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Title: LLNL 10(a)(1)(A) Annual Report (TE-053672-2)--2006

Abstract

This report summarizes research related to Lawrence Livermore National Laboratory's (LLNL) Experimental Test Site, Site 300 (S300), located within Alameda and San Joaquin Counties (Figure 1) and conducted under the 10(a)(1)(A) (Recovery) permit TE-053672-2. The U.S. Department of Energy/National Nuclear Security Administration (NNSA) holds this property in ownership. The 2006 recovery research at S300 involved fieldwork associated with two species: the California whipsnake (Masticophis lateralis) (MALA) and the California red-legged frog (Rana aurora draytonii) (CRLF). A research project (Biological Opinion 1-1-02-F-0064) investigating the direct effects (fatality/harm) and indirect impacts (habitat alteration) of prescribed burning of coastal sage scrub on MALA was permitted by the U.S. Fish and Wildlife Service (Service), Sacramento Office, in the Spring of 2002. Several different public resource management agencies were approved by the Service to implement recovery-oriented (fuels treatment) studies associated with this research plan. LLNL's proposed seven-year study was initiated in 2002 and is anticipated to conclude in 2008. Results reflected in this report apply to information gathered during the first five years of the project; because of the low MALA sample size collected onsite and the unforeseen wildland fire that burned both of the study sites in 2005, long term conservation-related measures for MALAmore » are not yet evident from study analyses. The CRLF research (Biological Opinion 1-1-02-F-0062) involved translocating individuals from two wetland locations that had received artificial (potable) water discharges for the last 15-20 years. CRLF's that occupied the wetland sites were moved to an enhanced wetland area further downstream (engineered pools in a pre-existing perennial drainage) in an area called ''Mid-Elk Ravine''. The aboveground, potable water flows were terminated once all CRLF translocations had been completed (Summer of 2006).« less

Authors:
Publication Date:
Research Org.:
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
900871
Report Number(s):
UCRL-TR-227623
TRN: US200711%%733
DOE Contract Number:
W-7405-ENG-48
Resource Type:
Technical Report
Country of Publication:
United States
Language:
English
Subject:
54 ENVIRONMENTAL SCIENCES; CALIFORNIA; DRAINAGE; DRINKING WATER; FROGS; HABITAT; LAWRENCE LIVERMORE NATIONAL LABORATORY; OWNERSHIP; RESOURCE MANAGEMENT; SECURITY; US FWS; WATER; WETLANDS

Citation Formats

Woollett, J. LLNL 10(a)(1)(A) Annual Report (TE-053672-2)--2006. United States: N. p., 2007. Web. doi:10.2172/900871.
Woollett, J. LLNL 10(a)(1)(A) Annual Report (TE-053672-2)--2006. United States. doi:10.2172/900871.
Woollett, J. Wed . "LLNL 10(a)(1)(A) Annual Report (TE-053672-2)--2006". United States. doi:10.2172/900871. https://www.osti.gov/servlets/purl/900871.
@article{osti_900871,
title = {LLNL 10(a)(1)(A) Annual Report (TE-053672-2)--2006},
author = {Woollett, J},
abstractNote = {This report summarizes research related to Lawrence Livermore National Laboratory's (LLNL) Experimental Test Site, Site 300 (S300), located within Alameda and San Joaquin Counties (Figure 1) and conducted under the 10(a)(1)(A) (Recovery) permit TE-053672-2. The U.S. Department of Energy/National Nuclear Security Administration (NNSA) holds this property in ownership. The 2006 recovery research at S300 involved fieldwork associated with two species: the California whipsnake (Masticophis lateralis) (MALA) and the California red-legged frog (Rana aurora draytonii) (CRLF). A research project (Biological Opinion 1-1-02-F-0064) investigating the direct effects (fatality/harm) and indirect impacts (habitat alteration) of prescribed burning of coastal sage scrub on MALA was permitted by the U.S. Fish and Wildlife Service (Service), Sacramento Office, in the Spring of 2002. Several different public resource management agencies were approved by the Service to implement recovery-oriented (fuels treatment) studies associated with this research plan. LLNL's proposed seven-year study was initiated in 2002 and is anticipated to conclude in 2008. Results reflected in this report apply to information gathered during the first five years of the project; because of the low MALA sample size collected onsite and the unforeseen wildland fire that burned both of the study sites in 2005, long term conservation-related measures for MALA are not yet evident from study analyses. The CRLF research (Biological Opinion 1-1-02-F-0062) involved translocating individuals from two wetland locations that had received artificial (potable) water discharges for the last 15-20 years. CRLF's that occupied the wetland sites were moved to an enhanced wetland area further downstream (engineered pools in a pre-existing perennial drainage) in an area called ''Mid-Elk Ravine''. The aboveground, potable water flows were terminated once all CRLF translocations had been completed (Summer of 2006).},
doi = {10.2172/900871},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Wed Jan 31 00:00:00 EST 2007},
month = {Wed Jan 31 00:00:00 EST 2007}
}

