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U.S. Environmental Protection Agency
U.S. EPA Technology Innovation and Field Services Division

In Situ Flushing Site Profiles

In Situ Flushing Using Water at Operable Unit 2, Lipari Landfill Superfund Site in New Jersey

Site Information

Name and Location:

Lipari Landfill Superfund Site, Pitman, NJ

Is this a Superfund Site?

Yes

Is this a Federal Facility?

No

Site Background

Between 1958 and 1971, the 6-acre landfill accepted household waste, liquid and semi-solid chemical wastes, and other industrial materials. Approximately 3 million gallons of liquid wastes and 12,000 cubic yards of solid wastes were disposed of at the site, and included solvents, paints and thinners, formaldehyde, dust collector residues, resins, and solid press cakes from the industrial production of paints and solvents. These wastes were disposed of in trenches originally excavated for sand and gravel. The site was added to the final NPL in September 1983.

Cleanup Program:

CERCLA

Site Type(s):

Industrial Landfills
Municipal Landfills

Project Information

Project Name:

In Situ Flushing Using Water at Operable Unit 2, Lipari Landfill Superfund Site in New Jersey

Project Start Date
(if available):

1993

Status:

Ongoing

Scale:

Full

Area:

675,000 sq. ft.

Volume:

27,000,000 cu. ft.

Depth of Treatment Zone:

40 ft

Geology/Hydrogeology:

The surficial aquifer consists of sands and gravels and is nearly 55 feet thick. This aquifer is underlain by a clay layer, which separates the upper and lower aquifers.

Objectives:

The purpose of this project is to treat water-soluble contaminants within the upper zone of the containment area.

Cleanup Goals:

The following cleanup goals apply to onsite groundwater (in micrograms per liter [μg/L]): methylene chloride: 1,600; chloroform: 470; benzene: 71; 1,2-dichloroethane: 99; toluene: 200,000; chlorobenzene: 21,000; ethylbenzene: 29,000; phenol: 4,600,000; bis(2-chloroethyl) ether: 1.4; arsenic: 0.14; chromium: 180; lead: 2.5; mercury: 0.15; nickel: 4,600; selenium: 5; silver: 3.4; and zinc: 100.

Project Description:

A batch flushing system uses fresh water to address contamination inside a slurry wall. Flushing focuses on the upper zone of the soil, where most of the contamination is present. The flushing system was modified in 2000 to include a dual phase extraction system to enhance the removal of less volatile, less water-soluble contaminants and contaminated air from the landfill.

Are performance data available?

Yes

Performance Data:

From 1994 through December 2001, the batch flushing system produced 154 million gallons of leachate containing approximately 55 tons of water-soluble organic contaminants. The following concentration reductions (in μg/L) were observed in extraction wells (average from 1992-1996 to average from 2003): methylene chloride: 6,743 to 79; chloroform: 1,524 to 52; benzene: 4,711 to 682; 1,2-dichloroethane: 24,182 to 207; 4-methyl-2-pentanone: 11,262 to 369; toluene: 48,397 to 14,458; chlorobenzene: 1,538 to 183; ethylbenzene: 3,924 to 1,453; xylenes (total): 17,831 to 7,222; phenol: 25,739 to 771; bis(2-chloroethyl) ether: 65,800 to 1,439; arsenic: 39 to 18; chromium: 105 to 39; lead: 60.48 to 27; mercury: 0.20 to 0.19; nickel: 105.97 to 36.8; selenium: 11.81 to 5.4; silver: 8.56 to 0.46; and zinc: 1,153 to 222.

Cost Data:

Not provided in information sources reviewed.

Responsible Party(s):

EPA

Last Update of Project:

Apr 7, 2006

Media Information

Media Treated:

Soil

Technology Information

Technology:

Flushing (In Situ)

Technology Type:

In Situ

Description of flushing agent(s):

Water

Flushing Agent Used:

Water

Contaminant Information

Contaminant(s) Treated Media where found Initial Concentration Final Concentration
1,1-Dichloroethane Soil 24,182 μg/L 207 μg/L
4-Methyl-2-pentanone (MIBK) Soil 11,262 μg/L 369 μg/L
Arsenic Soil 39 μg/L 18 μg/L
Benzene Soil 4,711 μg/L 682 μg/L
Bis(2-chloroethyl) ether Soil 65,800 μg/L 1,439 μg/L
Chlorobenzene Soil 1,538 μg/L 183 μg/L
Chloroform Soil 1,524 μg/L 52 μg/L
Chromium Soil 105 μg/L 39 μg/L
Ethylbenzene Soil 3,924 μg/L 1,453 μg/L
Lead Soil 60 μg/L 27 μg/L
Mercury Soil 0 μg/L 0 μg/L
Methylene chloride Soil 6,743 μg/L 79 μg/L
Nickel Soil 106 μg/L 37 μg/L
Phenol Soil 25,739 μg/L 771 μg/L
Selenium Soil 12 μg/L 5 μg/L
Silver Soil 9 μg/L 0 μg/L
Toluene Soil 48,397 μg/L 14,458 μg/L
Xylenes Soil 17,831 μg/L 7,222 μg/L
Zinc Soil 1,153 μg/L 222 μg/L

Contact Information

Name and Address:

Fred Cataneo
U.S. EPA - Region 2
290 Broadway
New York City NY 10007-1866

Affiliation:

U.S. EPA - Region 2

Role:

Regulator

Primary Contact?

Yes

Phone:

(212) 637-7442

Fax:

Email:

cataneo.fred@epa.gov

Web Address:

 

Reference(s):

Annual Status Report, Eleventh Edition. 2004. U.S. Environmental Protection Agency.

Draft 2003 Annual Report. Lipari Landfill.

Email from Fred Cataneo, US EPA to Danielle Wohler, Tetra Tech EMI. November 10, 2004.

Lipari Landfill. December 2003. Region 2 Fact Sheet.

Lipari Landfill. September 26, 2002. Five-Year Review Report.

Lipari Landfill. September 3, 1997. Five-Year Review Report.

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