130 liberty street deconstruction project public information session on draft phase i deconstruction...

130 Liberty Street Deconstruction 130 Liberty Street Deconstruction ProjectProject

Public Information Session on Draft Phase I Deconstruction Plan

St. John’s University

January 24, 2005

AgendaAgenda

• Introduction

• Consultants and Contractors

• Presentations– Overview – Supplemental Testing– Deconstruction Plans– Proposed Enhanced Air Monitoring Program

• Comments

Key PartiesKey Parties

Consultants/Contractors

Gilbane – Deconstruction ContractorLVI – Asbestos/Cleaning SubcontractorWeston – Environmental Monitoring SubcontractorCDI – Deconstruction Subcontractor

• TRC – Environmental Consultant and Exterior Air Monitoring• URS Corporation, Owner’s On-Site Representative• Ecology and Environment, Inc. – Public Outreach

Consultant• Kroll Associates – Integrity Monitor

Regulators

• US Environmental Protection Agency

• US Occupational Safety & Health Administration

• NYS Department of Environmental Conservation

• NYS Department of Labor

• NYS Department of Health

• NYC Department of Environmental Protection

• NYC Department of Buildings

• NYC Department of Sanitation

• NYC Department of Health

Key Parties, cont.Key Parties, cont.

Summary of Findings in Initial Characterization

• The results of the sampling and testing revealed levels of contaminants that should be addressed in the deconstruction of the building.

• Throughout the building, asbestos containing materials (ACM) were positively identified.

• Detectable levels of asbestos, silica, PAHs, dioxins, PCBs, and heavy metals (including mercury) were also identified in dust above and below the suspended ceilings.

• The results are consistent with the highly variable nature of WTC dust and the level of activity that has occurred within the building since September 11th.

• Supplemental Testing

• Development of the Deconstruction Plan

• Permitting and Notification Plan

Preparation for DeconstructionPreparation for Deconstruction

Supplemental TestingSupplemental Testing

Additional testing is being conducted in previously inaccessiblesurfaces and interstitial spaces including:

• The curtain wall, interior walls, the exterior of the building, HVAC ductwork, vertical shafts, cell systems/raceways within the concrete slabs, and fireproofing;

• Testing for COPC’s addressed in the initial characterization study which includes asbestos and other COPC analytes

• Visual inspection for asbestos-containing building materials and mold;

• Preliminary waste characterization;

• These results continue to inform the Phase I Deconstruction Plan and will form the basis of the Phase II Deconstruction Plan.

Supplemental TestingSupplemental Testing

Additional testing is being conducted in previously inaccessiblesurfaces and interstitial spaces including:

• Results compared to the Initial Building Characterization Report; the United States Environmental Protection Agency (USEPA) World Trade Center (WTC) Indoor Environment Assessment: Selecting Contaminants of Potential Concern (COPC) and setting Health-Based Benchmarks; and previous environmental studies in the building.

• While the USEPA residential benchmarks related to residential settings and are not directly applicable to a commercial deconstruction project, these studies can be used to put the results of this supplemental investigation into relative context;

• The SI results and others as they are finalized will be available on the LMDC website at www.renewnyc.com.

Supplemental Testing - ResultsSupplemental Testing - Results

Building Exterior Surface Sampling Results:

• Asbestos Average Concentration - 105,245 str/cm2

- Range <1,580 to 731,000

• Lead Average Concentration – 92 ug/ft2

- Range < 19 to 390

• Dioxins Average Concentration – 1.46 ng/m2

- Range 0.848 to 1.93

• PAH Average Concentration – all < 57.78 ug/m2

• Silica Average Concentration – 18.30 mg/ft2

- Range 1.6 to 36

• MMVF Average Concentration – 38.18 str/cm2

- Range 6.21 to 198.7

.


Building Exterior Surface Sampling Results:

• Average concentrations on the exterior are generally lower than the concentrations identified in the Initial Building Characterization Report.

• Average Asbestos, Lead and Silica concentrations were found to be above USEPA Tier I – Residential Health-Based Benchmarks


HVAC Distribution Ductwork Surface Sampling Results:

• Asbestos Average Concentration - 1,188,236 str/cm2

- Range <15,600 to 4,730,000


- Range 140 to 1300

• Average asbestos and lead concentrations in the interior of the HVAC ductwork are generally consistent with the concentrations identified in the Initial Building Characterization Report and above USEPA Benchmarks.


