Renee K. Takesue Christopher H. Conaway Thomas D. Lorenson Eric E. Grossman 20230206 comma-delimited text data release DOI:10.5066/P9YD3HJQ Pacific Coastal and Marine Science Center, Santa Cruz, California U.S. Geological Survey https://doi.org/10.5066/P9YD3HJQ https://www.sciencebase.gov/catalog/item/63371d88d34e900e86cb4043 Geochemical data are reported for surface sediments and long sediment cores from Bellingham Bay, Whatcom County, Washington, collected in early February 2020 after flood conditions on the Nooksack River. Data include total organic carbon content (TOC), carbonate content (CaCO3), ratios of stable carbon 13/12 isotopes (d13C), ratios of total carbon to total nitrogen (C:N), short-lived cosmogenic radionuclide activities (Beryllium-7, Cesium-137, and excess Lead-210), and elemental chemistry. Sediment geochemistry was explored to increase understanding about sediment and contaminant accumulation and provenance in Bellingham Bay over historical time scales. Improved understanding about sediment sources and dispersal patterns in the past few hundred years can inform current understanding and future projections about sediment and sediment-bound contaminant inputs, transport, fate, and potential effects on nearshore ecosystems. The U.S. Geological Survey (USGS) Coastal Habitats in Puget Sound Project (CHIPS), under which the current study was conducted, pairs geochemical data, oceanographic measurements, and hydrodynamic models to inform management decisions aimed at reducing negative effects of land-based materials on valued nearshore habitats and species and to support ecosystem recovery planning. Additional information about the field activity from which these data were derived is available online at: https://cmgds.marine.usgs.gov/fan_info.php?fan=2020-606-FA Any use of trade, product, or firm names is for descriptive purposes only and does not imply endorsement by the U.S. Government. 20200209 20200212 Sediment from Bellingham Bay was collected in February 2020. Complete None planned -122.61213 -122.49895 48.76242 48.68261 ISO 19115 Topic Category environment geoscientificInformation Data Categories for Marine Planning Substrate USGS Thesaurus geochemistry toxic trace element contamination rare earth elements mass spectroscopy grab sampling Marine Realms Information Bank (MRIB) keywords Sediment geochemistry Stable isotope analysis Mercury analysis Radiometric dating None U.S. Geological Survey USGS Coastal and Marine Hazards and Resources Program CMHRP Pacific Coastal and Marine Science Center PCMSC USGS Metadata Identifier USGS:63371d88d34e900e86cb4043 Geographic Names Information System (GNIS) Bellingham Bay Nooksack River Whatcom County None USGS-authored or produced data and information are in the public domain from the U.S. Government and are freely redistributable with proper metadata and source attribution. Please recognize and acknowledge the U.S. Geological Survey as the originator(s) of the dataset and in products derived from these data. U.S. Geological Survey, Pacific Coastal and Marine Science Center PCMSC Science Data Coordinator mailing and physical

2885 Mission Street

Santa Cruz CA 95060 831-427-4747 pcmsc_data@usgs.gov https://www.sciencebase.gov/catalog/file/get/63371d88d34e900e86cb4043?name=BEL20_sediment_sites.jpg&allowOpen=true Bellingham Bay sediment collection sites. Circles=surface grabs, squares=cores. JPEG Angela Tan and Miranda Baker analyzed sediment grain size, total organic carbon content, and carbonate content at the USGS Pacific Coastal and Marine Science Center Sediment and Carbon Laboratory. Ratios of stable isotopes of carbon 13/12, and of total carbon to total nitrogen were determined by Colin Carney at the University of California at Santa Cruz Stable Isotope Lab. Elemental chemistry analyses were performed by AGAT Laboratories under contract to the Analytical Chemistry Project of the USGS Geology, Geophysics, and Geochemistry Science Center (GGGSC). GGGSC staff performed QA/QC checks. Geochemical data are tabulated in comma separated variable (CSV) format. Process duplicates for carbon analyses were run for every sample and were within 15 percent. For stable isotope analyses, long-term internal reference materials were included in every run. For short-lived radionuclides, sample activities were calculated by comparison to reference standards with the same geometry and counting time; reported uncertainties include 1 standard deviation counting errors, detector efficiency, and background corrections. Detector efficiency for Cesium-137 was determined using National Institute of Standards and Technology (NIST) Standard Reference Material 4350B (at the Menlo Park Gamma Counting Lab) and International Atomic Energy Agency (IAEA) Standard Reference Material 300 (at Pacific Coastal and Marine Science Center Radiochemistry Lab). Detector efficiency for Lead-210 was determined using IAEA standards RGU-1 and RGTh-1. Detector efficiency for Beryllium-7 was calculated by interpolation between the efficiencies of Lead-214 at 351.9 keV and Bismuth-214 peak at 609.3 keV. For sediment grain size analyses (GSA), the laser particle counter was calibrated with three manufacturer-provided standards every day. Process duplicates for GSA