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Title Environmental impact studies of the Navajo and Kaiparowits power plants. Annual report No. 2, 1 Jun 1972--31 May 1973
Creator/Author Gaud, W.S. ; Davey, J.R. ; States, J.S. ; Jenness, Mi.I. ; Guerrero, R.R.
Publication Date1973 May 31
OSTI IdentifierOSTI ID: 7249725
Report Number(s)PB-242846;NAU/EIS-73/001
Resource TypeTechnical Report
Resource RelationPrepared in cooperation with Arizona Public Service, Co., Phoenix, Salt River Project, Phoenix, Ariz., and Brigham Young Univ., Provo, Utah. Center for Health and Environmental Studies
Research OrgNorthern Arizona Univ., Flagstaff (USA)
Subject200200 -- Fossil-Fueled Power Plants-- Waste Management; ;POWER PLANTS-- ENVIRONMENTAL EFFECTS; COMPUTER CALCULATIONS;ECOLOGY;ECOSYSTEMS;LAKES;MATHEMATICAL MODELS;MICROORGANISMS;SOILS
Related SubjectSURFACE WATERS
Description/Abstract During the second year of study, investigative efforts were concentrated on above-ground vegetation, microbial systems, small mammals, and Lake Powell, and included monitoring of relevant biotic and abiotic factors, the subjection of laboratory systems to simulated effluent, and the synthesis of data through computer analysis and modeling.^Soils were primarily coarse-textured, sandy loams with low moisture holding capacity, organic matter content, nitrogen and sulfur content, and were moderately saline with neutral to alkaline H. Sulfur content of soils and vegetation varied with elevation.^Decomposition of soil organic matter was slow, and respiration of soil microbial communities was low.^A beetle parasite was found to be a significant mortality factor of Ephedra.^Preliminary exposure of native grasses to sulfur dioxide showed seedlings to be more sensitive than mature plants.^Analysis of vegetational communities revealed high variability among sites and over time.^Disturbed lands were partially reclaimed, and productivity measurements in a grassland were initiated.^Ponderosa trees on nearby Navajo Mountain appeared to be heavily impacted by natural stresses.^Phytoplankton and zooplankton dynamics in the lower bays of Lake Powell were investigated, and a preliminary study of the effect of mercury on native diatoms was carried out.
Country of PublicationUnited States
LanguageEnglish
FormatPages: 260
AvailabilityNTIS $8.50.
System Entry Date2001 May 13

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