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 ICP-AES Partial-Digestion U.S. EPA Method 3050B Analyses of Sediment 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: "Sediment_ICP_AES_3050" 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: This data set represents the locations and analyses of 294 sediment 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 sediment geochemistry that affects aquatic ecosystems or human health. Sediment samples were partially digested using a nitric acid-hydrogen peroxide solution and were analyzed for 28 elements in the USGS Denver laboratories by inductively coupled-plasma atomic emission spectroscopy (ICP-AES). 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 294 sediment samples collected from streams in the CCAP study area. Samples were analyzed for 28 leachable element concentrations by inductively coupled plasma-atomic emission (ICP-AES). These concentrations reflect the relatively mobile fractions of the elements. The sediment analyses were used to 1) compare the relationship between sediment-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: -106.636160 East_Bounding_Coordinate: -104.868010 North_Bounding_Coordinate: 40.977510 South_Bounding_Coordinate: 37.734710 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 9.3.0.1770 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 sediment samples in this dataset were chemically analyzed in the USGS-Denver laboratories using ICP-AES 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. Logical_Consistency_Report: A site is a single geographic location where sediment samples were obtained. Multiple points at the same geographic coordinates indicate where samples were obtained over multiple years. The sediment samples in this dataset were chemically analyzed in the USGS-Denver laboratories. The ICP-AES analyses of the Method 3050B solutions was used for chemical analyses of sediment samples throughout the project. 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. Sediment 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: 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 (2002) Source_Contribution: Report describing analytical method used for chemical analyses. Source_Information: Source_Citation: Citation_Information: Originator: U.S. Environmental Protection Agency Publication_Date: 2007 Title: Method 3050B Acid Digestion of Sediments, Sludges, and Soil, 1996 Geospatial_Data_Presentation_Form: document Publication_Information: Publication_Place: U.S.A. Publisher: U.S. Environmental Protection Agency Online_Linkage: http://www.epa.gov/wastes/hazard/testmethods/sw846/pdfs/3050b.pdf Type_of_Source_Media: online Source_Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 2007 Source_Currentness_Reference: publication date Source_Citation_Abbreviation: U.S. EPA (2007) Source_Contribution: Report describing analytical method used for chemical analyses. Process_Step: Process_Description: Stream sediment, water, and aquatic insect samples were collected from suitable 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. Sediment constituent information was derived by analyzing the samples at USGS laboratories in Denver, Colorado. The sediment chemistry data were generated from partial digestion (HNO3 and H2O2; EPA SW846 Method 3050B, U.S. EPA, 2007) of 1.0 g of homogenized, <177 micron (<80-mesh) stream-sediment samples collected from each unique field site. The analytical method is described in Briggs (2002). Analytical precision and accuracy were determined from multiple analyses of three USGS standard reference materials (SRMs) included in each job of fifty or fewer samples. The ICP-AES analyses of the Method 3050B solutions provide the method-leachable concentrations of 28 major- and trace-constituents (including silica and sulfate). Source_Used_Citation_Abbreviation: U.S. EPA (2007) Source_Used_Citation_Abbreviation: Briggs (2002) 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: 295 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: Sediment_ICP_AES_3050 Entity_Type_Definition: The geographic location and analytical results of sediment samples 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: Latitude coordinates of sample site reported in decimal degrees Attribute_Definition_Source: Metadata authors Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: -106.63616 Range_Domain_Maximum: -104.86801 Attribute_Units_of_Measure: degree Attribute: Attribute_Label: Latitude_GIS Attribute_Definition: Longitude coordinates of sample site reported in decimal degrees Attribute_Definition_Source: Metadata authors Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 37.73471 Range_Domain_Maximum: 40.97751 Attribute_Units_of_Measure: degree Attribute: Attribute_Label: Ag_P_ppm Attribute_Definition: Leachable concentration of silver in the < 177 micron fraction of stream sediment sample. EPA 3050 leach method; analysis by ICP-AES. Negative values indicate