were analyzed every 20 samples and were within 15 percent. For elemental chemistry determinations, long-term internal reference materials were used to standardize the data. The percent recovery for all elements was within 15 percent of reference values for concentrations that were not less than five times the limit of detection. No formal logical accuracy tests were conducted. The short-lived radionuclide Beryllium-7 was not measured in Cores 1, 2, 7, 8 due to its short half-life. Elemental chemistry was not measured in Cores 1 and 7 because they were sandy and thus unlikely to contain environmental geochemical information. A Garmin handheld GPS (model GPSmap 78sc) reported a horizontal accuracy of +/- 3 meters. However, Garmin cites the actual accuracy as 5 to 15 meters. National Institute of Standards and Technology 2015 online National Institute of Standards and Technology https://www-s.nist.gov/srmors/certificates/4350B.pdf online document 20161020 20190812 The certification of SRM 4350B is valid indefinitely. NIST 4350B Certificate of analysis The Certificate lists the certified properties for SRM 4350B, their values, and estimated uncertainties. International Atomic Energy Agency 1987 online International Atomic Energy Agency https://nucleus.iaea.org/sites/ReferenceMaterials/Pages/IAEA-RGU-1.aspx online document 20161020 20190812 The certification of IAEA-RGU-1 is valid indefinitely. IAEA-RGU-1 Certificate of analysis The Certificate lists the certified properties for IAEA-RGU-1, their values, and estimated uncertainties. International Atomic Energy Agency 1987 online International Atomic Energy Agency https://nucleus.iaea.org/sites/ReferenceMaterials/Pages/IAEA-RGTh-1.aspx online document 20161020 20190812 The certification of IAEA-RGTh-1 is valid indefinitely. IAEA-RGTh-1 Certificate of analysis The Certificate lists the certified properties for IAEA-RGTh-1, their values, and estimated uncertainties. Ballestra, S. Gastaud, J. Lopez, J.J. Parsi, P. Vas, D. 1994 online International Atomic Energy Agency https://inis.iaea.org/collection/NCLCollectionStore/_Public/35/066/35066057.pdf online document 20161020 20190812 The certification of IAEA-300 is valid indefinitely. Certificate of analysis The Certificate lists the certified properties for IAEA-300, their values, and estimated uncertainties. SEDIMENT COLLECTION. Surface sediment was collected using a benthic grab sampler deployed from a boat. Long cores were collected using a vibracore device deployed from the A-frame of the boat. 20200212 SEDIMENT GRAIN SIZE ANALYSIS. Sediment grain size distributions were determined at the USGS Pacific Coastal and Marine Science Center (PCMSC) Sediment Laboratory. To remove organic material, 10 milliliters of 35 percent hydrogen peroxide were added to 20 grams of sediment. The sample was heated to 250 degrees Celsius to remove any remaining hydrogen peroxide and was placed in an ultrasonic bath to liberate the less than 0.063 millimeter-diameter fine fraction. The sample was centrifuged for 1.5 hours in deionized water to remove soluble salts. Samples were funneled through 2 millimeter- and 0.063 millimeter-diameter mesh sieves to separate gravel-sized (greater than 2 millimeter), sand-sized (0.063 to 2 millimeter), and mud-sized (less than 0.063 millimeter) particles. The sand and gravel fractions were dried at 80 degrees Celsius and weighed. Five milliliters of sodium hexametaphosphate were added to the mud fraction and a 20-milliliter aliquot was taken from a 1-liter graduated cylinder to determine the weight of the mud. The particle-size distribution of the mud and sand fraction was analyzed separately using a Beckman Coulter LS 13 320, and the gravel, sand, and mud results were integrated into a single grain-size distribution for each sample. 20210315 Angela Tan U.S. Geological Survey, Pacific Coastal and Marine Science Center Physical Scientist mailing and physical

2885 Mission Street

Santa Cruz CA 95060 831-460-7409 atan@usgs.gov SEDIMENT TOTAL ORGANIC CARBON CONTENT. Sediment organic carbon content was determined at the USGS Pacific Coastal and Marine Science Center Carbon Laboratory. Approximately 1 gram of sediment was dried overnight at 80 degrees Celsius and pulverized by hand in a mortar and pestle. Total carbon (TC) was determined by incineration at 950 degrees Celsius (UIC CM 5200 furnace) of 20 milligrams of dry sediment loaded into in foil capsules. Total inorganic carbon (TIC) was determined by perchloric acid digestion (UIC CM 5130 acid digester) of 20 milligrams of dry sediment. Total organic carbon (TOC) was calculated as the difference between TC and TIC. The calcium carbonate (CaCO3) content of sediment in weight percent was determined by multiplying TIC by 8.333, the mass ratio of CaCO3 to carbon. Averages of process duplicate values are reported. 20210315 Angela Tan U.S. Geological Survey, Pacific Coastal and Marine Science Center Physical Scientist mailing and physical

2885 Mission Street

