Metadata: Identification_Information: Citation: Citation_Information: Originator: Church, Stanley E. Originator: Fey, David L. Originator: Wanty, Richard B. Originator: Verplanck, Philip L. Originator: San Juan, Carma A. Publication_Date: 2012 Title: Quantitative Results of Chemical Analyses of Water Samples, Central Colorado Assessment Project Edition: 1.0 Geospatial_Data_Presentation_Form: vector digital data Series_Information: Series_Name: USGS Data Series Issue_Identification: DS-614 Publication_Information: Publication_Place: Denver, CO Publisher: U.S. Geological Survey Other_Citation_Details: "Water_QuantResults" is the ArcGIS feature class name (file name). Online_Linkage: http://pubs.usgs.gov/ds/614 Larger_Work_Citation: Citation_Information: Originator: Church, Stanley E. Originator: San Juan, Carma A. Originator: Fey, David L. Originator: Schmidt, Travis S. Originator: Klein,Terry L. Originator: DeWitt, Ed H. Originator: Wanty, Richard B. Originator: Verplanck, Philip L. Originator: Mitchell, Katharine A. Originator: Adams, Monique G. Originator: Choate, LaDonna M. Originator: Todorov, Todor I. Originator: Rockwell, Barnaby W. Originator: McEachron, Luke Originator: Anthony, Michael W. Publication_Date: 2012 Title: Geospatial database for regional environmental assessment of central Colorado Geospatial_Data_Presentation_Form: document Series_Information: Series_Name: USGS Data Series Issue_Identification: DS-614 Publication_Information: Publication_Place: Denver, CO Publisher: U.S. Geological Survey Online_Linkage: http://pubs.usgs.gov/ds/614 Description: Abstract: The data in this table are analyses of water samples collected by the U.S. Geological Survey from July 2004 to September 2008 for the Central Colorado Assessment Project (CCAP) environmental assessment. The samples were analyzed to evaluate if weathering of rocks underlying watersheds results in water and sediment geochemistry that affects aquatic ecosystems or human health. Filtered, nitric-acidified and unfiltered, nitric-acidified water samples were analyzed in the USGS Denver laboratories by inductively coupled-plasma atomic emission spectroscopy (ICP-AES) and inductively coupled-plasma mass spectrometry (ICP-MS). Filtered, unacidified water samples were analyzed by ion chromatography (IC). Filtered, acidified water samples were also analyzed for dissolved organic carbon (DOC) content. About 33 percent of the sites were sampled more than once to evaluate annual variations or sample collection bias. In addition, a small number of samples were collected from larger drainage basins to evaluate metal attenuation and dilution downstream from mining districts or large hydrothermally altered areas. Purpose: Points in this dataset represent the locations and analyses of 388 water samples collected from streams in the CCAP study area. Different collected fractions were analyzed by different techniques and are summarized in the attribute table. The analyses of the water samples were used to 1) compare the relationship between surface-water geochemistry and aquatic fauna in mined, prospected, and unmined watersheds; and 2) to evaluate metal attenuation and dilution downstream from mining districts or large hydrothermally altered areas. Supplemental_Information: The USGS conducted the Central Colorado Assessment Project (CCAP) from 2003 to 2008 to provide Federal, State, and local land management entities geoscience information to address issues related to urbanization of the Colorado Front Range Urban Corridor. Rapid population growth along the Front Range and in the CCAP region, which encompasses about 20,800 square miles (53,800 square kilometers) of central Colorado between the New Mexico and Wyoming borders (37 - 41 degrees north latitude), and from west of Denver to east of Vail, Colorado (approximately 104.8 - 106.625 degrees west longitude), has caused tremendous demand for natural resources and has created challenging land-management issues related to the wilderness/urban interface expansion. Regional CCAP data, including geologic, geochemical, geophysical, biological, and remote sensing data, were compiled to assess the availability of mineral resources; the geo-environmental effects of historical mining and wildfires; geologic controls on groundwater resources; and hazards such as landslides and flooding. Time_Period_of_Content: Time_Period_Information: Range_of_Dates/Times: Beginning_Date: 2004 Ending_Date: 2008 Currentness_Reference: ground condition Status: Progress: Complete Maintenance_and_Update_Frequency: None planned Spatial_Domain: Bounding_Coordinates: West_Bounding_Coordinate: -106.653847 East_Bounding_Coordinate: -104.863719 North_Bounding_Coordinate: 40.989098 South_Bounding_Coordinate: 37.725228 Keywords: Theme: Theme_Keyword_Thesaurus: American Geological Institute Glossary of Geology Theme_Keyword: water chemistry Theme_Keyword: sediment geochemistry Theme_Keyword: historical mining effects Theme_Keyword: benthic macroinvertebrate Place: Place_Keyword_Thesaurus: U.S. Board of Geographic Names (BGN) Geographic Place_Keyword: Colorado Place_Keyword: Arapaho National Forest Place_Keyword: Gunnison National Forest Place_Keyword: Pike National Forest Place_Keyword: Rio Grande National Forest Place_Keyword: Roosevelt National Forest Place_Keyword: Routt National Forest Place_Keyword: San Isabel National Forest Place_Keyword: White River National Forest Place_Keyword: Great Sand Dunes National Park Place_Keyword: Rocky Mountain National Park Place_Keyword: Alamosa County Place_Keyword: Boulder County Place_Keyword: Chaffee County Place_Keyword: Clear Creek County Place_Keyword: Conejos County Place_Keyword: Costilla County Place_Keyword: Custer County Place_Keyword: Douglas County Place_Keyword: Eagle County Place_Keyword: El Paso County Place_Keyword: Fremont County Place_Keyword: Gilpin County Place_Keyword: Grand County Place_Keyword: Gunnison County Place_Keyword: Huerfano County Place_Keyword: Jackson County Place_Keyword: Jefferson County Place_Keyword: Lake County Place_Keyword: Larimer County Place_Keyword: Las Animas County Place_Keyword: Park County Place_Keyword: Pitkin County Place_Keyword: Pueblo County Place_Keyword: Saguache County Place_Keyword: Summit County Access_Constraints: None Use_Constraints: Data have been checked to ensure the accuracy. If any errors are detected, please notify the originating office. The U.S. Geological Survey strongly recommends that careful attention be paid to the metadata file associated with these data. The U.S. Geological Survey shall not be held liable for improper or incorrect use of the data described and (or) contained herein. Acknowledgement of the U.S. Geological Survey would be appreciated in products derived from these data. Any use of trade, product, or firm names is for descriptive purposes only and does not imply endorsement by the U.S. Government. Although this Federal Geographic Data Committee-compliant metadata file is intended to document the data set in nonproprietary form, as well as in ArcGIS format, this metadata file may include some ArcGIS-specific terminology. Point_of_Contact: Contact_Information: Contact_Person_Primary: Contact_Person: Richard B. Wanty Contact_Organization: U.S. Geological Survey Contact_Position: Research Chemist Contact_Address: Address_Type: mailing address Address: Box 25046, Mail Stop 973 City: Denver State_or_Province: Colorado Postal_Code: 80225 Country: United States Contact_Voice_Telephone: 303-236-1819 Contact_Facsimile_Telephone: 303-236-3200 Contact_Electronic_Mail_Address: rwanty@usgs.gov Data_Set_Credit: Spatial data sets supporting the Central Colorado Assessment Project (CCAP) were developed by the U.S. Geological Survey Central Mineral and Environmental Resources Science Center (CMERSC) and the Crustal Geophysics and Geochemistry Science Center (CGGSC) in cooperation with the U.S. Geological Survey Geology and Environmental Change Science Center (GECSC), the Colorado Geological Survey (CGS), the Rocky Mountain Region U.S. Department of Agriculture-Forest Service (USDA-FS) and the National Park Service (NPS). Native_Data_Set_Environment: Microsoft Windows XP Version 5.1 (Build 2600) Service Pack 3; ESRI ArcCatalog 9.3.1.3500 Cross_Reference: Citation_Information: Originator: Granitto, Matthew Originator: Dewitt, Ed H. Originator: Klein, Terry L. Publication_Date: 2010 Title: Central Colorado Assessment Project (CCAP) - Geochemical data for rock, sediment, soil, and concentrate sample media Edition: 1.0 Geospatial_Data_Presentation_Form: document Series_Information: Series_Name: USGS Data Series Issue_Identification: DS-509 Publication_Information: Publication_Place: Denver, CO Publisher: U.S. Geological Survey Online_Linkage: http://pubs.usgs.gov/ds/509/ Data_Quality_Information: Attribute_Accuracy: Attribute_Accuracy_Report: The water samples in this dataset were chemically analyzed in the USGS-Denver laboratories using ICP-MS methods. The accuracy of the geochemical data was verified by replicate analysis of certified USGS standard materials submitted in each analytical job. Values that were less than the lower detection limits of an analytical method were reported as a negative number: A value of -2 in the AG_PPM field is equivalent to <2 ppm Ag. Major elements Na, K, Mg, Ca were analyzed by using ICP-AES methods. Logical_Consistency_Report: A site is a single geographic location where water samples were obtained. Multiple points at the same geographic coordinates indicate where samples were obtained over multiple years. Consistent analytical methods were used for chemical analyses of water data throughout the project. ICP-AES methods were used for determination of sodium (Na), potassium (K), magnesium (Mg), and calcium (Ca). Concentrations of trace elements were determined using ICP-MS methods. Ion chromatography was used to determine concentrations of fluoride (F), chloride (Cl), and nitrate (NO3). Completeness_Report: Samples were collected from a 20,800 square mile (53,800 square kilometers) region of central Colorado. About 80% of the samples were collected from 229 small watersheds selected for specific geologic conditions and the presence or absence of mining activity. The remaining 20% of the samples were collected from larger drainage basins to evaluate metal attenuation and dilution downstream from mining districts or large hydrothermally altered areas. Together the sample sites cover about 80% of the land area in the CCAP study area. Favorable stream sites were occasionally not sampled due to access restrictions or lack of stream flow at the time of the field visit. Positional_Accuracy: Horizontal_Positional_Accuracy: Horizontal_Positional_Accuracy_Report: Spatial locations were determined from hand-held global positioning system (GPS) devices. In general, the GPS units used by field scientists recorded sample locations to within 100 feet (30 meters) of the true location. When more than one scientist collected field samples at a site on different dates, the reported location is a composite of the GPS measurements and the location is verified using a geographic information system (GIS) and digital topographic maps. Water samples were typically collected at the recorded GPS location; sediment and aquatic insect samples were usually collected within 75 feet (22 meters) of the indicated location. Lineage: Source_Information: Source_Citation: Citation_Information: Originator: Briggs, P.H. Publication_Date: 2002 Title: The determination of twenty-seven elements in aqueous samples by inductively coupled plasma-atomic emission spectrometry Geospatial_Data_Presentation_Form: document Series_Information: Series_Name: U.S. Geological Survey Open-File Report Issue_Identification: 02-223 Publication_Information: Publication_Place: Denver, CO