NHSA H-5 newsletter header

June 14, 2016 Volume XXVIII

Construction update

The contractor has been working in several areas concurrently and has completed the following activities:

  • Pump station. The contractor is preparing for the installation of the gravity piping for the pump station completion. The 4-inch sump pump discharge piping within the pump station was completed and the electrical conduit ductbank for the main submersible pumps, sump pump, and mechanical floats was installed.
  • Transition vault. The contractor completed the closure collars on the 36-inch twin pump station force mains and installed the check valves and piping into the top of the CSO structure. This will be the location of the wet weather pumped discharge once the pump station is completed. The 72-inch tideflex valve was received and is ready to be installed once the CSO connection is prepared. The contractor is continuing to excavate the transition vault area. (See previous newsletters for diagram and explanation of the transition vault.)
  • Control vault. The contractor continues pulling/terminating wire in the control vault. The switchgear, variable frequency drives (which control the speed of the pumps), small transformer inside the vault, automatic transfer switch (the switch allows power transfer to emergency generator during a power outage), main control panel, sump pump control panel, and circuit breaker panel within the structure have all been completed.
  • Site. The electrical ductbanks for the primary/secondary electrical work continues.

As discussed in the last several newsletters, due to the proximity of the transition vault to the 1125 Maxwell Place building, the contractor will need to temporarily close down the exterior sidewalk to pedestrians for public safety. Only the exterior sidewalk will be affected, and it will be put back into service as soon as possible. (See “Sidewalk and Auto Access” sidebar and previous newsletters for details.)

 

The contractor completed installing the emergency generator on NHSA’s 11th Street Island west of Hudson Street and continues to work on the electrical ductbanks from the main transformer. As mentioned previously, work is nearing completion on the connection chamber and is well underway on the transition vault. At the control vault location, the contractor is installing the mechanical and electrical equipment inside the vault, and previously installed the two (2) condenser units on top of the concrete pad and the refrigerant piping between the condenser units and the air handling units.

 

As illustrated in previous newsletters, the project’s three (3) phases are dictated by the engineering and construction requirements and will occur in three areas along 11th Street, as seen in the figure below. The three phases are: 1) the construction of the wet weather pump station; 2) the construction of the control vault; and 3) the installation of the emergency generator.

Construction map

(Click image above for a larger view)


Latest construction activity

During the week, construction submittals from the contractor continue to be reviewed and processed by NHSA engineers. The contractor continues work on the pump station, control vault and transition vault and has completed installation of the emergency generator at the NHSA island between Hudson and Washington Streets. The following is a summary of the construction submittals processed to date:

  • Construction submittals received: 184
  • Construction submittals reviewed: 184
  • Construction submittals approved: 180
  • Submittals not subject to review (for information only): 11

The following construction submittals were reviewed the week of June 8th, 2016.

  • H5-OM-16236-001-00 (Emergency generator)
  • H5-OM-16412-001-00 (ATS)
  • H5-OM-13401-002-00 (CP-H5-100 sump pump control panel)
  • H5-OM-11270-001-00 (Flow monitoring MH – Mission Communication System)
The photographs depict the latest construction activity at the transition vault.

Control vault twin check valves

Transition vault – Depicts the twin 36-inch check valves and force mains into the top of the CSO structure
(Click image above for a larger view)


Coming up

In the next two (2) weeks, the contractor will continue to prepare submittals and obtain approvals for construction activities. During the week of June 13th, these activities will include:

  • Transition vault – Continue the construction of the concrete walls and the installation of the tideflex valve.
  • Pump station – Prepare for installation of the main pumps.
  • Control vault – Complete secondary wiring and control wiring in the vault.
  • Site – Continue the electrical ductbank installation and the center island work for the main transformer to the west of the Authority’s 11th Street Pump Station.
  • The contractor will continue the installation of the transformer and electrical service.
  • The contractor will continue to have a water truck available to abate dust and soil an erosion controls to prevent the migration of dust from the construction area.
  • The landscape architect will begin to meet with NHSA and representatives of the HOA to initiate planning for the restoration of the Maxwell island.
  • The Licensed Site Remediation Professional (LSRP) air monitoring program continues in place.

LSPR update

The LSRP’s recent activities include:

  • Air monitoring of the site began on Thursday, August 27th and continues, in accordance with the LSRP-approved plan.
  • The air monitoring readings are continuing. Daily updates are being sent to the HOA and the weekly updates are being posted on the NHSA website.