determinations less than the detection limit of the analytical method; the absolute value of the negative number is the detection limit. Attribute_Definition_Source: Metadata authors Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: -0.5 Range_Domain_Maximum: 53 Attribute_Units_of_Measure: part per million Attribute: Attribute_Label: Al_P_ppm Attribute_Definition: Leachable concentration of aluminum in the < 177 micron fraction of stream sediment sample. EPA 3050 leach method; analysis by ICP-AES. Attribute_Definition_Source: Metadata authors Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 1420 Range_Domain_Maximum: 34000 Attribute_Units_of_Measure: part per million Attribute: Attribute_Label: As_P_ppm Attribute_Definition: Leachable concentration of arsenic in the < 177 micron fraction of stream sediment sample. EPA 3050 leach method; analysis by ICP-AES. 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. Attribute_Definition_Source: Metadata authors Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: -20 Range_Domain_Maximum: 273 Attribute_Units_of_Measure: part per million Attribute: Attribute_Label: B_P_ppm Attribute_Definition: Leachable concentration of boron in the < 177 micron fraction of stream sediment sample. EPA 3050 leach method; analysis by ICP-AES. Negative values indicate determinations less than the detection limit of the analytical method; the absolute value of the negative number is the detection limit. Attribute_Definition_Source: Metadata authors Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: -0.5 Range_Domain_Maximum: 16.6 Attribute_Units_of_Measure: part per million Attribute: Attribute_Label: Ba_P_ppm Attribute_Definition: Leachable concentration of barium in the < 177 micron fraction of stream sediment sample. EPA 3050 leach method; analysis by ICP-AES. Attribute_Definition_Source: Metadata authors Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 20 Range_Domain_Maximum: 2850 Attribute_Units_of_Measure: part per million Attribute: Attribute_Label: Be_P_ppm Attribute_Definition: Leachable concentration of beryllium in the < 177 micron fraction of stream sediment sample. EPA 3050 leach method; analysis by ICP-AES. Negative values indicate determinations less than the detection limit of the analytical method; the absolute value of the negative number is the detection limit. Attribute_Definition_Source: Metadata authors Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: -1 Range_Domain_Maximum: 12 Attribute_Units_of_Measure: part per million Attribute: Attribute_Label: Ca_P_ppm Attribute_Definition: Leachable concentration of calcium in the < 177 micron fraction of stream sediment sample. EPA 3050 leach method; analysis by ICP-AES. Negative values indicate determinations less than the detection limit of the analytical method; the absolute value of the negative number is the detection limit. Attribute_Definition_Source: Metadata authors Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: -10 Range_Domain_Maximum: 79000 Attribute_Units_of_Measure: part per million Attribute: Attribute_Label: Cd_P_ppm Attribute_Definition: Leachable concentration of cadmium in the < 177 micron fraction of stream sediment sample. EPA 3050 leach method; analysis by ICP-AES. Negative values indicate determinations less than the detection limit of the analytical method; the absolute value of the negative number is the detection limit. Attribute_Definition_Source: Metadata authors Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: -0.5 Range_Domain_Maximum: 81 Attribute_Units_of_Measure: part per million Attribute: Attribute_Label: Co_P_ppm Attribute_Definition: Leachable concentration of cobalt in the < 177 micron fraction of stream sediment sample. EPA 3050 leach method; analysis by ICP-AES. Negative values indicate determinations less than the detection limit of the analytical method; the absolute value of the negative number is the detection limit. Attribute_Definition_Source: Metadata authors Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: -1 Range_Domain_Maximum: 115 Attribute_Units_of_Measure: part per million Attribute: Attribute_Label: Cr_P_ppm Attribute_Definition: Leachable concentration of chromium in the < 177 micron fraction of stream sediment sample. EPA 3050 leach method; analysis by ICP-AES. Negative values indicate determinations less than the detection limit of the analytical method; the absolute value of the negative number is the detection limit. Attribute_Definition_Source: Metadata authors Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: -1 Range_Domain_Maximum: 50 Attribute_Units_of_Measure: part per million Attribute: Attribute_Label: Cu_P_ppm Attribute_Definition: Leachable concentration of copper in the < 177 micron fraction of stream sediment sample. EPA 3050 leach method; analysis by ICP-AES. Negative values indicate determinations less than the detection limit of the analytical method; the absolute value of the negative number