Leticia Colmenares, Windward Community College Unknown http://data.nodc.noaa.gov/accession/0002449 http://www.wcc.hawaii.edu/water/ Measurements of water quality parameters were taken by Windward Community College faculty and students at eight sites in the Heeia Stream and adjacent Kaneohe Bay waters from May 2004 through March 2005. Parameters include Combined Nitrogen, Photo Oxidized Nitrate, Photo Oxidized Nitrite, Total Nitrogen, Total Phosphate. Data provided as MS Excel spreadsheets. Assess the water quality of Heeia Stream and adjacent bay waters. NOAASupplemental:Entry_ID: Unknown Sensor_Name: sample bottles, ion chromatograph system Source_Name: manual Project_Campaign: MIS-NOAA, NOAA Grant NA16 RG 2069 Originating_Center: Windward Community College Storage_Medium: MS Excel Online_size: 1063 kbytes NODC Accession Number 0002449 20040522 20050319 ground condition Complete Irregular -157.8164 -157.8078 21.4483 21.4175 None Coastal studies, stream studies, water quality, Combined Nitrogen, Photo Oxidized Nitrate, Photo Oxidized Nitrite, Total Nitrogen, Total Phosphate ISO 19115 Topic Category environment 007 CoRIS Discovery Thesaurus Numeric Data Sets > Water Quality CoRIS Theme Thesaurus EARTH SCIENCE > Hydrosphere > Water Quality None North Pacific, Hawaiian Islands Windward Oahu Heeia Stream Kaneohe Bay CoRIS Region MHI CoRIS Place Thesaurus OCEAN BASIN > Pacific Ocean > Central Pacific Ocean > Hawaiian Islands > Oahu Island > Kaneohe Bay (21N157W0004) COUNTRY/TERRITORY > United States of America > Hawaii > Honolulu > Kaneohe Bay (21N157W0004) OCEAN BASIN > Pacific Ocean > Central Pacific Ocean > Hawaiian Islands > Oahu Island > Oahu (21N157W0003) COUNTRY/TERRITORY > United States of America > Hawaii > Honolulu > Oahu (21N157W0003) None near surface None Dataset credit required Leticia Colmenares Windward Community College Marine Chemist mailing and physical

45-720 Kea'ahala Road

Kaneohe Hawaii 96744 USA (808) 236-9120 leticia@hawaii.edu National Oceanic and Atmospheric Administration,Windward Community College MS Excel see lineage, process step none Determination of Nitrite, Nitrate and Phosphate Summary of Method. Water samples are filtered and analyzed by ionchromatography (IC). Each analytical batch consists of a blank, 5 external calibration standards and a calibration check for every 8 samples. The method detection limits (MDL) are as follows: 0.1 mg/L for phosphate, and0.05 mg/L for nitrite and nitrate. Preparation of IC samples. Water samples are pre-filtered before analysis inthe Dionex ICS-90 ion chromatography system. Fresh water samples (5 mL) are filtered through 0.20 mm IC Millex syringe filters (for freshwater samples) while saltwater samples are filtered through the Dionex Ag/H cartridges and diluted 50:50 using deionized distilled water. Preparation of IC calibration standards. The following calibration standards are prepared.(1) 0.1 mg/L of phosphate, 0.05 mg/L of nitrite and 0.05 mg/L nitrate(2) 0.2 mg/L phosphate and 0.1 mg/L nitrite and 0.1 mg/L nitrate(3) 1.0 mg/L phosphate and 0.5 mg/L nitrite and 0.5 mg/L nitrate(4) 2.0 mg/L phosphate and 1.0 mg/L nitrite and 1.0 mg/L nitrate(5) 10.0 mg/L phosphate and 5.0 mg/L nitrite and 5.0 mg/L nitrate Calibration. The calibration curve must consist of at least three datapoints. The response of each calibrator must be within 10%, otherwise, it does not meet method criteria and must be removed from the working calibration curve.Final data are summarized in Excel worksheets. The nitrite as N (mg/L) is calculated by multiplying the nitrite (mg/L) with 0.304 (factor). Likewise, the nitrate as N (mg/L) content is calculated by multiplying the nitrate(mg/L) content with 0.226 (factor). The phosphate (mg/L) content is converted to phosphorus (mg/L) by using the factor of 0.326. Determination of Total Nitrogen and Total Phosphorus Summary of Method. To analyze the total N and total P content, all phosphorus-and nitrogen-containing substances in the water sample are first converted to inorganic nitrates and phosphates by photo-oxidation. After photo-oxidation, the samples are analyzed as described above. Photo-oxidation. Water samples (100 mL) added with 2 drops of 30% H2O2, arephoto-oxidized using Ace-Hanovia photooxidation apparatus (Department ofHealth State Laboratory) for four (4) hours to hydrolyze all phosphorus-containing substances into phosphates, and all nitrogen-containing substances into nitrates. Unknown Leticia Colmenares Windward Community College Marine Chemist mailing and physical

45-720 Kea'ahala Road

Kaneohe Hawaii 96744 USA (808) 236-9120 leticia@hawaii.edu Original data files given as MS Excel files in directory ../../data/excel/: (Note month/year range, mmyy, suffixed to each root filename.) File comment HeeiaCN0504-1004.xls Combined Nitrogen HeeiaCN1104-0305.xls Combined Nitrogen HeeiaPONitrate0504-1004.xls Photo Oxidized Nitrate HeeiaPONitrate1104-0305.xls Photo Oxidized Nitrate HeeiaPONitrite0504-1004.xls Photo Oxidized Nitrite HeeiaPONitrite1104-0305.xls Photo Oxidized Nitrite HeeiaTN0504-1004.xls Total Nitrogen HeeiaTN1104-0305.xls Total Nitrogen HeeiaTP0504-1004.xls Total Phosphate HeeiaTP1104-0305.xls Total Phosphate Sample dates, locations, and units are defined in each file. Redundant ASCII copies were made of each with same file name except for a CSV (Comma Separated Version) extention. Time series plots of parameters and comments were downloaded off the internet, http://www.wcc.hawaii.edu/water/, and placed in directory ../../data/figs_text More information regarding the data collection locations can be found in directory ../../data/sites: none NOAA/NESDIS/National Oceanographic Data Center Data Access Group, User Services Team mailing and physical

SSMC-3 Fourth Floor

1315 East West Highway

Silver Spring MD 20910-3282 USA 301-713-3277 301-713-3302 NODC.Services@noaa.gov 8am-5pm, Monday through Friday Downloadable Data NOAA makes no warranty regarding these data,expressed or implied, nor does the fact of distribution constitute such a warranty. NOAA, NESDIS, NODC and NCDDC 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. MS Excel, and ACSII CSV http://data.nodc.noaa.gov/accession/0002449 Prices vary depending on data set, output medium and ordering mechanism. A standard handling charge, with additional costs for special handling, may be added to the basic cost of the data. Prepayment by check, money order or bank card is required. Orders may be placed via fax, email, regular mail, telephone or via the NNDC Online Store. 20121207 20100113 Mr. Patrick C. Caldwell NOAA/NESDIS/NODC/NCDDC Hawaii/US Pacific Liaison mailing

1000 Pope Road, MSB 316

Dept. of Oceanography

University of Hawaii at Manoa

Honolulu Hawaii 96822 USA (808)-956-4105 (808) 956-2352 caldwell@hawaii.edu 8 AM to 5 PM weekdays check services@nodc.noaa.gov if not available FGDC CSDGM FGDC-STD-001-1998 20100113043904 None 20040522 20050319 http://www.coris.noaa.gov/metadata/records/html/heeia_wq2_fgdc_0002449.html 4433