PUBLIC MEETING

August 26th, 2010

Ten-Mile Drain Site

INTRODUCTION

US EPA REMEDIAL BRANCH

Staff working on Site

Colleen Moynihan, Remedial Project ManagerMegan McSeveney, Community Involvement CoordinatorMargaret Herring, Civil InvestigatorAndre Daugavietis, Site Attorney

PARTNERS with EPA

St. Clair Shores Community and Public officialsMichigan Department of Natural Resources and Environment(DNRE)Michigan Department of Community Health (MDCH)Macomb County Health Department (MCHD)Macomb County Public Works Office (MCPWO)

PURPOSE OF THE MEETING

Community Involvement

EPA Conducted Community Interviews in early July

Community Involvement Plan is a living document How the public would like to receive information, meetings

Identify community concerns

PCBs & Health Concerns Property Source Investigation Need for Transparency

Concerns

Agenda

History of Site

Superfund Program- REMEDIAL BRANCH

2010 Activities

Next Steps

Question and Answer

Ten-Mile Drain Storm Water System

OUTFALL

History of Site

2002 Polychlorinated biphenyls (PCBs) discovered in the

Ten-Mile Drain and discharging into the canal

Lange Canal Aerial

2002 & 2003 Cleaned drain anddredged the most contaminatedsections of the canal.

May 2005 drilled 64 additionalsoil samples locations insuspected source areas

Installed a liner within a portion of the drain in 2006 toreduce/prevent PCB infiltration

Lined portion ofthe drain=1,000 ft

Superfund Program

Remedial Actions: long-term cleanups designed to prevent or minimize

the release of hazardous substances and to reduce the risk and danger topublic health or the environment.

Removal Actions: immediate, short-term responses intended to protect

people from immediate threats posed by hazardous waste sites.

SuperfundRemedial Process

National Priority List (NPL)

Remedial Investigation (RI)(Nature and extent)

Feasibility Study (FS)(Potential cleanup options)

Selection of Remedy

Remedial Design (RD)(Technical plans for chosen remedy)

Remedial Action (RA)(Construction)

Operation & Maintenance (O&M)(remedy continued to be effective)

Ten-Mile DrainRemedial Process

NPL Listing Status:

US EPA worked with DNRE to propose the site to the NPL Comment period has closed with minimal comments

The next Federal Register update is expected in September

National Priority List (NPL)

SOURCE INVESTIGATION

Feasibility Study (FS)

Selection of Remedy

Remedial Design (RD)

Remedial Action (RA)

Operation & Maintenance (O&M)

Remedial Investigation (RI)

Ten-Mile DrainRemedial Process

SOURCE INVESTIGATION

Soil Core

Searching for aPotentially Responsible Party (PRP)

EPA civil investigator finds evidence based on your tips.

Superfund Program Funding

The Superfund Trust Fund: In 1980s the money came mainly from taxes on thechemical and petroleum industries.

The Trust Fund is use primarily if no potentially responsible parties are found orprps can not pay.

The tax ended in 1990, today money for the Superfund Program appropriatedby Congress

**PRP search is ongoing throughout the cleanup process****Funding is available whether we find a PRP or not**

2010 Activities

15 weirs installed (total of 17)

Collected Sediment Samples behind the weirs

Source Investigation: Followed-up on tips from the public43 borings (98 samples)

EPA removed sediment from the drain

Subsurface investigation: Ground Penetrating Radar, Electro Magnetic (EM)

Collected Groundwater samples from 6 permanent monitoring wells(Bon Brae and Harper)

Removed sediment and PCBs from the drain byDewatering and high-pressure jet vacuuming

Weirs were installed to….1) Prevent movement of sediment2) Assist in identifying PCB source area

Weirs installed at selected Manholes along Bon Brae, Harper,Lakeland Street and the corner of Jefferson and Bon Brae

Source Investigation Tips and Follow-up

TIP ACTION RESULTS

Harper Auto Electric(26225 Harper)-storage of transformers

6 soil boring samples12 soil samples

No PCBs detected in 11 samples1 sample PCB less 1ppm

Harper Apartments(26332 Harper)-Dumping of transformers

2 soil borings4 soils samples

No PCBs detected

21607 Lakeland-Telephone buried in backyard

EM survey No detections

Car WashCenterline Electric(26300 Harper)-stripping transformers

14 soil borings29 soil samples

No PCBs detected in 23 samples6 samples PCB below 1ppm

Buried transformers along 10 MileRoad during construction in1950’s

40 soil boringEM survey

PCBs detected in 25 of the 80 samples-highest concentration 6 ppm

BP Station(26220 Harper)-old underground tanks

EM survey EM survey was unsuccessful because ofall underground piping

Boring-2 inch probe 16ft into ground.Electro Magnetic-EM survey sends signals down in ground to detect metals.

Next Steps

Source Investigation Strategic Plan Subsurface Historic: Aerial Photos, Sandborn Maps (1933-1952)

Update the Community Continue to update local officials Outreach

Concerns

PCBs & Health Concerns

Property

Source Investigation

Need for Transparency

Community Involvement

Community Involvement or CAG

Made up of member of the Community

Designed for the exchange of information among the local communityand EPA and other agencies involved in the cleanup

Technical Assistance Grant or TAG

Thank you

Ten-Mile Drain Website

http://www.epa.gov/region5/sites/tenmiledrain/index.html

Question and Answer