is the detection limit. Attribute_Definition_Source: Metadata authors Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: -1 Range_Domain_Maximum: 4810 Attribute_Units_of_Measure: part per million Attribute: Attribute_Label: Fe_P_ppm Attribute_Definition: Leachable concentration of iron in the < 177 micron fraction of stream sediment sample. EPA 3050 leach method; analysis by ICP-AES. Attribute_Definition_Source: Metadata authors Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 4200 Range_Domain_Maximum: 319300 Attribute_Units_of_Measure: part per million Attribute: Attribute_Label: K_P_ppm Attribute_Definition: Leachable concentration of potassium in the < 177 micron fraction of stream sediment sample. EPA 3050 leach method; analysis by ICP-AES. Negative values indicate determinations less than the detection limit of the analytical method; the absolute value of the negative number is the detection limit. Attribute_Definition_Source: Metadata authors Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: -10 Range_Domain_Maximum: 8270 Attribute_Units_of_Measure: part per million Attribute: Attribute_Label: Li_P_ppm Attribute_Definition: Leachable concentration of lithium in the < 177 micron fraction of stream sediment sample. EPA 3050 leach method; analysis by ICP-AES. Negative values indicate determinations less than the detection limit of the analytical method; the absolute value of the negative number is the detection limit. Attribute_Definition_Source: Metadata authors Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0.6 Range_Domain_Maximum: 52 Attribute_Units_of_Measure: part per million Attribute: Attribute_Label: Mg_P_ppm Attribute_Definition: Leachable concentration of magnesium in the < 177 micron fraction of stream sediment sample. EPA 3050 leach method; analysis by ICP-AES. Negative values indicate determinations less than the detection limit of the analytical method; the absolute value of the negative number is the detection limit. Attribute_Definition_Source: Metadata authors Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: -10 Range_Domain_Maximum: 31000 Attribute_Units_of_Measure: part per million Attribute: Attribute_Label: Mn_P_ppm Attribute_Definition: Leachable concentration of manganese in the < 177 micron fraction of stream sediment sample. EPA 3050 leach method; analysis by ICP-AES. Negative values indicate determinations less than the detection limit of the analytical method; the absolute value of the negative number is the detection limit. Attribute_Definition_Source: Metadata authors Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 20 Range_Domain_Maximum: 42000 Attribute_Units_of_Measure: part per million Attribute: Attribute_Label: Mo_P_ppm Attribute_Definition: Leachable concentration of molybdenum in the < 177 micron fraction of stream sediment sample. EPA 3050 leach method; analysis by ICP-AES. Negative values indicate determinations less than the detection limit of the analytical method; the absolute value of the negative number is the detection limit. Attribute_Definition_Source: Metadata authors Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: -2 Range_Domain_Maximum: 102 Attribute_Units_of_Measure: part per million Attribute: Attribute_Label: Na_P_ppm Attribute_Definition: Leachable concentration of sodium in the < 177 micron fraction of stream sediment sample. EPA 3050 leach method; analysis by ICP-AES. Negative values indicate determinations less than the detection limit of the analytical method; the absolute value of the negative number is the detection limit. Attribute_Definition_Source: Metadata authors Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: -10 Range_Domain_Maximum: 2100 Attribute_Units_of_Measure: part per million Attribute: Attribute_Label: Ni_P_ppm Attribute_Definition: Leachable concentration of nickel in the < 177 micron fraction of stream sediment sample. EPA 3050 leach method; analysis by ICP-AES. Negative values indicate determinations less than the detection limit of the analytical method; the absolute value of the negative number is the detection limit. Attribute_Definition_Source: Metadata authors Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: -1 Range_Domain_Maximum: 85 Attribute_Units_of_Measure: part per million Attribute: Attribute_Label: P_P_ppm Attribute_Definition: Leachable concentration of phosphorous in the < 177 micron fraction of stream sediment sample. EPA 3050 leach method; analysis by ICP-AES. Negative values indicate determinations less than the detection limit of the analytical method; the absolute value of the negative number is the detection limit. Attribute_Definition_Source: Metadata authors Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 133 Range_Domain_Maximum: 5130 Attribute_Units_of_Measure: part per million Attribute: Attribute_Label: Pb_P_ppm Attribute_Definition: Leachable concentration of lead in the < 177 micron fraction of stream sediment sample. EPA 3050 leach