Industrial Warehouse
Site Description
The Industrial Warehouse Site is located at 2450 6th Avenue South in Seattle, Washington. The Site is defined by heating oil releases from heating oil underground storage tanks (USTs) to soil and groundwater.
The Site is located in the lower Duwamish industrial area, south of downtown Seattle. The area is completely developed, and dominated by commercial and industrial businesses. The current buildings on the property were constructed between 1951 and 1961, and have been used as warehouses by different businesses for general storage and retail stores.
Cleanup Activites
A free product recovery program was initiated in March 2003 and continued through November 2003. Approximately 300 gallons of free product was removed from the recovery well.
Three USTs were decommissioned in-place in March 2003, and removed in March and April of 2004. Considering the structural integrity of the warehouse building, excavation was limited in extent and contaminated soils were left in the vicinity of the USTs.
The excavation was backfilled with pea gravel to a depth of 4 feet below ground surface. The remainder of the excavation was backfilled with control density fill (CDF). A new concrete slab was later poured over the excavation.
Post-remediation groundwater monitoring was conducted, and results indicated that the plume is likely to be contained within the property.
Regulatory Status
Following remedial activities, Ecology issued a No Further Action (NFA) determination letter on May 31, 2006 through the Voluntary Cleanup Program (VCP). The NFA determination is contingent upon an environmental covenant, which was filed on the property on August 26, 2004.
Voluntary Cleanup Program
This site was cleaned up under our Voluntary Cleanup Program, which provides technical help to owners of contaminated sites.
Voluntary Cleanup Program customers pay fees to cover our costs for technical help and reviewing cleanup reports. Sites in this program must meet the same cleanup standards as the sites Ecology manages under legal orders.
Site use restrictions called institutional controls are in effect
Institutional controls can be fences, signs, or restrictions on how the property is used. For instance, an institutional control may prohibit installing drinking water wells or disturbing a protective cap that isolates contamination. These restrictions keep the contamination contained and keep people from being exposed to the contamination. The controls are usually listed in environmental covenants recorded with the county.
Periodic reviews are required when institutional controls are required at a site. Ecology conducts reviews to make sure the controls remain effective and the cleanup still protects human health and the environment. We conduct periodic reviews about every five years.
Institutional Controls 1
Environmental Covenant
Restrictions/Requirements
- Prevent the Reuse or Relocation of Site Soil
- Restrict All Ground Water Extraction/Well Installation
- Restrict Land Use
Restricted Media
- Groundwater
- Soil
Documents 14
Legal 1
Document Title | Document Date | Document Type |
Industrial Warehouses Restrictive Covenant 20040826001139 | 8/26/2004 | Environmental Covenant; Alternative Mechanism |
Technical Reports 11
Voluntary Cleanup Program 2
Document Title | Document Date | Document Type |
Industrial Warehouse (NW1016) - VCP NFA | 5/31/2006 | VCP Opinion on Site Cleanup – NFA |
Industrial Warehouse - VCP Opinion on Site Cleanup - No Further Action | 9/9/2004 | VCP Opinion on Site Cleanup – NFA |
Places to see print documents
-
Northwest Regional Office15700 Dayton Ave NShoreline, 98133Please schedule an appointment to view print documents at this location.
Contaminants 1
Contaminant Type | Soil |
Groundwater |
Surface Water |
Air |
Sediment |
Bedrock |
---|---|---|---|---|---|---|
Non-Halogenated Organics - Petroleum Products-Unspecified | C | C |
- S
- Suspected
- C
- Confirmed Above Cleanup Levels
- B
- Below Cleanup Levels
- RA
- Remediated-Above
- RB
- Remediated-Below
- R
- Remediated