Innovations in Site Characterization Streamlining Cleanup at Vapor Intrusion and Product Removal Sites Using the Triad Approach: Hartford Plume Site, Hartford, Illinois f U.S. ENVIRONMENTAL PROTECTION AGENCY OFFICE OF SUPERFUND REMEDIATION AND TECHNOLOGY INNOVATION SUPERFUND TECHNOLOGY SUPPORT CENTER

نویسنده

  • Stephen Dyment
چکیده

Mention of trade names or commercial products does not constitute endorsement or recommendation for use. ii FOREWORD This case study is one in a series designed to provide cost and performance information for innovative tools and approaches that support streamlined site characterization and cleanup. These case studies will include reports on new technologies as well as novel applications of familiar tools or processes. They are prepared to offer operational experience and to further disseminate information about ways to improve the cleanup process at hazardous waste sites. viii ACRONYMS AND ABBREVIATIONS %RE Percent Fluorescence Intensity µg micrograms µg/kg Microgram per Kilogram µg/m 3 Micrograms per Meter Cubed µm Micrometer ADL The property includes about 400 residences in the northern half of the Village of Hartford and includes surrounding refinery and bulk storage facilities. • Systematic planning process • Conceptual site model (CSM) • Dynamic work strategies • Direct push soil and groundwater sampling • Detection of hydrocarbons in soil using laser induced fluorescence (LIF) • Cone penetrometer testing (CPT) geologic data • Product thickness in wells • Product removal tests from wells • Physical property testing and core analyses • Standard methods for soil, groundwater, and soil gas • Simulated distillations • On-site laboratory analyses for U.S. Environmental Protection Agency (EPA) Method Modified TO-15 • Vapor screening for lower explosive limit (LEL) and hydrocarbons • Passive soil gas Current Site Activities: Optimizing and installing additional soil vapor extraction (SVE) systems and product removal wells. Surface and subsurface soil site-wide: • Numerous types of petroleum spills on site affect soil. • Lead additives for gasoline are also present. Groundwater: • Groundwater has also been affected by petroleum related constituents including benzene, ethylbenzene, toluene, xylenes (BETX), methyl-tert butyl ether (MTBE) above EPA Maximum Contaminant Levels (MCLs). Vapors: • In addition to BTEX compounds, high concentrations of isopentane and hexane are also present and indicate the potential for fire and explosive hazards. Cone Penetrometer Testing (CPT) / Rapid Optical Screening Tool (ROST) or CPT/ROST used to map geologic relationships and estimate the nature and extent of hydrocarbons at the site. Passive soil gas probes and on-site analyses of SUMMA canisters and Tedlar® bag samples were used in combination with field screening detectors. High-level samples based on screening results were analyzed in the field to expedite risk evaluations and fixed laboratory results were used to confirm the information generated in the field. Nearly 300 CPT/ROST …

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تاریخ انتشار 2010