Publisher: U.S. Geological Survey Other_Citation_Details: Chapter F in Taggart, J.E., Jr., ed., Analytical methods for chemical analysis of geologic and other materials, U.S. Geological Survey Online_Linkage: http://pubs.usgs.gov/of/2002/ofr-02-0223/ Type_of_Source_Media: online Source_Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 2002 Source_Currentness_Reference: publication date Source_Citation_Abbreviation: Briggs, 2002a Source_Contribution: Report describing analytical method used for chemical analyses. Source_Information: Source_Citation: Citation_Information: Originator: Lamothe, P.J. Originator: Meier, A.L. Originator: Wilson, S.A., Publication_Date: 2002 Title: The determination of forty elements in aqueous samples by inductively coupled plasma-mass spectrometry Geospatial_Data_Presentation_Form: document Series_Information: Series_Name: U.S. Geological Survey Open-File Report Issue_Identification: 02-223 Publication_Information: Publication_Place: Denver, CO Publisher: U.S. Geological Survey Other_Citation_Details: Chapter H in Taggart, J.E., Jr., ed. Analytical methods for chemical analysis of geologic and other materials, U.S. Geological Survey Online_Linkage: http://pubs.usgs.gov/of/2002/ofr-02-0223/ Type_of_Source_Media: online Source_Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 2002 Source_Currentness_Reference: publication date Source_Citation_Abbreviation: Lamothe and others, 2002 Source_Contribution: Report describing analytical method used for chemical analyses. Source_Information: Source_Citation: Citation_Information: Originator: Theodorakos, P.M. Originator: d'Angelo, W. M. Originator: Ficklin, W. H. Publication_Date: 2002 Title: Fluoride, chloride, nitrate, and sulfate in aqueous solution utilizing AutoSupression chemically suppressed ion chromatography Geospatial_Data_Presentation_Form: document Series_Information: Series_Name: U.S. Geological Survey Open-File Report Issue_Identification: 02-223 Publication_Information: Publication_Place: Denver, CO Publisher: U.S. Geological Survey Other_Citation_Details: Chapter V in Taggart, J.E., Jr., ed., Analytical methods for chemical analysis of geologic and other materials, U.S. Geological Survey Online_Linkage: http://pubs.usgs.gov/of/2002/ofr-02-0223/ Type_of_Source_Media: online Source_Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 2002 Source_Currentness_Reference: publication date Source_Citation_Abbreviation: Theodorakos and others, 2002a Source_Contribution: Report describing analytical method used for chemical analyses. Source_Information: Source_Citation: Citation_Information: Originator: Theodorakos, P.M. Publication_Date: 2002 Title: Determination of total alkalinity using a preset endpoint (pH 4.5) autotitration system Geospatial_Data_Presentation_Form: document Series_Information: Series_Name: U.S. Geological Survey Open-File Report Issue_Identification: 02-223 Publication_Information: Publication_Place: Denver, CO Publisher: U.S. Geological Survey Other_Citation_Details: Chapter E in Taggart, J.E., Jr., ed., Analytical methods for chemical analysis of geologic and other materials, U.S. Geological Survey Online_Linkage: http://pubs.usgs.gov/of/2002/ofr-02-0223/ Type_of_Source_Media: online Source_Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 2002 Source_Currentness_Reference: publication date Source_Citation_Abbreviation: Theodorakos, 2002b Source_Contribution: Report describing analytical method used for chemical analyses. Source_Information: Source_Citation: Citation_Information: Originator: Shimadzu Corporation Publication_Date: 1997 Title: Model TOC 5000A instrument manual Geospatial_Data_Presentation_Form: document Publication_Information: Publication_Place: Kyoto, Japan Publisher: Shimadzu Corporation Online_Linkage: http://www.ecs.umass.edu/eve/facilities/equipment/TOC5000.htm Type_of_Source_Media: online Source_Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 1997 Source_Currentness_Reference: publication date Source_Citation_Abbreviation: Shimadzu, 1997 Source_Contribution: Report describing analytical method used for chemical analyses. Process_Step: Process_Description: Water samples were collected from suitable stream sites from July 2004 to September 2007. Sample locations, digitally recorded with hand-held GPS devices, were imported into ArcGIS to produce the point features in this data set. Field blanks, collected and processed for quality assurance purposes, were assigned an arbitrary location outside the project area of N 40 degrees, W 105 degrees. Attributes summarizing location, stream flow (discharge), temperature, pH, conductivity, and alkalinity were added by the authors. The water samples were chemically analyzed for different fractions using various laboratory techniques. For instance, filtered-acidified (FA) fractions were collected by filtering through a 0.45 micrometer syringe-mounted filter and acidified with ultra-pure nitric acid, and analyzed by ICP-AES (Briggs, 2002a) and ICP-MS (Lamothe and others, 2002) for cations. Raw-acidified (RA) fractions were unfiltered samples acidified with ultrapure nitric acid, also analyzed by ICP-AES and ICP-MS. Depending on the element and concentration, either ICP-AES or ICP-MS results are reported. Selection rule criteria are outlined in the table tbl_Metadata_Analytical_Methods_Units. Filtered unacidified (FU) fractions were collected by filtering through a 0.45 micrometer syringe-mounted filter and kept chilled until analsysis for anions by ion chromatography (IC) (Theodorakos, 2002a). Unfiltered, unacidified (RU) fractions were collected and chilled until analysis for alkalinity (Theodorakos and others, 2002b). Dissolved organic carbon (DOC) (Shimadzu, 1997) analyses were performed on 0.45-micrometer-filtered-hydrochloric acid-preserved fractions collected for ferrous/total iron determination. Process_Date: 2004-2009 Spatial_Data_Organization_Information: Direct_Spatial_Reference_Method: Vector Point_and_Vector_Object_Information: SDTS_Terms_Description: SDTS_Point_and_Vector_Object_Type: Entity point Point_and_Vector_Object_Count: 388 Spatial_Reference_Information: Horizontal_Coordinate_System_Definition: Planar: Grid_Coordinate_System: Grid_Coordinate_System_Name: Universal Transverse Mercator Universal_Transverse_Mercator: UTM_Zone_Number: 13 Transverse_Mercator: Scale_Factor_at_Central_Meridian: 0.999600 Longitude_of_Central_Meridian: -105.000000 Latitude_of_Projection_Origin: 0.000000 False_Easting: 500000.000000 False_Northing: 0.000000 Planar_Coordinate_Information: Planar_Coordinate_Encoding_Method: coordinate pair Coordinate_Representation: Abscissa_Resolution: 0.000100 Ordinate_Resolution: 0.000100 Planar_Distance_Units: meters Geodetic_Model: Horizontal_Datum_Name: North American Datum of 1927 Ellipsoid_Name: Clarke 1866 Semi-major_Axis: 6378206.400000 Denominator_of_Flattening_Ratio: 294.978698 Vertical_Coordinate_System_Definition: Altitude_System_Definition: Altitude_Datum_Name: North American Vertical Datum of 1988 Altitude_Resolution: 0.000100 Altitude_Distance_Units: meters Altitude_Encoding_Method: Explicit elevation coordinate included with horizontal coordinates Entity_and_Attribute_Information: Detailed_Description: Entity_Type: Entity_Type_Label: WaterQuantResults Entity_Type_Definition: Geographic location water sample that was chemically analyzed Entity_Type_Definition_Source: Metadata author Attribute: Attribute_Label: OBJECTID Attribute_Definition: Internal feature number. Attribute_Definition_Source: ESRI Attribute_Domain_Values: Unrepresentable_Domain: Sequential unique whole numbers that are automatically generated. Attribute: Attribute_Label: Shape Attribute_Definition: Feature geometry. Attribute_Definition_Source: ESRI Attribute_Domain_Values: Unrepresentable_Domain: Coordinates defining the features. Attribute: Attribute_Label: SampleID Attribute_Definition: Unique identification assigned to each sample collected from a stream site Attribute_Definition_Source: Metadata authors Attribute_Domain_Values: Unrepresentable_Domain: Alpha numeric number consisting of a two digit year, a state identifier, and a three digit site number Attribute: Attribute_Label: Longitude_GIS Attribute_Definition: Longitude coordinate of sample site reported in decimal degrees. Typically the coordinate is determined from multiple GPS measurements and verified using a GIS and digital topographic data. Attribute_Definition_Source: Metadata author Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: -106.63616 Range_Domain_Maximum: -104.86801 Attribute_Units_of_Measure: degree Attribute_Measurement_Resolution: 0.0003 Attribute: Attribute_Label: Latitude_GIS Attribute_Definition: Latitude coordinate of sample site reported in decimal degrees. Typically the coordinate is determined from multiple GPS measurements and verified using a GIS and digital topographic data. Attribute_Definition_Source: Metadata author Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 37.73471 Range_Domain_Maximum: 40.97751 Attribute_Units_of_Measure: degree Attribute_Measurement_Resolution: 0.0002 Attribute: Attribute_Label: Discharge Attribute_Definition: Discharge measured by pygmy meter or bucket and stopwatch. Negative values indicate stream flow was visually estimated and is less than the absolute value of the number. Attribute_Definition_Source: Metadata author Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: -0.5 Range_Domain_Maximum: 79.5 Attribute_Units_of_Measure: cubic feet per second Attribute: Attribute_Label: Conductivity Attribute_Definition: Specific conductance measured in the field by conductivity meter that is calibrated in the laboratory and occasionally checked for accuracy Attribute_Definition_Source: Metadata author Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 1 Range_Domain_Maximum: 3002 Attribute_Units_of_Measure: micro siemens per centimeter Attribute: Attribute_Label: Water_Temp Attribute_Definition: Temperature measured by thermometer or thermocouple in degrees Centigrade Attribute_Definition_Source: Metadata author Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0.2 Range_Domain_Maximum: 25 Attribute_Units_of_Measure: degree (Celsius) Attribute: Attribute_Label: pH Attribute_Definition: pH measured in the field by calibrated pH meter- minimum 2 buffer calibration, usually 3. Buffers are corrected for the ambient temperature during calibration. Attribute_Definition_Source: Metadata author Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 2.77 Range_Domain_Maximum: 8.62 Attribute_Units_of_Measure: standard units Attribute: Attribute_Label: Alkalinity Attribute_Definition: Alkalinity determined by standardized acid titration of raw water sample. Attribute_Definition_Source: Metadata author Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0.1178 Range_Domain_Maximum: 192.3 Attribute_Units_of_Measure: millgrams per liter as CaCO3 Attribute: Attribute_Label: Cl Attribute_Definition: Chloride as Cl by ion chromatography of a filtered unacidified sample. Negative values indicate determinations less than the detection limit of the analytical method; the absolute value of the negative number is the detection limit. A null (or empty cell) means not analyzed. Attribute_Definition_Source: Metadata author Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: -0.08 Range_Domain_Maximum: 39 Attribute_Units_of_Measure: part per million Attribute: Attribute_Label: F Attribute_Definition: Fluoride as F by ion chromatography of a filtered unacidified sample. Negative values indicate determinations less than the detection limit of the analytical method; the absolute value of the negative number is the detection limit. A null (or empty cell) means not analyzed. Attribute_Definition_Source: Metadata author Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: -0.08 Range_Domain_Maximum: 39 Attribute_Units_of_Measure: part per million Attribute: Attribute_Label: NO3 Attribute_Definition: Nitrate as NO3 by ion chromatography of a filtered unacidified sample. Negative values indicate determinations less than the detection limit of the analytical method; the absolute value of the negative number is the detection limit. A null (or empty cell) means not analyzed. Attribute_Definition_Source: Metadata author Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: -0.08 Range_Domain_Maximum: 16 Attribute_Units_of_Measure: part per million Attribute: Attribute_Label: SO4 Attribute_Definition: Sulfate as SO4. If <25 mg/L ion chromatography (IC) on a filtered, unacidified sample is used, if >25 mg/L, sulfate is measured by ICP-MS on a filtered acidified (HNO3) sample. For 2007, IC results were used if SO4 < 25 mg/L. Otherwise the average of ICP-MS and ICP-AES results were used. ICP-AES results were used if they yielded better charge balances. These were determined using PHREEQC or WATEQ4f on a case-by-case basis. Negative values indicate determinations less than the detection limit of the analytical method; the absolute value of the negative number is the detection limit. A null (or empty cell) means not analyzed. Attribute_Definition_Source: Metadata author Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: -1.6 Range_Domain_Maximum: 1920 Attribute_Units_of_Measure: part per million Attribute: Attribute_Label: DOC Attribute_Definition: Dissolved organic carbon on a sample that is filtered through a 1 micron glass-fiber filter, field acidified and stored in an amber glass bottle. In 2004, samples were acidified with H2SO4 and analyzed by Huffman Labs, Golden, CO. Beginning in 2005, samples were acidified with HCl and analyzed by D. Fey at USGS. Negative values indicate determinations less than the detection limit of the analytical method; the absolute value of the negative number is the detection limit. A null (or empty cell) means not analyzed. Attribute_Definition_Source: Metadata author Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: -0.01 Range_Domain_Maximum: 10.2 Attribute_Units_of_Measure: milligram per liter Attribute: Attribute_Label: TOC Attribute_Definition: Total organic carbon on a sample that is field acidified with H2SO4 and stored in an amber glass bottle. Samples were collected in 2004 and analyzed by Huffman Labs. There was no significant difference between DOC and TOC, so TOC analyses were discontinued after 2004. A null (or empty cell) means not analyzed. Attribute_Definition_Source: Metadata author Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0 Range_Domain_Maximum: 9.82 Attribute_Units_of_Measure: milligram per liter Attribute: Attribute_Label: Ag_fa Attribute_Definition: Silver in a sample that is filtered through a 0.45 micrometer filter and acidified with HNO3. ICP-MS result is used. Negative values indicate determinations less than the detection limit of the analytical method; the absolute value of the negative number is the detection limit. Detection limits are related to equipment performance and may vary over time. A null (or empty cell) means not analyzed. Attribute_Definition_Source: Metadata author Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: -3 Range_Domain_Maximum: -1 Attribute_Units_of_Measure: microgram per liter Attribute: Attribute_Label: Ag_ra Attribute_Definition: Silver in a sample that is not filtered, but acidified with HNO3. ICP-MS result is used. Negative values indicate determinations less than the detection limit of the analytical method; the absolute value of the negative number is the detection limit. Detection limits are related to equipment performance and may vary over time. A null (or empty cell) means not analyzed. Attribute_Definition_Source: Metadata author Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: -3 Range_Domain_Maximum: -1 Attribute_Units_of_Measure: microgram per liter Attribute: Attribute_Label: Al_fa Attribute_Definition: Aluminum in a sample that is filtered through a 0.45 micron filter and acidified with HNO3. If <500 mg/L ICP-MS result is used. If >500 mg/L, ICP-AES result is used. Negative values indicate determinations less than the detection limit of the analytical method; the absolute value of the negative number is the detection limit. A null (or empty cell) means not analyzed. Attribute_Definition_Source: Metadata author Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: -0.002 Range_Domain_Maximum: 150 Attribute_Units_of_Measure: milligram per liter Attribute: Attribute_Label: Al_ra Attribute_Definition: Aluminum in an unfiltered sample that is acidified with HNO3. If <500 mg/L ICP-MS result is used. If >500 mg/L, ICP-AES result is used. Negative values indicate determinations less than the detection limit of the analytical method; the absolute value of the negative number is the detection limit. A null (or empty cell) means not analyzed. Attribute_Definition_Source: Metadata author Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: -0.002 Range_Domain_Maximum: 1650 Attribute_Units_of_Measure: milligram per liter Attribute: Attribute_Label: As_fa Attribute_Definition: Arsenic in a sample that is filtered through a 0.45 micron filter and acidified with HNO3. ICP-MS result is used. Negative values indicate determinations less than the detection limit of the analytical method; the absolute value of the negative number is the detection limit. A null (or empty cell) means not analyzed. Attribute_Definition_Source: Metadata author Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: -1 Range_Domain_Maximum: 6.7 Attribute_Units_of_Measure: microgram per liter Attribute: Attribute_Label: As_ra Attribute_Definition: Arsenic in an unfiltered sample that is acidified with HNO3. ICP-MS result is used. Negative values indicate determinations less than the detection limit of the analytical method; the absolute value of the negative number is the detection limit. A null (or empty cell) means not analyzed. Attribute_Definition_Source: Metadata author Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: -1 Range_Domain_Maximum: 7.7 Attribute_Units_of_Measure: microgram per liter Attribute: Attribute_Label: B_fa Attribute_Definition: Boron in a sample that is filtered through a 0.45 micrometer filter and acidified with HNO3. ICP-MS result is used. In 2006 the ICP-AES result was used. Negative values indicate determinations less than the detection limit of the analytical method; the absolute value of the negative number is the detection limit. A null (or empty cell) means not analyzed. Attribute_Definition_Source: Metadata author Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: -5 Range_Domain_Maximum: 37 Attribute_Units_of_Measure: microgram per liter Attribute: Attribute_Label: B_ra Attribute_Definition: Boron in a sample that is not filtered, but acidified with HNO3. ICP-MS result is used. In 2006 the ICP-AES result was used. Negative values indicate determinations less than the detection limit of the analytical method; the absolute value of the negative number is the detection limit. A null (or empty cell) means not analyzed. Attribute_Definition_Source: Metadata author Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: -5 Range_Domain_Maximum: 36 Attribute_Units_of_Measure: microgram per liter Attribute: Attribute_Label: Ba_fa Attribute_Definition: Barium in a sample that is filtered through a 0.45 micron filter and acidified with HNO3. ICP-AES result is used unless the result is below detection, in which case ICP-MS result is used. In 2007, the results of AES and MS were averaged, but the MS result was used if the AES was below detection. Negative values indicate determinations less than the detection limit of the analytical method; the absolute value of the negative number is the detection limit. A null (or empty cell) means not analyzed. Attribute_Definition_Source: Metadata author Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: -0.2 Range_Domain_Maximum: 170 Attribute_Units_of_Measure: microgram per liter Attribute: Attribute_Label: Ba_ra Attribute_Definition: Barium in an unfiltered sample that is acidified with HNO3. ICP-AES result is used unless the result is below detection, in which case ICP-MS result is used. In 2007, the results of AES and MS were averaged, but the MS result was used if the AES was below detection. Negative values indicate determinations less than the detection limit of the analytical method; the absolute value of the negative number is the detection limit. A null (or empty cell) means not analyzed. Attribute_Definition_Source: Metadata author Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: -0.2 Range_Domain_Maximum: 311 Attribute_Units_of_Measure: microgram per liter Attribute: Attribute_Label: Be_fa Attribute_Definition: Beryllium in a sample that is filtered through a 0.45 micrometer filter and acidified with HNO3. ICP-MS result is used. Negative values indicate determinations less than the detection limit of the analytical method; the absolute value of the negative number is the detection limit. A null (or empty cell) means not analyzed. Attribute_Definition_Source: Metadata author Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: -0.05 Range_Domain_Maximum: 19.6 Attribute_Units_of_Measure: microgram per liter Attribute: Attribute_Label: Be_ra Attribute_Definition: Beryllium in a sample that is not filtered, but acidified with HNO3. ICP-MS result is used. Negative values indicate determinations less than the detection limit of the analytical method; the absolute value of the negative number is the detection limit. A null (or empty cell) means not analyzed. Attribute_Definition_Source: Metadata author Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: -0.05 Range_Domain_Maximum: 18.9 Attribute_Units_of_Measure: microgram per liter Attribute: Attribute_Label: Bi_fa Attribute_Definition: Bismuth in a sample that is filtered through a 0.45 micrometer filter and acidified with HNO3. ICP-MS result is used. Negative values indicate determinations less than the detection limit of the analytical method; the absolute value of the negative number is the detection limit. A null (or empty cell) means not analyzed. Attribute_Definition_Source: Metadata author Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: -0.2 Range_Domain_Maximum: -0.2 Attribute_Units_of_Measure: microgram per liter Attribute: Attribute_Label: Bi_ra Attribute_Definition: Bismuth in a sample that is not filtered, but acidified with HNO3. ICP-MS result is used. Negative values indicate determinations less than the detection limit of the analytical method; the absolute value of the negative number is the detection limit. A null (or empty cell) means not analyzed. Attribute_Definition_Source: Metadata author Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: -0.2 Range_Domain_Maximum: 0.2 Attribute_Units_of_Measure: microgram per liter Attribute: Attribute_Label: Ca_fa Attribute_Definition: Calcium in a sample that is filtered through a 0.45 micron filter and acidified with HNO3. ICP-AES result is used unless the result is below detection, in which case ICP-MS result is used. In 2007, the results of AES and MS were averaged, but the MS result was used if the AES was below detection. Negative values indicate determinations less than the detection limit of the analytical method; the absolute value of the negative number is the detection limit. A null (or empty cell) means not analyzed. Attribute_Definition_Source: Metadata author Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: -0.2 Range_Domain_Maximum: 261 Attribute_Units_of_Measure: milligram per liter Attribute: Attribute_Label: Ca_ra Attribute_Definition: Calcium in an unfiltered sample that