Santa Cruz CA 95060 831-460-7409 atan@usgs.gov RATIOS OF STABLE ISOTOPES OF CARBON 13/12 (d13C and TOTAL CARBON TO TOTAL NITROGEN (C:N). Sediment d13C and C:N ratios were determined at the University of California at Santa Cruz Stable Isotope Lab using a CE Instruments NC2500 elemental analyzer interfaced to a ThermoFinningan Delta Plus XP isotope ratio mass spectrometer. Samples were decarbonated by fumigation with sulfurous acid prior to d13C analysis to remove inorganic carbonates. Sediment d13C ratios were referenced to the Vienna PeeDeeBelemnite. 20210809 Colin Carney Stable Isotope Lab at the University of California at Santa Cruz Associate Specialist Mailing

1156 High Street, E&MS Bldg C512

Santa Cruz CA 95064 831-459-5751 cpcarney@ucsc.edu SHORT-LIVED COSMOGENIC RADIONUCLIDE ACTIVITIES. Prior to quantification of short-lived radionuclide activities, bulk sediment was oven-dried at 60 degrees Celsius, ground by hand in a mortar and pestle and packed into 10 milliliter graduated polystyrene vials. Vials were capped and sealed to prevent gas exchange, then left to equilibrate for at least 21 days. For surface sediment and Cores 3, 5, 6, and 9, samples and reference materials with the same geometry were counted for 24 hours in a high purity, low background germanium (HPGe) well detector at the USGS PCMSC Radiochemistry Lab. Beryllium-7 activities were counted at 476 kiloelectron volts (keV), Cesium-137 at 661 keV, Lead-210 at 46.5 keV, and Radium-226 as the average of indirect peaks at 351.87 keV (Lead-214) and 609.31 keV (Bismuth-214). Unsupported, or excess, Lead-210 was calculated by subtracting supported Lead-210 (assumed to equal average Radium-226 activity) from total Lead-210. Sediment from Cores 1, 2, 7, and 8, had Cesium-137 and Lead-210 activities determined at the USGS Menlo Park Gamma Counting Lab, where it was packed into 7 milliliter plastic vials and counted for 48 to 72 hours in a HPGe well detector. 20201025 ELEMENTAL CHEMISTRY. Bulk sediment was oven-dried at 60 degrees Celsius and disaggregated gently with a mortar and pestle to avoid changing grain sizes. Disaggregated sediment was dry-sieved through stainless steel sieves to obtain 2 grams of the less than 0.063 millimeter fine fraction. Fine sediments were sent to the Analytical Chemistry Project of the USGS Geology, Geophysics, and Geochemistry Science Center (GGGSC), which contracted AGAT Laboratories, a nationally accredited laboratory, for analyses of major, minor, and trace element contents using two methods: a near-total four-acid digestion (labeled multi-acid in the table of data) and a total digestion with a sodium peroxide fusion (labeled fusion in the table of data) for elements hosted in acid-resistant minerals. Quantification was performed by inductively coupled plasma atomic emission spectroscopy (ICP-AES) for major and some minor elements and by inductively coupled plasma mass spectroscopy (ICP-MS) for some minor and all trace elements. 20210714 Jaime Azain USGS Geology, Geophysics, and Geochemistry Science Center Research Geologist mailing

Denver Federal Center, Bldg 20

Denver CO 80225 303-236-9376 jsazain@usgs.gov Point Point 177 0.00001 0.00001 Decimal degrees D_WGS_1984 WGS84 6378137.0000 298.2572 Attribute table Table of data. -9999 indicates not determined Producer defined Field_I.D. Unique sample identifier assigned during field collection based on location and order of collection. Producer defined Unique alphanumeric field sample identifier Collection date Date the sample was collected, in mm/dd/yyyy Producer defined 2/09/2020 2/12/2020 mm/dd/yyyy 1 Latitude Latitude where the sample was collected Producer defined 48.68261 48.76242 decimal degrees 0.00001 Longitude Longitude where the sample was collected Producer defined -122.61213 -122.49895 decimal degrees 0.00001 Datum Geodetic datum of location coordinates Producer defined Alphanumeric datum identifier Type Type of sediment sample Producer defined GRAB Sediment collected with a grab sampler Producer defined CORE Sediment interval collected by vibracore at the specified depth below the sediment surface (midpoint depth) in the next column. Producer defined Midpoint_depth midpoint depth of the 2-centimeter-thick sediment interval from which sample was collected from the surface layer of the grab sample or downcore Producer defined 1.0 161.0 centimeters 0.1 Total_organic_carbon Percent by weight of organic carbon; -9999=not determined Producer defined 0.4537299 4.5225456 percent 0.0000001 d13C_bulk Ratio of carbon 13/12 stable isotopes in sedimentary organic matter; -9999=not determined Producer defined -26.46 -20.74 standard per mil notation 0.01 C:N_ratio Molar ratio of total carbon to total nitrogen (C:N); -9999=not determined Producer defined 5.91 28.25 mol per mol 0.01 Beryllium-7_activity Activity of Beryllium-7; -9999=not determined Producer defined 0.00 3.59 disintegrations per minute per gram (dpm per g) 0.01 Beryllium-7_uncertainty Measurement uncertainty of Beryllium-7 activity estimated from: detector efficiency, background correction, and one standard deviation of the counting error; -9999 =not determined Producer defined 0.00 2.02 disintegrations per minute per gram (dpm per g) 0.01 Cesium-137_activity Activity of Cesium-137; -9999=not determined Producer defined -0.11 0.56 disintegrations per minute per gram (dpm per g) 0.01 Cesium-137_uncertainty Measurement uncertainty of Cesium-137 activity estimated from: detector efficiency, background correction, and one standard