Alfys Pizza Container
Cleanup Status
This Site was terminated from the Voluntary Cleanup Program in March 2024. Ecology issued a Further Action letter in April 2023.
Site Location
Site History
The former gasoline station consisted of an auto repair building, a gasoline station building, a pump island, and three underground storage tanks. Two underground storage tanks were removed before November 2021 (one waste oil and one fuel oil). The third underground storage tank (unknown contents) was removed in December 2021.
Information regarding the underground storage tank decommissioning, including tank sizes, and conditions are unknown.
Where Did The Contamination Come From?
Petroleum hydrocarbon contamination in soil and shallow groundwater are from the past operation of a gasoline service station historically located on the Property.
Underground Storage Tank Removal
- One underground storage tank was removed in December 2021.
- 2,000 tons of petroleum-contaminated soil were removed from the Site.
- Soil samples collected from the underground storage tank excavation contained petroleum hydrocarbons above clean up levels.
- The underground storage tank excavation was backfilled with imported fill.
- Contaminated soil remains on the Property in the area of the former underground storage tank.
Post-Underground Storage Tank Removal Groundwater Investigation
In March 2022, the following activities occurred:
- Six groundwater monitoring wells (MW-1 through MW-6) were installed on the Property.
- Soil samples collected from two monitoring wells at approximately 9 feet below the ground surface contained petroleum hydrocarbons just below cleanup levels.
- Groundwater samples collected from two monitoring wells contained petroleum hydrocarbons above cleanup levels.
Contaminants Of Concern
The contaminants of concern discovered on the Property are:
Soil
- Total petroleum hydrocarbons in the gasoline, diesel, and oil ranges (TPH-G, TPH-D, and TPH-O)
- Benzene and total xylenes
- Carcinogenic polycyclic aromatic hydrocarbons (cPAHs)
Groundwater
- Total petroleum hydrocarbons in the gasoline, diesel, and oil ranges (TPH-G, TPH-D, and TPH-O)
- Benzene
- Carcinogenic polycyclic aromatic hydrocarbons (cPAHs)
Documents 6
Technical Reports 2
| Document Title | Document Date | Document Type |
| Alfys Pizza - NW3347 - Excavation and Well Installation Report | 4/8/2022 | Site Specific Technical Document - other |
| Alfys Pizza - NW3347 - Limited Site Assessment Report | 11/24/2021 | Site Specific Technical Document - other |
Voluntary Cleanup Program 4
| Document Title | Document Date | Document Type |
| Alfys Pizza Container-NW3347 VCP Termination Letter | 3/6/2024 | VCP Administrative Document |
| Alfys Pizza Container-NW3347 Request for Information on Status of VCP Project Letter | 1/23/2024 | VCP Administrative Document |
| Alfy's Pizza Container - NW3347 Ecology Site FA Opinion Letter | 4/11/2023 | VCP Opinion on Remedial Investigation |
| Alfy's Pizza Container - NW3347 VCP Acceptance Packet | 2/15/2023 | VCP Administrative Document |
Places to see print documents
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Northwest Regional Office15700 Dayton Ave NShoreline, 98133Please schedule an appointment to view print documents at this location.
Contaminants 6
| Contaminant Type | Soil |
Groundwater |
Surface Water |
Air |
Sediment |
Bedrock |
|---|---|---|---|---|---|---|
| Non-Halogenated Organics - Polycyclic Aromatic Hydrocarbons | C | C | ||||
| Non-Halogenated Organics - Benzene | C | C | ||||
| Non-Halogenated Organics - Other Non-Halogenated Organics | C | |||||
| Non-Halogenated Organics - Petroleum-Diesel | C | C | ||||
| Non-Halogenated Organics - Petroleum-Gasoline | C | C | ||||
| Non-Halogenated Organics - Petroleum-Other | C | C |
- S
- Suspected
- C
- Confirmed Above Cleanup Levels
- B
- Below Cleanup Levels
- RA
- Remediated-Above
- RB
- Remediated-Below
- R
- Remediated