HomeMy WebLinkAbout07 - Construction Mitigation DescriptionConstruction Mitigation Description Highlands Reservoir and Emergency Generator Replacement City of Renton Drinking Water Utility Proposed Construction Dates and Times Part 1, Replace Emergency Generator Anticipated construction dates: Start 1 May 2016 and end 31 December 2016 Working hours: see below Part 2, Construct replacement reservoir, on-site and offsite utilities and street frontage improvements Anticipated construction dates: Start 1 May 2017 and end 31 December 2018 Working hours: see below Working hours:
Typically the working hours will be between 7:00 a.m. and 6:00 p.m., Monday through Friday.
Exceptions to this may occur in order to minimize disruptions to local traffic. In those cases the
scheduling will be handled as per the City of Renton standard specifications which are as follows:
Except in the case of emergency or unless otherwise approved by the Contracting Agency, the normal
straight time working hours for the Contract shall be any consecutive 8-hour period between 7:00 a.m.
and 6:00 p.m. of a working day with a maximum 1-hour lunch break and a 5-day Work week. The normal
straight time 8-hour working period for the Contract shall be established at the preconstruction
conference or prior to the Contractor commencing the Work.
If a Contractor desires to perform Work on holidays, Saturdays, Sundays, or before 7:00 a.m. or after
6:00 p.m. on any day, the Contractor shall apply in writing to the Engineer for permission to Work such
times. Permission to Work longer than an 8-hour period between 7:00 a.m. an 6:00 p.m. is not required.
Such requests shall be submitted to the Engineer no later than noon on the working day prior to the day
for which the Contractor is requesting permission to Work.
Permission to Work between the hours of 10:00 p.m. and 7:00 a.m. during weekdays and between the
hours of 10:00 p.m. and 7:00 a.m. on weekends or holidays may also be subject to noise control
requirements. Approval to continue Work during these hours may be revoked at any time the
Contractor exceeds the Contracting Agency’s noise control regulations or complaints are received from
the public or adjoining property owners regarding the noise from the Contractor’s operations. The
Contractor shall have no claim for damages or delays should such permission be revoked for these
reasons.
Permission to Work Saturdays, Sundays, holidays or other than the agreed upon normal straight time
working hours Monday through Friday may be given subject to certain other conditions set forth by the
Contracting Agency or the Engineer. These conditions may include but are not limited to: requiring the
Engineer or such assistants as the Engineer may deem necessary to be present during the Work;
requiring the Contractor to reimburse the Contracting Agency for the cost of engineering salaries paid
Contracting Agency employees who worked during such times; considering the Work performed on
Saturdays, Sundays, and holidays as working days with regards to the Contract Time; and considering
multiple Work shifts as multiple working days with respect to Contract Time even though the multiple
shifts occur in a single 24-hour period. Assistants may include, but are not limited to, survey crews;
personnel from the material testing labs; inspectors; and other Contracting Agency employees when in
the opinion of the Engineer such Work necessitates their presence.
Construction Mitigation Measures & Best Practices:
All activities will begin with the implementation and installation of Best Management Practices
(BMP). These practices include:
Proposed Hauling/ Transportation routes Contractors will apply for their own hauling
permits related to this project and will follow a city approved route. It is anticipated that the haul route
will be from the reservoir site west along NE 12th to NE Sunset Blvd and then south and west to I-405.
Storm Water Construction will start with the implementation and installation of Best
Management Practices (BMP) for Temporary Erosion and Sedimentation Control (TESC). All storm water
drain inlets in and around the proposed construction operations and staging areas will be surrounded by
oil absorbent padding to mitigate the potential of any hydraulic/fuel leakages emanating from
construction machinery entering the watershed.
Dust Control Through the entire construction period the Contractor shall take all necessary steps to
dust control all working area and unpaved roads. The use of calcium chloride or other chemicals will not
be permitted for dust control. The Contractor will accomplish dust control by watering and sprinkling to
satisfactorily settle the dust. Contractor shall comply with any requirements imposed by law to prevent
fugitive dust emissions. All demolished materials and debris will be stockpiled on site to prevent dust
and sedimentation from migrating onto roadways. Contractor vehicles that are transporting materials
to and from the site will be required to have tires washed prior to leaving the site. This will prevent dust
and sedimentation from entering nearby roadways.
Special Hours of Operation None proposed at this time.
Preliminary Traffic Control Plan None proposed at this time. Part 1 will not need a traffic
control plan. Part 2 will need (a) traffic control plan (s) for the work in the right-of-way. The contractor
(s) will be responsible for submitting, getting approval of and implementing traffic control plans.