method; analysis by ICP-AES. Negative values indicate determinations less than the detection limit of the analytical method; the absolute value of the negative number is the detection limit. Attribute_Definition_Source: Metadata authors Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: -5 Range_Domain_Maximum: 16000 Attribute_Units_of_Measure: part per million Attribute: Attribute_Label: Sb_P_ppm Attribute_Definition: Leachable concentration of antimony in the < 177 micron fraction of stream sediment sample. EPA 3050 leach method; analysis by ICP-AES. Negative values indicate determinations less than the detection limit of the analytical method; the absolute value of the negative number is the detection limit. Attribute_Definition_Source: Metadata authors Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: -5 Range_Domain_Maximum: 10.1 Attribute_Units_of_Measure: part per million Attribute: Attribute_Label: SiO2_P_ppm Attribute_Definition: Leachable concentration of silica in the < 177 micron fraction of stream sediment sample. EPA 3050 leach method; analysis by ICP-AES. Negative values indicate determinations less than the detection limit of the analytical method; the absolute value of the negative number is the detection limit. Attribute_Definition_Source: Metadata authors Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: -10 Range_Domain_Maximum: 2530 Attribute_Units_of_Measure: part per million Attribute: Attribute_Label: SO4_P_ppm Attribute_Definition: Leachable concentration of sulfate in the < 177 micron fraction of stream sediment sample. EPA 3050 leach method; analysis by ICP-AES. Negative values indicate determinations less than the detection limit of the analytical method; the absolute value of the negative number is the detection limit. Attribute_Definition_Source: Metadata authors Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: -100 Range_Domain_Maximum: 234900 Attribute_Units_of_Measure: part per million Attribute: Attribute_Label: Sr_P_ppm Attribute_Definition: Leachable concentration of strontium in the < 177 micron fraction of stream sediment sample. EPA 3050 leach method; analysis by ICP-AES. Attribute_Definition_Source: Metadata authors Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 3.1 Range_Domain_Maximum: 621 Attribute_Units_of_Measure: part per million Attribute: Attribute_Label: Ti_P_ppm Attribute_Definition: Leachable concentration of titanium in the < 177 micron fraction of stream sediment sample. EPA 3050 leach method; analysis by ICP-AES. Negative values indicate determinations less than the detection limit of the analytical method; the absolute value of the negative number is the detection limit. Attribute_Definition_Source: Metadata authors Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: -5 Range_Domain_Maximum: 23500 Attribute_Units_of_Measure: part per million Attribute: Attribute_Label: V_P_ppm Attribute_Definition: Leachable concentration of vanadium in the < 177 micron fraction of stream sediment sample. EPA 3050 leach method; analysis by ICP-AES. Negative values indicate determinations less than the detection limit of the analytical method; the absolute value of the negative number is the detection limit. Attribute_Definition_Source: Metadata authors Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 1.4 Range_Domain_Maximum: 95 Attribute_Units_of_Measure: part per million Attribute: Attribute_Label: Zn_P_ppm Attribute_Definition: Leachable concentration of zinc in the < 177 micron fraction of stream sediment sample. EPA 3050 leach method; analysis by ICP-AES. Attribute_Definition_Source: Metadata authors Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 8.5 Range_Domain_Maximum: 15000 Attribute_Units_of_Measure: part per million Attribute: Attribute_Label: LAB_ID Attribute_Definition: Unique identifier assigned by the laboratory to each sediment sample analyzed by ICP-AES 3050 Attribute_Definition_Source: Metadata authors Attribute_Domain_Values: Unrepresentable_Domain: Alpha numeric number of no more than 10 characters Attribute: Attribute_Label: JOB_ID Attribute_Definition: Identifier assigned by the laboratory to each batch or job of samples analyzed by ICP-AES 3050 Attribute_Definition_Source: Metadata authors 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 33 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 geospatial coordinates or laboratory results. Null values (blank cells) indicate no measurements were made or no analyses were performed for a constituent. 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 "Ag" value of -0.5 indicates the silver measured in the sample was <0.5 ppm. Because detection limits are based on an evaluation of signal/noise ratio of the analytical instrumentation, detection limits may vary in accordance with the performance of the analytical instrumentation 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: 20090225 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