is acidified with HNO3. ICP-AES result is used unless the result is below detection, in which case ICP-MS result is used. In 2007, the results of AES and MS were averaged, but the MS result was used if the AES was below detection. Negative values indicate determinations less than the detection limit of the analytical method; the absolute value of the negative number is the detection limit. A null (or empty cell) means not analyzed. Attribute_Definition_Source: Metadata author Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: -0.2 Range_Domain_Maximum: 240 Attribute_Units_of_Measure: milligram per liter Attribute: Attribute_Label: Cd_fa Attribute_Definition: Cadmium in a sample that is filtered through a 0.45 micron filter and acidified with HNO3. ICP-MS result is used. Negative values indicate determinations less than the detection limit of the analytical method; the absolute value of the negative number is the detection limit. A null (or empty cell) means not analyzed. Attribute_Definition_Source: Metadata author Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: -0.02 Range_Domain_Maximum: 561 Attribute_Units_of_Measure: microgram per liter Attribute: Attribute_Label: Cd_ra Attribute_Definition: Cadmium in an unfiltered sample that is acidified with HNO3. ICP-MS result is used. Negative values indicate determinations less than the detection limit of the analytical method; the absolute value of the negative number is the detection limit. A null (or empty cell) means not analyzed. Attribute_Definition_Source: Metadata author Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: -0.02 Range_Domain_Maximum: 529 Attribute_Units_of_Measure: microgram per liter Attribute: Attribute_Label: Ce_fa Attribute_Definition: Cerium in a sample that is filtered through a 0.45 micron filter and acidified with HNO3. ICP-MS result is used. Negative values indicate determinations less than the detection limit of the analytical method; the absolute value of the negative number is the detection limit. A null (or empty cell) means not analyzed. Attribute_Definition_Source: Metadata author Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: -0.01 Range_Domain_Maximum: 948 Attribute_Units_of_Measure: microgram per liter Attribute: Attribute_Label: Ce_ra Attribute_Definition: Cerium in an unfiltered sample that is acidified with HNO3. ICP-MS result is used. Negative values indicate determinations less than the detection limit of the analytical method; the absolute value of the negative number is the detection limit. A null (or empty cell) means not analyzed. Attribute_Definition_Source: Metadata author Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: -0.01 Range_Domain_Maximum: 2250 Attribute_Units_of_Measure: microgram per liter Attribute: Attribute_Label: Co_fa Attribute_Definition: Cobalt in a sample that is filtered through a 0.45 micron filter and acidified with HNO3. ICP-MS result is used. Negative values indicate determinations less than the detection limit of the analytical method; the absolute value of the negative number is the detection limit. A null (or empty cell) means not analyzed. Attribute_Definition_Source: Metadata author Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: -0.02 Range_Domain_Maximum: 343 Attribute_Units_of_Measure: microgram per liter Attribute: Attribute_Label: Co_ra Attribute_Definition: Cobalt in an unfiltered sample that is acidified with HNO3. ICP-MS result is used. Negative values indicate determinations less than the detection limit of the analytical method; the absolute value of the negative number is the detection limit. A null (or empty cell) means not analyzed. Attribute_Definition_Source: Metadata author Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: -0.02 Range_Domain_Maximum: 388 Attribute_Units_of_Measure: microgram per liter Attribute: Attribute_Label: Cr_fa Attribute_Definition: Chromium in a sample that is filtered through a 0.45 micron filter and acidified with HNO3. ICP-MS result is used. Negative values indicate determinations less than the detection limit of the analytical method; the absolute value of the negative number is the detection limit. A null (or empty cell) means not analyzed. Attribute_Definition_Source: Metadata author Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: -1 Range_Domain_Maximum: 48.1 Attribute_Units_of_Measure: microgram per liter Attribute: Attribute_Label: Cr_ra Attribute_Definition: Chromium in an unfiltered sample that is acidified with HNO3. ICP-MS result is used. Negative values indicate determinations less than the detection limit of the analytical method; the absolute value of the negative number is the detection limit. A null (or empty cell) means not analyzed. Attribute_Definition_Source: Metadata author Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: -1 Range_Domain_Maximum: 55.3 Attribute_Units_of_Measure: microgram per liter Attribute: Attribute_Label: Cs_fa Attribute_Definition: Cesium in a sample that is filtered through a 0.45 micrometer filter and acidified with HNO3. ICP-MS result is used. Negative values indicate determinations less than the detection limit of the analytical method; the absolute value of the negative number is the detection limit. A null (or empty cell) means not analyzed. Attribute_Definition_Source: Metadata author Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: -0.02 Range_Domain_Maximum: 1.78 Attribute_Units_of_Measure: microgram per liter Attribute: Attribute_Label: Cs_ra Attribute_Definition: Cesium in a sample that is not filtered, but acidified with HNO3. ICP-MS result is used. Negative values indicate determinations less than the detection limit of the analytical method; the absolute value of the negative number is the detection limit. A null (or empty cell) means not analyzed. Attribute_Definition_Source: Metadata author Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: -0.02 Range_Domain_Maximum: 1.79 Attribute_Units_of_Measure: microgram per liter Attribute: Attribute_Label: Cu_fa Attribute_Definition: Copper in a sample that is filtered through a 0.45 micron filter and acidified with HNO3. ICP-AES result is used unless the result is below 100 ppb, in which case ICP-MS result is used. Negative values indicate determinations less than the detection limit of the analytical method; the absolute value of the negative number is the detection limit. A null (or empty cell) means not analyzed. Attribute_Definition_Source: Metadata author Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: -0.5 Range_Domain_Maximum: 17000 Attribute_Units_of_Measure: microgram per liter Attribute: Attribute_Label: Cu_ra Attribute_Definition: Copper in an unfiltered sample that is acidified with HNO3. ICP-AES result is used unless the result is below 100 ppb, in which case ICP-MS result is used. Negative values indicate determinations less than the detection limit of the analytical method; the absolute value of the negative number is the detection limit. A null (or empty cell) means not analyzed. Attribute_Definition_Source: Metadata author Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: -0.5 Range_Domain_Maximum: 17000 Attribute_Units_of_Measure: microgram per liter Attribute: Attribute_Label: Dy_fa Attribute_Definition: Dysprosium in a sample that is filtered through a 0.45 micrometer filter and acidified with HNO3. ICP-MS result is used. Negative values indicate determinations less than the detection limit of the analytical method; the absolute value of the negative number is the detection limit. A null (or empty cell) means not analyzed. Attribute_Definition_Source: Metadata author Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: -0.005 Range_Domain_Maximum: 149 Attribute_Units_of_Measure: microgram per liter Attribute: Attribute_Label: Dy_ra Attribute_Definition: Dysprosium in a sample that is not filtered, but acidified with HNO3. ICP-MS result is used. Negative values indicate determinations less than the detection limit of the analytical method; the absolute value of the negative number is the detection limit. A null (or empty cell) means not analyzed. Attribute_Definition_Source: Metadata author Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: -0.005 Range_Domain_Maximum: 150 Attribute_Units_of_Measure: microgram per liter Attribute: Attribute_Label: Er_fa Attribute_Definition: Erbium in a sample that is filtered through a 0.45 micrometer filter and acidified with HNO3. ICP-MS result is used. Negative values indicate determinations less than the detection limit of the analytical method; the absolute value of the negative number is the detection limit. A null (or empty cell) means not analyzed. Attribute_Definition_Source: Metadata author Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: -0.005 Range_Domain_Maximum: 71.3 Attribute_Units_of_Measure: microgram per liter Attribute: Attribute_Label: Er_ra Attribute_Definition: Erbium in a sample that is not filtered, but acidified with HNO3. ICP-MS result is used. Negative values indicate determinations less than the detection limit of the analytical method; the absolute value of the negative number is the detection limit. A null (or empty cell) means not analyzed. Attribute_Definition_Source: Metadata author Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: -0.005 Range_Domain_Maximum: 71.2 Attribute_Units_of_Measure: microgram per liter Attribute: Attribute_Label: Eu_fa Attribute_Definition: Europium in a sample that is filtered through a 0.45 micrometer filter and acidified with HNO3. ICP-MS result is used. Negative values indicate determinations less than the detection limit of the analytical method; the absolute value of the negative number is the detection limit. A null (or empty cell) means not analyzed. Attribute_Definition_Source: Metadata author Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: -0.005 Range_Domain_Maximum: 45.1 Attribute_Units_of_Measure: microgram per liter Attribute: Attribute_Label: Eu_ra Attribute_Definition: Europium in a sample that is not filtered, but acidified with HNO3. ICP-MS result is used. Negative values indicate determinations less than the detection limit of the analytical method; the absolute value of the negative number is the detection limit. A null (or empty cell) means not analyzed. Attribute_Definition_Source: Metadata author Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: -0.005 Range_Domain_Maximum: 45.3 Attribute_Units_of_Measure: microgram per liter Attribute: Attribute_Label: Fe_fa Attribute_Definition: Iron in a sample that is filtered through a 0.45 micron filter and acidified with HNO3. ICP-AES result is used unless the result is below 20 ppb, in which case ICP-MS result is used. Negative values indicate determinations less than the detection limit of the analytical method; the absolute value of the negative number is the detection limit. A null (or empty cell) means not analyzed. Attribute_Definition_Source: Metadata author Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: -50 Range_Domain_Maximum: 141000 Attribute_Units_of_Measure: microgram per liter Attribute: Attribute_Label: Fe_ra Attribute_Definition: Iron in an unfiltered sample that is acidified with HNO3. ICP-AES result is used unless the result is below 20 ppb, in which case ICP-MS result is used. Negative values indicate determinations less than the detection limit of the analytical method; the absolute value of the negative number is the detection limit. A null (or empty cell) means not analyzed. Attribute_Definition_Source: Metadata author Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: -50 Range_Domain_Maximum: 190000 Attribute_Units_of_Measure: microgram per liter Attribute: Attribute_Label: Ga_fa Attribute_Definition: Gallium in a sample that is filtered through a 0.45 micrometer filter