The Hawaiian Electric Company Inc. (HECO), under requirements of National Pollutant Discharge Elimination System (NPDES) Permit HI0000019, Section C.5, annually conducts and reports results of a monitoring program for waters receiving effluent from the Kahe Generating Station, O'ahu, Hawai'i. This report presents results of monitoring conducted during 1996 for water temperature, sand entrainment, and coral coverage. Replicate coral sampling indicated that significant changes in mean coral coverage occurred only at the station 300 m northeast of the Kahe outfall where significant reductions in the coral coverage have occurred in three of the previous four years since Hurricane Iniki in 1992. However, 1995-96 results indicated significant increases in coverage of the two major component species and in total live coral, the first time this has occurred at this station since Hurricane Iwa in 1982. Over the ten year term from 986 to 1996, this station registered significant reductions in coverage of the two dominant species and in total coral, despite the significant increases in coverage that occurred in 1995-96. The significant decreases in coral cover from 1986 to 1996 were direct effects from Hurricane Iniki, which occurred in September 1992. Results from 1996 monitoring support previous years' conclusions that the Kahe offshore outfall has produced negligible impact on the nearshore coral community and that natural storm disturbances have had greater destructive influence on reef coral coverage throughout the Kahe area. These data are filed at the NODC under NODC Accession # 9900012.
National Pollutant Discharge Elimination System (NPDES) permit HI0000019 authorizes HECO to discharge waste water from the Kahe Generating Station. A provision of this permit is that HECO follow a marine monitoring program and documents marine effects of cooling-water discharge from Kahe Generating Station Units 1 through 6. Specific studies covered under this program include monitoring of temperature elevations of thermal effluents, quantities of sediment entrainment and throughput, and reef coral communities. An annual report of the data, analysis, and findings of these monitoring studies is submitted to the State Department of Health (DOH) Director and Environmental Protection Agency (EPA) Regional Administrator no later than March 1 of each year.
The 1996 daily discharge and unadjusted intake temperature data log (Appendix B of this report) is provided under NODC Accession # 9900021, 'Kahe Generating Station 1996 Temperature Data.xls' Resource Description: NODC Accession # 9900012
ground condition
The Integrated Taxonomic Information System (ITIS - at URL: http://www.itis.usda.gov/itis_query.html) was utilized as an aid to complete upper level species classifications FOR THIS METADATA RECORD ONLY, to aid in the development of search engines. No original data was altered at the NODC.
See originator data for taxonomic procedures employed during this study. The Integrated Taxonomic Information System (ITIS) was utilized as an aid to complete upper level species classifications FOR THIS METADATA RECORD ONLY. No original data was altered at the NODC.
Keystone (dominant) hard and soft coral species
None. NOAA and NODC would appreciate recognition as the resource from which these data were obtained in any publications and/or other representations of these data.
P. O. Box 2750
HECO can be contacted directly through website
Hawaiian Electric Company Environmental Department
After 1973, HECO's Environmental Department conducted extensive NPDES marine monitoring studies to determine the conditions of the Kahe nearshore environment during the station's expansion to six generating units and the relocation of the Kahe shoreline outfall to its present offshore site (Coles and McCain, 1973; Coles and Fukuda, 1975, 1983, 1984; Environmental Department, 1976; McCain, 1977; Coles, 1979, 1980; Coles et al., 1981, 1982, 1985, 1986; Fukuda and Oda, 1987; Environmental Department, 1988, 1989, 1990, 1991, 1992, 1993 1994 and 1995). Several of these reports also document the impacts of major storms on the Kahe nearshore environment that occurred in 1980, 1982 and 1992, and the subsequent recovery of the storm-damaged areas that are influenced by power station operation. These NPDES monitoring reports were submitted to the HI State Department of Health upon completion and are herewith incorporated by reference. This investigation is a continuation of the monitoring programs documented in the referenced reports.
Detailed information re methodologies employed in this study are included as part of the original data file.
See originator data methodologies description and discussion
1315 East-West Highway, SSMC3, 4th Floor
Phone/e-mail/FAX/voice mail message
NOAA makes no warranty regarding these data, expressed or implied, nor does the fact of distribution constitute such a warranty. NOAA and NODC cannot assume liability for any damages caused by any errors or omissions in these data, nor as a result of the failure of these data to function on a particular system.
None
Text with accompanying data tables, references, and appendices
Download through via NODC's ""Data Direct"" system at the NODC homepage at www.nodc.noaa.gov or contact NODC for custom order. (When requesting data from the NODC, the desired data set may be referred to by the 7-digit number given in the RESOURCE DESCRIPTION field of this metadata record)
Contact the NODC User Services Group via phone/FAX/E-mail: nodc.services@noaa.gov
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