Thesis (D. Min.)--Gordon-Conwell Theological Seminary, 2005. / Abstract and vita. Includes bibliographical references (leaves 170-177).

Thesis (D. Min.)--Gordon-Conwell Theological Seminary, 2005. / Abstract and vita. Includes bibliographical references (leaves 170-177).

The western part of the border between Mexico and the United States consists of two primary regions, Tijuana-San Diego and Mexicali-Calexico (Imperial Valley). Over the last fifteen years Mexicali has been one of the fastest-growing cities in Mexico in terms of industrial development, job creation, and energy demand, thus resulting in increased air pollution and environmental degradation. This air pollution has thus been linked to high rates of asthma and respiratory diseases on both sides of the border. This thesis focuses on pollutant formation and pollutant interactions between the three regions of the Mexicali-Imperial Valley (MC), Tijuana-San Diego (TS), and Los Angeles (LA) areas. The MODELS-3 modeling approach is used for analyzing the formation of secondary species, and transport of both primary and secondary pollutants between the regions during three pollution episodes in July 2001, August 2001, and January 2002. Area and mobile sources are identified as primary pollutant emitters in MC and TS regions. Source contribution from within the region and from other regions is conducted using CMAQ/ DDM. During the summer episode, O3 plumes originating from TS are transported eastwards along the border region towards MC. O3 plumes generated from precursors emitted by LA mobile sources are transported towards MC and add up to 10 ppbv in the MC region. O3 plumes reach the border regions of California-Arizona and O3 concentrations up to 4 ppbv in the Grand Canyon area can be attributed to area sources in the MC region. Contribution of up to 11 ppbv of O3 in Calexico-Mexicali can be attributed to the high density of vehicles in and around the San Diego region. During the winter episode, the winds being southeasterly (towards southeast) plumes from TS, LA and Las Vegas unite and move towards the MC region with impacts of 10-35 μg m-3. The soil dust contributions from LA, TS and MC range between 5-25 μg m-3. MC area sources contribute a maximum of 34 μg m-3 PM2.5.

From the Proceedings of the 1974 Meetings of the Arizona Section - American Water Resources Assn. and the Hydrology Section - Arizona Academy of Science - April 19-20, 1974, Flagstaff, Arizona / A summary is given of interrelated, technical and institutional events concerning the Colorado River which took place between the United States and Mexico from 1849 to 1974 with emphasis on the 1961-1974 period. Until the treaty of 1944, Mexico had had no guarantee of a specific annual quantity of water, but in the years after 1945, when a guarantee of 1.5 million acre-feet per year was established, more than that amount was available for use. Salinity problems arose, and in 1965 an agreement for a 5-year plan for alleviating the technical and political difficulties surrounding the salinity question was made. In 1973 it was agreed that the United States would build, within approximately 5 years, a facility for desalting the saline drainage water entering Mexico. Fulfillment of the technical provisions for this agreement requires, in any event, the timely provision of federal funds to construct and operate the physical works. The several states should receive assurance that their rights and those of their respective water users will not be impaired within the legal operation of the agreement.