Five-Year Review Report for Lang Property Superfund
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Five-Year Review Report for Lang Property Superfund Site Pemberton Township Burlington County, New Jei-sey 2005 PREPARED BY: U.S. Environmental Protection Agency Region II New York, New York lllllllllllililllllllllllilll 139748 Five-Year Review Report Table of Contents Executive Summary iii Five-Year Review Summary Form . iv I. Introduction ; 1 II. Site Clironology 1 III. Background 1 Physical Characteristics ' 1 Land and Resource Use 2 History of Contamination ., 2 Initial Response ,.;.............. , -2 Basis for Taking Action .^ 2 IV. Remedial Actions 3 Remedy Selection ' 3 Remedy Implementation ./.... .....;..... 3 System Operations/Operation and Maintenance ! . 4 I Institutional Controls ' , 4 V. Progress Since the Last Five-Year Review 5 VI. Five-Year Review Process 5 Administrative Components • .5 Community Involvement . : . 5 Document Review •...:.... ;..... 5 Data Review ..........'./...:.. •. 5 Site Inspection ; 6 V VII. Technical Assessment 6 Question A: Is the remedy functioning as intended by the decision documents? 6 Question B: Are the exposure assumptions, toxicity data, cleanup levels, and remedial action objectives (RAOs) used at the time of the remedy selection still valid? 6 Question C: Has any other information come to light that could call into question the protectiveness of the remedy? 8 Technical Assessment Summary 8 VIII. Recommendations and Follow-up Actions 9 IX. Protectiveness Statement 9 X. Next Review 9 XI. Bibliography for Lang Property Superfund Site 10 Tables Table 1 - Chronology of Site Events 11 Table 2 - Comparison of maximum groundwater contaminant concentrations to NJ GWQC and MCLs, Federal MCLs, and EPA Region 9 PRGs 12 Figure Figure 1-1 - Site Location Map n EXECUTIVE SUMMARY A five-year review for the Lang Property Superfund site, located in Pemberton Township, Burlington County, New Jersey, was completed in September 2005. The remedy for the site ' included excavation of contaminated shallow soil and waste materials, with disposal at an off- site landfill; restoration of the excavated area by filling and grading, including the removal of surface debris as necessary; extraction and on-site treatment of contaminated ground water, with reinjection of treated water; installation of a security fence to restrict site access; and appropriate environmental monitoring to ensure the effectiveness of the remedial action. The site achieved construction completion status with the signing of the Preliminary Close-Out Report on September 13, 1995. This five-year review was conducted as a matter of EPA policy. The triggering action for this policy review was the first five-year review which EPA completed on September 25, 2000. Based upon a review of the Record of Decision, the Preliminary Close-Out Report, a number of reports prepared by the on-site contractor and inspections of the site, it has been concluded that the remedies at the site function as intended by the Record of Decision and protect human health and the environment. Potential impacts of contaminated shallow soil was addressed through removal of the contaminated soil. The ground water contamination is.being addressed through an on-site pump-and-treat system and through optimizing measures. Long-term response action activities are ongoing. in Five-Year Review Summary Form SITE IDENTIFICATION Site name (from WasteLAN): LANG PROPERTY EPA ID (from WasteLAN): NJD980505382 Region: 2 State: NJ City/County: Pemberton/Burlington County SITE STATUS NPL status: • Final D Deleted n nthpr (gpprify) Remediation status (choose all that apply): • Under Construction • Constructed • Operating IVIultiple OUs?* DYES • NO Construction completion date: 9/13/95 Has site been put into reuse? Q YES • NO D N/A REVIEW STATUS Lead agency: BEPA QState D Tribe D Other Federal Appnry Author name: Lawrence Granite Author title: Remedial Project Manager Author affiliation: EPA Review period:** September 2000 to September 2005 Date(s) of site inspection: 6/17/05 and 7/14/05 Type of review: D Post-SARA D Pre-SARA D N PL-Removal only D Non-NPL Remedial Action Site D NPL State/Tribe-lead • Policy D Regional Discretion Review number: n 1 (first) • 2 (second) n 3 (third) n other (specify) Triggering action: n Actual RA Onsite Construction at OU #1 • Actual RA Start at 0U# 1 Q Construction Completion • Previous Five-Year Review Report • Other (specify) Triggering action date (from WasteLAN): 09/25/00 Does the report include recommendation(s) and follow-up action(s)? Q yes • no Is the remedy protective of the environment? • yes D no D not yet determined * ["OU" refers to operable unit.] ** [Review period should correspond to the actual start and end dates of the Five-Year Review in WasteLAN.] IV Five-Year Review Summary Form (continued) Issues. Recommendations, and Follow-Up Actions This report did not identify any issue or make any recominendation for the protection of public health and/or the environment which was not included or anticipated by the site decision