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Title: Title I conceptual design for Pit 6 landfill closure at Lawrence Livermore National Laboratory Site 300

Abstract

The objective of this design project is to evaluate and prepare design and construction documents for a closure cover cap for the Pit 6 Landfill located at Lawrence Livermore National Laboratory Site 300. This submittal constitutes the Title I Design (Conceptual Design) for the closure cover of the Pit 6 Landfill. A Title I Design is generally 30 percent of the design effort. Title H Design takes the design to 100 percent complete. Comments and edits to this Title I Design will be addressed in the Title II design submittal. Contents of this report are as follows: project background; design issues and engineering approach; design drawings; calculation packages; construction specifications outline; and construction quality assurance plan outline.

Authors:
;  [1]
  1. Golder Associates, Inc., Alameda, CA (United States)
Publication Date:
Research Org.:
Lawrence Livermore National Lab., CA (United States)
Sponsoring Org.:
USDOE, Washington, DC (United States)
OSTI Identifier:
466795
Report Number(s):
UCRL-CR-124994-I
ON: DE97052097; TRN: 97:010253
DOE Contract Number:
W-7405-ENG-48
Resource Type:
Technical Report
Resource Relation:
Other Information: PBD: Aug 1996
Country of Publication:
United States
Language:
English
Subject:
05 NUCLEAR FUELS; LAWRENCE LIVERMORE NATIONAL LABORATORY; SANITARY LANDFILLS; COVERINGS; DESIGN; CLOSURES; ENGINEERING; CONSTRUCTION

Citation Formats

MacDonnell, B.A., and Obenauf, K.S. Title I conceptual design for Pit 6 landfill closure at Lawrence Livermore National Laboratory Site 300. United States: N. p., 1996. Web. doi:10.2172/466795.
MacDonnell, B.A., & Obenauf, K.S. Title I conceptual design for Pit 6 landfill closure at Lawrence Livermore National Laboratory Site 300. United States. doi:10.2172/466795.
MacDonnell, B.A., and Obenauf, K.S. Thu . "Title I conceptual design for Pit 6 landfill closure at Lawrence Livermore National Laboratory Site 300". United States. doi:10.2172/466795. https://www.osti.gov/servlets/purl/466795.
@article{osti_466795,
title = {Title I conceptual design for Pit 6 landfill closure at Lawrence Livermore National Laboratory Site 300},
author = {MacDonnell, B.A. and Obenauf, K.S.},
abstractNote = {The objective of this design project is to evaluate and prepare design and construction documents for a closure cover cap for the Pit 6 Landfill located at Lawrence Livermore National Laboratory Site 300. This submittal constitutes the Title I Design (Conceptual Design) for the closure cover of the Pit 6 Landfill. A Title I Design is generally 30 percent of the design effort. Title H Design takes the design to 100 percent complete. Comments and edits to this Title I Design will be addressed in the Title II design submittal. Contents of this report are as follows: project background; design issues and engineering approach; design drawings; calculation packages; construction specifications outline; and construction quality assurance plan outline.},
doi = {10.2172/466795},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Thu Aug 01 00:00:00 EDT 1996},
month = {Thu Aug 01 00:00:00 EDT 1996}
}

Technical Report:

