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Cost and Performance Report:
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Hastings Groundwater Contamination Site
Well Number 3 Subsite
Hastings, Nebraska
CERCLIS #: NED980862668
ROD Date: 9/26/89
Treatment Application: Remedial
Treatability Study Associated with Application? Yes (see Appendix A)
EPA SITE Program Test Associated with Application? No
Period of Operation: 6/25/92 - 7/1/93
Quantity of Soil Treated During Application: 185,000 cubic
yards of soil (based on an estimate provided by the vendor of an areal extent
of contamination equal to 40,000 ft2
and a depth of contamination equal to 125 ft) [21]
Historical Activity That Generated Contamination at the Site: Grain
fumigation
Corresponding SIC Code: 0723A (Crop Preparation Services for Market, Except
Cotton Ginning - Grain Fumigation)
Waste Management Practices That Contributed to Contamination:
Spill/contaminated aquifer
Site History: The Hastings Groundwater Contamination Superfund site (Hastings) is located in Adams County, Nebraska, as shown in Figure 1. The site was used as a grain storage facility in the 1960s and 1970s. During this time, carbon tetrachloride (CCl4) was used as a fumigant and spillage resulted in soil and groundwater contamination at the site. As shown in Figure 2, the site consists of several contaminant source areas referred to as subsites. The Well Number 3 Subsite is the location of a CCl4 groundwater contaminant plume and CCl4 soil contamination extending from the water table to near the surface of the subsite. Contamination was detected in samples of the public water system of Hastings collected by the Nebraska Department of Health (NDOH) in 1983 in response to citizen complaints. Also in 1983, NDOH and the Nebraska Department of Environmental Quality (NDEQ) began to study groundwater contamination in Hastings. EPA began quarterly sampling of wells in 1985. From 1986 through 1989, EPA performed soil gas surveys to identify and characterize the suspected source areas. [1]
Figure 1. Site Location [1]
Figure 2. Hastings Groundwater Contamination Site [20]
Regulatory Context: [1, 20, 22] On September 26, 1989, a ROD was signed by EPA for Interim Source Control Operable Unit 7, the Well Number 3 Subsite. Soil vapor extraction, followed by air emissions treatment with granular activated carbon (GAC), was selected as the most appropriate source control action to protect public health and the environment by controlling and reducing the migration and volume of the contaminants present at the site. The ROD also specified: off-site regeneration or incineration of the GAC at an approved treatment facility; monitoring of the contaminants in the soil above the aquifer; groundwater monitoring; and monitoring of the air emissions from the GAC treatment.
Site Management: Fund Lead
Oversight: EPA
Remedial Project Manager: Diane Easley
U.S. EPA Region 7
726 Minnesota Avenue
Kansas City, KS 66101
(913) 551-7797
State Contact: Richard Schlenker
Nebraska Department of Environmental Quality
1200 N Street, Suite 400 - Atrium
Lincoln, NE 68509-9822
(402) 471-3388
Treatment System Vendor: Steven Roe
Morrison-Knudsen Corporation
7100 East Belleview Avenue
Suite 300
Englewood, CO 80111
(303) 703-5089
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1. U.S. Environmental Protection Agency. Record of Decision, Hastings
Groundwater, NE, September 1989.
20. Interim
Action Record of Decision, Hastings Ground Water
Contamination Site, Well #3 Subsite, Groundwater Operable Units, Plume 1
Operable Unit #3, Plume 2, Operable Unit #18, Hastings, Nebraska, U.S. EPA
Region VII, Kansas City, Kansas, June 30, 1993.
21. Comments
submitted by Morrison-Knudsen Corporation, on January
26, 1995.
22. Comments submitted by Diane Easley of EPA Region VII on February 9, 1995.