The safety assessment for rotary mode core sampling was developed using certain bounding assumptions, however, those assumptions were not verified for each of the existing or potential flammable gas tanks. Therefore, a Flammable Gas/Rotary Mode Core Sampling Approved Checklist has been completed for tank 241-TX-113 prior to sampling operations. This transmittal documents the dispositions of the checklist items from the safety assessment.

This report provides an overview of FY1999 budget request for the Department of Housing and Urban Development (HUD).

None

This report is about the rivers designated as American Heritage Rivers by President Clinton.

This report discusses the American Heritage Rivers Initiative, implemented in 1998 by President Bill Clinton. The Initiative designed 14 rivers as "American Heritage Rivers," and declared that each "will receive help over the next five years tapping federal resources to carry out their plans for revitalizing their rivers and riverfronts." This report also discusses the reactions from both supporters and detractors of the initiative, and related legislation and appropriations.

The purpose of this Workbook is to provide a screening-level method for prioritizing petroleum exploration and production sites for remediation that is based on readily available information, but which does not require a full characterization of the sites being evaluated. The process draws heavily from the Canadian National Classification System for Contaminated Sites, and fits into the framework for ecological risk assessment provided in guidance from the US Environmental Protection Agency. Using this approach, scoring guidelines are provided for a number of Evaluation Factors relating to: (1) the contaminants present at the site; (2) the potential exposure pathways for these contaminants; and (3) the potential receptors of those contaminants. The process therefore incorporates a risk-based corrective action (RBCA) framework to estimate the relative threat posed by a site to human health and to ecological systems. Physical (non-toxic) disturbance factors have also been incorporated into the process. It should also be noted that the process described in this Workbook has not yet been field tested at petroleum E and P sites. The first logical step in the field testing of this process is to apply the method at a small number of sites to assess the availability of the information that …

Covariation analysis of sets of aligned sequences of protein molecules is successful in certain instances in elucidating certain structural and functional links, but in general, pairs of sites displaying highly covarying mutations in protein sequences do not necessarily correspond to sites that are spatially close in the protein structure. In contrast, covariation analysis of sets of aligned sequences for RNA molecules is relatively successful in elucidating RNA secondary structure, as well as some aspects of tertiary structure. The goals of this paper are to (1) present the problem, (2) develop the mathematical formalism for solving the problem, and (3) validate the resulting algorithms on simulated data. Extensive application to biological sequences will be presented elsewhere.

This report provides an overview of FY1999 budget request for the Department of Housing and Urban Development (HUD). Initially, the report is limited to the Administration’s budget request for HUD. The report is updated periodically as legislative action occurs on FY1999 appropriations for HUD and as action occurs on authorizing legislation to implement the budget proposals.