Inaug.-diss.--Leipzig. / Lebenslauf. "Verzeichnis des quellenmaterials": p. [87]-91.

Because cisterns are exposed to the environment via their direct attachment to catchment surfaces, cistern water quality is often poor. In the U.S. Virgin Islands cisterns are involved in supplying the water needs for private homes, hotels, businesses and public housing, making them subject to the mandates of the Federal Safe Drinking Water Act. This study compares the results of the occurrence of various water quality indicators in Private Residential, Public Housing, and Hotels and Guest House cisterns in the U.S. Virgin Islands in a side-by-side analysis. Forty-seven separate independent variables were created and tested for correlation, of which only the rate at which chlorination was applied was significant. A high degree of correlation was found to exist between total and fecal coliforms. A moderate, but still significant correlation between the coliform and the heterotrophic levels in the cistern was also noted. There was no correlation between any of the bacterial indicators studied and the opportunistic pathogen Pseudomonas aeruginosa. The results show, depending upon on the type and amount of chlorination received, different bacterial indicators will predominate and that there is a logical succession from one to the next with chlorination. On the unchlorinated end of the scale, normally associated with privateresidential homes, there is a correlation between the heterotrophic bacteria and total coliform. On the other end where chlorination is constant, normally associated with public water supply systems, correlation is between total coliform and fecal coliform. The proportion at which these indicators occur is a function of the diligence at which chlorination takes place. Regression analysis showed that the heterotrophs and total coliforms were the most sensitive to chlorination while the streptococci and fecal coliform were the most resistant. Thus, what is seen is fecal coliform unmasking based upon chlorination pattern. Depending upon whether the cistern is a private or public water supply which is mandated to be treated, an appropriate indicator system based upon the likelihood of treatment can be suggested. For unchlorinated private residential home cisterns the prime indicator should be the heterotrophic plate count and for chlorinated systems the take-action organism should be the fecal coliform. P. aeruginosa should be tested for in both domestic cistern water supplies and public cistern water supply systems.

No description available.

Call number: LD2668 .T4 1979 E38 / Master of Landscape Architecture

CHDS State/Local / The VI is under-prepared for major natural disasters and terrorism. Many emergency plans are incomplete, based on inaccurate information, wrongly optimistic and assume an infrastructure that does not exist. The VI is at risk to a direct terrorist attack and also subject to whatever secondary consequences result from a stateside attack, because virtually one hundred percent of food, fuel, medicine, and oil used to make electricity and potable water - and tourists, the economy's lifeblood -- are imported. Also, (1) geographically, help is not readily available from any neighboring city or state; (2) the VI's first responders are likely to be affected by the same disaster they are responding to and unable to assist; (3) the VI must assume more of the emergency preparedness functions that would typically be shared between neighboring communities; (4) the VI must have more funding than similar communities on the mainland; and (5) preparedness planning must include the importing of mainland resources. The purpose of this thesis is to point out how the VI is different from the mainland U.S. This thesis documents vulnerabilities and shows how the Government's existing infrastructure is inadequate. Included is discussion of how the police, social issues, and existing VI Government leadership affect the vulnerabilities. It examines existing preparedness plans. One chapter discusses how management can harm Homeland Security while another chapter deals with change and proposes a Terrorism and Natural Disasters Planning Group. Lastly is an Action Plan listing things that can be done immediately. / Assistant Attorney General / Chief of Asset Forfeiture, Virgin Islands Department of Justice