Practical Methods for Meeting Remediation Goals at Hazardous Waste Sites

Risk-based cleanup goals or preliminary remediation goals (PRGs) are established at hazardous waste sites when contaminant concentrations in air, soil, surface water, or groundwater exceed specified acceptable risk levels. When derived in accordance with the Environmental Protection Agency's risk assessment guidance, the PRG is intended to represent the average contaminant concentration within an exposure unit area that is left on the site following remediation. The PRG, however, frequently has been used inconsistently at Superfund sites with a number of remediation decisions using the PRG as a not-to-exceed concentration (NTEC). Such misapplications could result in overly conservative and unnecessarily costly remedial actions. The PRG should be applied in remedial actions in the same manner in which it was generated. Statistical methods, such as Bower's Confidence Response Goal, and mathematical methods such as "iterative removal of hot spots," are available to assist in the development of NTECs that ensure the average postremediation contaminant concentration is at or below the PRG. These NTECs can provide the risk manager with a more practical cleanup goal. In addition, an acute PRG can be developed to ensure that contaminant concentrations left on-site following remediation are not so high as to pose an acute or short-term health risk if excessive exposure to small areas of the site should occur. A case study demonstrates cost savings of five to ten times associated with the more scientifically sound use of the PRG as a postremediation site average, and development of a separate NTEC and acute PRG based on the methods referenced in this article.     

The Significance of Community to Business Social Responsibility1

Abstract In this paper, I focus attention on one aspect of business social responsibility, the relationship between businesses and community. Specifically, I explore the impact of business operators' perceptions about norms of collective action in their communities on the level of their support for and commitment to their communities. This relationship was elaborated using data from interviews with 1,008 business owners and managers randomly selected from 30 small Iowa communities (500 to 10,000 in population). Findings indicate the majority of small business operators report that they are committed to and provide support for their community. Also, it is concluded that operators' educational levels and lengths of residence, the success and age of their businesses, and their perceptions of community levels of collective action are significantly associated with levels of business social responsibility.     

Accountability to Welfare Service Users: Challenges and Responses of Service Providers

Influenced by the consumerist sentiment in New Public Management,the last decades have witnessed a revival of the call for accountabilityto service users in the public service sector. As an act ofaccountability, social care and health care professionals areincreasingly obliged to involve their service users in the serviceplanning and monitoring process. Despite the popularity of thisaccountability and user involvement rhetoric, critics have,however, been skeptical of the prevailing user involvement initiativesas an effective measure of accountability to service users (Barnes and Wistow, 1994a,1994b; Bowl, 1996; Peck et al., 2002; Rea, 2004). Based on astudy of user involvement in the welfare sector of Hong Kong,this paper argues that the discourse of accountability to theservice users can be a source of unrest for welfare professionals,in the manifestation of accountability as a power relationship.Their ensuing response is to accommodate the ensuing challengearising from the demand for accountability to service usersby manoeuvring the accountability discourse. It is the contentionof this paper that the institutional inclusion of welfare serviceusers into a discursive space is a necessary but not sufficientcondition for the realization of a mandate of accountabilityto welfare service users.     

An EM Algorithm for Smoothing the Self-consistent Estimator of Survival Functions with Interval-censored Data

Interval-censored data arise in a wide variety of application and research areas such as, for example, AIDS studies (Kim et al ., 1993) and cancer research (Finkelstein, 1986; Becker & Melbye, 1991). Peto (1973) proposed a Newton–Raphson algorithm for obtaining a generalized maximum likelihood estimate (GMLE) of the survival function with interval-cen sored observations. Turnbull (1976) proposed a self-consistent algorithm for interval-censored data and obtained the same GMLE. Groeneboom & Wellner (1992) used the convex minorant algorithm for constructing an estimator of the survival function with "case 2" interval-censored data. However, as is known, the GMLE is not uniquely defined on the interval [0, ∞]. In addition, Turnbull's algorithm leads to a self-consistent equation which is not in the form of an integral equation. Large sample properties of the GMLE have not been previously examined because of, we believe, among other things, the lack of such an integral equation. In this paper, we present an EM algorithm for constructing a GMLE on [0, ∞]. The GMLE is expressed as a solution of an integral equation. More recently, with the help of this integral equation, Yu et al . (1997a, b) have shown that the GMLE is consistent and asymptotically normally distributed. An application of the proposed GMLE is presented     

The role of the gerontological social worker in assisted living

This qualitative study reports on thirteen assisted living (AL) administrators' perspectives of the role and the importance of the AL social worker in addressing the unmet needs of older adults as they move and transition into AL. Participant interviews were analyzed using the constant comparative method. Administrators described 5 AL social work roles: (a) decision-making and adjustment coordinator; (b) resident advocate; (c) mental health assessor and counselor; (d) family social worker; and (e) care planner. Implications include directly examining AL social workers' views, analyzing costs and benefits of employing AL social workers, and developing social work practicum sites within AL.     

Warehouses or Welfare?: Legislative Dispositions for Alcoholics

Skid row alcoholic offenders and the various legislative responses to this social problem are examined. Recent United States case law is discussed in the context of sociological explanations of societal intervention against this group. The validity of the medical model of alcoholism as a basis for planning social policy in respect of alcoholic offenders is questioned. Traditional justifications for civil commitment programmes are rejected as an infringement of civil liberty and human dignity. The effectiveness of criminal sanction on a cost benefit basis is analysed. Finally,. alternative policies are discussed and recommendations are made as to possible long-term solutions.     

Palliative sedation: an essential place for clinical excellence

The complexities that converge around palliative sedation invite clinicians to work together to differentiate the issues and come to recommendations and decisions that are humane, ethical, legal, and clinically sound. Whether a crisis or long-term situation exists, the work is essentially the same. It must include critical thinking, clinical expertise, multidimensional assessment, and an array of interventions to assist patients and families in situations where symptoms and suffering are sufficiently intense to warrant exploration of sedation. The many issues inherent in the discussion of sedation at end of life require not that we have the answers but rather that we work with our colleagues to raise relevant questions and integrate both expertise and compassion into end-of-life decisions and care.