1 / 10

Expedited Remediation of Chlorinated VOCs under the Georgia Brownfields Program

Expedited Remediation of Chlorinated VOCs under the Georgia Brownfields Program. Theresa Hui, Brown and Caldwell 2007 AWMA Annual Meeting & Technical Conference, St. Simons Island, GA August 8, 2007. Site Assessment History.

nickan
Télécharger la présentation

Expedited Remediation of Chlorinated VOCs under the Georgia Brownfields Program

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Expedited Remediation of Chlorinated VOCs under the Georgia Brownfields Program Theresa Hui, Brown and Caldwell 2007 AWMA Annual Meeting & Technical Conference, St. Simons Island, GA August 8, 2007

  2. Site Assessment History • Former electrical components manufacturing facility, operated since late 1960s • 2004 ESAs identified VOCs exceeded NCs in soil and groundwater, SVOCs in SW detention basin • Suspected VOC sources of the release – former plating and former parts degreaser • HSRA release notification was submitted to EPD in May 2004, but the Site was not listed. • Manufacturing operations were moved out of the U.S.

  3. Site Delineation

  4. Brownfields Eligibility • Establishment of pre-existing release of regulated compounds. • Establishment of groundwater baseline for limitation of liability. • Release notification, but property not listed on HSI - Voluntary Brownfields Cleanup • Incentives for property transaction/ redevelopment by prospective buyer • Owner/seller initiated voluntary soil cleanup activities to attract prospective buyers

  5. Remediation Alternatives Analysis Soil Treatment Options • Excavation and Off-site Disposal • Chemical Oxidation • Soil Vapor Extraction • Electrical Resistance Heating Driver: Technologies must be quick and effective Indoors: Outdoors: Electrical Resistance Heating (ERH) Excavation and Off-site Disposal

  6. ERH Contractor Selection • Guaranteed Fixed Price Remediation • Remediation Objectives • Schedule • Electrical and Water Consumption/Costs • Technical Approach • 3-phase vs. 6-phase • Hydraulic control

  7. Excavation Activities • Stormwater Detention Basin • Drainage Swale • Awning Area • Remediation Objectives • Metals - Type 1 Soil Criteria • SVOCs - NCs • VOCs - NCs

  8. Confirmation Sampling • Clean-up goals met for detention basin, drainage swale, and awning area • ERH in last month of operation, 95% complete • ERH clean-up time: 8-9 months

  9. Post Clean-Up and Buyer Liability • Typically, the buyer is responsible for site investigation, soil cleanup, and the CSR/CAP. • Owner has assumed costs for all of the above to attract prospective buyers. • CSR - Soil RRSs have been met. • CAP – Groundwater clean-up liability remains with the Seller, will let VOCs in GW attenuate • CSR/CAP will be given to buyer for submittal to EPD.

  10. Conclusions • Brownfields clean-up encourages an expedited approach to address site environmental issues. • Seller can provide additional prospective buyer incentives by doing up-front work. • Brownfields approach promotes communication between stakeholders to achieve a common goal.

More Related