ARARs requirements

Compliance with applicable, relevant, and appropriate requirements (ARARs)... 

During site characterization, communication is required between the lead and support agencies. The information is mainly on identifying ARARs, and includes a description of the contaminants of concern, the affected media, and any physical features. This information may be supplied by the preliminary site characterization summary or by a letter or other document. 

Compliance with ARARs. It is considered how each alternative will comply with ARARs, or if a waiver is required and how it is justified. 

A classical Hansch approach and an artificial neural networks approach were applied to a training set of 32 substituted phenylpiperazines characterized by their affinity for the 5-HTiA-R and the generic arAR [91]. The study was aimed at evaluating the structural requirements for the 5-HTiA/ai selectivity. Each chemical structure was described by six physicochemical parameters and three indicator variables. As electronic descriptors, the field and resonance constants of Swain and Lupton were used. Furthermore, the vdW volumes were employed as steric parameters. The hydrophobic effects exerted by the ortho- and meta-substituents were measured by using the Hansch 7t-ortho and n-meta constants [91]. The resulting models provided a significant correlation of electronic, steric and hydro-phobic parameters with the biological affinities. Moreover, it was inferred that the... 

The USEPA established a National Remedy Review Board in 1995 to review all remedies. This board has saved an estimated 31 million, and future cost reductions of more than 725 million are expected (USEPA, 1998b). The remedial investigation (RI) will also include identification of "applicable or relevant and appropriate requirements" (ARARs). These are remediation standards, standards of control, or other criteria or limitations developed by federal or state law. Applicable requirements are those that have been previously used at a CERCLA site for the same waste. Relevant and appropriate requirements are those not formerly used for waste at a CERCLA site but which address the problem. Advisories and guidance to be considered can also be issued, but they are not as binding. 

Among the many different types of ARARs are ambient or chemical-specific requirements, which can be levels set by other laws, such as MCLs, National Ambient Air Quality Standards (NAAQS), or CWA, CAA, and TSCA regulations, and the long-term remedial action would have to meet those goals. Because not that many ambient or chemical-specific requirements have been established, other types of ARARs must usually be identified. An alternative is for the USEPA to use carcinogenic potency factors or reference doses to set the proper level of treatment. It must be remembered, though, that each ARAR is specific to the remedial activity and not the pollutant. 

Building Pharmacophore Models Able to Account for the Molecular Features Required to Target the eq Adrenergic Receptor (arAR) and its Subtypes... 

In the early 1990s, states and the Federal government began to realize that the ARARs approach was confusing, contributing to skyrocketing cleanup costs, and that sites were often not achieving required cleanup levels. These factors were... 

The passage of SARA in 1986 resulted in the development of applicable or relevant and appropriate requirements (ARARs), which are used as de facto values for cleanup end points. The ARARs are usually based on other environmental laws, such as the SDWA or the RCRA. 

The NCP contains several criteria that are Intended to guide decisions on the standards to be achieved in Individual remedial actions. Among these the most important are the threshold criteria, which include (1) a general requirement to protect human health and the environment and (2) cleanup standards which have applicable or relevant and appropriate requirements (ARAR). Under the ARAR approach, EPA can use standards from other federal and state statutes (e.g., CWA, SDWA, RCRA) on a case-by-case basis when these requirements are applicable or relevant and appropriate. For example, RCRA land-disposal restorations (LDR) may be relevant and applicable" if a CERCLA remedial action involves RCRA hazardous waste and the waste or its hazardous residue is to be land disposed. In this case, the RCRA LDR standards that are based on the best demonstrated available technology (BDAT) may apply. 

ARARS Screening System to aid in determining requirements that drive the selection of remedial alternatives for Superfund sites (planned). Micro N. Pandit/WESTON D. Greathouse/EPA/RREL 9... 

Selection of response actions that result in the recovery, or maintenance, of healthy local populations/communities of ecological receptors that are (or should be) present at the site furthermore, in support of proper risk management, risk assessors are advised to select assessment endpoints and measures (as defined in ERAGS) that are ecologically relevant to the site and include species that are exposed and sensitive to response to site contaminants, such as explosives. In addition, if individual threatened or endangered (T E) species or critical habitats for such species are present at a site, the Endangered Species Act may be declared an applicable or relevant and appropriate requirement (ARAR) within the ERA of the site. 

Rather than establish individual cleanup standards, CERCLA assures that remedies are based on cleanup standards established by other laws (e.g. CAA, CWA, and RCRA). In conjunction with site-specific risk factors, CERCLA requires that remedies attain any legally applicable or relevant and appropriate requirements (ARARs). ARARs are standards, criteria, or limitations under federal and state environmental laws. For example, if electrokinetic remediation involves the on-site treatment, storage, or disposal of hazardous wastes, the remediation activity must meet RCRA standards for such treatment, storage, and disposal. ARARs relative to electrokinetic remediation include (a) the CERCLA, (b) the RCRA, (c) the CAA, (d) the CWA, (e) the SDWA, and (f) Occupational Safety and Health Administration (OSHA) regulations (ERA SITE Program, 2003). These six general requirements are discussed in the sections that follow. 

TABLE 28.2. Appropriate and Relevant Requirements (ARARs) for Electrokinetic Remediation... 

Regulatory and U.S. Department of Energy Order Compliance—This section briefly describes those promulgated regulations, DOE orders, and consent order agreements between DOE, EPA, and Ecology that are considered applicable or relevant and appropriate requirements (ARAR) to the Hanford Site remediation and cleanup activities. 

Tables 9-1 through 9-4 list potential ARARs based on whether they are contaminant-specific (Table 9-1), action-specific (Table 9-2), location-specific (Table 9-3), or pertain to D D (Table 9-4). The tables are organized by codes to describe both the type of requirement and to what part of the N Reactor closure scope they apply.

The first code grouping, ARAR code, defines the potential ARAR in one of four categories of requirements ... 

ITEM NUMBER CITATION arar CODE REQUIREMENT COMMENT RESOLUTION SCOPE CODE (b o 1 O o c-r (D 3 c-r a o o... 

ITEM NUMBER CITATION ARAR CODE REQUIREMENT COMMENT RESOLUTION SCOPE CODE... 

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