NHSA H-5 newsletter header

September 15, 2016 Volume XXXI

Construction update

Work continues to progress on schedule. With the approval of the HOA, in accordance with the construction hours schedule (below), the contractor will be on site on Saturday, September 17th. Work will begin at 9:00 a.m. and end at 3:30 p.m. The site will be locked up by 4:00 p.m.

 

The contractor has completed the base slab, which has sealed off the existing soils, and the concrete walls of the transition (Tideflex) valve chamber. With the completion of the base slab work, air monitoring at the site will end, and the equipment will be demobilized on September 16th and 17th. The Licensed Site Remediation Professional (LSRP) will continue to oversee the restoration of the site. This includes the milling of the asphalt and final paving as soon as the Tideflex valve chamber sheeting is removed.


Construction hours

As we move into the final weeks of construction, the contractor has requested extended hours on site to be certain that the project finishes on time by mid- to late-October. The HOA reviewed the request and agreed to the following schedule going forward:

  • Monday to Friday construction hours extended to 6:00 p.m., with lock-up at 6:30 p.m. 

  • Saturdays, September 17th and 24th, and October 1st will be held as additional back-up work days (the same Saturday hours) as needed to stay on schedule.


Recent construction activities

The following are recent activities at the site:

  • Site—PSE&G powered the new transformer located at the 11th Street pump station, which allows the pumps and control vault equipment to be tested.

  • Pump station—The contractor has partially completed the wet tests of the new pumps. We are awaiting more wet weather to complete the performance testing. Because Hermine-induced rain did not materialize over the Labor Day weekend, the expected wet weather testing could not be completed.

  • Transition vault—The contractor completed the base slab concrete and the cast-in-place concrete walls of the below grade chamber. Once the mechanical piping is completed the Tideflex valve can be installed, the top slab placed, and the sheeting can be removed. (See previous newsletters for diagram and explanation of the transition vault area.)

  • Control vault—The contractor energized the control vault and tested the equipment and the functionality of the controls. 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 tested and are functional.

  • Emergency generator—The contractor completed the installation of the emergency generator on NHSA’s 11th Street island west of Hudson Street and will test the generator now that the new pumps are energized.

  • Restoration/landscape planning—The combined NHSA-Maxwell HOA working group met for the first time on August 3rd to begin planning for the restoration of the Maxwell islands. A preliminary plan was discussed and HOA representatives’ feedback was incorporated. A second iteration of the plan has been drafted and submitted to the HOA representatives. A follow-up meeting of the working group will be scheduled in the next few days. The landscape architect chosen by NHSA, Melillo + Bauer Associates, is the same one that originally designed the landscapes for the Maxwell development.

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 to 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: 227

  • Construction submittals reviewed: 227

  • Construction submittals approved: 216

  • Submittals not subject to review (for information only): 11

The following construction submittals were reviewed the week of September 15th, 2016.

  • None

The photograph depicts the latest construction activity.


Transition vault concrete walls

New transition vault concrete walls (Tideflex
valve chamber). base slab is placed below
the walls and seals all soils below.


Coming up

In the next three (3) weeks, the contractor will complete the Tideflex valve chamber and await wet weather for performance testing of the pumps. Site restoration will begin shortly thereafter. Going forward into the week of September 19th, the following activities will be underway:

  • Transition vault—Continue the preparation for the construction of the concrete walls and the installation of the Tideflex valve.

  • Pump station—Performance test the main pumps.

  • Control vault—Complete punch list for equipment and controls.

  • Site—Begin planning for surface restoration and landscaping.

  • 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 meet with NHSA and representatives of the HOA to finalize planning for the restoration of the Maxwell island.

  • The sheeting will be removed and the site restoration activities will begin.


LSPR update

The LSRP’s recent activities include:

  • Air monitoring of the site began on Thursday, August 27th 2015 and continues, in accordance with the LSRP-approved plan.

  • The program is being discontinued as of September 16th, 2016.

  • The LSRP will continue to oversee restoration of the site.


Overall construction schedule

The current overall construction schedule remains as follows:

  • Pre-construction activities—–Completed as scheduled.

  • Construction activities—–Mid-August 2015 through December 2015. 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 through April 2016. Control vault electrical continues through June 2016. Functional testing in August 2016.

  • Pump station testing continues through August 2016. Functional testing continues until early September. Transition vault construction continues following functional testing.

  • 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: As described in a previous newsletter there is a closure during working hours 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.