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BLM land shaded in gray
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Nearly 13,000 mine properties in California and northwest Nevada are listed in the Bureau of Mines Mineral Industries Location System (MILS) database as on land managed by BLM-California. An estimated additional 5,000 sites not recorded in the database are likely on BLM land. Of these 18,000, an estimated 3,000 significant properties contain hazardous substances or physical features and/or have environmental problems.
No comprehensive AML inventory has been conducted on any RA in the state and six RA's have no recorded inventory of mine sites.
The CA State Office, from mid-2000, has been conducting watershed-based projects that have and will continue to identify mine sites with environmental and/or safety issues.
To date about 40 "high priority" sites have been identified, and more than 2,000 sites have been added to the Abandoned Mine Moduel/Site Cleanup Moduel (AMMSCM).
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