SA 77 - Fuels Facility Refueling Dock, Small Drum Storage Area RCRA Site

Background
The Small Drum Storage Area was not operated as a permitted RCRA interim-status container storage facility; however, the SDSA was included in the RCRA closure process because of observations made by EPA representatives in 1989. Four drums assumed to contain hazardous wastes were found at the time. The Navy agreed to the EPA's RCRA designation and the SDA was investigated in July 1993 to determine if past activities related to drum storage had left residual contamination that would pose a future risk to Adak residents or that exceeded relevant regulations.

The site was "clean-closed" under RCRA in 1995 (with the institutional controls that restrict the property from future residential land use development) because the data collected during the RCRA closure showed that RCRA-regulated hazardous wastes were not present at the Small Drum Storage Area at concentrations warranting corrective action.

The closure objectives and institutional controls intent is to maintain commercial and industrial land use.

Identified Contaminants
The site was "clean-closed" under RCRA in 1995 (with the institutional controls that restrict the property from future residential land use development) because the data collected during the RCRA closure showed that RCRA-regulated hazardous wastes were not present at the Small Drum Storage Area at concentrations warranting corrective action.

Click here to display the data table.

RCRA Institutional Controls

Equitable Servitude

Groundwater Restrictions
Domestic use of groundwater in the Downtown Area is restricted because of the potential presence of petroleum compounds and other chemicals in the groundwater. Domestic groundwater use is defined as that used by households or transients for human and animal consumption, cooking, bathing, showering, gardening, irrigation, or use on consumable food products, watering animals and any other domestic use. The excavation notification program at individual sites provides one barrier to drilling; enforcement of the prohibition will also occur through periodic visual inspections. The visual inspections will focus on unauthorized wells in the restricted area. Groundwater use restrictions are included in the equitable servitude.

Inspections and Reporting
The ICs identified in this plan will be inspected and reported on an annual basis, or as necessary.

Land Use Restrictions
Outdoor recreational and commercial and industrial land uses for the RCRA Downtown Area sites are allowable under the RCRA closure. Examples of each activity category were provided previously.

Soil Excavation Restrictions
Excavation Notifications are required for all the Downtown Area RCRA sites. The excavation notifications will be required for each proposed excavation below 2 feet at each of the ICs sites. The notifications will be evaluated to determine whether a proposed project at an IC site is consistent with the land use restrictions. The notifications are an additional tool for the Navy to receive timely information (in the absence of local zoning requirements) to monitor land use restrictions.

RCRA Engineering Controls

Engineering controls encompass a variety of engineered remedies to contain or reduce contamination, or physical barriers intended to limit access to property. Engineering controls, as they relate to Adak Island, include fences, signs, caps or barriers, and treatment systems including monitoring wells. The engineering controls identified in the OU A ROD, petroleum cleanup sites, and those that will apply as interim measures to OU B are described below.

Under the OU A ROD signed in 2000, fishing advisory signs were posted for subsistence fishers because of low levels of PCBs detected in bottom fish (rock sole) and shellfish (blue mussels) of Sweeper Cove and Kuluk Bay. The OU A ROD Amendment removes the requirement for fish advisory signs. Instead, the Navy will provide an information pamphlet to the residents of the City of Adak, because they are the most likely people to eat locally caught fish and shellfish as part of a subsistence diet. Fish information pamphlets will be updated as new information is collected and trends are analyzed. Copies of the updated pamphlets will be put in residence mail boxes, and copies will be placed at the City of Adak and U.S. Fish and Wildlife offices. The consumption of rock sole or blue mussels by recreational fishers poses no unacceptable health risks.

Ordnance hazard signs are in place on fencing around the part of the perimeter of the access restricted area adjacent to Lake Andrew. As of the end of the 2002 field season, remediation has been completed on all areas outside the access-restricted area adjacent to Lake Andrew. For this reason, with the exception of the signs at the perimeter of the Lake Andrew area, these signs are no longer required and were removed in 2003. Fences and gates at the access-restricted areas adjacent to Lake Andrew will be retained and maintained until the OU B-2 ROD is executed. Thereafter, ICs and ECs will be subject to the terms of the OU B-2 ROD.

Other Engineering Controls
Other engineering controls/remedies listed in the Comprehensive Monitoring Plan, Revision 1 are listed below.

Excavation and treatment by thermal desorption of contaminated sediments and soils and recycling of treated sediment and soils as cover material at Roberts Landfill;
Placement of a soil cover on one non-landfill site;
Recycling of treated soils from CERCLA sites as cover material at Roberts Landfill;
Monitoring groundwater at CERCLA sites for volatile compounds and semivolatile compounds;
Removal and treatment of petroleum-contaminated soils to meet State of Alaska cleanup requirements;
Monitored natural attenuation of petroleum chemicals in soil and groundwater;
Free-product recovery to the maximum extent practicable as an interim remedial measure, followed by final remediation to achieve cleanup levels under State of Alaska requirements for soils and groundwater; and
Maintenance of an Munitions Awareness educational program for on-island residents and visitors.

swmu 20 survey