Cleanup Progresses at Former Factory Complex

Buick City Site Revitalizing Auto Communities Flint, Michigan November 2018 Environmental Response Trust

The former General Motors-Buick City manufacturing complex is For more information undergoing environmental cleanup that will take several years to complete. If you need more information, have Buick City includes approximately 413 acres divided into the Northend questions or would like to be added (north of Leith Street) and the Southend (south of Leith Street) – see to the mailing list about the Buick attached Site Map. Revitalizing Auto Communities Environmental City site, please contact one of these Response (RACER) Trust is tasked with conducting the cleanup and individuals: marketing the property for sale and redevelopment. The U.S. Environmental Protection Agency (EPA) authorizes and oversees the Christopher Black required cleanup work with the support of the Michigan Department of EPA Project Manager Environmental Quality (DEQ). RCRA Corrective Action Section 2 312-886-1451 Two parcels (one on the Northend and one on the Southend), totaling [email protected] approximately 49 acres, have been sold and successfully redeveloped for EPA toll-free: 800-621-8431 new manufacturing operations. About 364 acres are still owned by EPA Region 5 RACER Trust and are available for purchase and redevelopment. RACER 77 W. Jackson Blvd. Trust continues to work on completion of the necessary environmental Chicago, IL 60604-3590 cleanup work for the entire 413-acre site. Environmental cleanup that is necessary because of GM’s historical operations remains RACER Trust’s Kevin Lund, PE responsibility, regardless of who owns the property. MDEQ Project Coordinator Redevelopment Support Site Conditions 517-513-1846 Buick City contains soil and groundwater (water below the surface) that is [email protected] contaminated with various petroleum products and chemicals that were Jackson District Office used as part of GM’s car and truck manufacturing. Some of the petroleum 301 East Louis Glick Highway products float on top of the groundwater and are very difficult to remove. Jackson, MI 49201-1556 Select areas of the Buick City property also have contamination levels in soil that require cleanup. The goal of the Buick City environmental work is Grant Trigger to meet EPA and MDEQ cleanup standards and support redevelopment of Cleanup Manager-MI the site. RACER Trust 855-RACER-411 [email protected] 500 Woodward Ave.

Suite 2650 Detroit, MI 48226

Information repository and website: A file containing official documents about the Buick City site is available for your review at the Flint Public Main Library, 1026 E. Kearsley St., or see http://www.epa.gov/region5/cleanup /rcra/buickcity/index.html Example of soil excavation work at the Buick City property. 1

Also, bulkheads that completely block storm water flow have been installed at multiple locations inside the storm sewers to prevent contaminants from the property to reach the city storm sewer system. In addition, one storm sewer line was re-routed before entering the property to avoid potential contamination.

Bulkheads cannot be used on the primary sewer lines because those lines also drain other properties in the city, much like tributaries drain into a river. An engineering study is under way to determine if another primary main line can be re-routed to avoid an area of

This building contains a treatment system that extracted/ contamination between Leith Street and Stewart Street. removed and treated gasoline-contaminated liquid and vapor from beneath the property. PFAS Current work is focusing on the recent discovery in groundwater of new contamination - so-called PFAS (Per- and polyfluoroalkyl substances) – (see attached Cleanup work sample location map) which have been used by Soil hundreds of industries and in consumer products such Covers were placed over six areas in the Southend as carpeting, clothing, upholstery (Scotchguard), food where lead-contaminated soil is located that keep the paper wrappings, fire-fighting foams and metal plating. soil in place and prevent human contact with There is much still to learn about the PFAS impacts at contaminants. The covers consist of a fabric barrier Buick City and other RACER properties where PFAS is with six inches of crushed stone over the fabric. Some known to be present. Importantly, to the best of our of the affected soil was partially covered by concrete or knowledge, none of the PFAS at Buick City is other material. Regular inspections are required to impacting any known drinking water source. make sure the soil covers remain in place. Maintenance In addition to the covers, approximately 600 cubic While final cleanup steps are being developed, four yards of soil contaminated with PCBs, manganese, lead outfalls to the Flint River continue to be maintained and/or a chemical called benzo(a)pyrene were dug up using oil absorbent booms and/or oil-water separators. and disposed of in a landfill. Multiple sections of the property’s perimeter security

fence have also been repaired or replaced, and trees and Underground petroleum bushes removed to improve how the property looks. A multi-phase (liquid and vapor) removal system (see photo above) was operated at the Southend to cleanup Next steps an underground gasoline plume located near the corner More investigation is needed to completely assess of Hamilton and Industrial avenues. A plume is conditions at the property and develop cleanup plans underground contamination usually associated with that protect public health and the environment. groundwater. Mixtures of groundwater, gasoline, and underground vapors were removed by this treatment In addition, EPA will prepare a proposed final report system. In 2013-2014, more than 4,300 pounds of called a Statement of Basis for the Northend which will gasoline liquid and vapor were removed. outline EPA’s recommended cleanup approach. The public will have an opportunity to comment on the Storm sewers Statement of Basis before EPA issues its Final Fifteen storm sewers pass through and serve the Buick Decision. After the Final Decision, RACER Trust will City property. All but one small sewer also collects submit for EPA approval a final remedy report called storm water from the City of Flint and other nearby the Corrective Measures Implementation Work Plan. properties. Absorbent booms designed to soak up potential petroleum or petroleum byproducts were The objective is to complete the major components of active cleanup by 2020. Long-term monitoring of the installed in four storm sewers where they empty into the Flint River. RACER continues to inspect and property is expected to continue through the year 2060. maintain these absorbent booms.