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  • Golder Construction Services, Inc. (GCS), under contract to the Regents of the University of California, Lawrence Livermore National Laboratory (LLNL), provided the construction quality assurance (CQA) observation and testing during the construction of the Site 300, Pit 6 landfill closure cover. The cap construction was performed as a CERCLA non-time-critical removal action from June 2 to August 29, 1997. the project site is located 18 miles east of Livermore on Tesla Road and approximately 10 miles southwest of Tracy on Corral Hollow Road in San Joaquin County, California. This report certifies that the LLNL, Site 300, Pit 6, Landfill Closuremore » was constructed in accordance with the construction specifications and design drawings. This report documents construction activities and CQA monitoring and testing for construction of the Pit 6 Landfill Closure. Golder Associates, Inc. of Oakland, California was the design engineering firm responsible for preparation of the drawings and specifications. CQA services were provided by GCS, of Roseville, California, under supervision of a California registered civil Engineer.« less
  • Geologic studies at LLNL Site 300, conducted in support of ongoing environmental assessments of closed landfill Pit 6, have revealed the presence of a fault strand showing evidence of repeated movements during late Pleistocene and Holocene time. These studies included airphoto interpretation, geologic mapping, and logging of four exploratory trenches and other exposures. These studies traced the fault from west of Pit 6 to southeast of the pit, a distance of about 1500 ft, and suggest the presence of faulting beyond the limits of the area studied. The identified fault strand is not coincident with any previously mapped fault butmore » occurs within a band of highly deformed Tertiary rocks that is generally bounded by the Carnegie Fault on the north and the Corral Hollow Fault on the south. The existence of a fault showing Holocene movement within the larger Corral Hollow-Carnegie Fault Zone suggests that this fault zone should be considered potentially active and could be a source of future strong earthquake ground motion. Regressions relating the parameters of total fault length, segment length, and fault plane area suggest that the Corral Hollow-Carnegie Fault Zone may be capable of generating an earthquake in the range of M{sub s} = 6.3 to 7.1. Effects of a future strong earthquake upon closed Pit 6 are expected to be slight since the identified Holocene trace passes at least 100 ft south of the outer limits of the pit area. However, the effects of strong ground shaking from a local source upon buildings, slopes, and other structures within LLNL Site 300 should receive further consideration. 53 refs., 12 figs., 2 tabs.« less
  • This report documents our investigation of the geology and hydrogeology beneath inactive landfill Pit 8 at Lawrence Livermore National Laboratory Site 300. Site 300 is located about 15 miles east of Livermore, California, in rugged, rural terrain on the east side of the Altamont Hills; this remote facility is used for the testing of explosives and materials to support LLNL's national defense programs. Landfill Pit 8 is located in San Joaquin County in the northeastern portion of Site 300. Since August 1987, trichloroethylene (TCE) has been detected in ground water from one well to a maximum of 6 {mu}g/L. Groundmore » water from a second well has contained lower concentrations of TCE since the last quarter of 1988. We began this investigation in mid-1988 to determine the extent and sources of TCE at the landfill site and to define local hydrogeology. This report presents the results and conclusions of the investigation. 17 refs., 6 figs., 2 tabs.« less
  • This report documents our investigation of the geology and hydrogeology beneath inactive landfill Pit 9 at Lawrence Livermore National Laboratory (LLNL) Site 300. Site 300 is located about 15 miles east of Livermore, California, in rugged, rural terrain on the east side of the Altamont Hills; this remote facility is used for explosives and materials testing to support LLNL's national defense programs. The landfill is located in San Joaquin County near the center of Site 300. In mid-1988, we began this investigation to determine if ground water quality had been degraded by wastes within the pit. This report presents ourmore » results and conclusions. Pit 9 contains potentially hazardous waste generated during explosives experiments. We have assessed the potential impact of landfill Pit 9 vadose zone and ground water chemistry. We have studied the geology and ground water flow characteristics at the Pit 9 site. Ground water flow direction, gradient, and velocities have been determined by well installation and monitoring hydraulic testing. 20 refs., 8 figs., 4 tabs.« less
  • A hydrogeologic investigation was conducted at Lawrence Livermore National Laboratory (LLNL) Site 300, Pit 6 to define the hydrogeologic conditions in the shallow aquifer system beneath the Pit 6 inactive landfill and to assess the adequacy of the groundwater monitoring network at the site. Results of the aquifer tests indicate that impermeable claystone strata present beneath the site on the south side of the Carnegie Fault act as a barrier to groundwater flow through the bedrock strata. However, the alluvium overlying the bedrock does provide an avenue for groundwater flow downgradient beneath the site. North of the Carnegie Fault, groundwatermore » is present primarily in the fractured sandstone bedrock. South of the fault, groundwater flow occurs primarily in the alluvial deposits that overly the impermeable claystone bedrock. The direction of groundwater movement beneath the site is toward the south and southeast at a gradient of about 0.011 to 0.024 feet per foot. Laboratory analyses of groundwater samples collected during this investigation did not detect the presence of any chemical constituents that might be present in the groundwater if wastes buried in the Pit 6 landfill were leaking downward into the shallow aquifer system. These analyses, along with those collected during previous investigations, indicate that groundwater quality in the shallow aquifer system has not been adversely affected by the materials buried in the disposal trenches at the site. Continued groundwater monitoring in the vicinity of Pit 6 should be conducted to detect potential leakage from the disposal trenches.« less