NHSA H-5 newsletter header

October 19, 2015, Volume XV

Construction update

During the week of October 11th, the contractor placed the concrete top slab for the control vault and continued the excavation of the pump station. Excavation for the pump station is down to approximately the halfway point. As previously reported in the newsletter (September 18, 2015, Volume XI), the completion of the control vault foundation during the week of September 14th sealed off any contaminated soils at that location. This past week, the contractor continued the excavation of the pump station and revisions to the traffic control signs occurred. Air monitoring of the site, as directed by the Licensed Site Remediation Professional (LSRP), began on August 27th and continues.

 

As shown 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. As indicated above, the contractor has completed the concrete for the control vault and continues the excavation for the pump station. The contractor is waiting for PSE&G approvals to continue preparatory work for the installation of the emergency generator at the NHSA island between Hudson and Washington Streets.
At the request of the HPD, NHSA this week directed the contractor to revise the traffic control signs to be less confusing and to increase traffic safety during the construction. There was no vibration monitoring for the pump station sheeting installation, as the engineer determined that the sheeting was conducted from a sufficient distance from the buildings. Vibration monitoring was in place during sheeting for the control vault where no issues surfaced. There will be additional sheeting in two locations going forward. At this point, we remain uncertain of the timing for this activity. For this anticipated sheeting, the contractor will have monitoring for vibration in place.

 

As of October 11th, a number of submittals have been approved or are close to approval. These are:

  • Electrical equipment
  • Valves for the mechanical process piping
  • Reinforcing steel for the pump station foundation
  • Storm drain relocation
  • Force main relocation
  • Dust control plan
  • Process piping for pumping equipment
  • Reinforcing steel for transition vault
  • Reinforcing steel for pump station
  • Electrical wiring and grounding
  • Soil sampling plan for pump station
  • Waterproofing
  • Dewatering plan
  • Emergency generator

Coming up

In the next two (2) weeks, the contractor will continue to prepare submittals and obtain approvals for construction activities. Going forward into the week of October 19th, these activities will include:

  • The contractor will begin finishing the concrete for the control vault and plan for the installation of equipment within the control vault.
  • The contractor will continue to install walers, which support the sheet piles, as excavation for the pump station continues.
  • 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 LSRP air monitoring program continues in place.

The following new submittals are being reviewed by NHSA engineers:

  • Reinforcing steel for concrete placements
  • Electrical submittals
  • Process piping
  • Process valves and operators
  • Sump pumps
  • Submersible wet weather pumps
  • Bollards

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, now underway: 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.
  • 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: Brief intervals of closure between Sinatra Drive North and Hudson Street.

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.