From Sediment to Solid

by James R. Donnelly, Director of Environmental Services and Technologies; Davy International, 2440 Camino Ramon, San Ramon, CA,
William C. Webster, President; Webster Associates, Auburn, AL,

Serial Information: Civil Engineering—ASCE, 1996, Vol. 66, Issue 5, Pg. 41-43

Document Type: Feature article


While closing a 32 acre, storm-water impoundment area contaminated with petroleum waste sediments at an oil refinery, engineers came up with a more-effective treatment plan that saved $10 million over conventional ex-situ remediation by combining a new reagent blend with in-situ techniques to solidify more than 500,000 cu yd of waste. In 1991, a major Gulf Coast refinery developed a storm-water management plan that included the closure of six large petroleum-contaminated storm-water impoundment ponds. The closure required remediation of all waste, residues and contaminated media. Refinery officials selected ex-situ solidification using a cement fly ash blend as the technology for treating these wastes.

Subject Headings: Waste treatment | Stormwater management | Solid wastes | Petroleum refining | Water storage | Solidification | Sediment

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