Greg F. Koltun Carrie A. Huitger Erin A. Stelzer Lauren D. Lynch 20250130 tabular digital data Reston, VA U.S. Geological Survey https://doi.org/10.5066/P13GN45M Carrie A. Huitger Greg F. Koltun Erin A. Stelzer Lauren D. Lynch 2025 publication Reston, VA U.S. Geological Survey https://doi.org/10.3133/sir20255005 This dataset contains concentrations of polycyclic aromatic hydrocarbon compounds sampled using semipermeable membrane device (SPMD) blank samples. Data were collected to determine the presence of compounds in stream water that could potentially impact the health of native mussel populations. 2020 2021 ground condition Complete None planned -83.2200 -83.1000 39.9000 39.6800 ISO 19115 Topic Category biota None polycyclic aromatic hydrocarbons USGS Thesaurus Water Quality Water Resources USGS Metadata Identifier USGS:67f94514d4be022c3e84f1cc None Big Darby Creek Ohio United States None. Please see 'Distribution Info' for details. None. Users are advised to read the dataset's metadata thoroughly to understand appropriate use and data limitations. Carrie A Huitger U.S. Geological Survey, MIDCONTINENT REGION, Ohio-Kentucky-Indiana Water Science Center Hydrologist mailing and physical

6460 Busch Blvd, Suite 100

Columbus OH 43229-1753 614-506-8372 614-430-7777 chuitger@usgs.gov The Ohio Water Development Authority provided funding and Ohio Environmental Protection Agency provided support for this project. Quality control (QC) samples for the polar organic chemical integrative sampler (POCIS) and semipermeable membrane device (SPMD) passive samplers consisted of fabrication blanks and field blanks. Blank samples, also called blanks, are collected, and analyzed alongside the environmental samples to help detect the presence of airborne contamination of the sampling media during construction in the laboratory and handling in the field during sampling trips. Fabrication blanks were processed concurrently with the field-deployed samplers. Fabrication blanks were exposed to the air at the USGS Columbia Environmental Research Center (CERC) laboratory during the fabrication of the samplers and are used to account for the interferences or contamination that occurred from the sampler components, storage, processing, and analysis (Alvarez, 2010). For each of the six deployments, one POCIS and one SPMD field blank container was opened to the air at one of the three sites (chosen at random) just prior to the passive sampler being deployed in the water and closed after the sampler was submerged. The field blank passive sampler containers were also opened before retrieving the instream passive sampler and then closed when the retrieved passive sampler was resealed in its metal can. Between deployment and retrieval of the instream passive samplers, the sealed field blank sample containers were stored in a freezer at less than 0 °C. Blanks were processed and analyzed in the same fashion as the environmental samples. Instrument verification checks and reference standards were also employed. The reader is encouraged to read the section titled "QC Results for Passive Samplers" in the related primary publication for details of the QC results. Alvarez, D.A., 2010, Guidelines for the use of the semipermeable membrane device (SPMD) and the polar organic chemical integrative sampler (POCIS) in environmental monitoring studies: U.S. Geological Survey Techniques and Methods, book 1, chap. D4, 28 p., https://doi.org/10.3133/tm1D4. The concentration results from field and fabrication blanks were used to recensor environmental results in some cases. Concentrations of the environmental samples were recensored at the concentrations found in the blanks if they exceeded the method detection limit (MDL). The estimated water concentration of the fabrication blank for a given year was used to recensor results for all sites in that same year unless the site-specific field blank had a higher estimated water concentration and then it was used for recensoring results for the site at which the field blank was collected. Final results were reviewed for logical consistency. Outlier results, if any, received additional review before acceptance. Dataset is considered complete for the information presented. Users are advised to read the rest of the metadata record carefully for additional details. SPMD processing consisted of dialysis to extract chemicals from the media, followed by using size exclusion chromatography to isolate the PAHs. One PRC-fortified SPMD from each site was designated for PAH analyses. Processing the samples included isolation of the PAHs from potential interferences, cleanup of the extract using a reactive tri-adsorbent gravity-flow chromatography column, and analysis using a gas chromatograph mass spectrometer in full-scan mode (Alvarez and others, 2008). Alvarez, D.A., Cranor, W.L., Perkins, S.D., Clark, R.C., and Smith, S.B., 2008, Chemical and toxicological assessment of organic contaminants in surface water using passive samplers: Journal of Environmental Quality, v. 37, no. 3, p. 1024–1033, https://doi.org/10.2134/jeq2006.0463. 2021 David Alvarez USGS - SOUTHEAST REGION Supervisory Research Chemist mailing and physical

