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Title: Corrective Action Decision Document/Closure Report for Corrective Action Unit 485: Cactus Spring Ranch Pu and DU Site, Tonopah Test Range, Nevada

Abstract

This Corrective Action Decision Document/Closure Report (CADD/CR) has been prepared for Corrective Action Unit (CAU) 485: Cactus Spring Ranch Plutonium (Pu) and Depleted Uranium (DU) Site, in accordance with the Federal Facility Agreement and Consent Order. Located at the Cactus Spring Ranch on the Tonopah Test Range, Nevada, CAU 485 consists of Corrective Action Site (CAS) TA-39-001-TAGR. This CADD/CR identifies and rationalizes the U.S. Department of Energy, Nevada Operations Office's recommendation that no corrective action is deemed necessary for CAU 485. The Corrective Action Decision Document and Closure Report have been combined into one report because sample data collected during the preliminary assessment investigation (PAI) performed in January and February 1998 showed no evidence of contamination at the site. In the past, this CAU included holding pens which housed sheep and burros used to test inhalation uptake from atmospheric releases of Pu and DU, and the animals were sacrificed after the tests. Specifically, the investigation focused on data to determine: if surface activities of alpha, beta, and gamma-emitting radionuclides were present; if potential contaminants of concern (COCs) such as Pu and DU were present; and if plutonium was present in the soil and dung at levels significantly above background levels.more » Investigation results concluded that surface radiological activities of alpha, beta, and gamma-emitting radionuclides were within range of typical background levels. Evaluation of process knowledge determined plutonium to be the only potential COC, but soil and dung samples tested were not positive for plutonium-238 and only two samples had positive concentrations of plutonium 239/240 (subsequent plutonium alpha spectroscopy results demonstrated that there was no plutonium contamination in the Cactus Spring surface soil or dung). Therefore, the DOE/NV recommended that no corrective action was required at CAU 485; further, no Corrective Action Plan was required. No use restrictions were required to be placed on this CAU because the investigation showed no evidence of contamination at the site.« less

Authors:
Publication Date:
Research Org.:
International Technologies Corporation, Las Vegas, NV (US)
Sponsoring Org.:
USDOE Nevada Operations Office (US)
OSTI Identifier:
756420
Report Number(s):
DOE/NV-512-Rev.1
TRN: US0003033
DOE Contract Number:  
AC08-97NV13052
Resource Type:
Technical Report
Resource Relation:
Other Information: PBD: 18 Sep 1998
Country of Publication:
United States
Language:
English
Subject:
54 ENVIRONMENTAL SCIENCES; 45 MILITARY TECHNOLOGY, WEAPONRY, AND NATIONAL DEFENSE; NEVADA TEST SITE; REMEDIAL ACTION; PLUTONIUM; DEPLETED URANIUM; MONITORING; SITE CHARACTERIZATION; SOILS; NV; NEVADA; FFACO; DOE/NV; NEVADA OPERATIONS OFFICE; CAU 485; CORRECTIVE ACTION UNIT 485; REMEDIATION; CADD; CR; CORRECTIVE ACTION DECISION DOCUMENT; CLOSURE REPORT

Citation Formats

US Department of Energy Nevada Operations Office. Corrective Action Decision Document/Closure Report for Corrective Action Unit 485: Cactus Spring Ranch Pu and DU Site, Tonopah Test Range, Nevada. United States: N. p., 1998. Web. doi:10.2172/756420.
US Department of Energy Nevada Operations Office. Corrective Action Decision Document/Closure Report for Corrective Action Unit 485: Cactus Spring Ranch Pu and DU Site, Tonopah Test Range, Nevada. United States. https://doi.org/10.2172/756420
US Department of Energy Nevada Operations Office. 1998. "Corrective Action Decision Document/Closure Report for Corrective Action Unit 485: Cactus Spring Ranch Pu and DU Site, Tonopah Test Range, Nevada". United States. https://doi.org/10.2172/756420. https://www.osti.gov/servlets/purl/756420.
@article{osti_756420,
title = {Corrective Action Decision Document/Closure Report for Corrective Action Unit 485: Cactus Spring Ranch Pu and DU Site, Tonopah Test Range, Nevada},
author = {US Department of Energy Nevada Operations Office},
abstractNote = {This Corrective Action Decision Document/Closure Report (CADD/CR) has been prepared for Corrective Action Unit (CAU) 485: Cactus Spring Ranch Plutonium (Pu) and Depleted Uranium (DU) Site, in accordance with the Federal Facility Agreement and Consent Order. Located at the Cactus Spring Ranch on the Tonopah Test Range, Nevada, CAU 485 consists of Corrective Action Site (CAS) TA-39-001-TAGR. This CADD/CR identifies and rationalizes the U.S. Department of Energy, Nevada Operations Office's recommendation that no corrective action is deemed necessary for CAU 485. The Corrective Action Decision Document and Closure Report have been combined into one report because sample data collected during the preliminary assessment investigation (PAI) performed in January and February 1998 showed no evidence of contamination at the site. In the past, this CAU included holding pens which housed sheep and burros used to test inhalation uptake from atmospheric releases of Pu and DU, and the animals were sacrificed after the tests. Specifically, the investigation focused on data to determine: if surface activities of alpha, beta, and gamma-emitting radionuclides were present; if potential contaminants of concern (COCs) such as Pu and DU were present; and if plutonium was present in the soil and dung at levels significantly above background levels. Investigation results concluded that surface radiological activities of alpha, beta, and gamma-emitting radionuclides were within range of typical background levels. Evaluation of process knowledge determined plutonium to be the only potential COC, but soil and dung samples tested were not positive for plutonium-238 and only two samples had positive concentrations of plutonium 239/240 (subsequent plutonium alpha spectroscopy results demonstrated that there was no plutonium contamination in the Cactus Spring surface soil or dung). Therefore, the DOE/NV recommended that no corrective action was required at CAU 485; further, no Corrective Action Plan was required. No use restrictions were required to be placed on this CAU because the investigation showed no evidence of contamination at the site.},
doi = {10.2172/756420},
url = {https://www.osti.gov/biblio/756420}, journal = {},
number = ,
volume = ,
place = {United States},
year = {Fri Sep 18 00:00:00 EDT 1998},
month = {Fri Sep 18 00:00:00 EDT 1998}
}