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Title: 1958-2006 Precipitation Climatology for Lawrence Livermore National Laboratory Livermore Site and Site 300

Abstract

This report contains rainfall climatology and analyses during the period from 1958 to 2006 for the two sites of Lawrence Livermore National Laboratory: the Livermore site and Site 300. The measurement sites are described, a regional climatology overview is provided, and the effect of topography on regional precipitation is discussed. Rainfall statistics are presented including monthly normals (30-year means) and medians; percentages of time that rainfall is less than or equal to specified amounts for given months, years, and seasons; and mean, median, and maximum numbers of days of precipitation for specified amounts by month, year, and season. The rainfall pattern is demonstrated to be typical of Mediterranean climates, with most rain falling during the cold season. Nearly 80% of seasonal rainfall occurs during November through March, with the average annual rainfall equaling 13.62 and 10.64 inches at the Livermore site and Site 300, respectively. Precipitation frequency and extreme value analyses for durations ranging from 15 minutes to 24 hours, month, and rainfall season are shown in order to estimate rainfall amounts for return periods of two to 100 years at both sites. This analysis determined 100-year return periods for largest 24-hour rainfalls of 2.49 and 2.22 inches at themore » Livermore site and Site 300, respectively. Historical analysis of seasonal rainfall data indicates that the wettest rainfall seasons at both sites typically occurred during strong El Ninos.« less

Authors:
Publication Date:
Research Org.:
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
902306
Report Number(s):
UCRL-TR-228582
TRN: US200717%%531
DOE Contract Number:
W-7405-ENG-48
Resource Type:
Technical Report
Country of Publication:
United States
Language:
English
Subject:
54 ENVIRONMENTAL SCIENCES; CLIMATES; LAWRENCE LIVERMORE NATIONAL LABORATORY; PRECIPITATION; RAIN; SEASONS; SOUTHERN OSCILLATION; STATISTICS; TOPOGRAPHY

Citation Formats

Bowen, B M. 1958-2006 Precipitation Climatology for Lawrence Livermore National Laboratory Livermore Site and Site 300. United States: N. p., 2006. Web. doi:10.2172/902306.
Bowen, B M. 1958-2006 Precipitation Climatology for Lawrence Livermore National Laboratory Livermore Site and Site 300. United States. doi:10.2172/902306.
Bowen, B M. Tue . "1958-2006 Precipitation Climatology for Lawrence Livermore National Laboratory Livermore Site and Site 300". United States. doi:10.2172/902306. https://www.osti.gov/servlets/purl/902306.
@article{osti_902306,
title = {1958-2006 Precipitation Climatology for Lawrence Livermore National Laboratory Livermore Site and Site 300},
author = {Bowen, B M},
abstractNote = {This report contains rainfall climatology and analyses during the period from 1958 to 2006 for the two sites of Lawrence Livermore National Laboratory: the Livermore site and Site 300. The measurement sites are described, a regional climatology overview is provided, and the effect of topography on regional precipitation is discussed. Rainfall statistics are presented including monthly normals (30-year means) and medians; percentages of time that rainfall is less than or equal to specified amounts for given months, years, and seasons; and mean, median, and maximum numbers of days of precipitation for specified amounts by month, year, and season. The rainfall pattern is demonstrated to be typical of Mediterranean climates, with most rain falling during the cold season. Nearly 80% of seasonal rainfall occurs during November through March, with the average annual rainfall equaling 13.62 and 10.64 inches at the Livermore site and Site 300, respectively. Precipitation frequency and extreme value analyses for durations ranging from 15 minutes to 24 hours, month, and rainfall season are shown in order to estimate rainfall amounts for return periods of two to 100 years at both sites. This analysis determined 100-year return periods for largest 24-hour rainfalls of 2.49 and 2.22 inches at the Livermore site and Site 300, respectively. Historical analysis of seasonal rainfall data indicates that the wettest rainfall seasons at both sites typically occurred during strong El Ninos.},
doi = {10.2172/902306},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue Dec 19 00:00:00 EST 2006},
month = {Tue Dec 19 00:00:00 EST 2006}
}

Technical Report:

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  • This report examines the historic potential of two properties of the US Department of Energy's Lawrence Livermore National Laboratory (LLNL): the facility itself and a known historic archeological site, CA-SJO-173H, the Carnegie town site, contained within LLNL Site 300 in San Joaquin County, California. The history and development of LLNL is presented in Section 3 of the report, while Section 4 is devoted to the Carnegie historic site. Section 5 discusses aspects of the LLNL Livermore Site, as well as the Carnegie town site, in relation to the criteria for eligibility to the National Register of Historic Places contained inmore » 36 CFR 60.4. Preliminary evaluations of National Register eligibility are presented. The recommendations contained in Section 6 define an appropriate avenue to permit the Department of Energy to consult with the State Historic Preservation Office, culminating in Determinations of Eligibility and Effect, if necessary, for the properties in question.« less
  • This report examines the historic potential of two properties of the US Department of Energy`s Lawrence Livermore National Laboratory (LLNL): the facility itself and a known historic archeological site, CA-SJO-173H, the Carnegie town site, contained within LLNL Site 300 in San Joaquin County, California. The history and development of LLNL is presented in Section 3 of the report, while Section 4 is devoted to the Carnegie historic site. Section 5 discusses aspects of the LLNL Livermore Site, as well as the Carnegie town site, in relation to the criteria for eligibility to the National Register of Historic Places contained inmore » 36 CFR 60.4. Preliminary evaluations of National Register eligibility are presented. The recommendations contained in Section 6 define an appropriate avenue to permit the Department of Energy to consult with the State Historic Preservation Office, culminating in Determinations of Eligibility and Effect, if necessary, for the properties in question.« less
  • Lawrence Livermore National Laboratory operated two Class II surface impoundments that stored wastewater that was discharged from a number of buildings located on the Site 300 Facility (Site 300). The wastewater was the by-product of explosives processing. Reduction in the volume of water discharged from these buildings over the past several years significantly reduced the wastewater storage needs. In addition, the impoundments were constructed in 1984, and the high-density polyethylene (HDPE) geomembrane liners were nearing the end of their service life. The purpose of this project was to clean close the surface impoundments and provide new wastewater storage using abovemore » ground storage tanks at six locations. The tanks were installed and put into service prior to closure of the impoundments. This Clean Closure Report (Closure Report) complies with State Water Resources Control Board (SWRCB) Section 21400 of the California Code of Regulations Title 27 (27 CCR section 21400). As required by these regulations and guidance, this Closure Report provides the following information: (1) a brief site description; (2) the regulatory requirements relevant to clean closure of the impoundments; (3) the closure procedures; and (4) the findings and documentation of clean closure.« less
  • This report presents the results of a site inspection performed at a disposal site located approximately 150 ft southwest of Building 823 at Lawrence Livermore National Laboratory (LLNL) Site 300. LLNL is operated for the US Department of Energy by the University of California. The major programs at LLNL have been devoted to the design and testing of nuclear weapons and to magnetic fusion research. Since 1952, LLNL has added other major programs, including applied laser fusion research, laser isotope separation, biomedical and environmental studies, and applied energy technologies. Operations at Site 300 began in 1955. Major programmatic operations atmore » Site 300 include hydrodynamic testing of non-nuclear explosive assemblies, including diagnostic tests; physical, environmental, and dynamic tests; and high explosives (HE) formulation and fabrication. In addition, particle beam research has been conducted at Site 300. Topics include stratigraphy, structure, hydrogeology, and analytical results. 11 refs., 3 figs., 3 tabs.« less