Vertical Shaft Surface Sampling Results:

• Asbestos Average Concentration – 37,374 str/cm2

- Range <6,820 to 134,000


- Range < 10 to 340

• Average asbestos and lead concentrations in the interior of the Vertical Shafts are above the USEPA WTC Benchmark values and generally lower than the concentrations identified in the Initial Building Characterization Report.


Building Cell System Surface Sampling Results:


- Range < 2,390 to 593,000

• Lead Average Concentration – 3,171 ug/ft2

- Range < 16 to 18,226


- Range 0.75 to 4.84

• PAH Average Concentration – all </= 40.44 ug/m2

• Silica - Not Sampled – concrete constituent• MMVF Average Concentration – 1173 str/cm2

- Range 847 to 1476

.


Building Cell System Surface Sampling Results:

• Average concentrations in the cell system are generally lower than the concentrations identified in the Initial Building Characterization Report.

• Average concentrations of Asbestos and Lead were found to be above USEPA Tier I – Residential Health-Based Benchmarks


Curtain Wall Cavity Surface Sampling Results:


- Range <6,250 to 55,900


- Range 10 to 220


- Range 1.29 to 17.8

• PAH Average Concentration – 74 ug/m2

• Silica Average Concentration – 7,400 mg/ft2

- Range 5,100 to 11,600

• MMVF Average Concentration – Approx 10% due to significant presence of fireproofing.


Curtain Wall Cavity Surface Sampling Results:

• Average concentrations in the Curtain Wall Cavity are generally lower than the concentrations identified in the Initial Building Characterization Report.

• Average concentrations of Lead and Silica were found to be above USEPA Tier I – Residential Health-Based Benchmarks


Interior Wall Interstitial Space Surface Sampling Results:

• Asbestos Average Concentration – all < 6,250 str/cm2


- Range <10 to 24


- Range 0.84 to 1.89

• PAH Average Concentration – all < 57.78 ug/m2

• Silica Average Concentration – 0.55 mg/ft2

- Range 0.055 to 2.42

• MMVF Average Concentration – 142.19 str/cm2

- Range 15.17 to 641.3


Interior Wall Interstitial Space Surface Sampling Results:

• Average concentrations in the Interior Wall Interstitial Space are generally lower than the concentrations identified in the Initial Building Characterization Report.

• Only the average concentration of Silica was found to be above USEPA Tier I – Residential Health-Based Benchmarks (Background).


Fireproofing Surface Sampling Results:

• Asbestos Average Concentration - 75,073 str/cm2

- Range <2,990 to 2,750,000


- Range < 4 to 100


- Range 13.5 to 436

• PAH Average Concentration – 90 ug/m2

- Range 80.26 to 122.48

• Silica Average Concentration – 19,670 mg/ft2

- Range 5,100 to 37,540

• MMVF Average Concentration – Approx 10%.


Fireproofing Surface Sampling Results:

• Average concentrations on the fireproofing are generally lower than the concentrations identified in the Initial Building Characterization Report.

• Average concentrations of Asbestos and Silica were found to be above USEPA Tier I – Residential Health-Based Benchmarks.


Waste Characterization Sampling:

• Sampling and analysis of dust/debris and limited anticipated waste streams for waste characterization

• Full TCLP Analysis• RCRA Characteristics of Ignitability, Reactivity and

Corrosivity. • Only one dust sample found to exceed TCLP concentration –

Cadmium found at 6.2 mg/l versus 5 mg/l standard.


Asbestos-Containing Building Material Survey

Additional ACM Materials found include:• 10,690 SF of Floor Tile in Cellar B• 6,050 SF of Brown Caulking Sealant inside each perimeter

induction unit (floors 7-34)• 200 LF of Pipe Insulation inside vertical shaft

Principles of Deconstruction Plan

• Protective of the health and safety of the workers and the neighboring community;

• Compliant with all applicable rules and regulations;

• Consistent with the findings of the “Initial Building Characterization Study Report" and supplemental testing; and

• Consistent with current industry standard practices

Deconstruction Plan Phase I

• Phase I:– Phase IA

• Abatement of identified interior ACBM; • Cleaning and removal of World Trade Center

(WTC) dust within the building;

– Phase IB• “Soft strip and interior gut” of most interior non-

structural materials; and• Erection of the tower crane on the north side and

hoist on the south side of the building.

