Site Specific Study

Site-specific studies will have to be done with reservoir sand, reservoir oil, and field water to determine the suitability of each design. 

The basis for the above design criteria may have been developed from a site specific study, from commonly used criteria, or from historical data. f... 

A site specific study is the most comprehensive approach. Site specific studies to identify and quantify explosion hazards are usually conducted by the owner s process safety specialist or by specialty consultants. There are several steps which need to be taken, each of which may be done in a variety of ways. The steps are outlined below with some of the available methods. More detailed information is available in CCPS Building Guidelines and API RJ -752. 

NCRP, Recommended Screening Limits for Contaminated Surface Soil and Review of Factors Relevant to Site-Specific Studies, Report 129, National Council on Radiation Protection and Measurements, Bethesda, MD, 1999. 

An overview of typical reaction rate constants found in literature is given in Table 1. The large range in reported rates prevents these rate constants being extrapolated to any particular biodegradation situation, so that only a site-specific study can yield reliable kinetic information. Parameters or conditions influencing biodegradation rates are ... 

A Toxicity Reduction Evaluation (TRE) is a site-specific study designed to... 

A general geologic analysis of the entire region under study is essential to the development of a rational approach to site prioritization. Such a broad-based analysis also serves as the frame of reference for site specific studies during the later phases of the project. 

Accurate predictions of the transport of As in groundwater requires site specific data to model adsorption/desorption reactions. In complex mixtures of minerals, it may not be possible to quantify the adsorption properties of individual minerals. Therefore, it has been suggested that adsorption properties of composite materials should be characterized as a whole (Davis and Kent, 1990). Previously published data for adsorption by pure mineral phases such as the surface complexation database for adsorption by ferrihydrite (Dzombak and Morel, 1990) can be a useful starting point for modeling adsorption of solutes in groundwater however, these equilibrium constants may not reflect the adsorption properties of composite oxide coatings on aquifer solids. For example, incorporation of Si, and to a lesser extent, A1 into Fe oxyhydroxides has been shown to decrease adsorption reactivity towards anions (Ainsworth et al., 1989 Anderson and Benjamin, 1990 Anderson et al, 1985). Therefore, equilibrium constants will likely need to be modified for site-specific studies. 

Robinson C, Kirkham J, Percival R, Shore RC, Bonass WA, Brookes SJ, Kusa L, Nakagaki H, Kato K, Nattress B A method for the quantitative site-specific study of the biochemistry within dental plaque biofilms formed in vivo. Caries Res 1997 31 194-200. 

Berardini, M., Mackay, W., and Loechler, E.L. (1997) A site-specific study of a plasmid containing single nitrogen mustard interstrand cross-link evidence for a second, recombination-independent pathway for the DNA repair of interstrand cross-links. Biochemistry, 36, 3506-3513. 

Stratified samples are also amenable to radiocarbon analysis and can potentially provide better average turnover times for particular climatic/soil-texture conditions than site-specific studies, using any of the available methodologies (e.g.. Bird et al, 1996 Trumbore, 1993 Harrison et al, 1995). C results for the 63- to 500-jum fraction for the stratified Canadian samples discussed above are provided in Fig. 8. Again, the apparent turnover times for carbon in this size fraction increases with decreasing temperature and precipitation in keeping with expectations based on discussion in preceding sections. 

Multi-City, Multi-County and Site-Specific Studies... 

Site investigations consist of a combination of an overall recormaissance study of an area and one or more site-specific studies. Reconnaissance site investigations usually cover a wide area, t5qjically ranging from tens to hundreds of square kilometers to support planning and feasibility studies. By contrast, site-specific studies are made on a particular location. The purpose of this type of study is to produce the data required for final design. 

Based on the above, select a principal candidate site for further site-specific studies Source Richards, A.F. et al.. Ocean Eng., 3,189-206,1976. Reprinted with permission of Pergamon Press. 

A Site Specific Study on Evaluation of Design Ground Motion Parameters... 

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