deviation of the counting error; -9999=not determined Producer defined 0.00 0.26 disintegrations per minute per gram (dpm per g) 0.01 Excess_Lead-210_activity Activity of supported, or excess, Lead-210; -9999=not determined Producer defined -0.90 18.72 disintegrations per minute per gram (dpm per g) 0.01 Excess_Lead-210_ uncertainty Measurement uncertainty of excess Lead-210 activity estimated from: detector efficiency, background correction, and one standard deviation of the counting error; -9999=not determined Producer defined 0.18 1.20 disintegrations per minute per gram (dpm per g) 0.01 Percent_Gravel percent of sample greater than 2 mm; -9999=not determined producer defined 0.000000 33.465785 percentage 0.000001 Percent_Sand percent of sample less than 2 mm and greater than 63 microns; -9999=not determined producer defined 0.149201 96.257587 percentage 0.000001 Percent_Silt percent of sample less than 63 microns and greater than 4 microns; -9999=not determined producer defined 2.675925 75.254524 percentage 0.000001 Percent_Clay percent of sample less than 4 microns; -9999=not determined producer defined 1.066489 42.900340 percentage 0.000001 Percent_Mud percent of sample less than 63 microns; -9999=not determined producer defined 3.742413 99.850800 percentage 0.000001 -4.00phi_16mm Weight percent of sample with grain diameter greater than -4.00 phi, or 16 mm; -9999=not determined producer defined 0.000000 0.000000 percentage 0.000001 -3.75phi_13.5mm Weight percent of sample with grain diameter between -4.00 and -3.75 phi, or 13.5 and 16 mm; -9999=not determined producer defined 0.000000 13.677152 percentage 0.000001 -3.50phi_11.2mm Weight percent of sample with grain diameter between -3.75 and -3.50 phi, or 11.2 and 13.5 mm; -9999=not determined producer defined 0.000000 0.000000 percentage 0.000001 -3.25phi_9.51mm Weight percent of sample with grain diameter between -3.50 and -3.25 phi, or 9.51 and 11.2 mm; -9999=not determined producer defined 0.000000 14.155417 percentage 0.000001 -3.00phi_8mm Weight percent of sample with grain diameter between -3.25 and -3.00 phi, or 8 and 9.51 mm; -9999=not determined producer defined 0.000000 0.000000 percentage 0.000001 -2.75phi_6.73mm Weight percent of sample with grain diameter between -3.00 and -2.75 phi, or 6.73 and 8 mm; -9999=not determined producer defined 0.000000 0.000000 percentage 0.000001 -2.50phi_5.66mm Weight percent of sample with grain diameter between -2.75 and -2.50 phi, or 5.66 and 6.73 mm; -9999=not determined producer defined 0.000000 0.000000 percentage 0.000001 -2.25phi_4.76mm Weight percent of sample with grain diameter between -2.50 and -2.25 phi, or 4.76 and 5.66 mm; -9999=not determined producer defined 0.000000 0.000000 percentage 0.000001 -2.00phi_4mm Weight percent of sample with grain diameter between -2.25 and -2.00 phi, or 4 and 4.76 mm; -9999=not determined producer defined 0.000000 0.000000 percentage 0.000001 -1.75phi_3.36mm Weight percent of sample with grain diameter between -2.00 and -1.75 phi, or 3.36 and 4 mm; -9999=not determined producer defined 0.000000 1.359579 percentage 0.000001 -1.50phi_2.83mm Weight percent of sample with grain diameter between -1.75 and -1.50 phi, or 2.83 and 3.36 mm; -9999=not determined producer defined 0.000000 1.317331 percentage 0.000001 -1.25phi_2.38mm Weight percent of sample with grain diameter between -1.50 and -1.25 phi, or 2.38 and 2.83 mm; -9999=not determined producer defined 0.000000 1.762154 percentage 0.000001 -1.00phi_2mm Weight percent of sample with grain diameter between -1.25 and -1.00 phi, or 2 and 2.38 mm; -9999=not determined producer defined 0.000000 1.435268 percentage 0.000001 -0.75phi_1.68mm Weight percent of sample with grain diameter between -1.00 and -0.75 phi, or 1.68 and 2 mm; -9999=not determined producer defined 0.000000 4.153997 percentage 0.000001 -0.50phi_1.41mm Weight percent of sample with grain diameter between -0.75 and -0.50 phi, or 1.41 and 1.68 mm; -9999=not determined producer defined 0.000000 5.230148 percentage 0.000001 -0.25phi_1.19mm Weight percent of sample with grain diameter between -0.50 and -0.25 phi, or 1.19 and 1.41 mm; -9999=not determined producer defined 0.000000 5.134500 percentage 0.000001 0.00phi_1mm Weight percent of sample with grain diameter between -0.25 and 0.00 phi, or 1 and 1.19 mm; -9999=not determined producer defined 0.000000 5.635046 percentage 0.000001 0.25phi_0.8409mm Weight percent of sample with grain diameter between 0.00 and 0.25 phi, or 0.8409 and 1 mm; -9999=not determined producer defined 0.000000 3.697238 percentage 0.000001 0.50phi_0.7071mm Weight percent of sample with grain diameter between 0.25 and 0.50 phi, or 0.7071 and 0.8409 mm; -9999=not determined producer defined 0.000000 4.173296 percentage 0.000001 0.75phi_0.5946mm Weight percent of sample with grain diameter between 0.50 and 0.75 phi, or 0.5946 and 0.7071 mm; -9999=not determined producer defined 0.000000 4.602564 percentage 0.000001 1.00phi_0.5mm Weight percent of sample with grain diameter between 0.75 and 1.00 phi, or 0.5 and 0.5946 mm; -9999=not determined producer defined 0.000000 5.300426 percentage 0.000001 1.25phi_0.4204mm Weight percent of sample with grain diameter between 1.00 and 1.25 phi, or 0.4204 and 0.5 