and acidified with HNO3. ICP-MS result is used. Negative values indicate determinations less than the detection limit of the analytical method; the absolute value of the negative number is the detection limit. A null (or empty cell) means not analyzed. Attribute_Definition_Source: Metadata author Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: -0.05 Range_Domain_Maximum: 6.3 Attribute_Units_of_Measure: microgram per liter Attribute: Attribute_Label: Ga_ra Attribute_Definition: Gallium in a sample that is not filtered, but acidified with HNO3. ICP-MS result is used. Negative values indicate determinations less than the detection limit of the analytical method; the absolute value of the negative number is the detection limit. A null (or empty cell) means not analyzed. Attribute_Definition_Source: Metadata author Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: -0.05 Range_Domain_Maximum: 6.8 Attribute_Units_of_Measure: microgram per liter Attribute: Attribute_Label: Gd_fa Attribute_Definition: Gadolinium in a sample that is filtered through a 0.45 micrometer filter and acidified with HNO3. ICP-MS result is used. Negative values indicate determinations less than the detection limit of the analytical method; the absolute value of the negative number is the detection limit. A null (or empty cell) means not analyzed. Attribute_Definition_Source: Metadata author Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: -0.005 Range_Domain_Maximum: 214 Attribute_Units_of_Measure: microgram per liter Attribute: Attribute_Label: Gd_ra Attribute_Definition: Gadolinium in a sample that is not filtered, but acidified with HNO3. ICP-MS result is used. Negative values indicate determinations less than the detection limit of the analytical method; the absolute value of the negative number is the detection limit. A null (or empty cell) means not analyzed. Attribute_Definition_Source: Metadata author Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: -0.005 Range_Domain_Maximum: 204 Attribute_Units_of_Measure: microgram per liter Attribute: Attribute_Label: Ho_fa Attribute_Definition: Holmium in a sample that is filtered through a 0.45 micrometer filter and acidified with HNO3. ICP-MS result is used. Negative values indicate determinations less than the detection limit of the analytical method; the absolute value of the negative number is the detection limit. A null (or empty cell) means not analyzed. Attribute_Definition_Source: Metadata author Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: -0.005 Range_Domain_Maximum: 28.2 Attribute_Units_of_Measure: microgram per liter Attribute: Attribute_Label: Ho_ra Attribute_Definition: Holmium in a sample that is not filtered, but acidified with HNO3. ICP-MS result is used. Negative values indicate determinations less than the detection limit of the analytical method; the absolute value of the negative number is the detection limit. A null (or empty cell) means not analyzed. Attribute_Definition_Source: Metadata author Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: -0.005 Range_Domain_Maximum: 27.5 Attribute_Units_of_Measure: microgram per liter Attribute: Attribute_Label: K_fa Attribute_Definition: Potassium in a sample that is filtered through a 0.45 micron filter and acidified with HNO3. ICP-AES result is used. In 2007, the results of AES and MS were averaged, but the MS result was used if the AES was below detection. Negative values indicate determinations less than the detection limit of the analytical method; the absolute value of the negative number is the detection limit. A null (or empty cell) means not analyzed. Attribute_Definition_Source: Metadata author Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: -0.1 Range_Domain_Maximum: 8.62 Attribute_Units_of_Measure: milligram per liter Attribute: Attribute_Label: K_ra Attribute_Definition: Potassium in an unfiltered sample that is acidified with HNO3. ICP-AES result is used. In 2007, the results of AES and MS were averaged, but the MS result was used if the AES was below detection. Negative values indicate determinations less than the detection limit of the analytical method; the absolute value of the negative number is the detection limit. A null (or empty cell) means not analyzed. Attribute_Definition_Source: Metadata author Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: -0.1 Range_Domain_Maximum: 9.5 Attribute_Units_of_Measure: milligram per liter Attribute: Attribute_Label: La_fa Attribute_Definition: Lanthanum in a sample that is filtered through a 0.45 micron filter and acidified with HNO3. ICP-MS result is used. Negative values indicate determinations less than the detection limit of the analytical method; the absolute value of the negative number is the detection limit. A null (or empty cell) means not analyzed. Attribute_Definition_Source: Metadata author Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: -0.01 Range_Domain_Maximum: 544 Attribute_Units_of_Measure: microgram per liter Attribute: Attribute_Label: La_ra Attribute_Definition: Lanthanum in an unfiltered sample that is acidified with HNO3. ICP-MS result is used. Negative values indicate determinations less than the detection limit of the analytical method; the absolute value of the negative number is the detection limit. A null (or empty cell) means not analyzed. Attribute_Definition_Source: Metadata author Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: -0.01 Range_Domain_Maximum: 761 Attribute_Units_of_Measure: microgram per liter Attribute: Attribute_Label: Li_fa Attribute_Definition: Lithium in a sample that is filtered through a 0.45 micron filter and acidified with HNO3. ICP-MS result is used. Negative values indicate determinations less than the detection limit of the analytical method; the absolute value of the negative number is the detection limit. A null (or empty cell) means not analyzed. Attribute_Definition_Source: Metadata author Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: -0.1 Range_Domain_Maximum: 103 Attribute_Units_of_Measure: microgram per liter Attribute: Attribute_Label: Li_ra Attribute_Definition: Lithium in an unfiltered sample that is acidified with HNO3. ICP-MS result is used. Negative values indicate determinations less than the detection limit of the analytical method; the absolute value of the negative number is the detection limit. A null (or empty cell) means not analyzed. Attribute_Definition_Source: Metadata author Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: -0.1 Range_Domain_Maximum: 101 Attribute_Units_of_Measure: microgram per liter Attribute: Attribute_Label: Lu_fa Attribute_Definition: Lutetium in a sample that is filtered through a 0.45 micrometer filter and acidified with HNO3. ICP-MS result is used. Negative values indicate determinations less than the detection limit of the analytical method; the absolute value of the negative number is the detection limit. A null (or empty cell) means not analyzed. Attribute_Definition_Source: Metadata author Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: -0.1 Range_Domain_Maximum: 7.2 Attribute_Units_of_Measure: microgram per liter Attribute: Attribute_Label: Lu_ra Attribute_Definition: Lutetium in a sample that is not filtered, but acidified with HNO3. ICP-MS result is used. Negative values indicate determinations less than the detection limit of the analytical method; the absolute value of the negative number is the detection limit. A null (or empty cell) means not analyzed. Attribute_Definition_Source: Metadata author Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: -0.1 Range_Domain_Maximum: 7.1 Attribute_Units_of_Measure: microgram per liter Attribute: Attribute_Label: Mg_fa Attribute_Definition: Magnesium in a sample that is filtered through a 0.45 micron filter and acidified with HNO3. ICP-AES result is used. In 2007, the results of AES and MS were averaged, but the MS result was used if the AES was below detection. Negative values indicate determinations less than the detection limit of the analytical method; the absolute value of the negative number is the detection limit. A null (or empty cell) means not analyzed. Attribute_Definition_Source: Metadata author Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: -0.1 Range_Domain_Maximum: 113 Attribute_Units_of_Measure: milligram per liter Attribute: Attribute_Label: Mg_ra Attribute_Definition: Magnesium in an unfiltered sample that is acidified with HNO3. ICP-AES result is used. In 2007, the results of AES and MS were averaged, but the MS result was used if the AES was below detection. Negative values indicate determinations less than the detection limit of the analytical method; the absolute value of the negative number is the detection limit. A null (or empty cell) means not analyzed. Attribute_Definition_Source: Metadata author Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: -0.1 Range_Domain_Maximum: 104 Attribute_Units_of_Measure: milligram per liter Attribute: Attribute_Label: Mn_fa Attribute_Definition: Manganese in a sample that is filtered through a 0.45 micron filter and acidified with HNO3. If <50 ug/L ICP-MS result is used. If >50 ug/L, ICP-AES result is used. In 2007, the results of AES and MS were averaged if both were above detection limits, but the MS result was used if the AES was below detection. Negative values indicate determinations less than the detection limit of the analytical method; the absolute value of the negative number is the detection limit. A null (or empty cell) means not analyzed. Attribute_Definition_Source: Metadata author Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: -0.2 Range_Domain_Maximum: 75400 Attribute_Units_of_Measure: microgram per liter Attribute: Attribute_Label: Mn_ra Attribute_Definition: Manganese in an unfiltered sample that is acidified with HNO3. If <50 ug/L ICP-MS result is used. If >50 ug/L, ICP-AES result is used. In 2007, the results of AES and MS were averaged if both were above detection limits, but the MS result was used if the AES was below detection. Negative values indicate determinations less than the detection limit of the analytical method; the absolute value of the negative number is the detection limit. A null (or empty cell) means not analyzed. Attribute_Definition_Source: Metadata author Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: -0.2 Range_Domain_Maximum: 73300 Attribute_Units_of_Measure: microgram per liter Attribute: Attribute_Label: Mo_fa Attribute_Definition: Molybdenum in a sample that is filtered through a 0.45 micron filter and acidified with HNO3. ICP-MS result is used. Negative values indicate determinations less than the detection limit of the analytical method; the absolute value of the negative number is the detection limit. A null (or empty cell) means not analyzed. Attribute_Definition_Source: Metadata author Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: -2 Range_Domain_Maximum: 17 Attribute_Units_of_Measure: microgram per liter Attribute: Attribute_Label: Mo_ra Attribute_Definition: Molybdenum in an unfiltered sample that is acidified with HNO3. ICP-MS result is used. Negative values indicate determinations less than the detection limit of the analytical method; the absolute value of the negative number is the detection limit. A null (or empty cell) means not analyzed. Attribute_Definition_Source: Metadata author Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: -2 Range_Domain_Maximum: 16.6 Attribute_Units_of_Measure: microgram per liter Attribute: Attribute_Label: Na_fa Attribute_Definition: Sodium in a sample that is filtered through a 0.45 micron filter and acidified with HNO3. ICP-AES result is used unless below detection, in which case ICP-MS is used if it is above detection limit. In 2007, the results of AES and MS were averaged, but the