Deconstruction Plan Phase IA

• Phase IA – Activities will be undertaken from the top of the

building down; – Abatement of interior Asbestos Containing

Building Materials (ACBM); – Dust cleaning and removal; and – Removal of building components needed to

complete the dust cleaning and asbestos abatement.

Means and Methods for Phase IA• Enclose all work areas and establish negative air pressure to ensure

potential contaminants remain in the building.

• Licensed abatement subcontractors will perform limited soft strip to create an open work area, followed by the removal of asbestos containing building materials (ACBM).

• Thorough cleaning to remove any fibers that may have been released during the abatement of ACBM, and to remove the settled WTC dust.

• Prior to any work, all vertical connections between floors will be sealed properly in order to prevent dust from reentering spaces/floors already cleaned and cleared.

• Vertical connections (stairwells and shafts) will be cleaned last once all floors of the building have been cleaned.

Deconstruction Plan Phase IB

• Phase IB– “Soft strip and interior gut” – Removal of interior gypsum wall board partitions,

sprayed-on fireproofing, bathroom fixtures, integral shelving and components; and

– Removal of remaining small scale mechanical, electrical and plumbing components.

Means and Methods for Phase IB• Phase IB soft-strip/interior gut operations shall start at the top of the

building and proceed downward. A minimum buffer zone of one floor shall be maintained between Phase IA and Phase IB work at all times.

• The interior soft strip/interior gut work will be done on two floors at a time using diesel-powered equipment compliant with environmental and safety regulations/standards including, but not limited to the Coordinated Construction Act for Lower Manhattan.

• Water will be used to provide dust control on each floor during this phase of the work.

• Deconstruction debris shall be chuted from upper floors past lower floors on which Phase IA activities are occurring.

Tower Crane and Hoist

• Necessary for material and personnel movement during Phase I.

• Tower Crane will be located at the northwest corner.

• Hoist will be located at the mid-south side on Albany Street.

• Pre-cleaning as necessary will be done at attachment points.

Deconstruction Plan Phase II

• Phase II– Abatement of identified ACBM associated with

the exterior of the structure; – Disassembly and removal of some remaining

interior non-structural materials; – Removal of rooftop mechanical equipment and

the remaining building envelope; and– Deconstruction of the structural components of

the building.

Protective Measures

Waste Sampling –(Section 1)• Classify the waste streams that will be generated as part of

the deconstruction project and identify proper handling, packaging, labeling, transportation, and disposal methods.

– Utilize existing data to determine sampling program;– Collect additional samples of materials in place;– Sampling results to determine personnel, handling, movement, packaging,

transport and disposal requirements.– Any determined hazardous waste will be properly segregated;– Hazardous waste will not be chuted; and– Containers will be secured at all times when not being loaded and be

clearly labeled.

Protective Measures Cont.

Air Monitoring-(Section 2)

Four levels of monitoring established:1. Personnel air monitoring

2. Inside building/proximate work activities

3. Outside building within site boundaries

4. Outside site boundaries in immediate surrounding community


Air Monitoring-(Section 2)Section 2 of the Deconstruction Plan outlines level four of the program:• Utilizing meteorological instrumentation to record wind speed, wind

direction and other pertinent conditions;• Conducting real-time monitoring for potential off-site migration of

emissions using continuous direct read ambient air monitors; and• Conducting integrated air sampling for the following target

compounds: Particulates as Total Suspended Particulates (TSP), metals as TSP, asbestos, silica, mercury, PAH's (polyaromatic hydrocarbons) Dioxins & Furans (D/Fs), and PCBs.


LMDC Proposed Enhanced Exterior Air Monitoring Approach

(on-line at www.renewnyc.com)• To be modified to ensure program is complementary and allows for

QA/QC of Section 2• Proposal includes:

– Additional sampling locations at various elevations (i.e. ground level, rooftops and setbacks)

– Co-located sampling locations for QA/QC purposes – Daily real-time monitoring component– Enhanced analyte list including COPC list

• Project and public notification protocol• Continued submission of results to NYCDEP• Continued public access to air results via LMDC website


Exterior Air Monitoring Trigger Levels

Trigger levels will be developed with Regulators

• Incorporate safety factors that are protective of the public including sensitive populations

• Exceedances will require evaluation of contractor procedures and include work stoppage.