mm; -9999=not determined producer defined 0.000000 5.649360 percentage 0.000001 1.50phi_0.3536mm Weight percent of sample with grain diameter between 1.25 and 1.50 phi, or 0.3536 and 0.4204 mm; -9999=not determined producer defined 0.000000 6.487764 percentage 0.000001 1.75phi_0.2973mm Weight percent of sample with grain diameter between 1.50 and 1.75 phi, or 0.2973 and 0.3536 mm; -9999=not determined producer defined 0.000000 10.345615 percentage 0.000001 2.00phi_0.25mm Weight percent of sample with grain diameter between 1.75 and 2.00 phi, or 0.25 and 0.2973 mm; -9999=not determined producer defined 0.000000 14.019759 percentage 0.000001 2.25phi_0.2102mm Weight percent of sample with grain diameter between 2.00 and 2.25 phi, or 0.2102 and 0.25 mm; -9999=not determined producer defined 0.000000 16.203697 percentage 0.000001 2.50phi_0.1768mm Weight percent of sample with grain diameter between 2.25 and 2.50 phi, or 0.1768 and 0.2102 mm; -9999=not determined producer defined 0.000000 17.371158 percentage 0.000001 2.75phi_0.1487mm Weight percent of sample with grain diameter between 2.50 and 2.75 phi, or 0.1487 and 0.1768 mm; -9999=not determined producer defined 0.000000 16.340360 percentage 0.000001 3.00phi_0.125mm Weight percent of sample with grain diameter between 2.75 and 3.00 phi, or 0.125 and 0.1487 mm; -9999=not determined producer defined 0.000000 15.765978 percentage 0.000001 3.25phi_0.1051mm Weight percent of sample with grain diameter between 3.00 and 3.25 phi, or 0.1051 and 0.125 mm; -9999=not determined producer defined 0.000000 14.821196 percentage 0.000001 3.50phi_0.088388mm Weight percent of sample with grain diameter between 3.25 and 3.50 phi, or 0.08839 and 0.1051 mm; -9999=not determined producer defined 0.001200 11.591943 percentage 0.000001 3.75phi_0.074325mm Weight percent of sample with grain diameter between 3.50 and 3.75 phi, or 0.07433 and 0.08839 mm; -9999=not determined producer defined 0.028000 7.641820 percentage 0.000001 4.00phi_0.0625mm Weight percent of sample with grain diameter between 3.75 and 4.00 phi, or 0.0625 and 0.07433 mm; -9999=not determined producer defined 0.120001 7.633608 percentage 0.000001 4.25phi_0.052556mm Weight percent of sample with grain diameter between 4.00 and 4.25 phi, or 0.052556 and 0.0625 mm; -9999=not determined producer defined 0.120011 10.729605 percentage 0.000001 4.50phi_0.044194mm Weight percent of sample with grain diameter between 4.25 and 4.50 phi, or 0.044194 and 0.052556 mm; -9999=not determined producer defined 0.124009 13.154333 percentage 0.000001 4.75phi_0.037163mm Weight percent of sample with grain diameter between 4.50 and 4.75 phi, or 0.037163 and 0.044194 mm; -9999=not determined producer defined 0.138821 13.342704 percentage 0.000001 5.00phi_0.03125mm Weight percent of sample with grain diameter between 4.75 and 5.00 phi, or 0.03125 and 0.037163 mm; -9999=not determined producer defined 0.161140 11.368545 percentage 0.000001 5.25phi_0.026278mm Weight percent of sample with grain diameter between 5.00 and 5.25 phi, or 0.02628 and 0.03125 mm; -9999=not determined producer defined 0.164934 8.312148 percentage 0.000001 5.50phi_0.022097mm Weight percent of sample with grain diameter between 5.25 and 5.50 phi, or 0.0221 and 0.02628 mm; -9999=not determined producer defined 0.152597 6.401893 percentage 0.000001 5.75phi_0.018581mm Weight percent of sample with grain diameter between 5.50 and 5.75 phi, or 0.01858 and 0.0221 mm; -9999=not determined producer defined 0.143160 5.599325 percentage 0.000001 6.00phi_0.015625mm Weight percent of sample with grain diameter between 5.75 and 6.00 phi, or 0.01563 and 0.01858 mm; -9999=not determined producer defined 0.144435 5.429781 percentage 0.000001 6.25phi_0.013139mm Weight percent of sample with grain diameter between 6.00 and 6.25 phi, or 0.01314 and 0.01563 mm; -9999=not determined producer defined 0.155413 5.959548 percentage 0.000001 6.50phi_0.011049mm Weight percent of sample with grain diameter between 6.25 and 6.50 phi, or 0.01105 and 0.01314 mm; -9999=not determined producer defined 0.160676 6.348214 percentage 0.000001 6.75phi_0.009291mm Weight percent of sample with grain diameter between 6.50 and 6.75 phi, or 0.00929 and 0.01105 mm; -9999=not determined producer defined 0.159685 6.408009 percentage 0.000001 7.00phi_0.007813mm Weight percent of sample with grain diameter between 6.75 and 7.00 phi, or 0.00781 and 0.00929 mm; -9999=not determined producer defined 0.153124 6.280561 percentage 0.000001 7.25phi_0.00657mm Weight percent of sample with grain diameter between 7.00 and 7.25 phi, or 0.00657 and 0.00781 mm; -9999=not determined producer defined 0.143904 6.270561 percentage 0.000001 7.50phi_0.005524mm Weight percent of sample with grain diameter between 7.25 and 7.50 phi, or 0.00552 and 0.00657 mm; -9999=not determined producer defined 0.135111 6.228474 percentage 0.000001 7.75phi_0.004645mm Weight percent of sample with grain diameter between 7.50 and 7.75 phi, or 0.00465 and 0.00552 mm; -9999=not determined producer defined 0.123552 5.948991 percentage 0.000001 8.00phi_0.003906mm Weight percent of sample with grain diameter between 7.75 and 8.00 phi, or 0.00391 and 0.00465 mm; -9999=not determined producer defined 0.116475 5.719416 percentage 