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USGS · 70216888

Technical memorandum: Compound specific isotope analysis, Oak Grove Village well site OU1, Franklin County, Missouri

Phyliss Chase·John G. Schumacher
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Abstract

A study involving Compound Specific Isotope Analysis (CSIA) of trichloroethene (TCE) in groundwater at the Oak Grove Village (OGV) Well Site was conducted by the U.S. Environmental Protection Agency (EPA) in 2014 in an effort to fingerprint the source(s). This technical memorandum, written as a joint effort between HydroGeoLogic, Inc. (HGL) and the U.S. Geological Survey (USGS) Central Midwest Water Science Center (Schumacher, 2019), documents the procedures and analysis of the CSIA investigation. CSIA is an analytical method that measures the isotopic ratios of naturally occurring stable isotopes in specific chemical compounds in environmental samples. CSIA using primarily the ratio of carbon 13 C/ 12 C (δ 13 C), known as 1-D CSIA, has been used for decades in evaluating degradation pathways of organic compounds, including chlorinated solvents such as TCE. Ratios of stable chlorine isotopes 37 Cl/ 35 Cl (δ 37 Cl) also have been used with carbon isotopes, collectively known as 2-D CSIA, and most recently isotopes of hydrogen 2 H/ 1 H (δ 2 H) have been added, collectively known as 3-D CSIA, in attempts to further determine source, transport, and fate of compounds such as TCE (Ertl et al., 1998; Hunkeler et al., 2011; Kuder et al., 2013; McHugh et al., 2011; Shouakar-Stash et al., 2003; EPA, 2008; and van Warmerdam et al., 1995.

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90° N90° S · 180° W ← longitude → 180° E
Source-reported bounding extent: 38.22066212844692° to 38.23000770114828° latitude; -91.15706332261682° to -91.14878655389475° longitude. This indicates report coverage, not an exact sampling location. View area on OpenStreetMap.

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Phyliss Chase, John G. Schumacher. 2020. Technical memorandum: Compound specific isotope analysis, Oak Grove Village well site OU1, Franklin County, Missouri. https://pubs.usgs.gov/publication/70216888

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