• Regulators will be notified of all trigger exceedances• Public notification protocol • Web-site posting of results at renewnyc.com

Emergency Action Plan (EAP)• Designates appropriate personnel responsible for

implementation and monitoring of emergency procedures.

• Applies to all contractors working on-site including employees and visitors.

• Gilbane Emergency Coordinator – John Graves, licensed New York City Site Safety Manager –Liaison to the First Responder agencies throughout the duration of the project.

• All prime subcontractors will identify an OSHA certified Emergency Coordinator, responsible for the performance of emergency preparedness responsibilities.

• Plan will be revised as necessary during the course of the project.

Emergency Action Plan Cont.

EAP includes:

• Pre- Emergency Planning Activities– Prior to commencement of work, Gilbane Emergency Coordinator

and the LMDC will meet with the FDNY, NYPD, OEM, and Battery Park City Certified Emergency Response Team (CERT) to discuss:

• Emergency Response Activities,

• Agencies roles and responsibilities, and

• To confirm an understanding of the existing building conditions.

• Throughout deconstruction activities the Gilbane Emergency Coordinator will conduct regular emergency preparedness meetings with on-site personnel.

Emergency Action Plan Cont.

• The EAP also includes protocol for building evacuation:– Emergency Response Communication Chart– Emergency Contact Numbers for Local

Authorities– Evacuation Assembly Area– Community Notification

Community Emergency Action Planning

• Pre-Emergency Planning Activities– LMDC has met with Emergency Response

Agencies to initiate a coordinated emergency response plan.

– LMDC has notified surrounding building landlords and superintendents of deconstruction activities and EAP.

– LMDC will arrange for the Gilbane Emergency Coordinator to meet with the Community as necessary.

Community Emergency Action Planning Cont.

• In the event of any emergency necessitating immediate community action, LMDC will rely on the Emergency Response Agencies protocol for informing the community of necessary actions and impacts during the event.

• In the event of incidents impacting the community:– LMDC will activate the phone tree that was established with area

neighbor volunteers. – LMDC will send an email update regarding particular incidents.– LMDC will post flyers in neighboring buildings identifying the actions

that were taken.– LMDC will host briefings to discuss the incident and measures taken

in response to the incident.

Community Emergency Action Planning Cont.

• Along with the City Emergency Response Agencies, the Battery Park City Certified Emergency Response Team (BPC C.E.R.T.) will provide immediate assistance to the community through: – Assistance with community notification through radio

communication – Help with traffic and crowd control and community relations in

the event of an evacuation– Providing medical and other emergency services as necessary

• BPC CERT will continue to work with the LMDC throughout deconstruction on developing emergency response protocol, community drills, and information dissemination

Health and Safety Plan

The HASP Outlines:

• Engineering Controls

• Personal Protective Equipment and decontamination requirements

• Potential physical hazards

• Chemical hazards

Coordinated Construction Act

• LMDC will comply with all regulations dictated by the Coordinated Construction Act, including but not limited to:– The use of Ultra Low-Sulfur diesel fuel;– Hours of operation; and– Pre-planned truck routes

Proposed Truck Routes-Phase I

• LMDC developing plan with NYC DOT, NYS DOT, Port Authority of New York and New Jersey.

• Proposing the use of Washington Street for access to the loading dock and the north plaza area.

• Proposing the use of Albany Street for access to the Hoist.

Next StepsNext Steps

• Receive Comments from Regulatory Agencies

•Removal of remaining Deutsche Bank property from within the building • Submission of plan amendments as required by regulators

• Submission of permit applications

• Approval of plan

• Mobilization at site

Opportunities for Public InvolvementOpportunities for Public Involvement

• E-Updates

• Public Information Sessions

• Comment through the LMDC Website

• Community Board One meetings

30 Seconds

15 Seconds

THANK YOU!

130 liberty street deconstruction project public information session on draft phase i deconstruction...

Documents

deconstruction planpermitting

deconstruction planst

building materials

si results

fireproofing testing

previous environmental

asbestos average

detectable levels of