Zip Trip 25
Cleanup Complete
The Zip Trip 25 (now doing business as Nom Nom) is a gas station and convenience store that's been in business since 1979. Three 10,000-gallon underground storage tanks (USTs) (one regular gasoline, one mid-grade gasoline, and one premium gasoline) are used to dispense fuel.
Ecology found a leak in a line to one of the fuel dispensers during an inspection in February 2008. That April, soil samples were taken by cutting the asphalt and using a hand auger. The investigation showed petroleum-contaminated soil as deep as 16 feet underground in limited areas around the underground storage tanks. However, from 16-20 feet, petroleum was not found. In August, at Ecology's request, more soil samples were collected from 12-14 feet and 14-16 feet underground. Those samples did not contain petroleum at levels requiring cleanup.
After the extent of contamination was defined by completing soil sampling, we issued a no further action letter stating cleanup was complete because the contaminated soil was capped with asphalt and groundwater wasn’t affected. Excavating the contaminated soil would have required the tanks to be removed. However, because of the remaining contamination, Ecology filed an environmental covenant for the property to prevent activities that would expose humans and the environment to remaining contamination and warn future owners of its presence.
Post-Cleanup Reviews
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
- Prohibit Soil Disturbance
- Restrict Land Use
Restricted Media
- Soil
Documents 5
Legal 1
| Document Title | Document Date | Document Type |
| Zip Trip 25 Environmental Covenant | 6/2/2009 | Environmental Covenant; Alternative Mechanism |
Public Information 1
| Document Title | Document Date | Document Type |
| Zip Trip #25 Responsiveness Summary for Periodic Review 2015 | 5/5/2015 | Responsiveness Summary |
Technical Reports 2
| Document Title | Document Date | Document Type |
| Second Periodic Review: Zip Trip 25 | 9/23/2021 | Periodic Review (5 Year) |
| Zip Trip #25 Periodic Review | 4/2/2015 | Periodic Review (5 Year) |
Voluntary Cleanup Program 1
| Document Title | Document Date | Document Type |
| Zip Trip 25 VCP NFA letter | 6/23/2009 | VCP Opinion on Site Cleanup – NFA |
Places to see print documents
-
Eastern Regional OfficeN 4601 Monroe StSpokane, 99205-1265Please 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-Gasoline | R |
- S
- Suspected
- C
- Confirmed Above Cleanup Levels
- B
- Below Cleanup Levels
- RA
- Remediated-Above
- RB
- Remediated-Below
- R
- Remediated