0.000001 8.25phi_0.003285mm Weight percent of sample with grain diameter between 8.00 and 8.25 phi, or 0.00329 and 0.00391 mm; -9999=not determined producer defined 0.111347 5.370062 percentage 0.000001 8.50phi_0.002762mm Weight percent of sample with grain diameter between 8.25 and 8.50 phi, or 0.00276 and 0.00329 mm; -9999=not determined producer defined 0.106146 4.840039 percentage 0.000001 8.75phi_0.002323mm Weight percent of sample with grain diameter between 8.50 and 8.75 phi, or 0.00232 and 0.00276 mm; -9999=not determined producer defined 0.10628 4.490036 percentage 0.000001 9.00phi_0.001953mm Weight percent of sample with grain diameter between 8.75 and 9.00 phi, or 0.00195 and 0.00232 mm; -9999=not determined producer defined 0.107405 4.160033 percentage 0.000001 9.25phi_0.001642mm Weight percent of sample with grain diameter between 9.00 and 9.25 phi, or 0.00164 and 0.00195 mm; -9999=not determined producer defined 0.109852 3.870031 percentage 0.000001 9.50phi_0.001381mm Weight percent of sample with grain diameter between 9.25 and 9.50 phi, or 0.00138 and 0.00164 mm; -9999=not determined producer defined 0.108787 3.630029 percentage 0.000001 9.75phi_0.001161mm Weight percent of sample with grain diameter between 9.50 and 9.75 phi, or 0.00116 and 0.00138 mm; -9999=not determined producer defined 0.105507 3.460028 percentage 0.000001 9.99phi_0.000983mm Weight percent of sample with grain diameter between 9.75 and 9.99 phi, or 0.00098 and 0.00116 mm; -9999=not determined producer defined 0.090220 3.140025 percentage 0.000001 10.25phi_0.000821mm Weight percent of sample with grain diameter between 9.99 and 10.25 phi, or 0.00082 and 0.00098 mm; -9999=not determined producer defined 0.074701 3.030116 percentage 0.000001 10.50phi_0.000691mm Weight percent of sample with grain diameter between 10.25 and 10.50 phi, or 0.00069 and 0.00082 mm; -9999=not determined producer defined 0.053377 2.550098 percentage 0.000001 10.75phi_0.000581mm Weight percent of sample with grain diameter between 10.50 and 10.75 phi, or 0.00058 and 0.00069 mm; -9999=not determined producer defined 0.042302 2.070079 percentage 0.000001 10.99phi_0.000492mm Weight percent of sample with grain diameter between 10.75 and 10.99 phi, or 0.00049 and 0.00058 mm; -9999=not determined producer defined 0.029744 1.450056 percentage 0.000001 11.25phi_0.000411mm Weight percent of sample with grain diameter between 10.99 and 11.25 phi, or 0.0004 and 0.00049 mm; -9999=not determined producer defined 0.016855 0.830030 percentage 0.000001 11.48phi_0.00035mm Weight percent of sample with grain diameter between 11.25 and 11.48 phi, or 0.00035 and 0.0004 mm; -9999=not determined producer defined 0.003966 0.190044 percentage 0.000001 12.02phi_0.000241mm Weight percent of sample with grain diameter between 11.48 and 12.02 phi, or 0.000241 and 0.00035 mm; -9999=not determined producer defined 0.000000 0.000000 percentage 0.000001 13.02phi_0.00012mm Weight percent of sample with grain diameter between 12.02 and 13.02 phi, or 0.00012 and 0.000241 mm; -9999=not determined producer defined 0.000000 0.000000 percentage 0.000001 Job_number Unique laboratory identifier assigned to a batch of samples by the GGGSC Analytical Chemistry Laboratory Producer defined Unique alphanumeric batch identifier Lab_I.D. Unique laboratory identifier assigned to each sample by the GGGSC Analytical Chemistry Laboratory Producer defined Unique alphanumeric batch identifier Hg_by_CVAA Total mercury (Hg) content analyzed by cold vapor atomic absorption (CVAA) in units of mg per kg; -9999=not determined Producer defined 0.03 4.35 milligrams per kilogram (mg per kg) 0.01 Al_by_fusion Aluminum (Al) content of fused, digested sediment in units of weight percent (percent); -9999=not determined Producer defined 4.84 8.71 weight percent (percent) 0.01 Ca_by_fusion Calcium (Ca) content of fused, digested sediment in units of weight percent (percent); -9999=not determined Producer defined 1.41 15.50 weight percent (percent) 0.01 Fe_by_fusion Iron (Fe) content of fused, digested sediment in units of weight percent (percent); -9999=not determined Producer defined 2.93 5.53 weight percent (percent) 0.01 K_by_fusion Potassium (K) content of fused, digested sediment in units of weight percent (percent); -9999=not determined Producer defined 1.00 1.80 weight percent (percent) 0.01 Mg_by_fusion Magnesium (Mg) content of fused, digested sediment in units of weight percent (percent); -9999=not determined Producer defined 1.53 3.72 weight percent (percent) 0.01 Na_by_multi-acid Sodium (Na) content of multi-acid digested sediment in units of weight percent (percent); -9999=not determined producer defined 2.22 4.10 weight percent (percent) 0.01 P_by_fusion Phosphorus (P) content of fused, digested sediment in units of weight percent (percent); -9999=not determined producer defined 0.07 0.14 weight percent (percent) 0.01 S_by_multi-acid Sulfur (S) content of fused, digested sediment in units of weight percent (percent); -9999=not determined producer defined 0.16 1.94 weight percent (percent) 0.1 Si_by_fusion Silica (Si) content of fused, digested sediment in units of weight percent (percent); -9999=not determined producer defined 16.7 28.2 weight percent (percent) 