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  • This report summarizes research related to Lawrence Livermore National Laboratory's (LLNL) Experimental Test Site, Site 300 (S300), located within Alameda and San Joaquin Counties (Figure 1) and conducted under the 10(a)(1)(A) (Recovery) permit TE-053672-2. This property is held in ownership by the U.S. Department of Energy/National Nuclear Security Administration (NNSA). The 2005 Recovery research at S300 involved fieldwork associated with only two species: Alameda whipsnake (Masticophis lateralis euryxanthus) and the California red-legged frog (Rana aurora draytonii) (RLF). Note: the whipsnake subspecies existing at S300 shows taxonomic variation (generally 50% chaparral whipsnake [Masticophis lateralis] traits) when compared to the Alameda whipsnakemore » (Riemer 1954) and therefore it will be referred to as ''California whipsnake (Masticophis lateralis)'' (CWS) for classification purposes in this report (Swaim 2004).« less
  • NESHAPs limits the emission of radionuclides to the ambient air from DOE facilities to levels resulting in an annual effective dose equivalent (EDE) of 10 mrem (100 {micro}Sv) to any member of the public. The EDEs for the Lawrence Livermore National Laboratory (LLNL) site-wide maximally exposed members of the public from operations in 2006 are summarized here. Livermore site: 0.0045 mrem (0.045 {micro}Sv) (36% from point source emissions, 64% from diffuse source emissions). The point source emissions include gaseous tritium modeled as tritiated water vapor as directed by the U.S. Environmental Protection Agency (EPA) Region IX; the resulting dose ismore » used for compliance purposes. Site 300: 0.016 mrem (0.16 {micro}Sv) (87.5% from point source emissions, 12.5% from diffuse source emissions). The EDEs were calculated using the EPA-approved CAP88-PC air dispersion/dose-assessment model, except for doses for two diffuse sources that were estimated using measured radionuclide concentrations and dose coefficients. Specific inputs to CAP88-PC for the modeled sources included site-specific meteorological data and source emissions data, the latter variously based on continuous stack effluent monitoring data, stack flow or other release-rate information, ambient air monitoring data, and facility knowledge.« less
  • This report provides a status of the progress made in Fiscal Year 2006 on tasks identified in the Waste Area Group 10, Operable Unit 10-08, Remedial Investigation/Feasibility Study Work Plan. Major accomplishments include: (1) groundwater sampling and review of the groundwater monitoring data, (2) installation of a Sitewide groundwater-level monitoring network, (3) update of the Groundwater Monitoring and Field Sampling Plan of Operable Unit 10-08, (4) re-evaluation of the risk at Site TSF-08, (5) progress on the Operable Unit 10-08 Sitewide Groundwater Model.
  • It is planned to use the tritium dose model, DCART (Doses from Chronic Atmospheric Releases of Tritium), to reconstruct dose to the hypothetical maximally exposed individual from annual routine releases of tritiated water (HTO) and tritiated hydrogen gas (HT) from all Lawrence Livermore National Laboratory (LLNL) facilities and from the Sandia National (SNL) Laboratory's Tritium Research Laboratory over the last fifty years. DCART has been described in Part 1 of ''Historical Doses From Tritiated Water And Tritiated Hydrogen Gas Released To The Atmosphere from Lawrence Livermore National Laboratory (LLNL)'' (UCRL-TR-205083). This report (Part 2) summarizes information about annual routine releasesmore » of tritium from LLNL (and SNL) since 1953. Historical records were used to derive facility-specific annual data (e.g., source terms, dilution factors, ambient air concentrations, meteorological data, including absolute humidity and rainfall, etc.) and their associated uncertainty distributions. These data will be used as input to DCART to calculate annual dose for each year of LLNL operations. Sources of information are carefully referenced, and assumptions are documented. Confidence on all data post-1974 is quite high. Prior to that, further adjustment to the estimated uncertainty may have to be made if more information comes to light.« less
  • Historical information about tritium released routinely and accidentally from all Livermore Site Lawrence Livermore National Laboratory (LLNL) facilities and from the Tritium Research Laboratory of Sandia National Laboratories/California (SNL/CA) between 1953 through 2005 has been compiled and summarized in this report. Facility-specific data (annual release rates and dilution factors) have been derived from the historical information. These facility-specific data are needed to calculate annual doses to a hypothetical site-wide maximally exposed individual from routine releases of tritiated water (HTO) and tritiated hydrogen gas (HT) to the atmosphere. Doses can also be calculated from observed air tritium concentrations, and mean annualmore » values for one air tritium sampling location are presented. Other historical data relevant to a dose reconstruction (e.g., meteorological data, including absolute humidity and rainfall) are also presented. Sources of information are carefully referenced, and assumptions are documented. Uncertainty distributions have been estimated for all parameter values. Confidence in data post-1974 is high.« less