Mizukami Project
Site Background
Approximately 57 tons of contaminated soil were removed and treated offsite. After follow up investigations showed further petroleum-related contamination in groundwater, Ecology required regular groundwater monitoring. After three consecutive rounds of groundwater test results showed no contamination, we determined that no further cleanup actions were necessary.
Since a small area of soil that was near a sensitive utility in a city right of way was not removed, some contamination remains on site. An environmental covenant, which restricts land use, was recorded for the site in 2012.
Periodic 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 All Ground Water Extraction/Well Installation
Restricted Media
- Groundwater
- Soil
Documents 12
Legal 1
| Document Title | Document Date | Document Type |
| Mizukami-Gensco Site Restrictive Covenant | 6/8/2012 | Environmental Covenant; Alternative Mechanism |
Technical Reports 9
| Document Title | Document Date | Document Type |
| Mizukami Project GWM Discontinuation and MW's Decommissioning Approval Letter | 5/4/2021 | Site Specific Administrative Document - Other (Administrative Correspondence) |
| Mizujkami Project - Groundwater Monitoring Sampling Event & Termination | 6/16/2020 | Monitoring Report |
| Mizukami Project Second Periodic Review | 12/6/2017 | Periodic Review (5 Year) |
| Periodic Review Report - Final | 11/27/2017 | Periodic Review (5 Year) |
| Mizukami/GENSCO - Groundwater Report | 3/3/2017 | Monitoring Report |
| Mizukami Project - SW1137 - Re: Environmental Covenant | 5/24/2012 | Site Specific Administrative Document - Other (Administrative Correspondence) |
| Mizukami Project-Groundwater Monitoring Report-September 2011 | 11/2/2011 | Monitoring Report |
| Mizukami Project-Groundwater Monitoring Report & FS/DCA | 7/1/2011 | Remedial Investigation / Feasibility Study Report |
| March 2011 Groundwater Monitoring Report | 6/1/2011 | Monitoring Report |
Voluntary Cleanup Program 2
| Document Title | Document Date | Document Type |
| Mizukami Project SW1137 - VCP NFA | 8/9/2012 | VCP Opinion on Site Cleanup – NFA |
| VCP Mizukami Project - Opinion on Property Cleanup - Further Action | 11/6/2008 | Voluntary Cleanup Program Opinion – Other |
Places to see print documents
-
Southwest Regional Office300 Desmond Dr SELacey, 98503-1274Please 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 | RB | B |
- S
- Suspected
- C
- Confirmed Above Cleanup Levels
- B
- Below Cleanup Levels
- RA
- Remediated-Above
- RB
- Remediated-Below
- R
- Remediated