Bibo Trespass. May 2009. 1. Navajo Abandoned Uranium Mine. Site Screen Report. This form is for use at the site of abandoned uranium mines (AUM) located
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U.S. Environmental Protection Agency Region IX, San Francisco Navajo AUM Project Bibo Trespass May 2009 1 Navajo Abandoned Uranium Mine Site Screen Report This form is for use at the site of abandoned uranium mines (AUM) located on Navajo Nation lands. Applicable sites include all mine and mine features that have or have not undergone reclamation by the Navajo Abandoned Mine Lands Reclamation Program, including features, adits and pits. Applicable sites also include all AUM sites listed in the USEPA CERCLIS database, all sites listed in the 2008 AUM GIS Report issued by USACOE and USEPA, all AUM sites on allotment lands associated with the Navajo Nation, and any and all AUM sites lands not listed in any database located on Navajo lands. Reconnaissan ce of any sites located on lands adjacent to Navajo lands but that are or may be impacting Nava jo lands will need to be coordinated with the authorities appropriate to those lands. The purpose of the form is to ascertain the status and location of the identified AUM site, to record all immediate site information associated with the mine site and to document the recommendation and/or decision on what additional steps, if any, are needed at the site. Bibo Trespass AUM Site Navajo AUM Eastern Region Prepared by: Weston Solutions, Inc. Contract: W91238-06-F-0083 12767.063.496.1111 May 2009
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U.S. Environmental Protection Agency Region IX, San Francisco Navajo AUM Project Bibo Trespass May 2009 2 Part I Site Identification, Location and Status Site Names and ID numbers as applicable Mine ID: 1034 Map ID: E80 CERCLIS: NNN 000 908 698 NAMLRP: NOT ASSIGNED New Mexico Mining and Mineral Division ID: NM0047 New Mexico Bureau of Geology and Mineral Resources: NMMK0081, 0077, 0080 Local name / Aliases: Haystack No. 2, MLB-NM-B-1, Arthur Bibo, Bibo, Bilba Chapter and local area: Baca/Haystack Chapter Lat/Long: 35.3495228711 N / -107.94863969 W Nearby road and highway: Haystack Road (BIA 23), Red Mountain Road (BIA 41) Local Post Office: Prewitt, NM Land Status: check one or more and provide ownership and contact information below Tribal Trust Land Tribal Fee Land Allotment Fee land Public lands Private Bureau of Land Mgmt State Ownership and contact information: The Bibo Trespass mine site property is classified as Public Land Ordinance land.
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U.S. Environmental Protection Agency Region IX, San Francisco Navajo AUM Project Bibo Trespass May 2009 3Part II Site Observations Observed Structures: list number of and describe human habitation status of structures at the following distances from mine: 0 to 200 feet: None 200 feet to 0.25 mile: Observed Public or commercial structure: list and describe all schools, clinics, Chapter Houses, places of business and any other structure used by members of the community at the following distances: 0 to 200 feet: None 200 feet to 0.25 mile: None Levels measured around the perimeter(s) of the identified structure(s): – Observed water sources: list the number and type of wells and surface water sources that are potentially used for human consumption at the following distances from the mine: 0 to 0.25 miles: None 0.25 miles to 4 miles: Windmill well located approximately 2.5 miles northwest of sites Known Site History: include information from interviews with Chapter officials and residents. Note information on mine ownership, period of operation, and type of mining operation. The Bibo Trespass mine consists of an area of 90,147.16 square meters. Any historical information pertaining to mining operations and historical ownership of the mine site appeared to be unclear.
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U.S. Environmental Protection Agency Region IX, San Francisc o Navajo AUM Project Bibo Trespass May 2009 4Part III Type, number and reclamation status of mine features Provide description and reclamation status of a ll mine sites and features at site. Include all waste piles, adits, pits and other features, and indicate whether they are open, closed, covered, capped, buried or unreclaimed. Indicate approximate size, shape and extent, including description of any reclamation caps. Note condition of all reclamation caps. Reclamation status of the mine site is currently unknown. The mine appears to have been reclaimed by dirt covering waste piles. Signs were posted warning of underground radiological hazards. The signs were faded and nearly illegible. No adits or other mine features were observed during the site visit. Part IV Summary of radiological readings Background Locations #1 10.485 cpm Mine site: Bibo Trespass -See Figures 1 and 2 Nearby Structure Perimeter Œ None Describe any other radiological measurements: 1,095 gamma radiation measurements were collected from mine sites, ranging from 6,552 cpm to 89,750 cpm. Measurements were found at their highest along the dirt road transecting the site. The measurements are represented in Figures 1 and 2.
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U.S. Environmental Protection Agency Region IX, San Francisco Navajo AUM Project Bibo Trespass May 2009 5 Part V Site sketch of all mine features and readings, including locations of all structures, sources of drinking water and any other important features and radiological readings. Presented in Figures 1 and 2
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U.S. Environmental Protection Agency Region IX, San Francisc o Navajo AUM Project Bibo Trespass May 2009 6Part VI Response Action Summary Site Name(s): Bibo Trespass Chapter: Baca/Haystack Decision Criteria Is there an unreclaimed waste pile at the site? No At what distance from the waste pile is the nearest residential structure located? At what distances from the waste pile are there potential drinking water sources? N/A Is there a reclamation cap or sealed adit in place at the site? No Is the cap/seal functionally intact ? N/A Is the cap/seal sufficiently degraded to create a concern about relea ses? N/A At what distance from the cap/seal is the nearest domestic structure located? At what dista nce from the cap/seal is the nearest domestic drinking water source? 2.5 miles Summary of emergency response factors Summary hazard ranking system factors None Summary of reclamation factors No known reclamation
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U.S. Environmental Protection Agency Region IX, San Francisc o Navajo AUM Project Bibo Trespass May 2009 8Part VIII Contacts Reports and Information Name Title or official role (if any)Telephone number Information providedName_Stanley Edison _______________________ Title or official role (if any) Navajo EPA Superfund Program Address___PO Box 2946, Window Rock, AZ 86515 Telephone number__(928) 871-6861 _____ Information provided__General Background and Contact/Access Information Name________________________________________________________ Title or official role (if any) ____________________________________ Telephone number____________________________________________ Information provided_________________________________________________________ Name________________________________________________________ Title or official role (if any) ____________________________________ Telephone number____________________________________________ Information provided_________________________________________________________
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Legend Gamma Radiation Measurements < 2X Backgound >2X Background Private Indian Allotment Public Land Ordinance 0400Feet Gamma Radiation Measurements Above Two Times Background Bibo Trespass Baca/Haystack Chapter Navajo Nation, New Mexico Figure 1Bibo Trespass Mine Claim Boundaries Gamma survey conducted in October 2008 measured as counts per minute (cpm) Average background = 10,485 cpm
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Legend Gamma Radiation Measurements 0 – 10,000 10,000 – 15,000 15,000 – 20,000 20,000 – 50,000 50,000 – 100,000 >10 0,0000400Feet Gamma Radiation Measurements Bibo Trespass Baca/Haystack Chapter Navajo Nation, New Mexico Figure 2Bibo Trespass Mine Claim Boundaries Gamma survey conducted in October 2008 measured as counts per minute
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