours, and the work
area shall be open to traffic.
7. Add the following Item to the SUPPLEMENTARY CONDITIONS:
W. AVOIDING PIPE AND CATCH BASIN CONFLICTS WITH
EXISTING UTILITIES
The Contractor shall excavate the trench for catch basins and
associated pipe laterals in advance of laying pipe in order to
determine whether any utility interferes with the proposed
alignment of pipelines and/or location of catch basins. Any
adjustments required to avoid utility conflicts shall be approved by
the Engineer prior to installation. The Contractor shall have on
hand several different 4’ diameter barrel sections for possible
adjustment to catch basin depth.
8. A question arose at the pre-bid meeting regarding hours of operation?
Answer: Add the following paragraph to Item C, SUPPLEMENTARY
CONDITIONS:
C. WORK HOURS
Bridge Street at C Street:
Working hours are from 9 am to 3 pm, with approved one lane
alternating traffic plan and/or detour in one direction. Any closures
of road will require work to be done during night hours.
Central Street at Ash Street:
Working hours are from 7 am to 5 pm, with an approved plan
having at a minimum one lane open in both directions.
Charles Street:
Working hours are from 8 am to 5 pm, with approved traffic
plan. An approved detour plan is required if closing street.
Note: The City reserves the right to stop work should traffic
controls prove to be inadequate. Should a problem arise as a result
of the approved traffic control plan, additional traffic control
measures may be required at the contractor’s expense.
2019 Sewer Replacement Project Addendum #1
Nashua, NH Page 4
