SWMUs 18 and 19, White Alice Landfill CERCLA Landfill Site
Background
The White Alice Landfill is a combination of SWMU 18, the South Sector Drum Disposal Area, and SWMU 19, Quarry Metal Disposal Area, which received wastes from 1980 to 1985. The White Alice Landfill received construction wastes in the 1990s. No information is available on the history of any contaminant releases. This landfill was covered with soil and closed according to Alaska solid waste regulations in 1998.
Identified Contaminants
Petroleum hydrocarbons in soil and groundwater
Current Actions
The Navy conducts groundwater monitoring at two wells and surface water monitoring at three locations annually.
Landfill Institutional Controls
ICs at the landfills complement previous actions taken, such as installation of groundwater monitoring systems, and the placement of soil cover. The ICs will minimize potential human exposure to site chemicals by implementing land use restrictions and imposing restrictions on soil excavations.
To ensure the integrity of the landfill covers, containment, and monitoring systems currently in place, the future landowner(s) and/or user(s) will be prohibited from performing activities that will disturb the soil cover or monitoring systems or impact the drainage and erosion controls developed to protect the soil cover.
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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.
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Inspections and Reporting
The ICs identified in this plan will be inspected and reported on an annual basis, or as necessary. Signs will be inspected for wear and tear, and replaced as necessary. The annual reports will assess the need for more or less inspection requirements, as well as determine whether the ICs in place are effective. The annual reporting requirements will be included in CERCLA 5-year reviews.
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Land Use Restrictions
The landfills may be used for recreational use or any other activity that does not adversely impact the integrity of the landfill covers, containment, or monitoring systems. Examples of acceptable recreational uses include hiking, bird watching, hunting, nature watching, or any other short-term, non-intrusive activity.
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Soil Excavation Restrictions
Landfill excavation by non-Navy personnel is absolutely prohibited. Excavation for the purpose of digging a domestic groundwater use well is also prohibited. Recreational land uses that add additional cover (e.g. ball fields, golf course) may be permissible. Navy personnel will be allowed to excavate for the purposes of repairing caps, etc.
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Landfills Engineering Controls
The following engineering control, as stipulated in the OU A ROD, is required at landfill sites.
Sign and Soil Cover Maintenance
Signs and soil cover are in place at the landfills. The signs and soil cover will be inspected annually, or as necessary, to ensure that the signs are legible, and that the soil cover remains in place.
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