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Property Details for Roundhole Parcel


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Profile Information

Private
241836
N/A Grass Valley, CA 95945
7.13
009-690-037-000
39.223443528851845 / -121.02673172950746
3
Byous, Eric
Byous.Eric@epa.gov
415-972-3531


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Property Location



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Property Progress


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CAs Associated with this Property

CA NameCA #StateTypeAnnouncement Year
City of Grass ValleyBF99T62701CAAssessment2017


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Assessment Activities at this Property

ActivityEPA FundingStart DateCompletion DateCAAccomplishment Counted?Counted When?
Phase I Environmental Assessment$4,850.2906/19/201808/07/2018City of Grass ValleyYFY20
Phase II Environmental Assessment$3,654.2906/19/201808/07/2018City of Grass ValleyN


Is Cleanup Necessary? Yes
EPA Assessment Funding: $8,504.58
Leveraged Funding:
Total Funding: $8,504.58


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Climate Adaption and Mitigation - Planning or Assessment

There is no data for Climate Adaption and Mitigation - Planning or Assessment.


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Contaminants and Media


Arsenic
Asbestos
Nickel (Ni)
Other Metals
NOT Cleaned up
NOT Cleaned up
NOT Cleaned up
NOT Cleaned up
Soil
NOT Cleaned up


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Cleanup Activities

There are no current cleanup activities.


Cleanup/Treatment Implemented:
Cleanup/Treatement Categories:
Addl Cleanup/Treatment info:
Address of Data Source:
Total ACRES Cleaned Up: 7.13
Number of Cleanup Jobs Leveraged:
EPA Cleanup Funding:
Leveraged Funding:
Cost Share Funding:
Total Funding:


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Climate Adaption and Mitigation - Demolition or Cleanup

There is no data for Climate Adaption and Mitigation - Demolition or Cleanup.


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Institutional and Engineering Controls



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Redevelopment and Other Leveraged Accomplishments

There are no current redevelopment activities.


Number of Redevelopment Jobs Leveraged:
Actual Acreage of Greenspace Created:
Leveraged Funding:


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Climate Adaption and Mitigation - Redevelopment

There is no data for Climate Adaption and Mitigation – Redevelopment


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Additional Property Attributes

The Phase I and II ESAs were performed concurrently. The assessment identified elevated metals concentrations and naturally occurring asbestos in mine waste rock. Waste rock and ore materials associated with lode gold mining commonly contain naturally elevated levels of heavy metals and metalloids. No evidence of ore processing was observed at the property, and no gold-bearing ore was observed at the ground surface.

Former Use: The property is located to the southwest of the intersection of Idaho Maryland Road and Brunswick Road. The property is currently undeveloped and vacant. Historical records identify the Roundhole Shaft portal on the subject property. The vertical shaft was used primarily to access deep underground workings associated with the historical Idaho Maryland Mine. Mine waste rock is present on the property. There has also been evidence of unauthorized transient camping within the property, and several trails and unpaved roads traverse the property.
Hazardous


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Release 3.0.2