MS result was used if the AES was below detection. Negative values indicate determinations less than the detection limit of the analytical method; the absolute value of the negative number is the detection limit. A null (or empty cell) means not analyzed. Attribute_Definition_Source: Metadata author Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: -0.01 Range_Domain_Maximum: 61.6 Attribute_Units_of_Measure: milligram per liter Attribute: Attribute_Label: Na_ra Attribute_Definition: Sodium in an unfiltered sample that is acidified with HNO3. ICP-AES result is used unless below detection, in which case ICP-MS is used if it is above detection limit. In 2007, the results of AES and MS were averaged, but the MS result was used if the AES was below detection. Negative values indicate determinations less than the detection limit of the analytical method; the absolute value of the negative number is the detection limit. A null (or empty cell) means not analyzed. Attribute_Definition_Source: Metadata author Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: -0.01 Range_Domain_Maximum: 59 Attribute_Units_of_Measure: milligram per liter Attribute: Attribute_Label: Nb_fa Attribute_Definition: Niobium in a sample that is filtered through a 0.45 micrometer filter and acidified with HNO3. ICP-MS result is used. Negative values indicate determinations less than the detection limit of the analytical method; the absolute value of the negative number is the detection limit. A null (or empty cell) means not analyzed. Attribute_Definition_Source: Metadata author Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: -0.2 Range_Domain_Maximum: 0.65 Attribute_Units_of_Measure: microgram per liter Attribute: Attribute_Label: Nb_ra Attribute_Definition: Niobium in a sample that is not filtered, but acidified with HNO3. ICP-MS result is used. Negative values indicate determinations less than the detection limit of the analytical method; the absolute value of the negative number is the detection limit. A null (or empty cell) means not analyzed. Attribute_Definition_Source: Metadata author Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: -0.2 Range_Domain_Maximum: 1.68 Attribute_Units_of_Measure: microgram per liter Attribute: Attribute_Label: Nd_fa Attribute_Definition: Neodymium in a sample that is filtered through a 0.45 micrometer filter and acidified with HNO3. ICP-MS result is used. Negative values indicate determinations less than the detection limit of the analytical method; the absolute value of the negative number is the detection limit. A null (or empty cell) means not analyzed. Attribute_Definition_Source: Metadata author Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: -0.01 Range_Domain_Maximum: 803 Attribute_Units_of_Measure: microgram per liter Attribute: Attribute_Label: Nd_ra Attribute_Definition: Neodymium in a sample that is not filtered, but acidified with HNO3. ICP-MS result is used. Negative values indicate determinations less than the detection limit of the analytical method; the absolute value of the negative number is the detection limit. A null (or empty cell) means not analyzed. Attribute_Definition_Source: Metadata author Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: -0.01 Range_Domain_Maximum: 771 Attribute_Units_of_Measure: microgram per liter Attribute: Attribute_Label: Ni_fa Attribute_Definition: Nickel in a sample that is filtered through a 0.45 micron filter and acidified with HNO3. ICP-MS result is used unless result is greater than 50 ug/L, in which case ICP-AES is used. Negative values indicate determinations less than the detection limit of the analytical method; the absolute value of the negative number is the detection limit. A null (or empty cell) means not analyzed. Attribute_Definition_Source: Metadata author Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: -0.4 Range_Domain_Maximum: 665 Attribute_Units_of_Measure: microgram per liter Attribute: Attribute_Label: Ni_ra Attribute_Definition: Nickel in an unfiltered sample that is acidified with HNO3. ICP-MS result is used unless result is greater than 50 ug/L, in which case ICP-AES is used. Negative values indicate determinations less than the detection limit of the analytical method; the absolute value of the negative number is the detection limit. A null (or empty cell) means not analyzed. Attribute_Definition_Source: Metadata author Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: -0.4 Range_Domain_Maximum: 667 Attribute_Units_of_Measure: microgram per liter Attribute: Attribute_Label: P_fa Attribute_Definition: Phosphorous (total) in a sample that is filtered through a 0.45 micron filter and acidified with HNO3. ICP-MS result is used. Negative values indicate determinations less than the detection limit of the analytical method; the absolute value of the negative number is the detection limit. A null (or empty cell) means not analyzed. Attribute_Definition_Source: Metadata author Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: -0.01 Range_Domain_Maximum: 3.4 Attribute_Units_of_Measure: milligram per liter Attribute: Attribute_Label: P_ra Attribute_Definition: Phosphorous (total) in an unfiltered sample that is acidified with HNO3. ICP-MS result is used. Negative values indicate determinations less than the detection limit of the analytical method; the absolute value of the negative number is the detection limit. A null (or empty cell) means not analyzed. Attribute_Definition_Source: Metadata author Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: -0.01 Range_Domain_Maximum: 3.5 Attribute_Units_of_Measure: milligram per liter Attribute: Attribute_Label: Pb_fa Attribute_Definition: Lead in a sample that is filtered through a 0.45 micron filter and acidified with HNO3. ICP-MS result is used. Negative values indicate determinations less than the detection limit of the analytical method; the absolute value of the negative number is the detection limit. A null (or empty cell) means not analyzed. Attribute_Definition_Source: Metadata author Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: -0.05 Range_Domain_Maximum: 148 Attribute_Units_of_Measure: microgram per liter Attribute: Attribute_Label: Pb_ra Attribute_Definition: Lead in an unfiltered sample that is acidified with HNO3. ICP-MS result is used. Negative values indicate determinations less than the detection limit of the analytical method; the absolute value of the negative number is the detection limit. A null (or empty cell) means not analyzed. Attribute_Definition_Source: Metadata author Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: -0.05 Range_Domain_Maximum: 152 Attribute_Units_of_Measure: microgram per liter Attribute: Attribute_Label: Pr_fa Attribute_Definition: Praseodymium in a sample that is filtered through a 0.45 micrometer filter and acidified with HNO3. ICP-MS result is used. Negative values indicate determinations less than the detection limit of the analytical method; the absolute value of the negative number is the detection limit. A null (or empty cell) means not analyzed. Attribute_Definition_Source: Metadata author Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: -0.01 Range_Domain_Maximum: 195 Attribute_Units_of_Measure: microgram per liter Attribute: Attribute_Label: Pr_ra Attribute_Definition: Praseodymium in a sample that is not filtered, but acidified with HNO3. ICP-MS result is used. Negative values indicate determinations less than the detection limit of the analytical method; the absolute value of the negative number is the detection limit. A null (or empty cell) means not analyzed. Attribute_Definition_Source: Metadata author Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: -0.01 Range_Domain_Maximum: 210 Attribute_Units_of_Measure: microgram per liter Attribute: Attribute_Label: Rb_fa Attribute_Definition: Rubidium in a sample that is filtered through a 0.45 micron filter and acidified with HNO3. ICP-MS result is used. Negative values indicate determinations less than the detection limit of the analytical method; the absolute value of the negative number is the detection limit. A null (or empty cell) means not analyzed. Attribute_Definition_Source: Metadata author Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: -0.01 Range_Domain_Maximum: 23.1 Attribute_Units_of_Measure: microgram per liter Attribute: Attribute_Label: Rb_ra Attribute_Definition: Rubidium in an unfiltered sample that is acidified with HNO3. ICP-MS result is used. Negative values indicate determinations less than the detection limit of the analytical method; the absolute value of the negative number is the detection limit. A null (or empty cell) means not analyzed. Attribute_Definition_Source: Metadata author Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: -0.01 Range_Domain_Maximum: 33.7 Attribute_Units_of_Measure: microgram per liter Attribute: Attribute_Label: Sb_fa Attribute_Definition: Antimony in a sample that is filtered through a 0.45 micrometer filter and acidified with HNO3. ICP-MS result is used. Negative values indicate determinations less than the detection limit of the analytical method; the absolute value of the negative number is the detection limit. A null (or empty cell) means not analyzed. Attribute_Definition_Source: Metadata author Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: -0.3 Range_Domain_Maximum: 1.55 Attribute_Units_of_Measure: microgram per liter Attribute: Attribute_Label: Sb_ra Attribute_Definition: Antimony in a sample that is not filtered, but acidified with HNO3. ICP-MS result is used. Negative values indicate determinations less than the detection limit of the analytical method; the absolute value of the negative number is the detection limit. A null (or empty cell) means not analyzed. Attribute_Definition_Source: Metadata author Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: -0.3 Range_Domain_Maximum: 1.11 Attribute_Units_of_Measure: microgram per liter Attribute: Attribute_Label: Sc_fa Attribute_Definition: Scandium in a sample that is filtered through a 0.45 micrometer filter and acidified with HNO3. ICP-MS result is used. Negative values indicate determinations less than the detection limit of the analytical method; the absolute value of the negative number is the detection limit. A null (or empty cell) means not analyzed. Attribute_Definition_Source: Metadata author Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: -0.6 Range_Domain_Maximum: 142 Attribute_Units_of_Measure: microgram per liter Attribute: Attribute_Label: Sc_ra Attribute_Definition: Scandium in a sample that is not filtered, but acidified with HNO3. ICP-MS result is used. Negative values indicate determinations less than the detection limit of the analytical method; the absolute value of the negative number is the detection limit. A null (or empty cell) means not analyzed. Attribute_Definition_Source: Metadata author Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: -0.6 Range_Domain_Maximum: 153 Attribute_Units_of_Measure: microgram per liter Attribute: Attribute_Label: Se_fa Attribute_Definition: Selenium in a sample that is filtered through a 0.45 micrometer filter and acidified with HNO3. ICP-MS result is used. Negative values indicate determinations less than the detection limit of the analytical method; the absolute value of the negative number is the detection limit. A null (or empty cell) means not analyzed. Attribute_Definition_Source: Metadata author Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: -1 Range_Domain_Maximum: 11.6 Attribute_Units_of_Measure: microgram per liter Attribute: Attribute_Label: Se_ra Attribute_Definition: Selenium in a sample that is not filtered, but acidified with HNO3. ICP-MS result is used. Negative values indicate determinations less than the detection limit of the