Pacific Northwest Laboratory (PNL) and Westinghouse Hanford Company (Westinghouse Hanford) are collaborating on a field study of the effects of gravel admixtures on plant growth and soil water storage in protective barriers. Protective barriers are engineered earthern covers designed to prevent water, plants, and animals from contacting buried waste and transporting contaminants to groundwater or the land surface. Some of the proposed designs include gravel admixtures or gravel mulches on the barrier surface to control soil loss by wind and runoff. The purpose of this study is to measure, in a field setting, the influence of surface gravel additions on soil water storage and plant cover. The study plots are located northwest of the Yakima Gate in the McGee Ranch old field. Here we report the status of work completed in FY 1989 on the creation of a data management system, a test of water application uniformity, field calibration of neutron moisture gages, and an analysis of the response of plants to various combinations of gravel admixtures and increased rainfall. 23 refs., 11 figs., 6 tabs.

This report discusses: The Davis Diverted Tokamak; Particle Simulation of Transport in Fusion Devices; Astrophysical Plasmas; Statistical Dynamics of Multi-Field Models for Plasma; Large Scale Density Modifications Induced in the Ionosphere; Studies of the Ion Acoustic Decay Instability; and Computer Simulation of Ionospheric Radio Frequency Heating.

First part of an annual report of the Texas Railroad Commission's Oil and Gas Division providing background on the industry and the agency's activities, information related to the production of oil and gas, and data regarding production by field.

Second part of an annual report from the Texas Railroad Commission's Oil and Gas Division providing information and data, organized by district, related to gas well gas production and hydrocarbon liquids recovered on leases.

Annual report of the Railroad Commission of Texas Transportation/Gas Utilities Division describing goals and activities, as well as information about about the gas utility industry during fiscal year 1989, with statistics for 1988.

Annual report of the Gulf States Marine Fisheries Commission describing goals, activities, and accomplishments during fiscal year 1989.