SWMU 29 – Industrial Area WWTP Sludge Drying Beds

The five sludge drying beds are located in the southern portion of the wastewater treatment plant for the “Industrial Area” of the base. The area to the west is concrete and grass, the area to the north is grass, and the areas to the south and east are grass and open water. The area is utilized on a limited basis due to the minimal amount of flow moving through the plant since the operational closure of Naval Station Roosevelt Roads on March 31, 2004 and the transition of the facility into caretaker status. No visual evidence of releases of hazardous wastes or constituents was observed during the 1988 VSI or 1993 follow-up inspection. The sludges generated by this unit have been tested since 1988 for “Characteristics of Hazardous Waste” pursuant to 40 Code of Federal Regulations (C.F.R.) Part 261, and found not to be hazardous by characteristic. Permitee has verbally indicated it has no knowledge or evidence of systemic and routine releases of hazardous wastes or constituents from this unit.

Status

• A Revised Final Phase I RFI Work Plan was submitted to EPA for approval on October 11, 2006.
• EPA approved the Phase I RFI Work Plan on October 20, 2006.
• The Phase I RFI field work was conducted between November 10 and November 20, 2006.
• The Revised Final Phase I RFI Report was submitted to the EPA on January 25, 2008.
• Based on EPA comments on the Phase I RFI Report, the Navy recognized the need for a full RFI at this site.
• The Draft Full RFI Work Plan for SWMUs 27, 28, and 29 was submitted for EPA review on August 31, 2007.
• EPA approved the Full RFI Work Plan for SWMUs 27, 28, and 29 on January 7, 2008.
• EPA approved the Final Full RCRA Facility Investigation Report (RFI) submitted on August 28, 2008.
• A Draft Corrective Measures Study Work Plan for SWMUs 27, 28, and 29 was submitted to the EPA on December 16, 2010.
• A Final Corrective Measures Study Work Plan for SWMUs 27, 28, and 29 was submitted to the EPA on December 6, 2011.