The Jorgensen Forge Outfall Site consists of two outfall pipes, a 24-inch and adjacent 15-inch, buried just south of the current Jorgensen Forge facility’s northern boundary with the adjacent Boeing Plant 2 facility.  Both pipes discharged into the Lower Duwamish Watershed (LDW). The LDW was listed on the National Priority List (“NPL”) in September 2001 (CERCLIS No. WA0002329803).  In 2002, the Washington Department of Ecology (“Ecology”) added the LDW to the Hazardous Site List under Facility Site identification No. 42927743.   
      
1.1.2.1 Location

The Site is located along the northern boundary of the adjacent Jorgensen and Plant 2 facilities.  The street address is 8531 East Marginal Way South, Seattle, Washington, 98108.  The approximate location of the east end of the 24-inch PLSD is 47° 31’37.82” North Latitude; 122° 18’13.59” West Longitude.

The Site and surrounding area are primarily industrial.  The nearest school (Concord Elementary) is approximately 0.75 miles west-southwest.  The closest residences are within a mile are to the west in the South Park neighborhood across the LDW.

1.1.2.2 Description of Threat

Numerous environmental investigations have documented the presence of PCBs in the PLSD pipes which discharge to the LDW.  Total PCBs have been detected at concentrations as high as 10,000 mg/kg in a sample collected from the 24-inch PLSD. Multiple samples exceed both the MTCA cleanup level for industrial soil (10 mg/kg) and EPA Regional Screening Levels for industrial soil and the protection of groundwater (0.74 and 0.0088 mg/kg, respectively, for Aroclor 1254).

1.1.3 Preliminary Removal Assessment/Removal Site Inspection Results

Investigations were conducted by Boeing and Jorgensen at the Jorgensen Forge Outfall Site in February 2011 which included advancing Geoprobe borings along three transects perpendicular to the shoreline to evaluate whether a release of hazardous substances had occurred to subsurface soil beneath the 15-inch and 24-inch pipes located on the Jorgensen Forge Outfall Site. This Investigation was conducted in accordance with the Source Control Action, 15-inch and 24-inch Pipes Cleanout Work Plan dated November 23, 2010 prepared by Floyd Snider (2010) and the U.S. Environmental Protection Agency (EPA) Administrative Order on Consent for Removal Action, CERCLA Docket No. 10-2011-0017 (AOC) entered into by Jorgensen and Boeing.

Further site characterization investigation is necessary to assess the extent of the elevated PCB concentrations encountered during the initial Investigation and to identify and define necessary future cleanup activities in this area.

Scope of work for the geoprobe soil investigation included, 13 geoprobe borings, collection and laboratory analysis of those soil samples.

• Decontamination of equipment

• Dewatering of solids

• Offsite shipment of solids to authorized disposal facility

• Disposal of wash waters

• Demobilization

• Report preparation