SWMU 2 - Langley Drive Disposal Area

This site is an abandoned, unlined waste-pile/landfill, on the edges of the mangroves along the shoreline of the Ensenada Honda Bay. This site was used from 1939 to 1959 to dispose of solid and possibly hazardous wastes/constituents. During the IR Round I1 (1986) and Round 2 (1987) investigations, soil, surface water, and sediment samples revealed metals (lead and selenium) in the soil, surface water, and groundwater at this SWMU. An RFI of soil, surface water and sediments, and groundwater was required by the permit.

Status

• Investigations have been completed at the site.
• A Draft RFI report was submitted in March 1998 and comments received in December 1998.
• A revision of the RFI Report and CMS outline followed in April 1999.
• The Final CMS Work Plan was submitted in October 1999. Following response to comments, a Revised Final CMS Work Plan was submitted in March 2000. Following additional comments, a Revised Final II CMS Work Plan was submitted in July 2000.  The CMS was initiated in 2001.
• The Final Additional Data Collection Report and Screening Level Ecological Risk Assessment and Step 3a of the Baseline Ecological Risk Assessment was submitted in May 2006 and approved by the EPA in June 2006.
• The Final Steps 3b and 4 of the Baseline Ecological Risk Assessment was submitted to the EPA on January 10, 2007, and approved February 13, 2007.
• The Site Verification for the Baseline ERA was initiated in February 2007.
• The Baseline ERA field investigation was initiated on May 17, 2007.
• The RCRA 7003 Administrative Order on Consent recommends the implementation of the CMS for the Langley Drive Disposal Area.
• A Draft Phase I Interim Corrective Measures Work Plan was submitted on November 19, 2009.
• The Draft Steps 6 and 7 of the Baseline Ecological Rick Assessment Report for SWMU 2 was submitted on December 4, 2009.
• The EPA commented on the ICM Work Plan and the Draft Final Steps 6 and 7 of the Baseline Ecological Risk Assessment Reports for SWMU 2 on January 28, 2010.
• The ICM for removal of metal debris at SWMU 2 was initiated in January 2010.
• The Draft Final Steps 5, 6, and 7 of the Baseline Ecological Risk Assessment for SWMU 2 was submitted to the EPA on April 7, 2010, and approved by the EPA on May 27, 2010.
• A Draft Corrective Action Objectives for Terrestrial Avian Omnivores and Preliminary Delineation Investigation for SWMUs 1 and 2 on August 13, 2010.
• A Draft Design Package for Interim Corrective Measures was submitted to the EPA on August 13, 2010.
• A Draft Interim Corrective Measures Work Plan for SWMU 2 was submitted to the EPA on August 13, 2010.
• The EPA provided comments on the Draft Design Package and the Corrective Action Objectives for Terrestrial Avian Omnivores and Preliminary Delineation Investigation for SWMUs 1 and 2 on October 14, 2010.
• A Draft Final Corrective Action Objectives for Terrestrial Avian Omnivores and Preliminary Delineation Investigation for SWMUs 1 and 2 on December 16, 2010.
• The Final Design Package for Interim Corrective Measures was submitted to the EPA on January 5, 2011.
• The Final Interim Corrective Measures Work Plan for SWMU 2 was submitted to the EPA on May 6, 2011.