Columbia Environmental Res Ctr, CERC - A-3 Main Office/Lab

Columbia MO 65201 573-441-2970 dalvarez@usgs.gov The calculation of time-weighted average water concentrations of PAHs from SPMD data uses a series of polynomial regression models that take into account site-specific environmental factors affecting uptake as determined by the loss of the PRCs (Alvarez, 2010). These calculations of PAHs from SPMD data are described by Alvarez (2010). A detailed explanation of the theoretical aspects of uptake and derivation of the models has been described by Huckins and others (2006). Huckins, J.N., Petty, J.D., and Booij, K., 2006, Monitors of organic chemicals in the environment—Semipermeable membrane devices: New York, Springer, 223 p. 2021 David Alvarez USGS - SOUTHEAST REGION Supervisory Research Chemist mailing and physical

Columbia Environmental Res Ctr, CERC - A-3 Main Office/Lab

Columbia MO 65201 573-441-2970 dalvarez@usgs.gov SPMD_QC.csv Comma Separated Value (CSV) file containing data. Producer Defined compound Name of compound Producer Defined Column contains names of chemical compounds analyzed. blank_type Type of blank Producer Defined Fabrication Lab Fabrication blank Producer defined Field Field blank Producer defined site USGS station number: 1 = 395339083130100, 2 = 395430083143000, 3 = 03230310, CERC = Columbia Environmental Research Center. Producer Defined CERC Columbia Environmental Research Center, Columbia, Missouri Producer defined 1 USGS station number 395339083130100 Producer defined 3 USGS station number 03230310 Producer defined 2 USGS station number 395430083143000 Producer defined deployment Deployment number Producer Defined << empty cell >> Lab Fabrication blank, not associated with a deployment, occurs at the CERC lab prior to deployment. Producer defined 1 3 year Year of deployment Producer Defined 2020 2021 concentration Polycyclic aromatic hydrocarbons (PAHs) detected in semipermeable membrane device (SPMD) blank samples Producer Defined << empty cell >> Compound not detected Producer defined 0.08 155.29 nanograms per liter This dataset contains concentrations of polycyclic aromatic hydrocarbon compounds sampled using semipermeable membrane device (SPMD) blank samples. Koltun, G.F., Huitger, C.A., Stelzer, E.A., and Lynch, L.D., 2025, Pesticide, organic wastewater compound (OWC) and polycyclic aromatic hydrocarbon (PAH) data determined from samples collected with instream passive samplers in the Big Darby Creek Basin, Ohio, 2020-21: U.S. Geological Survey data release, https://doi.org/10.5066/P13GN45M. U.S. Geological Survey GS ScienceBase mailing address

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Denver CO 80225 United States 1-888-275-8747 sciencebase@usgs.gov 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 for other purposes, nor on all computer systems, nor shall the act of distribution constitute any such warranty. Digital Data https://doi.org/10.5066/P13GN45M None 20250411 Greg F Koltun U.S. Geological Survey, MIDCONTINENT REGION, Ohio-Kentucky-Indiana Water Science Center Emeritus mailing and physical

6460 Busch Blvd, Suite 100

Columbus OH 43229-1753 614-565-7469 614-430-7777 gfkoltun@usgs.gov FGDC Content Standard for Digital Geospatial Metadata FGDC-STD-001-1998