0.1 Ti_by_fusion Titanium (Ti) content of fused, digested sediment in units of weight percent (percent); -9999=not determined producer defined 0.29 0.67 weight percent (percent) 0.01 Ag_by_multi-acid Silver (Ag) content of multi-acid digested sediment in units of mg per kg; -9999=not determined producer defined 0.22 0.70 milligrams per kilogram (mg per kg) 0.01 As_by_multi-acid Arsenic (As) content of multi-acid digested sediment in units of mg per kg; -9999=not determined producer defined 6.8 18.4 milligrams per kilogram (mg per kg) 0.1 Ba_by_fusion Barium (Ba) content of fused, digested sediment in units of mg per kg; -9999=not determined producer defined 326 572 milligrams per kilogram (mg per kg) 1 Be_by_multi-acid Beryllium (Be) content of multi-acid digested sediment in units of mg per kg; -9999=not determined producer defined 0.85 1.55 milligrams per kilogram (mg per kg) 0.01 Bi_by_multi-acid Bismuth (Bi) content of multi-acid digested sediment in units of mg per kg; -9999=not determined producer defined 0.12 1.02 milligrams per kilogram (mg per kg) 0.01 Cd_by_multi-acid Cadmium (Cd) content of multi-acid digested sediment in units of mg per kg; -9999=not determined producer defined 0.15 1.61 milligrams per kilogram (mg per kg) 0.01 Ce_by_fusion Cerium (Ce) content of fused, digested sediment in units of mg per kg; -9999=not determined producer defined 29.8 46.6 milligrams per kilogram (mg per kg) 0.1 Co_by_multi-acid Cobalt (Co) content of multi-acid digested sediment in units of mg per kg; -9999=not determined producer defined 10.1 25.4 milligrams per kilogram (mg per kg) 0.1 Cr_by_fusion Chromium (Cr) content of fused, digested sediment in units of mg per kg; -9999=not determined Producer defined 86 922 milligrams per kilogram (mg per kg) 1 Cs_by_multi-acid Cesium (Cs) content of multi-acid digested sediment in units of mg per kg; -9999=not determined producer defined 1.38 3.69 milligrams per kilogram (mg per kg) 0.01 Cu_by_multi-acid Copper (Cu) content of multi-acid digested sediment in units of mg per kg; -9999=not determined producer defined 20.6 70.1 milligrams per kilogram (mg per kg) 0.1 Dy_by_fusion Dysprosium (Dy) content of fused, digested sediment in units of mg per kg; -9999=not determined Producer defined 3.10 4.64 milligrams per kilogram (mg per kg) 0.01 Er_by_fusion Erbium (Er) content of fused, digested sediment in units of mg per kg; -9999=not determined Producer defined 1.87 2.83 milligrams per kilogram (mg per kg) 0.01 Eu_by_fusion Europium (Eu) content of fused, digested sediment in units of mg per kg; -9999=not determined Producer defined 0.96 1.47 milligrams per kilogram (mg per kg) 0.01 Ga_by_multi-acid Gallium (Ga) content of multi-acid digested sediment in units of mg per kg; -9999=not determined producer defined 9.3 20.0 milligrams per kilogram (mg per kg) 0.1 Gd_by_fusion Gadolinium (Gd) content of fused, digested sediment in units of mg per kg; -9999=not determined Producer defined 3.42 5.28 milligrams per kilogram (mg per kg) 0.01 Ge_by_fusion Germanium (Ge) content of fused, digested sediment in units of mg per kg; -9999=not determined Producer defined 1 2 milligrams per kilogram (mg per kg) 1 Hf_by_fusion Hafnium (Hf) content of fused, digested sediment in units of mg per kg; -9999=not determined Producer defined 3 11 milligrams per kilogram (mg per kg) 1 Ho_by_fusion Holmium (Ho) content of fused, digested sediment in units of mg per kg; -9999=not determined Producer defined 0.67 0.97 milligrams per kilogram (mg per kg) 0.01 In_by_multi-acid Indium (In) content of multi-acid digested sediment in units of mg per kg; -9999=not determined producer defined 0.041 0.078 milligrams per kilogram (mg per kg) 0.001 La_by_fusion Lanthanum (La) content of fused, digested sediment in units of mg per kg; -9999=not determined Producer defined 14.4 22.5 milligrams per kilogram (mg per kg) 0.1 Li_by_multi-acid Lithium (Li) content of multi-acid digested sediment in units of mg per kg; -9999=not determined producer defined 23.5 47.6 milligrams per kilogram (mg per kg) 0.1 Lu_by_fusion Lutetium (Lu) content of fused, digested sediment in units of mg per kg; -9999=not determined Producer defined 0.26 0.46 milligrams per kilogram (mg per kg) 0.01 Mn_by_multi-acid Manganese (Mn) content of multi-acid digested sediment in units of mg per kg; -9999=not determined producer defined 356 821 milligrams per kilogram (mg per kg) 1 Mo_by_multi-acid Molybdenum (Mo) content of multi-acid digested sediment in units of mg per kg; -9999=not determined producer defined 0.93 7.94 milligrams per kilogram (mg per kg) 0.01 Nb_by_multi-acid Niobium (Nb) content of multi-acid digested sediment in units of mg per kg; -9999=not determined producer defined 5.4 10.6 milligrams per kilogram (mg per kg) 0.1 Nd_by_fusion Neodymium (Nd) content of fused, digested sediment in units of mg per kg Producer defined 15.4 24.2 milligrams per kilogram (mg per kg) 0.1 Ni_by_multi-acid Nickel (Ni) content of multi-acid digested sediment in units of mg per kg; -9999=not determined producer defined 36 173 milligrams per kilogram (mg per kg) 1 P_by_multi-acid Phosphorus (P) content of multi-acid digested sediment in units of mg per kg; -9999=not determined producer defined 694 1270 milligrams per