[PLEASE NOTE: The information presented below is offered for educational purposes only. Source: U.S. Environmental Protection Agency.]
South Carolina Superfund Site: Parris Island Marine Corps Recruit Depot
Parris Island Marine Corps Recruit Depot
This site is a Federal Facility.
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Parris Island Marine Corps Recruit Depot
EPA ID: SC6170022762
Location: Port Royal, Beaufort County, SC
Congressional District: 02
NPL Status: Proposed: 08/23/94; Final 12/16/94
Cleanup Progress: Study Underway/Non-time Critical Removal Action Implementation
Federal Facility Agreement (FFA) negotiations commenced in 1996. The FFA was finalized in 2005. During portions of the FFA negotiations, and Post-ROD Authority disputes between EPA and DOD, no RODs were signed. However, remediation efforts went forward to the degree possible, ensuring that public participation opportunities were available and comments/concerns were addressed. Now that disputes are settled and the FFA in effect, ROD signature is anticipated for all pending RODs. Actions impacted by this are as follows: MCRD has completed an RI Report and an FS Report for Site 2. A No Action ROD is expected for Site 2 in 2006. The RI Report and FS Report for Site 1 are completed. A Proposed Plan has been completed and a ROD is expected in 2006. The Remedial Action has been implemented.
An RI and an FS for Site 12 have been completed. A Proposed Plan was completed in 2005. Fieldwork at Site 12 will begin late in 2005, along with ROD signature. Site 12 is Jericho Island, a barrier island of about 25 acres in size. The island was previously owned by a private citizen, who utilized the island as an unofficial residential waste disposal area. The USMCRD had to purchase the island in order to meet arc requirements for their rifle range training area. MCRD is now remediating the waste which was disposed of, via excavation and off-site disposal. Cleanup levels are set such that the result will be unrestricted use. The excavation areas will be restored to match adjacent healthy ecosystems.
Site 45 is a reportable spill of tetrachloroethylene (PCE), which occurred at the dry cleaners in March, 1994, when a storage tank was inadvertently overfilled, spilling PCE into a concrete containment basin. PCE was released to the ground when the containment basin was drained following heavy rains. Base personnel excavated much of the PCE-saturated soil. Subsequent sampling detected limited soil contamination. However, total concentrations of chlorinated solvents in groundwater (including PCE and others) exceeded 1 ppm in two distinct plumes, located 7' and 14' BGS. Based on this information, the decision was made to conduct a non-time critical removal action. The goal of this action is to control groundwater contamination in excess of MCLs by preventing further migration of the groundwater contaminant plume and treating excessively contaminated groundwater at the center of the plume. The Navy completed an engineering evaluation/interim removal work plan (EE/IRWP) which concluded that a groundwater pump and treat system was the best remedial technology for this interim action. The EE/IRWP was public noticed in October 1997 and finalized in December 1997. Implementation of the removal action began in Spring 1998. The Pump and Treat system experienced problems with build-up, which required the system to be repeatedly shut down for cleaning. Each time, the period of satisfactory performance got shorter and shorter, until the decision was made to discontinue the pump and treat remediation. Additional data indicated that the plume had migrated beyond the original bounds. The site is now being evaluated under an extensive Remedial Investigation, to fully delineate the current location of the plume, and to prepare for a feasibility study to evaluate other remedial alternatives. Now, in 2005, a treatability study is being planned to look at the effectiveness of Emulsified Zero Valent Iron injections at the source areas of the plume. The RI for Site 45 has been completed and additional data gaps for Site 45 were filled in 2004 and 2005. The final RI, and treatability study results are anticipated in FY06.
A Five Year Review was approved in September 2005. The review found that two issues exist, which require follow-up actions. The two issues are, 1) Inadequate Land Use Controls (LUC), and 2) Subsidence at Landfills. Actions recommended to address these issues can be found in the report, and will be further negotiated and documented in future CERCLA documents, such as LUC Remedial Designs, Long-term Monitoring Plans, etc. The next Five Year Review will be conducted in 2010, and every five years after that, for as long as wastes which exceed acceptable exposure levels remains on-site.
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