analytical method; the absolute value of the negative number is the detection limit. A null (or empty cell) means not analyzed. Attribute_Definition_Source: Metadata author Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: -1 Range_Domain_Maximum: 11.9 Attribute_Units_of_Measure: microgram per liter Attribute: Attribute_Label: SiO2_fa Attribute_Definition: Silica in a sample that is filtered through a 0.45 micron filter and acidified with HNO3. ICP-MS result is used. Negative values indicate determinations less than the detection limit of the analytical method; the absolute value of the negative number is the detection limit. A null (or empty cell) means not analyzed. Attribute_Definition_Source: Metadata author Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: -0.2 Range_Domain_Maximum: 98 Attribute_Units_of_Measure: milligram per liter Attribute: Attribute_Label: SiO2_ra Attribute_Definition: Silica in an unfiltered sample that is acidified with HNO3. ICP-MS result is used. Negative values indicate determinations less than the detection limit of the analytical method; the absolute value of the negative number is the detection limit. A null (or empty cell) means not analyzed. Attribute_Definition_Source: Metadata author Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: -0.2 Range_Domain_Maximum: 130 Attribute_Units_of_Measure: milligram per liter Attribute: Attribute_Label: Sm_fa Attribute_Definition: Samarium in a sample that is filtered through a 0.45 micrometer filter and acidified with HNO3. ICP-MS result is used. Negative values indicate determinations less than the detection limit of the analytical method; the absolute value of the negative number is the detection limit. A null (or empty cell) means not analyzed. Attribute_Definition_Source: Metadata author Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: -0.01 Range_Domain_Maximum: 174 Attribute_Units_of_Measure: microgram per liter Attribute: Attribute_Label: Sm_ra Attribute_Definition: Samarium in a sample that is not filtered, but acidified with HNO3. ICP-MS result is used. Negative values indicate determinations less than the detection limit of the analytical method; the absolute value of the negative number is the detection limit. A null (or empty cell) means not analyzed. Attribute_Definition_Source: Metadata author Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: -0.01 Range_Domain_Maximum: 177 Attribute_Units_of_Measure: microgram per liter Attribute: Attribute_Label: Sr_fa Attribute_Definition: Strontium in a sample that is filtered through a 0.45 micron filter and acidified with HNO3. ICP-MS result is used. Negative values indicate determinations less than the detection limit of the analytical method; the absolute value of the negative number is the detection limit. A null (or empty cell) means not analyzed. Attribute_Definition_Source: Metadata author Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: -0.5 Range_Domain_Maximum: 6200 Attribute_Units_of_Measure: microgram per liter Attribute: Attribute_Label: Sr_ra Attribute_Definition: Strontium in an unfiltered sample that is acidified with HNO3. ICP-MS result is used. Negative values indicate determinations less than the detection limit of the analytical method; the absolute value of the negative number is the detection limit. A null (or empty cell) means not analyzed. Attribute_Definition_Source: Metadata author Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: -0.5 Range_Domain_Maximum: 6130 Attribute_Units_of_Measure: microgram per liter Attribute: Attribute_Label: Ta_fa Attribute_Definition: Tantalum in a sample that is filtered through a 0.45 micrometer filter and acidified with HNO3. ICP-MS result is used. Negative values indicate determinations less than the detection limit of the analytical method; the absolute value of the negative number is the detection limit. A null (or empty cell) means not analyzed. Attribute_Definition_Source: Metadata author Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: -0.02 Range_Domain_Maximum: 0.81 Attribute_Units_of_Measure: microgram per liter Attribute: Attribute_Label: Ta_ra Attribute_Definition: Tantalum in a sample that is not filtered, but acidified with HNO3. ICP-MS result is used. Negative values indicate determinations less than the detection limit of the analytical method; the absolute value of the negative number is the detection limit. A null (or empty cell) means not analyzed. Attribute_Definition_Source: Metadata author Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: -0.02 Range_Domain_Maximum: 0.66 Attribute_Units_of_Measure: microgram per liter Attribute: Attribute_Label: Tb_fa Attribute_Definition: Terbium in a sample that is filtered through a 0.45 micrometer filter and acidified with HNO3. ICP-MS result is used. Negative values indicate determinations less than the detection limit of the analytical method; the absolute value of the negative number is the detection limit. A null (or empty cell) means not analyzed. Attribute_Definition_Source: Metadata author Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: -0.005 Range_Domain_Maximum: 29 Attribute_Units_of_Measure: microgram per liter Attribute: Attribute_Label: Tb_ra Attribute_Definition: Terbium in a sample that is not filtered, but acidified with HNO3. ICP-MS result is used. Negative values indicate determinations less than the detection limit of the analytical method; the absolute value of the negative number is the detection limit. A null (or empty cell) means not analyzed. Attribute_Definition_Source: Metadata author Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: -0.005 Range_Domain_Maximum: 29.4 Attribute_Units_of_Measure: microgram per liter Attribute: Attribute_Label: Th_fa Attribute_Definition: Thorium in a sample that is filtered through a 0.45 micrometer filter and acidified with HNO3. ICP-MS result is used. Negative values indicate determinations less than the detection limit of the analytical method; the absolute value of the negative number is the detection limit. A null (or empty cell) means not analyzed. Attribute_Definition_Source: Metadata author Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: -0.2 Range_Domain_Maximum: 660 Attribute_Units_of_Measure: microgram per liter Attribute: Attribute_Label: Th_ra Attribute_Definition: Thorium in a sample that is not filtered, but acidified with HNO3. ICP-MS result is used. Negative values indicate determinations less than the detection limit of the analytical method; the absolute value of the negative number is the detection limit. A null (or empty cell) means not analyzed. Attribute_Definition_Source: Metadata author Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: -0.2 Range_Domain_Maximum: 737 Attribute_Units_of_Measure: microgram per liter Attribute: Attribute_Label: Ti_fa Attribute_Definition: Titanium in a sample that is filtered through a 0.45 micron filter and acidified with HNO3. ICP-MS result is used. Negative values indicate determinations less than the detection limit of the analytical method; the absolute value of the negative number is the detection limit. A null (or empty cell) means not analyzed. Attribute_Definition_Source: Metadata author Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: -0.5 Range_Domain_Maximum: 26.2 Attribute_Units_of_Measure: microgram per liter Attribute: Attribute_Label: Ti_ra Attribute_Definition: Titanium in an unfiltered sample that is acidified with HNO3. ICP-MS result is used. Negative values indicate determinations less than the detection limit of the analytical method; the absolute value of the negative number is the detection limit. A null (or empty cell) means not analyzed. Attribute_Definition_Source: Metadata author Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: -0.5 Range_Domain_Maximum: 336 Attribute_Units_of_Measure: microgram per liter Attribute: Attribute_Label: Tl_fa Attribute_Definition: Thallium in a sample that is filtered through a 0.45 micrometer filter and acidified with HNO3. ICP-MS result is used. Negative values indicate determinations less than the detection limit of the analytical method; the absolute value of the negative number is the detection limit. A null (or empty cell) means not analyzed. Attribute_Definition_Source: Metadata author Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: -0.1 Range_Domain_Maximum: 0.94 Attribute_Units_of_Measure: microgram per liter Attribute: Attribute_Label: Tl_ra Attribute_Definition: Thallium in a sample that is not filtered, but acidified with HNO3. ICP-MS result is used. Negative values indicate determinations less than the detection limit of the analytical method; the absolute value of the negative number is the detection limit. A null (or empty cell) means not analyzed. Attribute_Definition_Source: Metadata author Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: -0.1 Range_Domain_Maximum: 0.8 Attribute_Units_of_Measure: microgram per liter Attribute: Attribute_Label: Tm_fa Attribute_Definition: Thulium in a sample that is filtered through a 0.45 micrometer filter and acidified with HNO3. ICP-MS result is used. Negative values indicate determinations less than the detection limit of the analytical method; the absolute value of the negative number is the detection limit. A null (or empty cell) means not analyzed. Attribute_Definition_Source: Metadata author Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: -0.005 Range_Domain_Maximum: 8.47 Attribute_Units_of_Measure: microgram per liter Attribute: Attribute_Label: Tm_ra Attribute_Definition: Thulium in a sample that is not filtered, but acidified with HNO3. ICP-MS result is used. Negative values indicate determinations less than the detection limit of the analytical method; the absolute value of the negative number is the detection limit. A null (or empty cell) means not analyzed. Attribute_Definition_Source: Metadata author Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: -0.005 Range_Domain_Maximum: 8.49 Attribute_Units_of_Measure: microgram per liter Attribute: Attribute_Label: U_fa Attribute_Definition: Uranium in a sample that is filtered through a 0.45 micron filter and acidified with HNO3. ICP-MS result is used. Negative values indicate determinations less than the detection limit of the analytical method; the absolute value of the negative number is the detection limit. A null (or empty cell) means not analyzed. Attribute_Definition_Source: Metadata author Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: -0.1 Range_Domain_Maximum: 719 Attribute_Units_of_Measure: microgram per liter Attribute: Attribute_Label: U_ra Attribute_Definition: Uranium in an unfiltered sample that is acidified with HNO3. ICP-MS result is used. Negative values indicate determinations less than the detection limit of the analytical method; the absolute value of the negative number is the detection limit. A null (or empty cell) means not analyzed. Attribute_Definition_Source: Metadata author Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: -0.1 Range_Domain_Maximum: 701 Attribute_Units_of_Measure: microgram per liter Attribute: Attribute_Label: V_fa Attribute_Definition: Vanadium in a sample that is filtered through a 0.45 micrometer filter and acidified with HNO3. ICP-MS result is used. Negative values indicate determinations less than the detection limit of the analytical method; the absolute value of the negative number is the detection limit. A null (or empty cell) means not analyzed. Attribute_Definition_Source: Metadata author Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: -0.5 Range_Domain_Maximum: 2 Attribute_Units_of_Measure: microgram per liter Attribute: Attribute_Label: V_ra Attribute_Definition: Vanadium in a sample that is not filtered, but acidified with HNO3. ICP-MS result is