SWMU 77– Arms Range and OB/OD areas at Punta Medio Mundo

SWMU 77 is an active and historic small arms range (SAR) and former open burning/open detonation (OB/OD) area located at the northeast side of NAPR, on the peninsula at Punta Medio Mundo. Range locations have periodically moved throughout the peninsula since its first use. Review of historic records and interviews indicate that the SWMU was used for munitions disposal or detonation and as a small arms range.

Status

• The RCRA 7003 Administrative Order on Consent recommends a Phase I RFI for SWMU 77.
• EPA suggested modifications to the Finding of Suitability to Transfer (FOST) for SWMU 77 Small Arms Range.
• A Phase I RCRA Facility Investigation Work Plan will be submitted after cessation of usage of the small arms range for SWMU 77.
• The Navy requested an extension for the submittal of the Phase I RFI for SWMU 77.
• The Draft Sampling and Analysis Plan was submitted November 6, 2009.
• The Navy notified NAPR on November 9, 2009 to terminate use of the SAR, including the pistol range, beginning 1 January 2010.
• EPA commented on the Draft Sampling and Analysis Plan on January 22, 2010 and a Final Phase I RFI Sampling and Analysis Report was submitted to the EPA on March 22, 2010.
• Received PREQB Technical Review and Response to Comments on the Final Phase I RFI Sampling and Analysis Plan on May 17, 2010.
• EPA Commented on the on Final Phase I Sampling and Analysis Plan for SWMU 77 May 27, 2010.
• EPA provided comments on July 26, 2010.
• A Draft Phase I RFI Report for SWMU 77 was submitted to the EPA on November 27, 2010.
• The Final Phase I RFI Report was submitted to the EPA on April 28, 2011. EPA approved this report on July 28, 2011./li>