Investigation of tritium in groundwater at Site 300

Buddemeier, Robert W.

doi:10.2172/6261397

Cited by 4 publications

(4 citation statements)

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“…Based on a reconnaissance study done in 1981 and 1982, Raber and Carpenter (1983) presented a preliminary analysis of the hydrogeology of Site 300. More recent investigations of occurrences of VOCs, tritium, and HE compounds are discussed in several additional reports, namely ; Carpenter et al, (1983Carpenter et al, ( , 1988; Buddemeier et al (1985Buddemeier et al ( , 1987; Crow et al (1986); Weiss Associates (1988); Toney and Crow (1989); Taffet et al (1989); and several issues of the Site 300 Environmental Investigations Quarterly. Data from these reports were extracted to develop a synthesis of the hydrogeology of Site 300.…”

Section: Hydrogeology Of Site 300mentioning

confidence: 99%

Remedial investigation of the High-Explosives (HE) Process Area, Lawrence Livermore National Laboratory Site 300

Crow¹,

Lamarre²

1990

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Well 20)W-35C.03 W-35C.02 Plate 4. HE Process Area. Map showing facilities, decommissioned lagoons, HE surface Impoundments, monitor wells and exploratow boreholes. __ 1.4.3. Extent of VOCs in Soil and Rock and in Ground Water Low concentrations of VOCs are present in a limited area nem, and south of, Building 815, The VOC detected most often is TCE. TCE was first detected in ground water samples collected during April 1987 (280 ug/L [ppb]). Since then, monitor wells have been drilled that piace partial bounds on the area containing TCE. We are continuing our work to establish a bound on the eastern side of the area. Traces of several other VOCs have also been reported in water samples scattered over several samplings from several monitor wells in the HE Process Area (at concentrations less than federal MCLs), See Chapter 8 for details, 1-7 Chapter 2. Environmental Setting 2.1. Areas Surrounding Site 300 2.1.1. Demography One reason Site 300 was selected as the location for LLNL's high-explosives (HE) testing experiments is because of the sparsely populated surrounding area. Most of the neighboring land owners do not live on their properties. On the basis of residential population, the average density is less than one person per square mile ,around the perimeter of Site 300. 2.1.2. Land Use 2.1.2.1. Present Uses. Figure 2.1.2-1 shows the land use distribution in the vicinity of Site 300. Major users to the south and east include: 1. Carnegie State Vehicle Recreation Area (SVRA), an outdoor recreational facility for private and commercial offroad motorcycle riding, testing, and racing. 2. SRI International, which operates an explosives test site in the hills south of Carnegie SVRA. 3. The Gallo and the Connolly Ranches, used primarily for cattle grazing. _. 4. Physics International, a private firm that operates another explosives test facility adjacent to the northeast side of Site 300. 5. California Department of Fish and Game open land, which curremly has no public access. The California Department of Forestry operates the Castle Rock Fire Station, located on the Connolly property on Corral Hollow Road near the southeast comer of the site. Immediately north of Site 300 lies rangeland owned by the Mulqueeny, Yroz, and Vieira families. To the east are other smaller parcels of rangeland. Several private residences are located along Corral Hollow Road, west of Site 300 and the Carnegie SVRA. Surrounding Site 300 on the west, north, and east are farms and ranches used primarily for cattle grazing. These latter properties are generally characterized by absentee ownership. Permanent residents live on the Connolly Ranch and at the ranger headquarters for the Carnegie SVRA. The Connolly family lives in a house on the ranch property, and the ranger and his family occupy a mobile home located on state property north of Corral Hollow Road. The Castle Rock Fire Station has no permanent residents. The station, used as a staging area for brush and grass fire fighting in the Altamont Hills and the Diablo Range, is fully-manned ...

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Section: Hydrogeology Of Site 300mentioning

confidence: 99%

Remedial investigation of the High-Explosives (HE) Process Area, Lawrence Livermore National Laboratory Site 300

Crow¹,

Lamarre²

1990

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“…Fractures in claystone beds locally convey water (Raber and Carpenter, 1983;Carpenter et al, 1983;Carpenter, 1983;Buddemeier, 1985;. Preliminary aquifer tests on interbedded sand-, silt-, and claystones in the northwest por tion of the site yielded hydraulic conductivity val ues ranging from 5 x 10 ' to 3 K 10 ' cm/s (Buddemeier et al" 1987). Groundwater flow is strongly influenced by geologic structures.…”

Section: Site 300mentioning

confidence: 99%

“…The CRWQCB, Central Valley Region, was notified and an investigation was initiated. Two extensive reports on the progress of this in vestigation have been prepared (Buddemeier, 1985;Buddemeier et al" 1987). The information that follows is summarized from those reports.…”

Section: Tce At Site 300mentioning

confidence: 99%

Environmental monitoring at the Lawrence Livermore National Laboratory: 1986 annual report

Holland¹,

Buddemeier²,

Brekke³

1987

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“…The most direct method of determining the direction of groundwater movement is by measuring the elevation of groundwater at multiple locations over the aerial extent of an aquifer [4]. It is necessary to know the direction of groundwater flow to determine the recharge zones and make sure that human activities in the area do not pose threat to the quality of the groundwater to enable a sustainable use of the resources.…”

Section: Introductionmentioning

confidence: 99%

DELINEATION OF AQUIFEROUS ZONES USING GEOPHYSICAL METHODS AND CONTAMINANT FLOW DIRECTION -A case study of dumpsite at Cassidy, Okokomaiko, LASU-Badagry Expressway, Lagos State, Nigeria

Adegbola

Abidoye

Adaranijo

2020

JRRS

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Introduction: Cassidy area, of Okokomaiko, Ojo, Lagos State, is a rapidly developing area with attendant growing population arising from the presence of University, financial institutions and popularly known Alaba market. Unfortunately, water supply by the water corporation is not readily available. The inhabitants only rely on the surface water and groundwater extracted from hand dug wells and boreholes. Aims: The study is to map the aquiferous zone and establish the groundwater flow direction, with a view to averting subsurface contamination emanated from dumpsite within the area. Materials and Methods: Twenty five (25) Vertical Electrical Sounding (VES) using Schlumberger electrode array, four (4) Electrical Resistivity imaging using Wenner Electrode Array were acquired at four different traverses. Manual groundwater flow direction was also conducted. Results: The identified unconfined aquifer was sand/sandy clay which is overlain by peat/clay soil that is loose and may allow downward migration of the contaminant plumes to deep groundwater. However, the confined aquifer observed to occur approximately at depth 18 m. The electrical resistivity distribution observed decreases upward, south and north. This implies increase in conductivity in such directions and as such indicating the contaminant could be more concentrated near-surface, north and south. Conclusion: The implication of the results obtained with respect to vulnerability to groundwater pollution is that the southern section of the aquifer is more susceptible to receive transported contaminants from the northern part of the study area. The study suggests the potential borehole should be sited in the north-eastern direction with the aid of geophysical survey.

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Investigation of tritium in groundwater at Site 300

Cited by 4 publications

References 1 publication

Remedial investigation of the High-Explosives (HE) Process Area, Lawrence Livermore National Laboratory Site 300

Remedial investigation of the High-Explosives (HE) Process Area, Lawrence Livermore National Laboratory Site 300

Environmental monitoring at the Lawrence Livermore National Laboratory: 1986 annual report

DELINEATION OF AQUIFEROUS ZONES USING GEOPHYSICAL METHODS AND CONTAMINANT FLOW DIRECTION -A case study of dumpsite at Cassidy, Okokomaiko, LASU-Badagry Expressway, Lagos State, Nigeria

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