Massachusetts Bay Readville 5 Yard Facility, PIP Meeting …€¦ · · 2008-11-17Readville 5...

Readville 5 Yard Facility, PIP Meeting

Readville 5 Yard FacilityPublic Involvement Plan MeetingNovember 5, 2008

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BENJAMIN ST

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MILTON ST DANNY RD

QUINCY AVE

PINEFIELD RD

WHITING AVE

MARION ST

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Massachusetts BayTransportation Authority


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Agenda

• Welcome – Janis Kearney, MBTA

• Meeting Kick-Off– Ilyas Bhatti, President, The Bhatti Group

• Results of Environmental Investigation– Elissa Brown, LSP, Earth Tech AECOM

• Questions and Answers– Ilyas Bhatti, President, The Bhatti Group

• Closing Remarks– Debra Darby, Site Remediation Specialist, MBTA


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Meeting Kick-Off


• Goals for this meeting– To present the result of the environmental

sampling and discuss remedial measures

– To begin to solicit and address concerns

– To inform you how to access information and how to provide comments after the meeting



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Meeting Kick-Off


• Sign - In

• Recognition of Officials

• Meeting Rules– Reserve questions until end of presentation

• Pads and pens provided


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• Supplemental Phase II – Soil Sampling– Risk Characterization

• Supplemental Phase III– Remedial Alternatives Analysis

• Revised Phase IV– Remedy Implementation Plan

MassDEP Report



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• Additional Stockpile Sampling– Shallow, mid-depth, deep– Field screening– Laboratory analysis of select samples

• Lead• Arsenic • Leachable lead• Petroleum hydrocarbons/PAHs

– Results confirmed earlier evaluation

Supplemental Phase II –Comprehensive Site Assessment - Soil Stockpiles



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• Confirmation of Developer’s Soil Data– Focused in worst areas – Field screening – Laboratory analysis of select samples

• Lead• Arsenic• Leachable lead• Petroleum hydrocarbons/PAHs

– Confirmed earlier results• Lead• Most soil impacts are at the soil surface (0 – 3 ft)

Supplemental Phase II –Comprehensive Site Assessment - Sitewide Soil



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• Groundwater– Previous testing indicated no groundwater

contamination– No further testing was conducted this summer

Supplemental Phase II –Comprehensive Site Assessment - Groundwater



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Supplemental Phase II –Comprehensive Site Assessment - Results


• Risk Characterization – Evaluates risk under current conditions

• No significant risk to the environment • No significant risk to safety• No significant human health risk off-site

• Risk to human health for on-site workers• Risk to public welfare

– Conclusion• Soil remediation is required


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Supplemental Phase III –Remedial Alternatives Analysis – Evaluation Process

• Incorporates new Phase II data• Cleanup goal - MBTA rail yard



Comparison of Risk-Based Cleanup Levels –Commercial / Industrial (parts per million)


1,7651,687

Developer

2,90036

Original Phase II

(as amended)

1,76536

LeadArsenic

Earth TechAECOM

Compound

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Comparison of Soil Cleanup Levels *(parts per million)


3,000200

1,76536

1,10021

LeadArsenic

Risk-Based Cleanup Level

BackgroundConcentration

Upper Concentration

Limits

Compound

* Final background concentrations and risk-based cleanup levels may change pending review by MassDEP.

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• What is feasibility analysis?– With the commercial/industrial goal in mind

• Effectiveness• Short and long-term reliability• Implementability• Cost • Risks • Benefits • Timeliness • Non-pecuniary affects

– Evaluate feasibility of reducing levels to below Upper Concentration Limits


• Four alternatives evaluated1. Remove all soil above risk-based levels/off-site disposal2. Remove all soil above UCLs/off-site disposal3. Remove soil to below UCLs and to meet risk-based

cleanup levels/off-site disposal4. Cap contaminated soil with an engineered barrier

• Regardless of the alternative– Remove hot spots – Remove stockpiles – Stabilize soil remaining– Implement deed restriction




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Comparison of Four Remedial Alternatives


9,600

11,550

34,100

48,600

Estimated Soil Volume to be

Removed(cubic yards)

$ 53. Remove Soil to Below UCLs and Meet Risk-Based Cleanup Levels

$162. Remove All Soil Above UCLs

$ 84. Cap Contaminated Soil With Engineered Barrier

$231. Remove All Soil Above Risk-Based Levels

Estimated Cost($ Millions)

Alternative

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Supplemental Phase III –Remedial Alternatives Analysis – Preferred Alternative

• Preferred Alternative– Remove soil to below UCLs and to meet risk-based cleanup

levels/off-site disposal

• Rationale– Reduces risk to meet future industrial/commercial use– Allows for permanent closure under environmental

regulations– Protective of groundwater– Doesn’t require capping– Leaves open the possibility of future additional remediation



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Revised Phase IV –Remedy Implementation Plan – Conceptual Plan

• Conceptual engineering design plan– Remove / Off-Site Disposal

• The areas of highest contamination levels• Most of the stockpiles• Hotspots

– Stabilize Remaining Soil

– Implement deed restriction that requires that the site continue to be used for commercial/industrial purposes