used. Negative values indicate determinations less than the detection limit of the analytical method; the absolute value of the negative number is the detection limit. A null (or empty cell) means not analyzed. Attribute_Definition_Source: Metadata author Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: -0.5 Range_Domain_Maximum: 7.2 Attribute_Units_of_Measure: microgram per liter Attribute: Attribute_Label: W_fa Attribute_Definition: Tungsten in a sample that is filtered through a 0.45 micrometer filter and acidified with HNO3. ICP-MS result is used. Negative values indicate determinations less than the detection limit of the analytical method; the absolute value of the negative number is the detection limit. A null (or empty cell) means not analyzed. Attribute_Definition_Source: Metadata author Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: -0.5 Range_Domain_Maximum: -0.5 Attribute_Units_of_Measure: microgram per liter Attribute: Attribute_Label: W_ra Attribute_Definition: Tungsten in a sample that is not filtered, but acidified with HNO3. ICP-MS result is used. Negative values indicate determinations less than the detection limit of the analytical method; the absolute value of the negative number is the detection limit. A null (or empty cell) means not analyzed. Attribute_Definition_Source: Metadata author Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: -0.5 Range_Domain_Maximum: -0.5 Attribute_Units_of_Measure: microgram per liter Attribute: Attribute_Label: Y_fa Attribute_Definition: Yttrium in a sample that is filtered through a 0.45 micron filter and acidified with HNO3. ICP-MS result is used. Negative values indicate determinations less than the detection limit of the analytical method; the absolute value of the negative number is the detection limit. A null (or empty cell) means not analyzed. Attribute_Definition_Source: Metadata author Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: -0.01 Range_Domain_Maximum: 753 Attribute_Units_of_Measure: microgram per liter Attribute: Attribute_Label: Y_ra Attribute_Definition: Yttrium in an unfiltered sample that is acidified with HNO3. ICP-MS result is used. Negative values indicate determinations less than the detection limit of the analytical method; the absolute value of the negative number is the detection limit. A null (or empty cell) means not analyzed. Attribute_Definition_Source: Metadata author Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: -0.01 Range_Domain_Maximum: 782 Attribute_Units_of_Measure: microgram per liter Attribute: Attribute_Label: Yb_fa Attribute_Definition: Ytterbium in a sample that is filtered through a 0.45 micrometer filter and acidified with HNO3. ICP-MS result is used. Negative values indicate determinations less than the detection limit of the analytical method; the absolute value of the negative number is the detection limit. A null (or empty cell) means not analyzed. Attribute_Definition_Source: Metadata author Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: -0.005 Range_Domain_Maximum: 51.5 Attribute_Units_of_Measure: microgram per liter Attribute: Attribute_Label: Yb_ra Attribute_Definition: Ytterbium in a sample that is not filtered, but acidified with HNO3. ICP-MS result is used. Negative values indicate determinations less than the detection limit of the analytical method; the absolute value of the negative number is the detection limit. A null (or empty cell) means not analyzed. Attribute_Definition_Source: Metadata author Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: -0.005 Range_Domain_Maximum: 50.7 Attribute_Units_of_Measure: microgram per liter Attribute: Attribute_Label: Zn_fa Attribute_Definition: Zinc in a sample that is filtered through a 0.45 micron filter and acidified with HNO3. ICP-MS result is used. Negative values indicate determinations less than the detection limit of the analytical method; the absolute value of the negative number is the detection limit. A null (or empty cell) means not analyzed. Attribute_Definition_Source: Metadata author Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: -0.5 Range_Domain_Maximum: 118000 Attribute_Units_of_Measure: microgram per liter Attribute: Attribute_Label: Zn_ra Attribute_Definition: Zinc in an unfiltered sample that is acidified with HNO3. ICP-MS result is used. Negative values indicate determinations less than the detection limit of the analytical method; the absolute value of the negative number is the detection limit. A null (or empty cell) means not analyzed. Attribute_Definition_Source: Metadata author Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: -0.5 Range_Domain_Maximum: 134000 Attribute_Units_of_Measure: microgram per liter Attribute: Attribute_Label: Zr_fa Attribute_Definition: Zirconium in a sample that is filtered through a 0.45 micrometer filter and acidified with HNO3. ICP-MS result is used. Negative values indicate determinations less than the detection limit of the analytical method; the absolute value of the negative number is the detection limit. A null (or empty cell) means not analyzed. Attribute_Definition_Source: Metadata author Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: -0.2 Range_Domain_Maximum: 0.71 Attribute_Units_of_Measure: microgram per liter Attribute: Attribute_Label: Zr_ra Attribute_Definition: Zirconium in a sample that is not filtered, but acidified with HNO3. ICP-MS result is used. Negative values indicate determinations less than the detection limit of the analytical method; the absolute value of the negative number is the detection limit. A null (or empty cell) means not analyzed. Attribute_Definition_Source: Metadata author Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: -0.2 Range_Domain_Maximum: 0.89 Attribute_Units_of_Measure: microgram per liter Attribute: Attribute_Label: LAB_ID_Alkalinity Attribute_Definition: Unique identifier assigned by the laboratory to each sample analyzed for alkalinity. Attribute_Definition_Source: Metadata author Attribute_Domain_Values: Unrepresentable_Domain: Alpha numeric number of no more than 10 characters Attribute: Attribute_Label: JOB_ID_Alkalinity Attribute_Definition: Identifier assigned by the laboratory to each batch or job of samples analyzed for alkalinity. Attribute_Definition_Source: Metadata author Attribute_Domain_Values: Unrepresentable_Domain: Alpha numeric number of no more than 10 characters Attribute: Attribute_Label: LAB_ID_Anions Attribute_Definition: Unique identifier assigned by the laboratory to each sample analyzed for anions by IC. Attribute_Definition_Source: Metadata author Attribute_Domain_Values: Unrepresentable_Domain: Alpha numeric number of no more than 10 characters Attribute: Attribute_Label: JOB_ID_Anions Attribute_Definition: Identifier assigned by the laboratory to each batch or job of samples analyzed for anions IC. Attribute_Definition_Source: Metadata author Attribute_Domain_Values: Unrepresentable_Domain: Alpha numeric number of no more than 10 characters Attribute: Attribute_Label: LAB_ID_RA_ICPAES_MS Attribute_Definition: Unique identifier assigned by the laboratory to each unfiltered sample analyzed by ICP-AES or ICP-MS. Attribute_Definition_Source: Metadata author Attribute_Domain_Values: Unrepresentable_Domain: Alpha numeric number of no more than 10 characters Attribute: Attribute_Label: JOB_ID_RA_ICPAES_MS Attribute_Definition: Identifier assigned by the laboratory to each batch or job of samples analyzed by ICP-AES or ICP-MS. Attribute_Definition_Source: Metadata author Attribute_Domain_Values: Unrepresentable_Domain: Alpha numeric number of no more than 10 characters Attribute: Attribute_Label: LAB_ID_FA_ICPAES_MS Attribute_Definition: Unique identifier assigned by the laboratory to each filtered sample analyzed by ICP-AES or ICP-MS. Attribute_Definition_Source: Metadata author Attribute_Domain_Values: Unrepresentable_Domain: Alpha numeric number of no more than 10 characters Attribute: Attribute_Label: JOB_ID_FA_ICPAES_MS Attribute_Definition: Identifier assigned by the laboratory to each batch or job of samples analyzed by ICP-AES or ICP-MS. Attribute_Definition_Source: Metadata author Attribute_Domain_Values: Unrepresentable_Domain: Alpha numeric number of no more than 10 characters Overview_Description: Entity_and_Attribute_Overview: Additional discussions of data are provided in the accompanying report. Entity_and_Attribute_Detail_Citation: The point features in this dataset contain 134 attribute fields. The fields "ObjectID" and "Shape" are added by the software for internal processing purposes. The remaining attribute fields were added by the authors to report laboratory results, or relevant parameters pertaining to the field site. Null values (blank cells) indicate no measurements were made or no analyses were performed for a constituent. Negative values in the field "Discharge" indicate stream flow was visually estimated and is less than the absolute value of the number. Negative values in constituent fields indicate the element was analyzed for but was below the instrumental detection limit; the negative sign is equivalent to a less than sign (<) and the absolute value of the negative number is the detection limit. For example, a "Cl" value of -0.08 indicates the chlorine measured in the sample was <0.08 ppm. Because detection limits are based on an evaluation of signal/noise ratio of the analytical instrumentation, detection limits may vary with the performance of the analytical equipment over time. Distribution_Information: Distributor: Contact_Information: Contact_Organization_Primary: Contact_Organization: U.S. Geological Survey Contact_Position: USGS Information Services Contact_Address: Address_Type: mailing address Address: Box 25286, DFC City: Denver State_or_Province: CO Postal_Code: 80225 Country: USA Contact_Voice_Telephone: 303-236-5486 Resource_Description: webmaster@geology.cr.usgs.gov Distribution_Liability: This database, identified as DS-614, has been approved for release and publication by the Director of the USGS. Although this database has been subjected to rigorous review and is substantially complete, the USGS reserves the right to revise the data pursuant to further analysis and review. Furthermore, it is released on the condition that neither the USGS nor the United States Government may be held liable for any damages resulting from its authorized or unauthorized use. Although these data have been processed successfully on a computer system at the U.S. Geological Survey, no warranty expressed or implied is made by the U.S. Geological Survey regarding the utility of the data on any other system, nor shall the act of distribution constitute any such warranty. No responsibility is assumed by the U.S. Geological Survey in the use of these data. Standard_Order_Process: Digital_Form: Digital_Transfer_Information: Format_Name: ESRI File Geodatabase Format_Version_Number: 9.3 File_Decompression_Technique: Unzip Digital_Transfer_Option: Online_Option: Computer_Contact_Information: Network_Address: Network_Resource_Name: http://pubs.usgs.gov/ds/614 Fees: None Metadata_Reference_Information: Metadata_Date: 20100513 Metadata_Contact: Contact_Information: Contact_Person_Primary: Contact_Person: Carma San Juan Contact_Organization: U.S. Geological Survey Contact_Address: Address_Type: mailing address Address: Box 25046, Mail Stop 973 City: Denver State_or_Province: Colorado Postal_Code: 80225 Country: United States Contact_Voice_Telephone: (303) 236-2450 Contact_Facsimile_Telephone: (303) 236-3200 Metadata_Standard_Name: FGDC Content Standards for Digital Geospatial Metadata Metadata_Standard_Version: FGDC-STD-001-1998 Metadata_Time_Convention: local time Metadata_Extensions: Online_Linkage: http://www.esri.com/metadata/esriprof80.html Profile_Name: ESRI Metadata Profile