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Congaree River Sediment Site - Administrative Record

The documents listed below serve as DHEC's Administrative Record for the assessment and cleanup alternatives evaluated for the Congaree River sediments and soils. These documents include investigation activities, sampling results, work plans, and cost analyses. This information is also available for review at the main branch of the Richland County Public Library located at 1431 Assembly Street, Columbia, SC 29201. Interested persons are encouraged to review these documents to learn more about this site.

Date Title Description
January 2013 Final Engineering Evaluation/
Cost Analysis (EE/CA)
Summary of cleanup options evaluated by DHEC.
March 2012 Project Delineation Report Summary of all 5 phases of assessment and discussion of results.
September 2011 Phase IV Delineation Preliminary Findings Assessment Report for Phase 5 Proposed Activities.
August 2011 Phase III Delineation Preliminary Findings Assessment Report for Phase 4 Proposed Activities.
June 2011 Phase II Delineation Summary Assessment Report for Phase 3 Proposed Activities.
December 2010 Phase I Delineation Summary Assessment Report for Phase 2 Proposed Activities.
September 2010 Delineation Work Plan Initial Assessment Work Plan to collect sediment samples in the Congaree River.
August 2002 Voluntary Cleanup Contract Agreement between DHEC and South Carolina Electric & Gas for additional assessment and/or remediation at the site of the former Huger Street Manufactured Gas Plant (MGP)