2 ASW PROPERTY (FORMERLY OWNED BY RACER)

SITE BOUNDARY

NORTHEND

NORTH END NORTH END SOUTH END SOUTH END LAYOUT: 1 SAVED: 4/11/2017 1:35 AM ACADVER: 20.1S (LMS TECH) PAGESETUP: ---- PLOTSTYLETABLE: ---- PLOTTED: 1/26/2018 8:52 PM BY: PLOTSTYLETABLE: 1/26/2018 8:52 PM ACADVER: 4/11/2017 1:35 AM 20.1S (LMS TECH) PAGESETUP: ---- SAVED: PLOTTED: LAYOUT: ---- 1

SOUTHEND

LEAR CORPORATION PROPERTY (FORMERLY OWNED BY RACER)

SOURCE: USGS 7.5 MIN., FLINT NORTH QUADRANGLE, FLINT NORTH 2014

RACER TRUST BUICK CITY FLINT, MICHIGAN

PROJECTNAME: ---- PROJECTNAME: AREA LOCATION SITE LOCATION MAP

MI_Flint North.jpg MICHIGAN IMAGES: 0 2000' 4000' FIGURE XREFS: SANCHEZ, ADRIAN CITY:SYRACUSE-NY DIV/GROUP:ENV DB:A.SANCHEZ LD:GMS PIC:C.S.PETERS PM:C.KIKER TM:C.KIKER LYR:(Opt)ON=*;OFF=*REF* C:\Users\alsanchez\OneDrive - ARCADIS\BIM 360 Docs\RACER TRUST\2017 Buick City RCRA\2018\B0064410.2017\01-DWG\RTBC-F-SITE LOCATION.dwg APPROXIMATE SCALE IN FEET 1 APPROXIMATE LOCATION OF WATER INTAKE LEGEND

RACER PROPERTY BOUNDARY LOCATION WHERE HISTORIC OPERATIONS MAY HAVE USED PFAS MONITORING WELL SAMPLING LOCATION

STORM SEWER SAMPLING LOCATION SANITARY SEWER SAMPLING LOCATION

D: 11/8/2018 11:38 AM11/8/2018 11:38 SANCHEZ, ADRIAN BY: D: ANALYTICAL RESULTS DO NOT EXCEED CRITERIA

ANALYTICAL RESULT EXCEEDS GSI CRITERION

ANALYTICAL RESULT EXCEEDS DRINKING WATER CRITERION

JAMES P. COLE BOULEVARD ANALYTICAL RESULT EXCEEDS 1,000 ng/L PROPOSED MONITORING WELL SAMPLING LOCATION GROUNDWATER FLOW DIRECTION STORM SEWER LINE SANITARY SEWER LINE .0S (LMS TECH) PAGESETUP: ---- PLOTSTYLETABLE: ------.0S (LMS TECH) PAGESETUP: PLOTTE

ASW STEWART AVENUE Property

FIREFIGHTING TRAINING AREA

TWORK.dwg LAYOUT: . SAVED: 11/8/2018 11:23 AM21 TWORK.dwg LAYOUT: . SAVED: ACADVER: ANDREW STREET FORMER PAINTING AREA PIERSON ROAD =*;OFF=*REF*

FORMER WWTP AREA Lear ASSEMBLY AND PAINT Property

INDUSTRIAL AVENUE BLDG 44 ASSEMBLY Lear Property S PIC: C.S.PETERS PM: C.KIKER TM: C.KIKER LYR: ON S PIC: C.S.PETERS PM: BUICK CITY RCRA\2018\B0064410.2018\01-DWG\RTBC-F-SITE SAMPLE NE BUICK CITY RCRA\2018\B0064410.2018\01-DWG\RTBC-F-SITE LEITH STREET NORTH STREET HAMILTON AVENUE

RACER TRUST BUICK CITY FLINT, MICHIGAN

PROJECTNAME: ---- PROPOSED MONITORING WELL PFAS SAMPLING LOCATIONS IMAGES:

FIGURE

CITY: SYRACUSE DIV/GROUP: ENV DB: A.SANCHEZ LD: ALS/GM CITY: SYRACUSE DIV/GROUP: - ARCADIS\BIM 360 Docs\RACER TRUST\ C:\Users\alsanchez\OneDrive 9