kilogram (mg per kg) 1 Pb_by_multi-acid Lead (Pb) content of multi-acid digested sediment in units of mg per kg; -9999=not determined producer defined 7.6 55.4 milligrams per kilogram (mg per kg) 0.1 Pr_by_fusion Praseodymium (Pr) content of fused, digested sediment in units of mg per kg Producer defined 3.66 5.84 milligrams per kilogram (mg per kg) 0.01 Rb_by_multi-acid Rubidium (Rb) content of multi-acid digested sediment in units of mg per kg; -9999=not determined producer defined 31.7 62.2 milligrams per kilogram (mg per kg) 0.1 Sb_by_multi-acid Antimony (Sb) content of multi-acid digested sediment in units of mg per kg; -9999=not determined producer defined 0.45 1.50 milligrams per kilogram (mg per kg) 0.01 Sc_by_multi-acid Scandium (Sc) content of multi-acid digested sediment in units of mg per kg; -9999=not determined producer defined 11.7 20.6 milligrams per kilogram (mg per kg) 0.1 Sm_by_fusion Samarium (Sm) content of fused, digested sediment in units of mg per kg Producer defined 3.3 5.0 milligrams per kilogram (mg per kg) 0.1 Sn_by_multi-acid Tin (Sn) content of multi-acid digested sediment in units of mg per kg; -9999=not determined Producer defined 1.2 7.0 milligrams per kilogram (mg per kg) 0.1 Sr_by_fusion Strontium (Sr) content of fused, digested sediment in units of mg per kg producer defined 221 1330 milligrams per kilogram (mg per kg) 1 Ta_by_multi-acid Tantalum (Ta) content of multi-acid digested sediment in units of mg per kg; -9999=not determined producer defined 0.33 0.70 milligrams per kilogram (mg per kg) 0.01 Tb_by_fusion Terbium (Tb) content of fused, digested sediment in units of mg per kg Producer defined 0.57 0.81 milligrams per kilogram (mg per kg) 0.01 Te_by_multi-acid Tellurium (Te) content of multi-acid digested sediment in units of mg per kg; -9999=not determined; <, less than producer defined 0.02 0.12 milligrams per kilogram (mg per kg) 0.01 Th_by_fusion Thorium (Th) content of fused, digested sediment in units of mg per kg Producer defined 3.2 5.9 milligrams per kilogram (mg per kg) 0.1 Tl_by_multi-acid Thallium (Tl) content of multi-acid digested sediment in units of mg per kg; -9999=not determined producer defined 0.24 0.59 milligrams per kilogram (mg per kg) 0.01 Tm_by_fusion Thulium (Tm) content of fused, digested sediment in units of mg per kg Producer defined 0.27 0.43 milligrams per kilogram (mg per kg) 0.01 U_by_fusion Uranium (U) content of fused, digested sediment in units of mg per kg Producer defined 2.18 4.12 milligrams per kilogram (mg per kg) 0.01 V_by_multi-acid Vanadium (V) content of multi-acid digested sediment in units of mg per kg; -9999=not determined producer defined 95 173 milligrams per kilogram (mg per kg) 1 W_by_multi-acid Tungsten (W) content of multi-acid digested sediment in units of mg per kg; -9999=not determined producer defined 0.6 1.0 milligrams per kilogram (mg per kg) 0.1 Y_by_fusion Yttrium (Y) content of fused digested sediment in units of mg per kg Producer defined 16.8 24.5 milligrams per kilogram (mg per kg) 0.1 Yb_by_fusion Ytterbium (Yb) content of fused digested sediment in units of mg per kg Producer defined 1.8 2.8 milligrams per kilogram (mg per kg) 0.1 Zn_by_multi-acid Zinc (Zn) content of multi-acid digested sediment in units of mg per kg; -9999=not determined producer defined 76 138 milligrams per kilogram (mg per kg) 1 Zr_by_fusion Zirconium (Zr) content of the fused, digested sediment in units of weight percent (percent) Producer defined 96 428 weight percent (percent) 1 The first line of the csv file is a header line. U.S. Geological Survey U.S. Geological Survey - ScienceBase mailing and physical

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Denver CO 80225 1-888-275-8747 sciencebase@usgs.gov These data are available in csv format (SedimentGeochemistryBellingham2020.csv), accompanied by CSDGM FGDC compliant metadata and a map showing sample locations. Unless otherwise stated, all data, metadata and related materials are considered to satisfy the quality standards relative to the purpose for which the data were collected. Although these data and associated metadata have been reviewed for accuracy and completeness and approved for release by the U.S. Geological Survey (USGS), no warranty expressed or implied is made regarding the display or utility of the data on any other system or for general or scientific purposes, nor shall the act of distribution constitute any such warranty. comma-delimited text File contains the csv table, the associated metadata, and a map of sample locations. No compression applied 0.612 https://www.sciencebase.gov/catalog/item/63371d88d34e900e86cb4043 https://doi.org/10.5066/P9YD3HJQ Data can be downloaded using the Network_Resource_Name links. The first link is a direct link to download the zipped file of data, metadata, and location map. The second link points to the landing page for the data release. None. These data can be viewed with any text reader. 20230206 U.S. Geological Survey, Pacific Coastal and Marine Science Center PCMSC Science Data Coordinator mailing and physical

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Santa Cruz CA 95060 831-427-4747 pcmsc_data@usgs.gov Content Standard for Digital Geospatial Metadata FGDC-STD-001-1998