896 research outputs found

    Civil and Criminal Enforcement of the Clean Air Act After the 1990 Amendments

    Get PDF
    The Clean Air Act Amendments of 1990 formed one of the most sweeping revisions of any federal environmental statute in recent history. A wide array of technical improvements to existing provisions were joined with entirely new substantive programs aimed at controlling such diverse concerns as the development of new fuels, reduction of acid rain, ozone depletion, and even global warming. Aside from its ambitious substantive programs, however, the 1990 Amendments were driven by a recognition that the existing Clean Air Act had become largely unenforceable. Thus, the Amendments greatly expand the government\u27s enforcement authority, and provide a host of new enforcement options. In this article, the authors discuss these changes to the civil and criminal enforcement provisions of the Act, and examine how these revisions seem to contain a mixture of strengths and weaknesses that raise as many concerns as they do hopes that the new Act will better achieve the goal of protecting and enhancing the quality of the Nation\u27s air

    Embankments Built Over Swamps

    Get PDF
    Time and environmental constraints necessitated the development of unique methods for building earthen embankments over very deep and soft swamp deposits. Three case histories are presented. Construction techniques included alternate strip embankments, use of flexible vertical and horizontal drains, use of wood chips and high strength geotextile and the conventional stage and preloading techniques. In all cases, field instrumentation including pore-pressure/settlement transducers was installed to monitor the fill placement. The monitoring results were fed into a computer to determine the safety factor against shear failure and amount of settlement. The field monitoring results and predicted values agreed very well

    The Role of Citizens Groups in Policy Conflicts

    Get PDF
    Discusses the role of citizens in policy conflict negotiations. Development of a series of disputes in the Southeast Corridor of Denver, Colorado; Inadequacies of formal governmental representation; Homeowner representation

    Policies versus Practices: Transparency of supply chain disclosures among luxury and mass market fashion brands

    Get PDF
    Policies versus Practices: Transparency of supply chain disclosures among luxury and mass market fashion brands Supply chain transparency can be defined as the minimum degree of disclosure to which supply chain policies, practices, agreements and procedures are open for public verification. In 2017, a Fashion Transparency Index rated and ranked 100 of the most affluent global fashion brands according to the level of transparent information they publicly share in five key areas: policies, corporate governance, traceability; audits and remediation; and negative impact reporting. For the 100 global fashion brands included in the index, we analyzed: (1) The amount, typology and comprehensiveness of information that fashion brands publicly disclose; (2) the tendency to disclose information on policies and corporate governance rather than information on areas of supply chain transparency (3) differences in supply chain transparency of public disclosures among luxury and mass market brands. To analyze group differences, we used ordinal effect size measures such as the Hodges-Lehmann median difference and the Probability of Superiority

    Projectile- And Target-charge Dependent Effects In Ionizing Collisions Of H ⁺ And He 2+ With He, Ne And Ar Atoms

    Get PDF
    The spectra of electrons emitted in collisions between H + and He 2+ projectiles and He, Ne and Ar targets at energies of 50 and 100 keV amu -1 have been studied. The data are in qualitative agreement with results of Irby el al., but are in disagreement with measurements of Bernardi et al. It is shown that the observed electron spectra have a dependence on both target-ion and projectile effective charge that can be understood qualitatively in terms of \u27saddle-point\u27 ionization. Several issues relevant to saddle-point ionization are discussed. © 1990 IOP Publishing Ltd
    corecore