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Cytec Statement of Basis and Permit Modification July 16, 2012 Public Hearing Ohio Environmental Protection Agency.

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Presentation on theme: "Cytec Statement of Basis and Permit Modification July 16, 2012 Public Hearing Ohio Environmental Protection Agency."— Presentation transcript:

1 Cytec Statement of Basis and Permit Modification July 16, 2012 Public Hearing Ohio Environmental Protection Agency

2 The purpose of tonight’s hearing is to receive comments from the public on Ohio EPA’s preferred remedy (called “the Statement of Basis”), for SWMU 1 (North Landfill), and draft permit modification. Cytec Public Hearing

3  Ohio EPA issues draft Statement of Basis and permit modification for public comment (6/13/12)  45 day public comment period (6/13/12-7/28/12)  Public hearing (7/16/12)  After comments are received and reviewed, Ohio EPA will respond to all relevant comments in writing  After considering comments, Ohio EPA issues final decision Permit Modification Process

4 American Cyanamid 1976

5 SWMU 1, North Landfill

6 North Landfill Today

7 C Cytec Site

8  54 acre site located on Greene Street in Marietta  Industrial activity since 1915  Manufactured dyes, DDT, UV absorbers, rubber additives, specialty chemicals  Wastes disposed of in on-site landfills, ponds and other waste areas  Ponds 1 and 2 used for wastewater equalization & settling  North Landfill closed in 1979; clean soil (clay) added, leachate collection system installed  Chemical manufacturing ceased in 1996  In 2002, production buildings were demolished History of Cytec

9  Soil sampling - 19 soil borings installed  Three ground water monitoring wells  Three monitoring wells (piezometers) installed within the landfill boundary to measure ground water levels  Geotechnical Analysis completed from soil boring information  Ground water Pump Tests North Landfill Recent Site Investigation (2011)

10  Soil near the landfill consists primarily of clay and silt  Waste material is feet thick  Primary ground water flow is in the weathered bedrock zone  Ground water flows into Duck Creek North Landfill Site Investigation Findings

11  A study to evaluate different cleanup options. The study resulted in a CMS Report which was reviewed and approved by Ohio EPA.  Cytec recommended cleanup measures for the site. For the North Landfill, alternatives divided into (1) soil/waste and (2) ground water. Corrective Measures Study

12 Soil cleanup options evaluated for SWMU 1 :  No Action - $50,000  Cap augmentation with soil (clay) - $280,000  Cap augmentation with synthetic liner-$260,000  Cap augmentation with clay, synthetic liner, drainage layer - $740,000  Excavation with off-site disposal - $29,740,000 (assumes 50% hazardous waste)  Excavation with off-site disposal - $13,458,785 (assumes 100% solid waste) Corrective Measures Study

13 Ground water cleanup options evaluated specific to the North Landfill:  Hydraulic control (pump and treat) - $200,000  Containment (ground water barrier)  Sheet pile wall - $1,960,000  Sheet pile wall w/hydraulic control - $2,030,000  Slurry wall (Bentonite clay) - $800, 000  Slurry wall w/hydraulic control - $850,000 Corrective Measures Study

14  Soil & plastic liner cap augmentation with leachate collection  Slurry wall installation along the western and southern boundaries of the landfill Ohio EPA Proposed Alternative for the North Landfill

15  Installation of a clay berm (or equivalent berm/barrier) in the northeast portion of the landfill  Institutional controls (environmental covenant) Ohio EPA Proposed Alternative for the North Landfill

16 Proposed Slurry Wall Location in Red

17 Slurry Wall Installation

18  SWMU 26, East Storage Pad – Excavation with off-site disposal  “OSC-A” (Tank Saddle Area) – Extend the cap from SWMU 10  Drainage Swale – No further action  Duck Creek – Periodic monitoring to ensure that remedies are effective Additional Actions

19 East Storage Pad

20 OSC-A Tank Saddle Area

21 Drainage Swale and Duck Creek

22  Site-wide ground water contamination will be addressed by ground water pumping wells, placed along the east side of the property, to prevent migration of ground water off-site; monitoring plan to be submitted to Ohio EPA  Areas with waste remaining will be addressed with an Environmental Covenant – a legally enforceable document that will impose use and activity limitations on the property or a portion of the property (for example, prohibiting the use of on-site ground water and prohibiting on-site soil excavation) Remedial Alternatives Proposed to be Applied Site-wide

23  Public comments accepted through July 28, 2012  Ohio EPA written response to comments  Ohio EPA selects final remedies, written final action  Corrective measures workplan submitted by Cytec within 90 days of Ohio EPA’s written final action  Ohio EPA review, subsequent approval  Cytec implements remedies  Operation, maintenance, financial assurance Next Steps in Clean Up Process

24  Questions about public involvement: Amber Finkelstein (614)  Questions about remedial alternatives: John Rochotte (740)  Questions about permit/permit modifications: Donna Goodman (740) Ohio EPA Contacts

25  Link to Draft Statement of Basis: (bottom right corner under “stakeholder input”, click on “read more”)http://www.epa.ohio.gov/dmwm  Verbal and written comments accepted tonight  Additional written comments by July 28, 2012 to: Ohio EPA, Division of Materials and Waste Management Attn: Engineering, Remediation and Authorizations Section P.O. Box 1049 Columbus, OH phone (614) fax (614) Public Information and Comments

26 Cytec Site


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