PROPOSED REMEDIAL ACTION PLAN SOLVENT FINISHERS Jericho, NY Site - PowerPoint PPT Presentation

1 PROPOSED REMEDIAL ACTION PLAN SOLVENT FINISHERS Jericho, NY Site No. 130172 March 15, 2015

2 Solvent Finishers Public Meeting Agenda ! March 15, 2016 at 7 p.m. ! ! Introduction, Public Participation Bill Fonda, Citizen Participation Specialist, NYSDEC Region 1 ! Site Background and Proposed Remedy ! Robert DeCandia, Environmental Engineer II, NYSDEC ! ! Health Assessment ! Jacquelyn Nealon, Public Health Specialist 3, NYS Dept. of Health ! Questions and Answers ! Bill Fonda, Citizen Participation Specialist, NYSDEC Region 1 !

3 Introductions NYS Dept. of Environmental Conservation Bill Fonda, Citizen Participation Specialist NYS Dept. of Environmental Conservation Project Manager Robert DeCandia, Environmental Engineer II NYS Dept. of Health Project Manager Jacqueline Nealon, Public Health Specialist 3

4 MEETING TOPICS Site Location and Description Brief Site History Nature and Extent of Contamination Interim Remedial Measure (IRM) Proposed Remedy Questions and Answers

Site Location

7 Site Description Currently zoned light industrial Current tenants are Rubies Costume with no current solvent use Neighbors are a mix of light industrial, commercial, school, and residential Depth to groundwater is 80 ft bgs and flows north to south LI sands, sporadic clay lens at varying depths and clay about 200 ft bgs

8 Site History 1966 Manufacturer of artificial leather and plastics 1977-1985 Use as an industrial dry cleaner 11,000 gallons of PCE annually to clean large fabric rolls 1985 Manufactured imprinted and embroidered sportswear

9 Site History 1997 Nassau County tests discharge results: 20,000,000 ppb PCE into drywell hold and haul tank installed for waste 1998 Cesspool/drywell cleanouts; excavations to 42 ft. 59 tons of soil was removed and disposed off-site 2008 Site Characterization conducted by NYSDEC Contamination found 2011 SSF Remedial Investigation

10 Remedial Investigation Soil Groundwater Soil Vapor soil gas sub-slab Indoor Air

11 Contaminants of Concern Primary VOC Contaminants • Perchloroethene (PCE) (dry cleaning fluid) • Trichloroethene (TCE)

12 On-site Soil Results Soil Contamination

Investigation Sample locations 14

PCE Shallow Plume 80-180 ft bgs

PCE Deep Plume 200-325 ft bgs

17 Plume Cross Sections

Plume'Cross'Sec.on'A1A 18

Plume'Cross'Sec.on'B1B 19

20 Plume'Cross'Sec.on'C1C

21 Plume'Cross'Sec.on'D1D

22 Plume'Cross'Sec.on'E1E

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AS/SVE IRM

25 Proposed Remedy Elements • Remedial Design • Air Sparge/Soil Vapor Extraction • In-Situ Chemical Oxidation • Enhanced Bioremediation • Vapor Mitigation • Institutional Controls • Site Management

26 Proposed Remedy

27 Solvent Finishers Comment Period The New York State Department of Environmental Conservation is accepting public comments on the proposed remedial alternative through March 26, 2016. Please state your comments during the public meeting or send them in to: ! Thank you for attending our meeting !

28 Thank You Robert D DeCandia Jr., PE Connect with us: Environmental Engineer 2 Facebook: www.facebook.com/NYSDEC Twitter: twitter.com/NYSDEC NYSDEC Flickr: www.flickr.com/photos/nysdec 12 th Floor, 625 Broadway Albany, NY 12233 rob.decandia@dec.ny.gov 518-402-9621 Comments by March 26, 2016

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Remedial Alternative Costs 32

33 Alternative Evaluation Criteria Threshold Criteria ▪ Protection of Human each of the ▪ Compliance with SCGs Primary Balancing Criteria ▪ Long-term Effectiveness and Permanence. ▪ Reduction of Toxicity, Mobility or Volume. ▪ Short-term Effectiveness. ▪ Implementability ▪ Cost-Effectiveness Modifying Criterion. ▪ Community Acceptance .

CDM’s Combined Alternatives 34 (On-site Off-siteGW Distal Plume) Alt ON-Site Off-site GW Distal Plume 1 No Action No Action No Action 2 AS/SVE & EIBAR EIBAR MNA & IC 3 AS/SVE & ISTR EIBAR MNA & IC 4 AS/SVE & P&T EIBAR MNA & IC 5 AS/SVE & ISTR ISCO MNA & IC 6 AS/SVE & ISCO EIBAR MNA & IC AS/SVE= air sparge with soil vapor extraction EIBAR= Enhanced In-Situ Biological and/or Abiotic Remediation MNA= monitored natural attenuation ISTR= in situ thermal treatment P&T= pump and treat ISCO= in situ chemical oxidation

35 Groundwater On-site • PCE: 5.8 to 300,000 µg/L • TCE: 7.4 to 9,900 µg/L Off-site • PCE: 5.5 to 81,000 µg/L • TCE: 5 to 89 µg/L