documents. Protectiveness Statement The implemented remedy for the Lang Property Superfund Site protects human health and the environment. There are no current exposure pathways that could result in unacceptable risks and none are expected. Lang Property Superfund Site Pemberton Township, New Jersey Second Five-Year Review I. Introduction This second five-year review for the Lang Property site, located in Pemberton Township, Burlington County, New Jersey, was conducted by the United States Environmental Protection Agency's (EPA's) Remedial Project Manager (RPM), Lawrence Granite. The five-year review was conducted pursuant to policy and in accordance with the Comprehensive Five-Year Review Guidance, OSWER Directive 9355.7-03B-P (June 2001). The purpose of five-year reviews is to ensure that implemented remedies are protective of public health and the environment and that they fiinction as designed. This document will become part of the site file. The remedial action for the site was divided into two separate phases. The first phase involved the excavation and removal of contaminated materials from the site. The second phase involves addressing the ground water contamination present at the site. It is the policy of EPA to conduct five-year reviews at sites where the remediation will take longer than five years. Construction of the ground water remediation system began in 1994 and the system continues to operate. The trigger for this second five-year review is the first five-year review which was signed by EPA on September 25, 2000. This five-year review found that the selected remedy remains protective of public health and the environment. II. Site Chronology See Table 1 for site chronology. III. Background Physical Characteristics The Lang Property site is located in Pemberton Township, Burlington County, New Jersey. The site is located on a 40-acre parcel of land in a rural area just south of New Jersey Route 70 off of City ^Line Road (see Figure 1-1). The site is in close proximity to the Brendan T. Byrne State Forest (formerly known as the Lebanon State Forest) and is located within New Jersey's Pinelands National Reserve, which is recognized as one of the nafion's valuable environmental resources. Specifically, the site is located within the Central Pine Barrens Water Quality Critical Area and the Pinelands Preservation Area District. The site is immediately underlain by unconsolidated coastal plain sediments that include thin surficial sands with interbedded silts resting unconformably on the Cohansey Formation. The Cohansey is a major water-bearing unit that, in addition to providing ground water to wells, also functions as a recharge source to other coastal plain aquifers. The Cohansey was identified to a depth of 70 feet at the site and is underlain by the Kirkwood Formation. Ground water generally flows to the northwest. Land and Resource Use The disposal of hazardous wastes occurred over a two-acre area within the 40-acre parcel. There are no residences on the property. Abandoned vehicles, a large number of tires, and other debris were scattered throughout the site prior to remediation. The site is flat and currently contains fields of blueberry plants, most of which are no longer cultivated, and forested areas. Access to the two-acre area is limited by a fence. A ground water treatment facility is present on the site, as well as extraction, injection, and monitoring wells. The site is located within New Jersey's Pinelands National Reserve and is considered ecologically valuable. / History of Contamination In June 1975, between 1,200 and 1,500 drums of unidentified chemical waste were discovered in a clearing at the end of the unpaved road leading to the Lang Property site. Prompted by legal action by the NJDEP in 1976, the site owners hired a contractor to remove the drums and contaminated soils from the site. Before the drums were removed, however, their contents were apparently spilled onto the ground or disposed of in what have been historically described as "on-site lagoons," resulting in the contamination of soil and ground water. Initial Response From 1977 through most of 1979, repeated sampling by the Burlington County Health Department and the NJDEP determined that ground water contaminafion was present. In 1980 and 1981, additional site inspections were conducted by State and local authorities. Basis for Taking Action Following the listing of the site on the NPL in 1982, EPA conducted an RI/FS to better delineate the nature, extent and impact of contamination at the site, and to develop and evaluate remedial alternatives. The RI indicated that surficial soils (0 to 2 feet deep) and subsurface soils in the two- acre area where disposal took place were contaminated with volatile organic compounds (VOCs) and, to a lesser degree, metals. The most severe contamination was in the surficial soils. Shallow ground water beneath the disposal area was also Contaminated with VOCs and metals. Contaminants had migrated approximately 300 to 500 feet from the disposal area, principally to the northwest, and extended to a depth of 30 feet.