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PA Act 2 closure of a multiple-remedy UST site

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Authors:Coll, Frederic R.; Moore, Richard A.
Author Affiliations:Primary:
URS Corporation, Pittsburgh, PA, United States
Other:
Florida State University, United States
Volume Title:Contaminated soils, sediments, water, and energy; Volume 18
Volume Authors:Kostecki, Paul T., editor; Calabrese, Edward J.; Teaf, Christopher
Source:Proceedings - Annual International Conference on Soils, Sediments, Water and Energy, Vol.18, p.106-119; 28th annual international conference on Contaminated soils, sediments, water and energy, Amherst, MA, Oct. 15-18, 2012, edited by Paul T. Kostecki, Edward J. Calabrese and Christopher Teaf. Publisher: University of Massachusetts, Amherst, MA, United States
Publication Date:2013
Note:In English. 5 refs.; illus., incl. sketch maps
Summary:URS Corporation (URS), under contract with the Pennsylvania Department of Environmental Protection (PADEP), completed remedial closure of a former leaking underground storage tank (LUST) Site contaminated with BTEX and MTBE. Aquifer impacts resulting from former leaking USTs threatened the local water supply. Significant issues at the Site include challenging geology, constituent distribution and fate, public health, and land use. Aquifer impacts resulting from former leaking USTs at the Site, located in Sewickley, PA, threatened the local water supply. The former source area presented significant remedial challenges including a large vadose zone, aquifer impacts to 90 feet, and land use. The former gas station property is presently an integral part of an existing profitable retail business, presenting further challenges and limiting potential remedial options. Operation of nearby public water supply wells generated a gradient reversal leading to significant migration and diving of the MTBE plume towards the supply wells. In-situ oxidation via the Kerfoot Technologies, Inc. patented combined ozone-hydrogen peroxide process, termed PerozoneTM, was implemented in the former source area, replacing a formerly installed SVE system that proved ineffective. The remedial technology and design implemented resulted in significant source area concentration reductions and the development of subsurface conditions conducive to bioremediation. Additional remedial measures undertaken at the Site include passive oxygen addition and plume cut-off for the off-site MTBE plume. The application of these multiple remedies at the Site provided for an effective, site-wide remedial strategy to achieve corrective action.
Subjects:Aquifer vulnerability; Aquifers; Aromatic hydrocarbons; BTEX; Clastic sediments; Concentration; Contaminant plumes; Dissolved oxygen; Ethers; Experimental studies; Gravel; Ground water; Hydrocarbons; Hydrogen peroxide; In situ; Injection; Land use; Methyl tert-butyl ether; Observation wells; Organic compounds; Oxidation; Oxygen; Ozone; Pollution; Remediation; Sand; Sediments; Solutes; Statistical analysis; Time series analysis; Underground storage tanks; Unsaturated zone; Water resources; Water supply; Allegheny County Pennsylvania; Ohio River; Pennsylvania; United States; Sewickley Pennsylvania
Coordinates:N401200 N404000 W0794200 W0802200
Record ID:806780-10
Copyright Information:GeoRef, Copyright 2021 American Geosciences Institute.
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