Readville 5 Yard Facility, PIP MeetingMassachusetts BayTransportation Authority

Area 2Western

Fence Line

Area 4Exclusion

Zone

Area 3Main Rail Yard

Area 1Orphan

Line

14111401 1408 14531404 1414 14501417 1421 14471424 1427 14441430 1434 1437 144014391438 144114361435 1442143314321431 1443 14561428 144514261425 144614231422 1448142014191418 144914161415 145114131412 145214101409 1454140714061405 145514031402 1429

41 82 93 5 76 11 534744 5014 17 4021 24 3727 30 34333231 35 5628 362625 382322 39201918 411615 421312 4310 45 46 48 49 51 52 54 5529

57

113

897

169

337

505

673

953

225

841

785

729

393

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617

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1177

1065

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1009

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840

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1120

1176

1288

1232

1064

1344

1008

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0 100 20050

Feet

Lead Exceedences (Lab Results)

Lead Exceedences (XRF Sample)

Arsenic Exceedences (Lab Results)

Sample Location

Grid Sample Location

Risk Assessment Areas

November 5, 2008

0 to 3 Feet

UCL Exceedences(Pb: 3000 mg/kg, As: 200 mg/kg)

Phase IV RIP MBTA Readville 5-Yard Site

Figure 16

Lead and Arsenic

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Readville 5 Yard Facility, PIP MeetingMassachusetts BayTransportation Authority

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S19-A

S16-D

S16-F

S8-A

S7-BS7-A

S20-C

S20-A

S20-D

S10-C

S10-AS22-A

S5-B

S6-B

S9-A

S17-AS16-A

S16-B S16-C

S9-B

S18-A

S16-E

S20-B

S4-A

S21-A

S10-BS5-A

S5-C

S3-A

S6-A

800797790

846

908

10751073

SS10-0.5 Ft

SS220-0.5 Ft

HB/GP-242-4 Ft

6390-0.5 Ft

6370.5-3 Ft

6940.5-3 Ft

6930.5-3 Ft

6920.5-3 Ft

9060-0.5 Ft

0 100 20050

Feet

Soil Excavation and StockpileRemoval for Off-Site Treatment

& Disposal (Alternative 3)

Soil Stockpile

Stockpile Location

Stockpile Soil Failed TCLP Analysisfor On-Site Stabilization and Off-SiteDisposal

UCL Soil Exceedance for On-SiteStabilization and Off-Site Disposal

RBC Soil Exceedance forOff-Site Disposal

PCB Impacted Soil for Off-Site Disposal

Soil Excavation by Grid Cell

UCL Soil Exceedance from 0-3 Feet bgsfor On-Site Stabilization and Off-Site DisposalUCL Soil Exceedance from 3-6 Feet bgsfor On-Site Stabilization and Off-Site DisposalSoil Failed TCLP Analysis from 0-3 Feet bgsfor On-Site Stabilization and Off-Site Disposal

Sampling Grid

Hot Spot

Hot Spot Removal

Area 4 Exclusion Zone

Phase IV RIPMBTA Readville 5-Yard Site

Figure 19

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Revised Phase IV –Remedy Implementation Plan - Results

• After remediation– No cap or engineered barrier– Sitewide contamination will be reduced to below UCLs– No significant risk to future site workers or the neighborhood

• Timeframe– Remediation work is expected to be completed within 18

months of awarding the remediation contract

• Cost– $ 5.75 million included in FY 2007-2012 Capital Plan



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Revised Phase IV –Remedy Implementation Plan – Plan Details

• Detailed engineering plans and specifications– Specifications will include:

• Plan to monitor dust and immediately correct situation

• Plan to ensure that trucks are clean and secure before leaving the site

• Allowable truck routes to minimize disturbance to neighbors

• Plan to ensure that trucks are clean and secure before leaving the site

– Expected in Winter - Spring 2009



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Schedule for Supplemental Phase II / III and Revised Phase IV Report

• Draft report available: – www.mbta.com/about_the_MBTA/environment– Dedham Public Library, 43 Church Street, Dedham– Hyde Park Branch Library, 35 Harvard Avenue, Hyde Park– DEP Northeast Office, 205B Lowell Street, Wilmington

• Public comment period– 20-day public comment period beginning today– Public comment period ends November 25, 2008

• Debra Darby, MBTA, 10 Park Plaza, Boston, MA 02116• [email protected]



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Schedule for Remediation

• Other key dates– Final report to MassDEP on December 24, 2008– Public meeting on plan details: Winter - Spring 2009



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Questions and Answers



Comparison of Dose from Fugitive Dust vs Total Dose


0.3 %0.2 %

37.0 %62.5 %

Lead Hot Spot - AdultIngestion of DustInhalation of DustIngestion of SoilDermal Contact with Soil

0.2 %0.1 %

42.8 %56.8 %

Lead Hot Spot - YouthIngestion of DustInhalation of DustIngestion of SoilDermal Contact with Soil

Percent of Total Chronic Average Daily Dosage

Scenario


Comparison of Maximum Soil Concentrations Detected (parts per million)


8,18044

N/AN/A

50,00059

StockpilesLeadArsenic

67,300253

Developer

24,000140

Original Phase II

49,10070

SoilLeadArsenic

Earth TechCompound

Massachusetts Bay Readville 5 Yard Facility, PIP Meeting …€¦ · · 2008-11-17Readville 5...

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Transcript of Massachusetts Bay Readville 5 Yard Facility, PIP Meeting …€¦ · · 2008-11-17Readville 5...