GM CET BEDFORD FACILITY BEDFORD, INDIANA Public Information Session - - PowerPoint PPT Presentation

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GM CET BEDFORD FACILITY BEDFORD, INDIANA Public Information Session - - PowerPoint PPT Presentation

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GM CET BEDFORD FACILITY BEDFORD, INDIANA Public Information Session December 9, 2015 Facility located on 152.5 acres and is approximately 1,000,000 square feet of manufacturing footprint Approximately 719 employees 1 December 9,

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SLIDE 1

December 9, 2015 1

GM CET BEDFORD FACILITY BEDFORD, INDIANA

Public Information Session December 9, 2015

  • Facility located on 152.5 acres and is

approximately 1,000,000 square feet

  • f manufacturing footprint
  • Approximately 719 employees
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2

REMOVAL ACTION

  • Comprehensive Environmental Response, Compensation,

and Liability Act (CERCLA) Removal Action (RA)

– Bailey’s Branch and Pleasant Run PCB cleanup of creek sediments and floodplain soil – RA Elements:

  • Control of impacted springs and seeps along creek
  • Removal of floodplain soil to 1.8 ppm and sediment to 1

ppm in the creek (removal is complete) – Monitoring continues for large spring on Baileys Branch and – Creek and floodplain restoration completed in August 2014

  • RCRA Corrective Action

– GM LLC and USEPA entered into an AOC for those areas which GM LLC is responsible.

December 9, 2015

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SLIDE 3

GM BEDFORD REMEDIATION PROEJCT

December 9, 2015 3

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REMOVAL ACTION STATUS

December 9, 2015

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INSPECTION OF DOWNSTREAM PARCELS

  • Downstream monitoring and

maintenance conducted in May and October 2015

  • Restoration doing well

5 December 9, 2015

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CREEK REMEDIATION/RESTORATION STATUS WEST OF BAILEY SCALES ROAD

December 9, 2015

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CREEK REMEDIATION/RESTORATION STATUS EAST OF BAILEY SCALES ROAD

December 9, 2015

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CREEK REMEDIATION/RESTORATION STATUS PARCEL 22

December 9, 2015 8

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CREEK REMEDIATION/RESTORATION STATUS PARCEL 76

December 9, 2015

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CREEK REMEDIATION/RESTORATION STATUS PARCEL 36

December 9, 2015

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COVER SYSTEM MONITORING AND MAINTENANCE

  • GM conducts quarterly inspections of the cover system
  • Inspections found:

– Tree saplings which were removed when found (primarily in ditches and adjacent to wooded areas) – Riprap washout in diversion channel (repaired with larger riprap) – Minor asphalt cracks (repairs planned following construction completion of GWTP and Pilot Trench)

December 9, 2015

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SLIDE 12

VAULT OPERATIONS, MONITORING & MAINTENANCE

  • Monitoring of the gravel

underdrain system, leak

detection system and leachate collection systems continues

– Not enough water to collect monthly samples from the LDS in December 2014 through June 2015, and again in August 2015

  • Vault Annual Report for 2014

submitted on July 15, 2015

13 December 9, 2015

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SSC OPERATION AND MAINTENANCE

  • Operation of the Site

Source Control (SSC) System continues

14 December 9, 2015

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SLIDE 14

WATER TREATMENT PLANT OPERATIONS

  • SSC water and storm pond water

treatment continues

  • Continue to address algae fouling –

phoslock was applied in June 2015

  • Installed additional bag filters prior

to carbon units

  • Installed components to backwash

filter media using treated groundwater

December 9, 2015 15

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SLIDE 15

ADDITIONAL CREEK WORK

December 9, 2015 16

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SPRING 18 MONITORING

17 December 9, 2015

  • Continue to collect monthly quarterly opportunistic samples from Spring 18 and

analyze for PCBs

  • No opportunistic samples were collected during the 3rd quarter of 2015
  • 12-month rolling average (December 2014 - November 2015) = 0.18 ug/L
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SLIDE 17

SWALLET MONITORING

  • Additional sealing of cracks in the rock

18 December 9, 2015

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EI CA750 MONITORING

  • Quarterly static groundwater level measurements collected in September 2015
  • EI CA750 sampling event conducted in May 2015 - results provided to U.S.EPA in

October 2015

  • Groundwater elevations appear to show no significant changes under the Cover System
  • Second 2015 sampling event occurred in early November 2015
  • EI CA750 or pilot trench monitoring program will continue until a long term

groundwater monitoring plan is in place

  • Re-assess frequency and/or scope of monitoring

December 9, 2015

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INCREMENTAL SOIL SAMPLING PLAN

  • incremental surface soil sampling will be conducted in select areas of

the East Plant and West Plant Areas

  • Sampling will target areas:

Not covered by East/West Plant Cover System Not currently paved with hard surface maintained by Plant Areas more prone to potential worker exposures

December 9, 2015

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SLIDE 20

PARCELS 400-430-431

  • Additional boreholes to be advanced to further

delineate the proposed prescriptive excavation limit

  • Cleanup activities will be developed following

delineation

21 December 9, 2015

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AOI 8 SYSTEM DESIGN

  • U.S.EPA approved conceptual design
  • Working with supplier to design site-specific oil collection

system

December 9, 2015

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SLIDE 22

December 9, 2015 23

  • GM is constructing a GWTP to

treat waters generated from remediation water including waters from the perimeter groundwater trench collection system

  • Construction is to be

completed by the end of 2015

  • Treated groundwater will be

discharged under a NPDES permit (public notice ended November 16, 2015) WATER TREATMENT PLANT OPERATIONS

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SLIDE 23

GWTP INPUTS

December 9, 2015

Vault Sumps Wet Wells #1 and #2 Wet Well #3 Wet Well #4

24

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PILOT PERIMETER GROUNDWATER TRENCH COLLECTION SYSTEM

  • Pilot perimeter groundwater trench collection system construction

began in August 2015 with construction of the working platform

  • Rock cutting began in October 2015 and has been completed
  • Wet well, perforated pipe and gravel backfill to be installed

during December 2015

  • Final backfill and cover system to be installed during January and

February 2016

December 9, 2015

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TEMPORARY WATER TREATMENT PLANT

December 9, 2015

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WORKING PLATFORM CONSTRUCTION

December 9, 2015

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SUPPORT ACTIVITIES

December 9, 2015

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TRENCHER ASSEMBLY

December 9, 2015

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TRENCHER ASSEMBLY

December 9, 2015

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TRENCH CONSTRUCTION

December 9, 2015

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TRENCH CONSTRUCTION

December 9, 2015

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  • Community meetings have been held on a regular basis,

currently meeting twice/year

– Meetings will continue to be announced in the Bedford Times Mail – Presentations have been and will continue to be posted to the website and the library – People can always call Katie Kamm with questions: (812) 277-8954

  • A CLP meeting was held today
  • Information from the presentations and meeting minutes

are posted to the website COMMUNITY RELATIONS ACTIVITIES

December 9, 2015

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  • Project website at:

http://www.BedfordPowertrainCorrectiveAction.com

  • Quarterly Community Meetings are available on the website
  • Final approved documents can be found on the project website
  • Community Liaison Panel (CLP) – members listed in minutes on

website

  • Periodic information sessions – next meeting likely to be held June

2016.

  • Periodic Project Fact Sheets (forty-one issued to date)
  • Project Questions contact Katie Kamm: (812) 277-8954

COMMUNITY RELATIONS ACTIVITIES

December 9, 2015