These data represent water and bed sediment samples analyzed for a variety of organic compounds. The samples were collected in streams and rivers in the Chesapeake Bay watershed from 2006-2014.
Water samples were collected from 61 sites and analyzed for hormones (SH2434 method; Tables 1A and 1B), pharmaceuticals (SH2080 method; Tables 2A and 2B), wastewater indicators (SH1433 method; Tables 3A and 3B), and antibiotics (LCAB method; Tables 4A and 4B). Select water samples were analyzed at the U.S. Geological Survey National Water Quality Laboratory for pesticides (SH2001 method and SH2003 method; Tables 5A/5B and 6A/6B, respectively), wastewater indicators (SH4433 method; Tables 7A and 7B), pharmaceuticals (SH8244 method; Tables 8A and 8B), and hormones (SH4434 method; Tables 9A and 9B). Bed sediment samples were collected from 56 sites and analyzed for wastewater compounds (SH5433 method; Tables 10A and 10B), hormones (SH6434 method; tables 11A and 11B), and organohalogen compounds (LC8093 method; Tables 12A and 12B). Water samples were analyzed for antibiotics at the U.S. Geological Survey Kansas Organic Geochemistry Laboratory. For each of the 12 laboratory methods there are two files, an analyte file (A; analytical method details) and data file (B; site information and analyte concentration if detected). The information can be downloaded in three formats: CSV (comma delimited; alldata-csv.zip), ASCII TXT (tab delimited; alldata-tab-delim-txt.zip), and XLSX (two Excel 2013 files; each dataset is a workbook tab; alldata.for.scibase.part-01.020317.xlsx [Tables 1-4, 10-12], alldata.for.scibase.part-02.020317.xlsx [Tables 5-9]). The Dataset XML file includes an complete list of Analyte Compounds, Compound Groups, CAS Numbers, and USGS NWIS Parameter codes found in each analyte file and associated data file. The analyte file for each method includes analyte compound names, compound group, CAS Number(s), USGS National Water Information System (NWIS) Parameter code, method detection limit, and reporting limit. Compound groups (in alphabetic order) include Androgen, Antibiotics Human and Veterinary, Antidepressant, Antihistamine, Antiviral, Beta-Blocker/Heart, Caffeine/Nicotine, Estrogen, Flame Retardant, Fungicide, Herbicide, Insecticide, Opiate, Persistent Organic Pollutant, Personal Care/Domestic Use (PCDU), Pesticide, Pharmaceutical, Plant/Animal Biochemical (PAB), Plasticizer, Polychlorinated Biphenyl, Polycyclic Aromatic Hydrocarbon, Progesterone, Progestin, and Stimulant/Abuse. The data file for each laboratory method includes State, Network, Sample Number, Station ID, Sample Date, Sample Time, Compound Group, Compound concentration. Network: CHEDC, data collected between 2012-2013 by the Chesapeake Endocrine Disruption project; PAREC, data available from Pennsylvania (other than Chesapeake Endocrine Disruption project samples)(various years listed in headnote); PA012, data available from Pennsylvania collected before 2013; C2007, data collected in Maryland, Virginia, and West Virginia between 2006-2007; CTEM, data collected at sites in West Virginia (various years listed in headnote). Station ID: When available, U.S. Geological Survey National Water Information (NWIS) site number. Sample time is standard time. Table head notes list sample media: filtered or unfiltered water, or bed sediment. Analyte Concentrations Units are listed in the table headnote (micrograms per kilogram OR nanograms per liter); nd denotes non-detect; dnq denotes detected, but not quantified; concentrations in italics denote replicate of previous sample. Site locations (including latitude/longitude) are provided in interactive map viewer, downloadable ESRI ArcGIS Shape file (Chesapeake_Bay_Watershed_water_and_sediment_sampling_sites_for_ScienceBase4.zip), and ArcGIS Mapping Service (REST Service).