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Record of Decision System (RODS)

PORTLAND CEMENT (KILN DUST 2 & 3)

Abstract

Site Name:  PORTLAND CEMENT (KILN DUST 2 & 3)
Address:  1000 SO. REDWOOD ROAD 
City & State:  SALT LAKE CITY  UT  84116
County:  SALT LAKE
 
EPA ID:  UTD980718670
EPA Region:  08
 
NPL Status:  Currently on the Final NPL
 
ROD Type:  Record of Decision
ROD ID:  EPA/ROD/R08-92/056
ROD Date:  03/31/1992
Operable Unit(s):  02
 
Media:  Soil, Waste
 
Contaminant:  Metals
 
Abstract:  SITE HISTORY/DESCRIPTION: The 71-acre Portland Cement (Kiln Dust #2 & #3) site, located in a primarily industrial/commercial area of Salt Lake City, Utah, consists of three separate but adjacent properties known as Site 2, Site 3, and the West Site. The area surrounding the site is characterized by dense residential and agricultural land, as well as highly commercialized and industrialized development in the immediate vicinity of the site. Between 1959 and 1983, the Portland Cement Company, which was purchased by Lone Star Industries in 1979, deposited approximately 495,000 cubic yards of waste cement kiln dust (CKD) on each of the three properties comprising the site. Waste CKD, which consists primarily of heavy metals and other inorganics, is highly alkaline. Approximately 360 tons of chromium -bearing refractory bricks were disposed of with the waste CKD. In 1984, Lone Star voluntarily began environmental investigations at the site, which included installing ground water monitoring wells. The first remedial action (OU1) selected in 1990 addressed the removal of the wasteCKD and temporary onsite storage of the chromium bricks. The waste CKD, the primary source of contamination of onsite soil, will be removed during the OU1 remedial action. This ROD addresses the onsite contaminated soil and chrome -bearing bricks that provide a potential source of ground water contamination onsite. The selected remedy for the OU2 action reduces principal threats and prevents further contamination of the ground water. Ground water contamination will be addressed as either a separate operable unit or under the 5-year review of the OU1 remedial action. The primary contaminants of concern affecting the soil and waste CKD are metals, including arsenic, chromium, and lead. PERFORMANCE STANDARDS OR GOALS: Treatment levels for soil are dictated by federal Land Disposal Regulations (LDRs) and state solid waste disposal regulations. Soil will be treated to5 ug/l lead, or less, as measured by TCLP before land disposal; chrome- bearing bricks will be treated to 5 mg/kg by TCLP analysis prior to disposal. Federal and state air regulations on total suspended particulates and fugitive dust control will apply. INSTITUTIONAL CONTROLS: Institutional controls and deed restrictions will be imposed as necessary to ensure the effectiveness of the remedy and to prevent exposure to highly alkaline soil. The length of time during which controls are needed will be determined during remedial design.
 
Remedy:  SELECTED REMEDIAL ACTION: The selected remedial action for this site includes excavating approximately 27,000 cubic yards of soil with concentrations greater than lead 500 mg/kg or arsenic 70 mg/kg, with onsite solidification of soil with concentrations of lead equal to or above 5 mg/l, based on TCLP analysis; treating approximately 360 tons of chrome-bearing bricks onsite using chemical fixation, followed by solidification; transporting all excavated and treated material offsite to an appropriate disposal facility; placing an 18-inch protective cover of clean fill over the entire site; and implementing institutional controls including deed restrictions, as necessary. The estimated present worth cost for this remedial action is $6,400,000. O&M costs for the selected remedial action are assumed to be negligible.
 
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