Overall construction schedule

The current overall construction schedule remains as follows:

  • Pre-construction activities: Completed as scheduled.
  • Construction activities: Mid-August through December. This includes work on the installation of control vault and pump station. The emergency generator on North Hudson’s existing 11th Street pump station island between Hudson and Washington Streets will also be constructed once the transformer and generator are procured.
  • LSRP monitoring begins with construction and ends when the cap is restored.
  • Control vault construction continues until April 2016. Control vault electrical continues through June 2016.
  • Pump station construction continues until August 2016.
  • Final completion and site restoration is scheduled for October 2016.

Role of the LSRP

The LSRP serves an extremely important function in the construction of the H-5 WWPS. He will oversee all environmental issues on the site, including the voluntary air monitoring that North Hudson is undertaking. In this capacity, the LSRP is responsible to the NJDEP for ensuring that all construction is done in accordance with the Remedial Action Plan filed with the State during the original development of Maxwell Place. The contractors will take no steps that impact the environment without the strict oversight of the LSRP. The LSRP will report on a regular basis to the NJDEP.

 

Because Maxwell Place was constructed on land that was remediated for soil and groundwater contamination, an NJDEP-approved engineered cap was placed within the development and along 11th Street. The construction of the WWPS will lift minimal parts of the cap in carefully defined areas, and the LSRP will develop a Data Collection Plan to strictly supervise and control all related construction activities. No construction that impacts the existing cap can be undertaken without the approval of the LSRP.

 

The LSRP will also supervise the gathering of air samples adjacent to the construction, as part of North Hudson’s voluntary air monitoring program. The LSRP will oversee the air quality data collection and provide advice before construction begins, during excavation and until the cap is replaced.

 

The recent air monitoring data can be found on the NHSA website.

auto and pedestrian

Sidewalk and auto access

This is the most current information and will be updated going forward.

 

Sidewalks

South sidewalk on 11th Street: Open at all times.

East sidewalk on Sinatra Drive North: Maintain drop-offs for school.

North Sidewalk on 11th Street: During the month of May there will be two more temporary closures of the exterior sidewalk during business hours from 8:00 a.m. till 4:30 p.m. between Sinatra Drive North and Hudson Street. There is an additional closure to remove the temporary steel sheeting with a date to be determined. The work is weather dependent, and we will give updates to the HOA as work progresses and if anything changes.

There will be an additional sidewalk closure to restore the sidewalk at a date to be determined. The HOA will be notified prior to the closures.

East and west sidewalk at Maxwell Lane: Maintain access for drop-offs to daycare.

 

Traffic

 

Uninterrupted access to parking garage.

Eastbound traffic lanes 11th Street: Short temporary closures during utility relocation; both lanes closed during pump station construction between Maxwell Lane and Sinatra Drive North. Open at all times from Maxwell Street to Hudson Street.

Westbound traffic lanes 11th Street: Temporary closures for traffic relocation between Maxwell Lane and Hudson Street. Both lanes closed during pump station construction from Maxwell Lane to Sinatra Drive North.

 

Parking

 

No street parking during construction hours between Maxwell Lane and Hudson Street.

No street parking on 11th Street from Hudson Street to Sinatra Drive North (Eastbound).

 

Effect on local businesses

 

Sidewalk access permits unimpeded foot traffic to local businesses.

Traffic controls at site will minimize business impact.

Drop-off point will be maintained during construction.

Parking access may have
limited effect.

Parking garage access remains in place.

Restrictions on street parking will be impacted during construction.

 

auto and pedestrian

Air monitoring

Although the NJDEP does not require air monitoring for the H-5 WWPS project, North Hudson is voluntarily monitoring the air surrounding the construction site for dust and volatile organic compounds (VOCs). The LSRP will continuously monitor the air during excavation activities and until the original cap has been replaced. This is a relatively conservative approach, as it is designed to alert the construction team whenever dust is in excess of the LSRP monitoring plan. Readings that show elevated levels of dust or VOCs in the air will result in review and remedial action to abate the condition as approved by the LSRP. Our e-newsletter will provide regular summaries of the air monitoring activities, and the website (nhudsonsa.com) will post daily readings.

Telephone

Contact us

You can contact us 24/7 at our dedicated number: 866.689.3970. The Resident Engineer, who is overseeing the construction, will normally be on site during construction hours, Monday through Friday, 8:00 a.m to 4:30 p.m.