The Unity Ground Water Site is located in the Village of Unity and includes the 16 affected private wells that have been sampled and contaminated with chlorinated solvents near or above the Removal Management Levels (RMLs).  Sampling has determined the source of the ground water contamination to be the area currently occupied by the Unity Auto Mart located at 102 North Front Street in Unity, Wisconsin.     
1.1.2.1 Location
The Village of Unity is split by the county line which runs along Front Street (Highway 13).  Part of Unity is in Clark County and part of Unity is in Marathon County (Attachment 1).  The Site is the current contaminated ground water plume as defined by contaminated residential wells, and is bordered to the west by East Washington Street, to the north by Taylor Street, to the east by Russell Street, and to the south by East Wells Street
1..2.2 Description of Threat

A release of hazardous substances is present at the Site due to the presence of chlorinated solvents including PCE, TCE, 1, 2 cis DCE and VC in the soil and the drinking water.  The hazardous substances have migrated from the suspected source and have contaminated the drinking water aquifer that is used by the residents of Unity for their private drinking water source.

1.1.3 Preliminary Removal Assessment/Removal Site Inspection Results

See Final Site Investigation Plan listed in Document Section

2.1.1 Narrative
USEPA, WDNR and Environmental Quality (EERS Contractor) and subcontractors Soils Engineering Inc. (Drilling Contractor), Maher (carbon treatment vendor) and Chets Plumbing, mobilized to the site on November 2, 2015.
2.1.2 Response Actions to Date
Drilling contractor Soils Engineering Inc., began installation of shallow and deep monitoring wells on November 2, 2015 to assess the contamination plume, delineate the geology and groundwater gradients and sample the wells at 8 designated locations within the Village of Unity.  3 Shallow wells were completed and one deep well set in the granite on the week of November 6, 2015

Sampling of the whole house carbon treatment systems was done on November 2 and 3 and samples were sent to the lab for VOC analysis.

Carbon Units were changed out with Maher Water Corp. and a licenced plumber from Chets Plumbing Service on November 4-5 2015.  Nine systems were serviced with new carbon filters and sediment filters were changed, and the water softners were re-set to alarm in one year for the next scheduled change out in 2016.
2.1.3 Enforcement Activities, Identity of Potentially Responsible Parties (PRPs)
See the Final Site Investigation Plan and Enforcement Confidential Section in the Action Memo.
2.1.4 Progress Metrics

2.2.1 Anticipated Activities
Complete Installation of monitoring wells.  Develop wells.  Sample Wells.  Conduct geophysical work on wells using USEPA gamma logger.  Treat and discharge water being generated by drilling and development efforts.  Remove soil from drums and consolidate in roll off box.  Set up soil for disposal
2.2.1.1 Planned Response Activities
Continue installation of monitoring wells.  Sample and log wells.  Sample residential wells in Unity to assess potential movement of the plume.     Treat and discharge water generated by drilling and development efforts.
2.2.1.2 Next Steps
Continue installation of shallow and deep monitoring wells.  Sample residential wells.  Sample carbon treatment systems. Sample Monitoring Wells.  Survey monitoring wells and measure depth to water.  Prepare potentiometric surface maps showing groundwater gradients, and interpret data to determine extent of the ground water plume.

Plan public meeting to inform the community in February of 2016.
2.2.2 Issues

The first Deep well that was installed at EPA 2-D encountered issues with the plug device used on the casing which was set at approximately 55 feet deep.  The aluminum plug at the end of the casing broke free and began to spin and took over 4 hours to remove.  The aluminum filings reacted with the Portland cement in the grout and began to off gas in the drums and around the casing.  A write up and warning will be sent to the manufacturing company of the plug and this technique will not be used on site.

2.5.1 Safety Officer
Health and Safety Plan was signed and is on site.  Tale gate safety meetings are held each morning at 0730.
2.5.2 Liaison Officer
NA
2.5.3 Information Officer

No press officer or press inquirys.

3.1 Unified Command
NA
3.2 Cooperating Agencies

Wisconsin Department of Natural Resources

Village of Unity

3 EERS

1 Maher Water  Corp

3 USEPA

1 WDNR

2 Tetra Tech Starts

1 Chets Plumbing

5 Soils Eng Inc.